Hurricane Irma's eye passed west of the local forecast area, with the region on the storm's turbulent east side. Widespread tropical storm force winds with gusts to hurricane force were felt across much of the area, with the strongest winds surging up the Florida east coast during the pre-dawn hours of Sept. 11th. Extensive tree and power line damage occurred across the local area from the winds. One of the greatest local impacts exacerbated by Irma's rainfall and storm surge was river flooding. Prior to Irma's arrival, a local nor'eastern developed 3 days prior, with strong onshore flow pumping water into the St. Johns River basin. Elevated water levels of 1-2 ft above normal tidal departure were already ongoing for several tidal cycles before Irma's surge and rainfall. The nor'easter also brought localized heavy rainfall bands, with some areas near the coast realizing 4-6 inches in 24 hrs the days prior to Irma. In addition, precursor conditions to the nor'easter included an above average rainfall across the region during the summer months.  Major, historic river flooding was forecast along Black Creek and the Sante Fe a week prior to Irma. Realized river values along the St. Johns surpassed prior record levels set by Hurricane Dora in 1964, during low tide the morning of Sept. 11th. The St. Johns River basin continued to rise with the combination of trapped tides due to the nor'easter, astronomically high tides heading into the spring tide season, storm surge of up to 5 ft in some areas, fresh water rainfall of 7-11 inches, and strong southerly winds pushing the water across the basin on the east side of Irma. Historic river flooding occurred across much of NE Florida Sept 11th through the following week as water levels were slow to funnel out of the St. Johns basin. Coastal infrastructure that was already weakened about 1 year ago due to Hurricane Matthew suffered the most damage from Irma's storm surge.

Tropical Storm in UNION, FLORIDA
From 10-SEP-17 23:00:00 to 11-SEP-17 11:00:00 (EST-5)
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources.
Santa Fe River at Worthington Springs set a record flood stage at 71.17 feet on Sept 12th at 2200 EDT. Major flooding occurred at this level. At 8:15 am on 9/11, the public reported power lines were blown down on SW 8th Street in Lake Butler.

Tornado in ST. JOHNS, FLORIDA
From 10-SEP-17 18:50:00 to 10-SEP-17 18:56:00 (EST-5)
Location: VILANO BEACH
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado may have initiated as a water spout that moved onshore at Vilano Beach. Minimal damage was reported in Vilano Beach with greater tree damage discovered west of Vilano Beach where a few trees were snapped and uprooted. Roof damage was reported on 5th Avenue near Vilano Beach. Multiple trees were damage and there was minor roof damage observed along Jackson and North Blvds. The tornado then crossed Highway 1 and caused additional tree and roof damage from 4th Street toward Porter Road before dissipating in the 12 Mile Swamp Conservation Area. Radar indicated a tornado debris signature. This tornado had peak winds of 85-100 mph.

Tornado in ST. JOHNS, FLORIDA
From 10-SEP-17 12:40:00 to 10-SEP-17 12:45:00 (EST-5)
Location: VILANO BEACH
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado passed the northern side of Castillo de San Marcos and uprooted 2 trees before strengthening to EF1 and moving toward Huguenot Cemetery. Multiple trees were uprooted and snapped in the cemetery. The tornado continued moving west in the vicinity of Orange Street before dissipating just before reaching Highway 1. This tornado likely began as a water spout offshore.

Flash Flood in DUVAL, FLORIDA
From 10-SEP-17 23:53:00 to 10-SEP-17 23:53:00 (EST-5)
Location: MARIETTA
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A social media post showed standing water in a home off of Ellis Road near the Murray Hill area of Jacksonville.

Flash Flood in DUVAL, FLORIDA
From 11-SEP-17 09:50:00 to 11-SEP-17 09:50:00 (EST-5)
Location: BOWDEN
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Historic river and fresh water flooding was reported in San Marco. Pumps under water. Water in homes. Water rescues from swift water rescue teams occurred.

Flash Flood in DUVAL, FLORIDA
From 11-SEP-17 04:00:00 to 11-SEP-17 04:00:00 (EST-5)
Location: (NZC)NAS CECIL FLD
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Yellow Water Creek was overflowing and cover Normandy Blvd. The road was closed.

Flash Flood in COLUMBIA, FLORIDA
From 11-SEP-17 06:30:00 to 11-SEP-17 07:35:00 (EST-5)
Location: LAKE CITY
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flash flooding images were relayed via social media in Lake City city by the public around 7:30 am. At 8:35 am, the 911 County Dispatch in Baker county relayed to NWS Jacksonville that they had received multiple reports of flash flooding in Macclenny and across other more rural areas of the county.

Flash Flood in ST. JOHNS, FLORIDA
From 11-SEP-17 13:58:00 to 11-SEP-17 13:58:00 (EST-5)
Location: SWITZERLAND
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple swift water rescues were conducted by law enforcement due to river flooding.

Tropical Storm in ALACHUA, FLORIDA
From 10-SEP-17 21:15:00 to 11-SEP-17 11:00:00 (EST-5)
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources.
Countywide wind damage included trees down across roads and on homes. Residential homes flooded in some areas due to poor drainage. Trees were blown down across the University of Florida campus and within the Gainesville city limits. At 1015 pm on 9/10, a 10 inch diameter spruce tree was blown down about 5 miles west of Gainesville. The strongest winds measured at the Gainesville Regional Airport occurred on Sept. 11th at 1:27 am of 40 mph with a peak gust of 61 mph on the 11th at 1:17 am.  Storm total rainfall from 8 am on Sept 10 through 8 am Sept 12 included 12.40 inches at the Gainesville Regional Airport, 12.22 inches 2.4 miles NW of Gainesville, 11.15 inches 7.5 miles WSW of Gainesville, 10.70 inches 2.1 miles NNE of Micanopy, 8.23 inches 3.2 miles SW of High Springs, and 5.7 inches 1 mile WNW of Alachua.
The Santa Fe River reached major flood stage due to rainfall across the basin. It set a record flood stage at 48.46 feet on Sept 14th at 1800 EDT. Major flooding occurred at this level and US Highway 441 was briefly shut down near the crest. The U.S. Highway 441 Bridge and U.S. Highway 27 Bridge over the Santa Fe Fiver was closed on 9/13/2017 due to rising flood water near High Springs. The Santa Fe River at Poe Springs Pool set a record flood stage at 40.59 feet on Sept 15th at 0400 EDT. Major flooding occurred at this level. The Santa Fe River at River Rise near High Springs set a record flood stage of 50.48 feet on Sept 14th at 1315 EDT which was major flooding.

Flash Flood in DUVAL, FLORIDA
From 11-SEP-17 03:35:00 to 11-SEP-17 03:35:00 (EST-5)
Location: SIMPSON YARD
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Water was covering the Interstate 10 ramps at Cassat Avenue.

Flash Flood in NASSAU, FLORIDA
From 11-SEP-17 06:00:00 to 11-SEP-17 06:00:00 (EST-5)
Location: HILLIARD
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Water was covering streets and approaching homes. Picture relayed via social media.

Flash Flood in FLAGLER, FLORIDA
From 11-SEP-17 02:13:00 to 11-SEP-17 02:13:00 (EST-5)
Location: PALM COAST TOWN CENTER
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Waist deep water was reported along Emerson Drive in Palm Coast.

Tornado in NASSAU, FLORIDA
From 11-SEP-17 01:25:00 to 11-SEP-17 01:35:00 (EST-5)
Location: FERNANDINA BEACH
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This weak tornado touched down on the northern end of Amelia Island and tracked west across open marsh areas. Damage was limited to trees and shrubs and damage was not reported. The path width was estimated at 100 yards as the circulation tracked generally over open marsh land then dissipated over rural marsh land. There was a clear tornado debris signature on radar.

Flash Flood in PUTNAM, FLORIDA
From 10-SEP-17 22:49:00 to 10-SEP-17 22:49:00 (EST-5)
Location: PALATKA KAY ARKIN AR
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A nursing home was being flooded. Patients had to be evacuated to a nearby hospital.

Flash Flood in ST. JOHNS, FLORIDA
From 11-SEP-17 06:15:00 to 11-SEP-17 07:00:00 (EST-5)
Location: SAMPSON CHURCH
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

At 715 am, the broadcast media reported that the east bound lanes of State Road 210 were closed at the Interstate 95 interchange due to flooded roads. At 7:52 am, the public reported that multiple cars were stalled in flood waters on Lane Avenue, just north of Interstate 10 in Jacksonville. At 8 am, an NWS employee reported that water was flowing over Lem Turner.

Tropical Storm in CLAY, FLORIDA
From 10-SEP-17 12:00:00 to 11-SEP-17 11:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources.
Clay County experienced widespread wind damage including trees down, power lines down, and structural damage due to tropical storm force winds. Rapid river rises and extremely heavy rainfall caused historic river flooding along the St. Johns River and Black Creek, as well as tributaries of these rivers. On Sept. 10th at 6:30 pm, a private weather station 18 ft above ground level in Keystone Heights measured a wind gust of 52 mph. On Sept. 11th at 3:04 am, 3 ft of storm surge above MHHW was reported at the Interstate 295 Bridge and the St. Johns River. Numerous river front homes lost property and had extensive dock and pier damage, including many structures and boats washed away from the surge. River waters rose to levels exceeding prior major stage records. Several helicopter rescues occurred along black creek.
Black Creek at Middleburg (Blanding Blvd and State Road 21) sets record flood stage at 30.52 feet on 09/12 at 0130 EDT. Major flooding occurred at this level. The north fork Black Creek near Middleburg set an estimated record flood stage between 28 and 29 feet on Sept 12th. Major flooding occurred at this level. The south fork Black creek near Penney Farms set an estimated record flood stage between 28 and 29 feet on Sept 12th. Major flooding occurred at this level.
Storm total rainfall included 6.78 inches 3.5 miles ENE of Keystone Heights, 7.46 inches in Penny Farms, 8.55 inches 9 miles of Florahome and 10 mile NE of Penny Farms, 10.48 inches 2.6 miles WNW of Green Cove Springs, 11.03 inches 1.8 WSW of Orange Park, and 11.32 inches 8.8 inches E of  Middleburg.

Tropical Storm in PUTNAM, FLORIDA
From 11-SEP-17 00:55:00 to 11-SEP-17 11:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources.
Storm total rainfall included 10.96 inches measured 3.5 miles NNW of East Palatka and 10.05 inches 4 miles NE of Satsuma. Peak winds included a gust of 66 mph about 3 miles SE of Welaka on Sept. 11th at 12:21 am and 61 mph on Sept. 10th at 8:55 pm at the Palatka Airport. At 11:49 pm on 9/10, a nursing home in Palatka was flooded and evacuations were ordered due to flash flooding.  Dunns Creek at Satsuma crested at 4.26 feet on Sept 11th at 1915 EDT. Major flooding occurred at this level. Orange Creek at Orange Springs crested at 28.96 feet on Sept 11th at 1115 EDT. Major flooding occurred at this level. The Ocklawaha River at Rodman Dam set a record flood stage at 9.70 feet on Sept 13th at 1900 EDT.  Storm tide peaked at 3.6 ft on Sept. 11th at 7:15 pm (datum MHHW).

Tropical Storm in FLAGLER, FLORIDA
From 10-SEP-17 08:46:00 to 11-SEP-17 12:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources.
Flagler County experienced surge, wind and flooding rainfall damage from Irma. There was also one confirmed EF0 tornado touchdown just south of Marineland. Tropical storm force wind gusts began Sunday morning around 9:46 am at Flagler Beach as measured by a volunteer ARES observer with a wind gust of 39 mph. Through noon, gusts of 40-45 mph were measured. At 12:48 pm, surf over-wash was reported at the Malacompra beach approach near the Hammocks. At 1:16 pm, water was reported at the top of the sea wall in Palm Coast. By 2:31 pm, water was over the sea wall and onto grass in Palm Coast. Also at 2:31 pm, roof shingles and siding were blown off of homes along North 20th Street and A1A. Around 3 pm, power lines were blown down at the Beverly Beach Camptown RV resort. At 4:31 pm, water was about 15 inches over the sea wall in Palm Coast. At 4:40 pm, water was over the road along Wynfield Drive in Palm Coast. At 5 pm, water was over the sea wall and the ramp at Bings Landing and Hershal King Parks on the Intracoastal Waterway, and water was over the boat ramp at Dead Lake fish camp. At 5:35 pm, power outages were reported at Station 71. At 6:30 pm, at 50 mph wind gust was measured north of Flagler Beach. By 8:28 pm, sustained tropical storm force winds of 40 mph were measured at north Flagler Beach. At 8:29 pm, trees were blown down onto powerlines at Burgress Place. At 8:30 pm, a measured wind gust of 50 mph was recorded in Flagler Beach. At 8:45 pm, Tangerine to Lancewood and Water Oak to Hibiscus were underwater and impassable. At 9:06 pm, a wind gust of 60 mph was measured in north Flagler Beach, and by 9:17 pm, sustained winds of 45-50 mph were measured in Flagler Beach. By 9:32 pm, there were multiple reports of 40-45 mph wind gusts inland and 45-50 mph gusts at the beaches. At 9:40 pm, numerous secondary roads in Daytona North were impassable due to flooding. The emergency operations center in Bunnell measured a wind gust of 59 mph at 10:45 pm. At 10:55 pm, the ASOS at the Flagler County airport measured a wind gust of 59 mph, then at 11:58 pm, a sustained wind of 48 mph was measured in Flagler Beach. September 11, at 12:24 am, a measured wind gust of 75 mph was measured in Flagler beach with sustained winds near 50 mph through 12:47 am. At 12:26 am, a measured gust of 72 mph was measured at the Emergency Operations center in Bunnell. At 1:01 am, the county airport measured a wind gust of 63 mph. At 2 am, about 2 feet of water was over the sea wall in Palm Coast. At 2:38 am, a sustained wind of 40 mph with gusts to 54 mph was measured at Flagler Beach, then at 3 am A sustained wind of 54 mph with a gust of 78 mph was measured in Flagler Beach. At 3:10 am, a measured gust of 83 mph was recorded at Flagler Beach. At 3:13 am, waist deep water was reported on Emerson Drive in Palm Coast. At 4 am, a report of storm surge impacted Marineland Acres just south of Washington Oaks State Park. At 4:03 am, a sustained wind of 47 mph was measured with a gust to 67 mph in Flagler Beach. At 5:30 am, a porch was blown off along Carol Court. At 5:45 am, water was 4 inches over the sea wall in Palm Coast. At 6:49 am, there were multiple reports of storm surge flooding along the Intracoastal Waterway in Flagler Beach. At 7:22 am, a wind gust of 53 mph was measured in Palm Coast. At 7:44 am, along State Road 100 and South Chapel, water was reported over the road as well as trees blown down. At 8 am, homes were damaged along Woodlash lane. At 8:22 am, Barrington become impassable. At 8:27 am, a power line was reported blown down on Barkley in Palm Coast, then at 8:31 am trees and fences were blown down along Belle Terre and Bellaire Blvds. At 10:19 am, multiple homes were reported under water in Flagler Beach and along the Intracoastal Waterway. The last measured wind over 40 mph was measured at 1:15 pm. Rainfall totals included 12.24 inches at the Bunnell Emergency Operations Center, 14.0 inches in Central Palm Coast at the COPC Water Plant 1, 10.03 inches in Southern Palm Coast at the COPC Water Plant 2, 10.10 inches in West Palm Coast at the COPC Water Plant 3, 8.82 inches in East Palm Coast, and 5.6 inches in West Palm Coast.
Inland river flooding included the Matanzas River at Bings Landing that crested at 4.85 feet on Sept 11th at 0424 EDT. Major flooding occurred at this level. Haw Creek above Russell Landing set a record flood stage at 7.87 feet on Sept 11th at 1430 EDT. Major flooding occurs at this level.

Tropical Storm in GILCHRIST, FLORIDA
From 10-SEP-17 11:00:00 to 11-SEP-17 11:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources.
The Santa Fe River near Hildreth crested at 21.22 ft on Sept. 17th at 0715 EDT. Minor flooding occurred at this level. The Santa Fe River near Fort White crested at 34.46 ft on Sept. 15th at 1545 EDT. Major flooding occurred at this level.
Storm total rainfall included 15.11 inches about 4 miles west of Bellair, 7.6 inches about 8 miles ENE of Trenton, and 6.53 inches 4 miles NW of Trenton.

Tropical Storm in COLUMBIA, FLORIDA
From 10-SEP-17 12:00:00 to 11-SEP-17 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources.
The Ichetucknee River below Ichetucknee Springs State Park crested at 24.54 feet on Sept 16th at 1900 EDT.  Major flooding occurred at this level. The Santa Fe River at Oleno State Park set a record flood stage at 57.07 feet on Sept 14th at 0715 EDT. Major flooding occurred at this level. The Suwannee river near Benton crested at 94.47
feet on Sept 21st. Minor flooding occurred at this level. The Santa Fe River at Three Rivers Estates crested at 24.55 feet on Sept 16th at 2000 EDT. Major flooding occurred at this level. The Suwannee River at White Springs crested at 76.49 feet on Sept 13th at 0045 EDT. Minor flooding occurred at this level.
Storm total rainfall included 8.44 inches about 8 miles SSW of Lake City.

Tornado in ST. JOHNS, FLORIDA
From 11-SEP-17 00:15:00 to 11-SEP-17 00:20:00 (EST-5)
Location: SUMMER HAVEN
Tornado F-scale: EF2
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Significant structural damage occurred at Summer House vacation rentals in Crescent Beach. There were definitive signs of circulation in the debris field. Tree damage extended inland to A1A. The tornado appeared to dissipate over the Intracoastal Waterway. Peak winds were estimated at 110-130 mph.

Tropical Storm in COASTAL NASSAU, FLORIDA
From 10-SEP-17 07:00:00 to 11-SEP-17 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources.
Tropical storm force winds with gusts to hurricane force, river flooding, storm surge and tornadoes impacted Nassau County from Hurricane Irma. On 9/11, a private weather station on Dunes Row at the south end of Amelia Island at a 60 ft elevation measured a wind gust of 106 mph, between 1 am and 2:30 am. At 3 am, several trees were blown down onto homes near Fernandina beach. At 2 am, the Fernandina Beach NOS tide gauge measured water level rises of 3.5 to 4 ft above MHHW datum.
The tidal gauge on the Atlantic coast at Fernandina Beach crested at 6.34 feet on Sept 11th at 0148 EDT. Moderate flooding occurred at this level. The St. Marys River at Interstate 95 crested at 3.57 feet on Sept. 11th at 1415 EDT. Minor flooding occurred at this level.
Storm total rainfall included 9.86 inches about half a mile north of Fernandina Beach, 9.93 inches 6.3 miles S of Fernandina Beach, and 12.70 inches in Fernandina Beach.

Flash Flood in ALACHUA, FLORIDA
From 11-SEP-17 07:00:00 to 11-SEP-17 11:30:00 (EST-5)
Location: ARREDONDA
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flooding rainfall started to impact Gainesville around 8 am when multiple reports of flooded streets were reported to local law enforcement. At 9 am, law enforcement reported NW 34th Street about 1 mile NW of the University of Florida was closed from NW 8th Avenue to Radio Road due to flooding. At 912 am, West University Blvd was closed from 20th Street to 38th Street due to flooding from Hogtown Creek, about 1 mile WNW of the University of Florida. At 913 am, one law enforcement patrol car was lost due to flooding at Hogtown Creek. Another vehicle could not be reached. At 1020 am, Lake Alice was flooding over Museum Road and the road had to be closed. At 1037 am, a road was washed out about 5 miles SSE of Brooker, on 21st Street off of 156th Avenue. At 1202 pm, SE Wacahoota Road collapsed, about 2 miles NW of Micanopy. At 1208 pm, about 4 miles SW of Waldo, water was over the road at Waldo Road and State Road 24. At 1230 pm, Turkey Creek was overflowed and over the bridge on NW Creek Drive, about 4 miles ESE of Alachua.

Tropical Storm in COASTAL DUVAL, FLORIDA
From 10-SEP-17 05:21:00 to 11-SEP-17 10:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources.
Tropical storm force wind gusts started to impact Duval County during the morning 9/10, with a gust of 50 mph around 6:21 am at Huguenot Park. At 7 am, a Weatherflow Mesonet station at Buck Island on the St. Johns River measured a sustained winds of 37 mph and a gust to 50 mph. At 9:20 pm, a Mesonet station about 2 miles WNW of Fort Caroline measured sustained winds of 35 mph with a gust to 50 mph. At 10:26 pm, the ASOS at the Jacksonville International Airport near the NWS office measured a 58 mph wind gust. On 9/11 at 1:45 am,
The NOS tide gauge at Mayport measured water levels of 2.9 ft to 3 ft above MHHW datum. At 3:23 am, the Mayport ASOS measured a sustained wind of 51 mph (44 kt) and a gust of 74 mph (64 kt). At 3:38 am, the Mayport ASOS measured a sustained wind of 68 mph (59 kt) and a gust of 87 mph (76 kt). This was the highest official recorded wind speed of Irma across the NWS Jacksonville county warning area. At 3:41 am, the ASOS at the Jacksonville International Airport measured sustained winds of 59 mph (51 kt) and a gust of 86 mph (75 kt) within the same potent rain-band that stretched eastward across Mayport. This was the most intense rainfall and wind rain band that impact the area with Irma. At 3:41 am, the Weatherflow sensor at Huguenot Park measured sustained winds of 66 mph and gusts to 85 mph, again under the same rain band. At 3:42 am, multiple trees were blown down outside of the NWS Jacksonville office at the Jacksonville International Airport following the 86 mph wind gust. One tree fell on the NWS office sign and damaged it. At 4:30 am, the roof was blown off of a home in the Sans Souci neighborhood. At 5:45 am, the St. Johns River at Main Street in downtown Jacksonville reported a water level of 4.39 ft NAVD88, which broke the record from Hurricane Dora of 4.12 ft NAVD88 set in 1964. At 8:26 am, the ASOS at Craig Airfield measured a wind gust of 70 mph. At 10:09 am, the ASOS at Naval Air Station (NAS) Jacksonville in Orange Park along the St. Johns River measured a wind gust of 67 mph. At 10:14 am, a peak wind gust of 69 mph was measured at NAS Jacksonville. At 3:59 pm, an evacuee in San Marco along the St. Johns River near downtown Jacksonville reported water rose into his home up to his neck (about 5 ft inundation in his home). Historic record setting flooding of the St. Johns River and tributaries due to combination of elevated water levels from the Nor'easter event, high astronomical tides, river surge and storm rainfall from Irma. The river gauge at the Main Street bridge in downtown Jacksonville surpassed hurricane Dora 1964 record flooding the morning of 9/11 at low tide with a value of over 5 ft datum NAVD88 (Dora record was 4.12 ft NAVDd88 datum). The river at this location crested around 12:30 pm at 5.57 ft NAVD88, which is an all-time record stage. Major flooding impacted the St. Johns River Basin, and about 350 water rescues were conducted in Duval County, especially in the Riverside, San Marco and downtown Jacksonville areas.
The St. Johns River at the Buckman Bridge set a record flood stage At 5.63 feet on Sept 11th at 0718 EDT. Major flooding occurred at this level. The Broward River below Biscayne Blvd crested at 4.08 feet on Sept 11th at 0045 EDT. Moderate flooding occurred at this level. Clapboard Creek near Sheffield Road set a record flood stage at 5.31 feet on Sept 11th at 0430 EDT. Major flooding occurred at this level. Dunn Creek at Dunn Creek Road set a record flood stage at 6.38 feet on Sept 11th at 0930 EDT. Major flooding occurred at this level. The St Johns River at the Dames Point Bridge set a record flood stage at 5.05 feet on Sept 11th at 1324 EDT. Major flooding occurred at this level. The Cedar River at San Juan Avenue set a record flood stage at 6.35 feet on Sept 11th at 1230 EDT.   Major flooding occurred at this level. Julington creek at Old St Augustine road set a record flood stage at 6.20 feet on Sept 11th at 1030 EDT. Major flooding occurred at this level. The St Johns River at the Main Street Bridge set a record flood stage at 5.57 feet on Sept 11th at 1224 EDT. Major flooding occurred at this level. The St Johns River at Mayport crested at 5.58 feet on Sept 11th at 0254 EDT. Major flooding occurred at this level. The Nassau River near Tisonia sets a record flood stage at 8.18 feet on Sept 11th at 0330 EDT. Major flooding occurred at this level. The Ortega River at Argyle Forest Blvd sets a record flood stage at 12.99 feet on Sept 11th at 1215 EDT. Major flooding occurred at this level. The St Johns River at Buffalo Bluff crested at 3.31 feet on Sept 12th at 2315 EDT. Moderate flooding occurred at this level. Pottsburg creek at Beach Blvd set a record flood stage at 5.84 feet on Sept 11th at 1300 EDT. Major flooding occurred at this level. Pottsburg Creek at Bowden Road set a record flood stage at 10.04 feet on Sept 11th at 0800 EDT. Major flooding occurred at this level. The Trout River at Lem Turner Road crested at 4.16 feet on Sept 11th at 0200 EDT. Moderate flooding occurred at this level.
Storm total rainfall included 11.04 inches 10 mile SW of Jacksonville, 11 inches 12 miles SSE of Jacksonville, 9.2 inches at the Jacksonville International Airport, 7.96 inches at Mayport Naval Air Station and 7.08 inches at Jacksonville Naval Air Station.

Tropical Storm in BAKER, FLORIDA
From 10-SEP-17 12:00:00 to 11-SEP-17 11:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources.
Multiple trees were blown down across the county. Large trees 18-20 inches in diameter were blown down about 3 miles WNW of Macclenny.
The St. Marys River near Macclenny crested at 22.32 feet on Sept 12th at 1845 EDT. Major flooding occurred at this level. The St. Marys River at Moniac crested at 17.51 feet on Sept. 13th at 0415 EDT. Major flooding occurred at this level.
Storm total rainfall included 9.76 inches 3 miles N of Olustee and 7.79 inches 7 miles NNW of Taylor.

Flood in BRADFORD, FLORIDA
From 10-SEP-17 09:35:00 to 10-SEP-17 09:35:00 (EST-5)
Location: STARKE
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A report via social media showed Alligator Creek in Starke coming up to the bridge level at Laura Street. This was occurring at the same time that the creek gauge measuring major flooding status just downstream at U.S. Highway 301.

Flash Flood in DUVAL, FLORIDA
From 11-SEP-17 03:46:00 to 11-SEP-17 03:46:00 (EST-5)
Location: NEPTUNE BEACH
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Water was flooding 3rd Street near Pita Pit in Jacksonville Beach with additional flooding reports just west on 5th Street.

Tropical Storm in UNION, FLORIDA
From 10-SEP-17 12:00:00 to 11-SEP-17 11:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources.
On Sept. 11th at 8:15 am, the public reported power lines were blown down on SW 8th Street in Lake Butler.
The Santa Fe River at Worthington Springs set a record flood stage at 71.17 feet on Sept 12th at 2200 EDT. Major flooding occurred at this level.
Storm total rainfall included 9.62 inches 0.9 miles NE of Raiford.

Tropical Storm in INLAND DUVAL, FLORIDA
From 10-SEP-17 05:21:00 to 11-SEP-17 10:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources. Tropical storm force wind gusts started to impact Duval County during the morning 9/10, with a gust of 50 mph around 6:21 am at Huguenot Park. At 7 am, a Weatherflow Mesonet station at Buck Island on the St. Johns River measured a sustained winds of 37 mph and a gust to 50 mph. At 9:20 pm, a Mesonet station about 2 miles WNW of Fort Caroline measured sustained winds of 35 mph with a gust to 50 mph. At 10:26 pm, the ASOS at the Jacksonville International Airport near the NWS office measured a 58 mph wind gust. On 9/11 at 1:45 am, The NOS tide gauge at Mayport measured water levels of 2.9 ft to 3 ft above MHHW datum. At 3:23 am, the Mayport ASOS measured a sustained wind of 51 mph (44 kt) and a gust of 74 mph (64 kt). At 3:38 am, the Mayport ASOS measured a sustained wind of 68 mph (59 kt) and a gust of 87 mph (76 kt). This was the highest official recorded wind speed of Irma across the NWS Jacksonville county warning area. At 3:41 am, the ASOS at the Jacksonville International Airport measured sustained winds of 59 mph (51 kt) and a gust of 86 mph (75 kt) within the same potent rain-band that stretched eastward across Mayport. This was the most intense rainfall and wind rain band that impact the area with Irma. At 3:41 am, the Weatherflow sensor at Huguenot Park measured sustained winds of 66 mph and gusts to 85 mph, again under the same rain band. At 3:42 am, multiple trees were blown down outside of the NWS Jacksonville office at the Jacksonville International Airport following the 86 mph wind gust. One tree fell on the NWS office sign and damaged it. At 4:30 am, the roof was blown off of a home in the Sans Souci neighborhood. At 5:45 am, the St. Johns River at Main Street in downtown Jacksonville reported a water level of 4.39 ft NAVD88, which broke the record from Hurricane Dora of 4.12 ft NAVD88 set in 1964. At 8:26 am, the ASOS at Craig Airfield measured a wind gust of 70 mph. At 10:09 am, the ASOS at Naval Air Station (NAS) Jacksonville in Orange Park along the St. Johns River measured a wind gust of 67 mph. At 10:14 am, a peak wind gust of 69 mph was measured at NAS Jacksonville. At 3:59 pm, an evacuee in San Marco along the St. Johns River near downtown Jacksonville reported water rose into his home up to his neck (about 5 ft inundation in his home). Historic record setting flooding of the St. Johns River and tributaries due to combination of elevated water levels from the Nor'easter event, high astronomical tides, river surge and storm rainfall from Irma. The river gauge at the Main Street bridge in downtown Jacksonville surpassed hurricane Dora 1964 record flooding the morning of 9/11 at low tide with a value of over 5 ft datum NAVD88 (Dora record was 4.12 ft NAVDd88 datum). The river at this location crested around 12:30 pm at 5.57 ft NAVD88, which is an all-time record stage. Major flooding impacted the St. Johns River Basin, and about 350 water rescues were conducted in Duval County, especially in the Riverside, San Marco and downtown Jacksonville areas. The St. Johns River at the Buckman Bridge set a record flood stage At 5.63 feet on Sept 11th at 0718 EDT. Major flooding occurred at this level. The Broward River below Biscayne Blvd crested at 4.08 feet on Sept 11th at 0045 EDT. Moderate flooding occurred at this level. Clapboard Creek near Sheffield Road set a record flood stage at 5.31 feet on Sept 11th at 0430 EDT. Major flooding occurred at this level. Dunn Creek at Dunn Creek Road set a record flood stage at 6.38 feet on Sept 11th at 0930 EDT. Major flooding occurred at this level. The St Johns River at the Dames Point Bridge set a record flood stage at 5.05 feet on Sept 11th at 1324 EDT. Major flooding occurred at this level. The Cedar River at San Juan Avenue set a record flood stage at 6.35 feet on Sept 11th at 1230 EDT. Major flooding occurred at this level. Julington creek at Old St Augustine road set a record flood stage at 6.20 feet on Sept 11th at 1030 EDT. Major flooding occurred at this level. The St Johns River at the Main Street Bridge set a record flood stage at 5.57 feet on Sept 11th at 1224 EDT. Major flooding occurred at this level. The St Johns River at Mayport crested at 5.58 feet on Sept 11th at 0254 EDT. Major flooding occurred at this level. The Nassau River near Tisonia sets a record flood stage at 8.18 feet on Sept 11th at 0330 EDT. Major flooding occurred at this level. The Ortega River at Argyle Forest Blvd sets a record flood stage at 12.99 feet on Sept 11th at 1215 EDT. Major flooding occurred at this level. The St Johns River at Buffalo Bluff crested at 3.31 feet on Sept 12th at 2315 EDT. Moderate flooding occurred at this level. Pottsburg creek at Beach Blvd set a record flood stage at 5.84 feet on Sept 11th at 1300 EDT. Major flooding occurred at this level. Pottsburg Creek at Bowden Road set a record flood stage at 10.04 feet on Sept 11th at 0800 EDT. Major flooding occurred at this level. The Trout River at Lem Turner Road crested at 4.16 feet on Sept 11th at 0200 EDT. Moderate flooding occurred at this level.	Storm total rainfall included 11.04 inches 10 mile SW of Jacksonville, 11 inches 12 miles SSE of Jacksonville, 9.2 inches at the Jacksonville International Airport, 7.96 inches at Mayport Naval Air Station and 7.08 inches at Jacksonville Naval Air Station.

Tornado in NASSAU, FLORIDA
From 11-SEP-17 01:25:00 to 11-SEP-17 01:30:00 (EST-5)
Location: FERNANDINA BEACH ARP
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Another tornado developed south of the northern Amelia Island Island tornado at the same time. This tornado touched down just south of Fernandina Beach and tracked westward with damage limited to trees and shrubs. The tornado dissipated over marsh areas. A tornado debris signature was noted on radar. Damage was not reported.

Tropical Storm in ST. JOHNS, FLORIDA
From 10-SEP-17 07:23:00 to 11-SEP-17 10:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources.
St. Johns County was impacted by strong tropical storm winds, storm surge as well as multiple tornadoes due to Hurricane Irma. On 9/10 at 8:23 am, a mesonet station in Vilano Beach measured a sustained wind of 47 mph with gusts up to 54 mph. At 9:39 am, the St. Augustine airport AWOS station measured winds of 39 mph with gusts up to 53 mph. At 10:05 am, the Vilano beach mesonet station measured a winds of 56 mph with gusts of 62 mph. At 7:40 pm, a mesonet station 2 miles NW of St. Augustine measured a sustained wind of 30 mph with gusts to 50 mph. At 8:46 pm, the St. Augustine airport AWOS measured a wind gust of 58 mph. At 9 pm, the C-man Station at the St. Augustine Pier measured a sustained wind of 53 mph with a gust to 64 mph. On 9/11 at 12:46 am, the St. Augustine AWOS at the airport measured a sustained wind of 48 mph (42 kt) and a gust of 71 mph (62 kt). At 1:30 am, a roof was blown off of a barn at the 2500 block of Deerwood Lane. At 3:30 am, multiple trees were blown down at the Trinity Rescue Mission Freedom Farm Facility. A roof was blown off of one of the buildings and a fence was blown down.
Durbin Creek at Race Track Road crested at 6.69 feet on Sept 11th at 1600 EDT. Major flooding occurred at this level. The St Johns River at Racy Point crested at 4.60 feet on Sept 11th at 1648 EDT. Major flooding occurred at this level. Deep Creek at Spuds set a record flood stage at 6.57 feet on Sept 11th at 2200 EDT. Major flooding occurred at this level. The Tolomato River above the St Augustine airport set a record flood stage at 5.58 feet on Sept 11th at 0206 EDT. Major flooding occurred at this level.
Storm total rainfall included 10.22 inches in St. Augustine South.

Tropical Storm in BRADFORD, FLORIDA
From 10-SEP-17 09:35:00 to 11-SEP-17 11:00:00 (EST-5)
Property damage: 4.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources.
The county experienced widespread tree and power line damage due to tropical storm force winds.
The county EM team reported that about 300 homes where flooded in the cities of Starke, Sampson and Crosby Lake. Two apartment complexes were flooded. Three weeks after the storm, residents of Sampson and Crosby Lake were still taking boats to get to their homes. Initial road damage estimates were up to $4 million dollars.
Storm total rainfall included 11.74 inches measured 0.9 miles ESE of Starke. At 10:35 am on 9/10, Alligator Creek in Starke started rising up to the bridge level at Laura Street. This occurred in conjunction with major flood stage reported at the Alligator Creek gauge located just downstream at U.S. Highway 301.  Alligator Creek at Starke set a record flood stage at 147.98 feet on 09/11 at 1100 EDT. The Santa Fe River near Graham set a record flood stage at 118.98 feet on 09/11 at 0945 EDT. Hampton Lake near Hampton crested at 131.03 feet on Sept 13th at 1200 EDT. Moderate flooding occurred at this level. Lake Sampson near Starke set a record flood stage at 135.34 feet on Sept 15th at 2000 EDT. Major flooding occurred at this level. New River near Lake Butler set a record flood stage at 98.55 feet on Sept 12th at 0815 EDT. Major flooding occurred at this level. Sampson River at Sampson City set a record flood stage at 135.09 feet on Sept 15th at 1900 EDT. Major flooding occurred at this level.

Tornado in FLAGLER, FLORIDA
From 10-SEP-17 19:13:00 to 10-SEP-17 19:23:00 (EST-5)
Location: MARINELAND
Tornado F-scale: EF0
Crop damage: 0.00K
Reported by: Emergency Manager

This tornado touchdown in northern Flagler county just south of Marineland. Damage was limited to trees. Structural damage was not reported. A tornado debris signature was detected along the path. The tornado remained over the Pellicer Creek Conservation Area before dissipating just west of Interstate 95.

Tropical Storm in MARION, FLORIDA
From 10-SEP-17 22:00:00 to 11-SEP-17 11:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This narrative is from the NWS Jacksonville Post Storm Report for Hurricane Irma which is a compiled list of reports from the storm survey, Emergency Management, private and public weather observation networks and broadcast media sources.
Marion County experienced widespread tree and power line damage from tropical storm force winds. A location about 5 miles ENE of Ocala measured a 24-hr rainfall total on 9/10 of 7.30 inches, which was in advance of Irma's heavy rainfall band. At 1 am on 9/11, trees and power lines were blown down about 10 miles SW of Santos. At 1 am, trees were blown down and blocked the road along SE 50th terrace and a tree was down across 14th Street in Ocala. Trees and power lines were blown down over the road at the intersection of SE 50th terrace and SE 21st Street in Ocala. Additional reports of trees and power lines blown down continued through the pre-dawn hours on 9/11 around Ocala with a report of a tree blown down onto a roof on SW 41st Avenue in Ocala. At 2:20 am, power lines were blown down into a yard on 38th Street in Ocala, and at 2:40 am, a 12-inch in diameter tree crushed a vehicle and tore a hole into a roof along SE 47th Place in Ocala. Around 1 am, a tree was blown down onto a power line in Belleview. At 8:35 pm on 9/11, the public reported storm total rainfall of 5.42 inches about 5 miles ENE of Ocala.
The Ocklawaha River near Conner set a record flood stage at 40.07 feet on 09/11 at 1000 EDT. The Ocklawaha River at Eureka set a record flood stage at 25.49 feet on 09/13 at 0515 EDT. The Ocklawaha River near Ocala set a record flood stage at 41.31 feet on Sept 11th at 0745 EDT.
Storm total rainfall included 11.51 inches about 9 miles S of Interlachen, 10.12 inches 4.6 miles N of Ocala, 9.96 inches 11.2 miles SW of Ocala, and 9.0 inches 4.9 miles NE of Ocklawaha.