Major Hurricane Ian moved north from far western Cuba into the western Straits of Florida. As Ian moved north over the Dry Tortugas and into the southeastern Gulf of Mexico from September 27th through the 28th, tropical storm force winds and damaging storm surge occurred across the Florida Keys. A secondary but lesser storm surge occurred along the Gulf of Mexico and Florida Bay side of the Lower and Middle Keys after Major Hurricane Ian moved inland the west coast of Florida, and well after tropical storm force winds had subsided.

Tropical Storm in MONROE/UPPER KEYS, FLORIDA
From 28-SEP-22 03:00:00 to 28-SEP-22 07:00:00 (EST-5)
Crop damage: 0.00K
Reported by: NWS Storm Survey

Tropical storm force winds occurred mainly in gusts across the upper Florida Keys from Islamorada through Ocean Reef.  Peak sustained winds were mainly in the 25 to 30 mph range, with peak gusts measured at 45 mph at Ocean Reef, and 40 mph at automated stations in Tavernier and Islamorada. Limited utility line damage occurred along with isolated downed tree limbs. Power outages were limited to small portions of a neighborhood or two at a time.

Tropical Storm in MONROE/MIDDLE KEYS, FLORIDA
From 27-SEP-22 20:00:00 to 28-SEP-22 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Tropical storm force winds occurred in the middle Florida Keys from Marathon through Long Key.  Sustained winds ranged from 30 to 45 mph with peak gusts measured at 60 mph at the Florida Keys Marathon International Airport, and 58 mph at the Marathon High School as well as an automated weather station on the oceanside of Crawl Key.  Scattered tree limbs were downed, with power outages limited to small portions of a few neighborhoods at a time.

Tropical Storm in MONROE/LOWER KEYS, FLORIDA
From 27-SEP-22 16:45:00 to 28-SEP-22 06:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Sustained tropical storm force winds occurred in the Lower Florida Keys from Key West through the Seven Mile Bridge, and were measured in the 45 to 60 mph range.  Peak gusts of 79 mph at the Key West International Airport, 68 mph at the Naval Air Station Key West Boca Chica Field, and 75 mph at an electric substation on Big Coppitt Key. Wind damage occurred in the form of scattered large tree limbs downed, with isolated uprooted or snapped trees. Scattered fences were downed in the city of Key West, with isolated building soffit and siding damage. A few commercial business signs were blown out throughout the Lower Florida Keys.  A few gas station canopies within Key West displayed fascia damage, and one gas station canopy on Stock Island exhibited foundation failure among its four posts.  Total power outages peaked near 10,000 customers in the Lower Florida Keys, representing approximately one-third of the Keys Energy service area.

Storm Surge/Tide in MONROE/LOWER KEYS, FLORIDA
From 27-SEP-22 19:00:00 to 28-SEP-22 03:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Storm surge occurred along the oceanside of the Lower Florida Keys, with a a peak storm tide from City of Key West damage assessments near 4.7 feet NAVD88 along the southwest oceanside and Truman Annex area. Values of 3.5 to 4.4 feet NAVD88 were observed along much of the oceanside of Key West and confirmed by a USGS gauge, and 3.0  NAVD88 on the southeast corner of Key West and oceanside Stock Island. A storm tide measurement of 2.8 feet was recorded by a USGS gauge on the oceanside of Little Torch Key. 93 residences in Key West were flooded with 38 classified as receiving major damage and 55 with minor damage. Numerous vehicles were flooded especially in the oceanside portions of Truman Annex, southern Bahama Village and scattered throughout the southwest and south central portions of Key West. Flagler Avenue and South Roosevelt Boulevard remained closed after the passage of Ian due to flooding and debris, with the latter buried under sand to a depth of 1 to 2 feet.  6 large concrete barriers along the oceanfront of South Roosevelt Boulevard were displaced by wave action up to 30 feet.  A second surge with storm tides peaking near 2.5 feet occurred the afternoon of the 28th as Hurricane Ian moved inland the west coast of Florida.  Impacts were limited to street flooding in Key West and along the northern portions of the larger Lower Florida Keys.

Storm Surge/Tide in MONROE/MIDDLE KEYS, FLORIDA
From 27-SEP-22 20:00:00 to 28-SEP-22 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Oceanside storm surge flooding occurred with storm tide levels ranging from 2.0 to 2.5 feet NAVD88.  Oceanfront street flooding along with yards and several outbuildings and sheds flooded generally less than one foot deep.  A second storm surge occurred during the afternoon of the 28th, resulting in widespread street flooding along Gulf of Mexico and Florida Bayfront neighborhoods.

Storm Surge/Tide in MONROE/UPPER KEYS, FLORIDA
From 27-SEP-22 20:00:00 to 28-SEP-22 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Oceanside storm surge flooding occurred with storm tide of 1.8 feet NAVD88 measured at the Snake Creek Bridge. Street flooding was noted along the oceanfront of the Upper Florida Keys in Islamorada, Tavernier and Rock Harbor.  Wave overwash occurred onto U.S. Highway 1 at Sea Oats Beach on Lower Matecumbe Key.