On Friday, 13 December 2019, a warm front lifted and lingered across northeast Florida with surface dew points rising into the mid to upper 60s generally along and south of a line from St. Augustine to Gainesville. A strong upper level trough deepened across the central Gulf Coast region with a resultant surface low positioned over the northeast Gulf of Mexico coast just south of Panama City that evening around 10 pm EST. As the upper level trough axis started to lift and becoming positively tilted overnight into 14 December, the surface low edge farther east northeast and tracked over southeast Georgia then offshore of the local Atlantic coast through 4 am EST. The corridor of unstable low-level air remained across our southern Florida zones with surface-based CAPE values rising into the 1000-1300 J/kg range per LAPS analysis while aloft strong directional (0-6 km) bulk shear near the mid/upper level trough axis increased to 50-70 kts. The phased low-level instability, plentiful deep layer moisture and strong dynamical lift under the upper low and just south of the surface low spawned a couple of persistent supercells with long-lived mesocyclones.

Thunderstorm Wind in ALACHUA, FLORIDA
From 14-DEC-19 03:50:00 to 14-DEC-19 03:50:00 (EST-5)
Location: KIRKWOOD
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Two tree were blown down and blocked the roadway at the intersection of South US Highway 441 and SE 134th Avenue. Possible Tornado Damage.

Tornado in ALACHUA, FLORIDA
From 14-DEC-19 03:53:00 to 14-DEC-19 03:55:00 (EST-5)
Location: KIRKWOOD
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Significant damage occurred to University of Florida recreational property at Lake Wauburg along the north shore. There were widespread downed trees, damaged watercrafts, broken docks and fences and the boat shelter was severely damaged.

Thunderstorm Wind in PUTNAM, FLORIDA
From 14-DEC-19 04:30:00 to 14-DEC-19 04:30:00 (EST-5)
Location: PALATKA KAY ARKIN AR
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Widespread tree and power line damage in the city limits of Palatka.

Thunderstorm Wind in PUTNAM, FLORIDA
From 14-DEC-19 04:35:00 to 14-DEC-19 04:35:00 (EST-5)
Location: MANNVILLE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wind damage occurred along Marion Avenue NNE of Interlachen near the Fowler area. Damage included widespread trees downs and some structural damage to fences. The time of damage was based on radar.

Thunderstorm Wind in PUTNAM, FLORIDA
From 14-DEC-19 04:25:00 to 14-DEC-19 04:25:00 (EST-5)
Location: INTERLACHEN
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Widespread wind damage occurred NNE of Interlachen along Maltas Avenue in the Interlachen Lakes Estates area.  Structural damage and widespread tree damage occurred. Witnesses reported a loud roaring noise. Note that this storm did produced a tornado touchdown just west of the this location near Lake Waubug and another tornado touchdown east of this location near Elkton Florida.

Thunderstorm Wind in ALACHUA, FLORIDA
From 14-DEC-19 03:55:00 to 14-DEC-19 03:55:00 (EST-5)
Location: ROCHELLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

State Watch office relayed report of major tree and power line damage along County Road 234 between Micanopy and Rochelle. A tornado touchdown was confirmed just south of this damage area at Lake Waubug.

Funnel Cloud in ST. JOHNS, FLORIDA
From 14-DEC-19 05:20:00 to 14-DEC-19 05:20:00 (EST-5)
Location: MOULTRIE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A funnel cloud was reported over 762 Gilda Drive.

Thunderstorm Wind in ALACHUA, FLORIDA
From 14-DEC-19 03:46:00 to 14-DEC-19 03:46:00 (EST-5)
Location: MICANOPY
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

The State Watch Office relayed a report from Alachua County 911 of widespread tree and power line damage near Micanopy including along 11300 SE County Road 243 and Wacahoota Road. Possible tornado damage.

Thunderstorm Wind in PUTNAM, FLORIDA
From 14-DEC-19 04:10:00 to 14-DEC-19 04:10:00 (EST-5)
Location: INTERLACHEN
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Widespread reports of tree damage, power lines down and exterior building structure damage occurred in West Interlachen. The time of damage was based on radar imagery. This same storm produced a tornado touchdown just west near Lake Waubug. Another tornado touchdown occurred from this same storm east near Elkton.

Tornado in FLAGLER, FLORIDA
From 14-DEC-19 05:14:00 to 14-DEC-19 05:40:00 (EST-5)
Location: ST JOHNS PARK
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A long-lived EF1 tornado tracked west to east across Flagler county during the pre-dawn hours. The tornado entered the west side of the county near Mud Lake within the Haw Creek Preserve around 5:15 am and continued a steady east to northeast track across the central part of the county and impacted Korona and then exited offshore of the local coast near Gamble Rogers Memorial State Recreation Area, about 1 mile south of Flagler Beach around 5:40 am.  The storm survey revealed the most substantial damage within the Korona city limits where EF1 damage occurred. Numerous trees, powerlines and structures were damaged. One masonary structure had its roof blown off in Korona.  The following are timing of reports to relayed to the NWS from Flagler County EM: 530 am 2 SSW Flagler Beach a tree was blown down through a roof of a home along Creek Bluff Run in Bulowville, 532 am many roads were closed near Korona and County Road 330 due to widespread tree damage, 532 am several structures had damage behind the White Eagle Lounge in Korona, 536 am a motorhome was flipped and had roof and deck damage along South 28th Street in Flagler Beach, 536 am oak trunks were twisted and trees heavily damaged along Creek Bluff Run, 540 am debris was across the roads and street lights were damaged between South 23rd Street and South 28th Street in South Flagler Beach, and at 540 am some structural damage was reported between south Flagler Beach and Bulowville.

Tornado in ST. JOHNS, FLORIDA
From 14-DEC-19 05:05:00 to 14-DEC-19 05:07:00 (EST-5)
Location: ELKTON
Tornado F-scale: EF0
Reported by: NWS Storm Survey

The tornado appeared to have touched down shortly after 5 am and tracked ENE from near the SW corner of Saint Ambrose Church Road and County Road 305 and ended just east of County Road 207. A trained storm spotter reported a tornado  on the ground near State Road 207 and County Road 305 in Elkton around 5:05 am. Tree debris, shingles and part of a tin roof were reported in trees and across the ground.  A kitchen and bath store in Elkton sustained major roof damage as well as damage to their supplies stored outdoors including solid surface countertops. The official NWS Storm Survey estimated peak winds around 85 mph (EF0) and reported road signs that were bent and/or twisted in Elkton. Metal roof panels were stripped off of a building and thrown over a fence. A door was also extracted from a building.