A weak area of low surface low pressure formed along a frontal boundary that was draped across the local area. Aloft, shortwave impulses traversed with the better dynamic
forcing over southeast GA. The entire airmass was primed (PWAT over 2 inches) and prevailing westerly steering flow focused the strongest convection along the sea breezes mergers toward the I-95 corridor in the afternoon and into the evening. A cluster of storms formed along the front across NE FL and Duval county. When these slow moving storms encountered the east coast sea breeze as it moved inland, very heavy rainfall rates produced local flooding across portions of downtown Jacksonville, including the Hogans Creek basin near UF Shands.

Thunderstorm Wind in ST. JOHNS, FLORIDA
From 18-AUG-22 15:00:00 to 18-AUG-22 15:00:00 (EST-5)
Location: PONTE VEDRA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Power lines were blown down from thunderstorm winds just south of Ponte Vedra Beach.

Thunderstorm Wind in DUVAL, FLORIDA
From 18-AUG-22 16:35:00 to 18-AUG-22 16:35:00 (EST-5)
Location: SOUTHSIDE ESTATES
Magnitude: 40.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree was blown down onto a power line. The cost of damage was estimated for inclusion of the event in Storm Data.

Heavy Rain in DUVAL, FLORIDA
From 18-AUG-22 15:30:00 to 18-AUG-22 15:30:00 (EST-5)
Location: SAN PABLO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A mesonet station 2748D San Pablo measured 2.08 inches of rainfall in the afternoon.

Heavy Rain in DUVAL, FLORIDA
From 18-AUG-22 15:26:00 to 18-AUG-22 15:26:00 (EST-5)
Location: ISLE OF PALMS SOUTH
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A mesonet station AS298 Jacksonville Beach measured 2.02 inches of rainfall in the afternoon.

Heavy Rain in DUVAL, FLORIDA
From 18-AUG-22 14:10:00 to 18-AUG-22 15:10:00 (EST-5)
Location: PLUMMERS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A personal weather station KFL JACK 3466 measured 2.99 inches of rainfall between around 3:10 pm to 4:10 pm. Surrounding stations reported 2 to 2.8 inches of rainfall.

Heavy Rain in DUVAL, FLORIDA
From 18-AUG-22 15:45:00 to 18-AUG-22 15:45:00 (EST-5)
Location: ATLANTIC BEACH
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet station GW1721 measured 2.20 inches of rainfall. Most of this rainfall occurred in the afternoon.

Heavy Rain in BAKER, FLORIDA
From 18-AUG-22 12:45:00 to 18-AUG-22 15:30:00 (EST-5)
Location: MANNING
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A personal weather station KFLGLENS19 measured 2.77 inches of rainfall between around 1:45 pm and 4:30 pm.

Lightning in DUVAL, FLORIDA
From 18-AUG-22 16:45:00 to 18-AUG-22 16:45:00 (EST-5)
Location: SOUTHSIDE ESTATES
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

A home was struck by lightning. The cost of damage was unknown and was estimated (likely low estimate) for inclusion of the event in Storm Data.

Thunderstorm Wind in MARION, FLORIDA
From 18-AUG-22 12:38:00 to 18-AUG-22 12:38:00 (EST-5)
Location: REDDICK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Duke Energy reported damage to utility equipment due to downed trees and limbs along NW 165th Street.

Thunderstorm Wind in PUTNAM, FLORIDA
From 18-AUG-22 13:25:00 to 18-AUG-22 13:25:00 (EST-5)
Location: INTERLACHEN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees were blown down in Interlachen from thunderstorm winds.

Thunderstorm Wind in CLAY, FLORIDA
From 18-AUG-22 14:25:00 to 18-AUG-22 14:25:00 (EST-5)
Location: BELLAIR WEST
Magnitude: 40.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree fell onto 3 vehicles in the parking lot at OP Medical Hospital. The time of damage was based on radar. The cost of damage was unknown but it was estimated for inclusion of the event in Storm Data.

Lightning in DUVAL, FLORIDA
From 18-AUG-22 17:26:00 to 18-AUG-22 17:26:00 (EST-5)
Location: BOWDEN
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Lightning struck an electrical pole and a transformer. This caused the transformer to leak oil onto the pavement. The cost of damage was unknown but estimated for inclusion of the event in Storm Data. It is likely an underestimate.

Flood in DUVAL, FLORIDA
From 18-AUG-22 15:00:00 to 18-AUG-22 17:00:00 (EST-5)
Location: JACKSONVILLE
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Around 4 pm, street flooding was first reported along Myrtle Avenue. There was about inches of water in depth across the street. This report was from Broadcast media. At 410 pm, broadcast media reported street flooding along Main Street in the Springfield area of north Jacksonville. There was a video shared via social media that showed about 6 inches of water across the road with water rise tot he clearance height of cars. There was also a video of Hogan's Creek exceeding bank full into the grass and over the sidewalk. At 515 pm, emergency management relayed that there was severe parking lot flooding with vehicles stranded in the parking lot due to Hogans Creek flooding and very poor drainage at UF Shands in the Pavilion parking lot. This is a known drainage issue area. Some flooded water infiltrated into the Pavilion building into the lower floor.  Radar indicated about 2-2.5 inches of rainfall in about 1-1.25 hrs across these areas.  The cost of damage is an estimate, and it is likely an underestimate for the damage caused.