Alert archive / Florida / Flash Flood Warnings in 2025
Flash Flood Warning 20, NWS Jacksonville, FL
NWS Jacksonville, FL issued this flash flood warning at Aug 8, 2025, 3:37 PM EDT for Putnam County, Florida. It was in force for 78 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 8, 2025, 3:37 PM EDT (19:37 UTC)
- Expired
- Aug 8, 2025, 4:55 PM EDT
- In force
- 78 min
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
- Flood severity
- None
County Putnam County, FL
The radar
The Jacksonville radar (KJAX), 97 km from the middle of the area, began a volume at 19:40 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 7.6 hours before the alert went out and 221 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 762 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 762 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- -17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Jacksonville, FL wrote its last area forecast discussion before this flash flood warning went out at Aug 7, 7:39 PM EDT, 19 hours 58 minutes earlier.
Area forecast discussion, Aug 7, 7:39 PM EDT, 19 hours 58 minutes before
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</html>The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 8:23 PM EDT | Areal Flood Advisory | JAX | Columbia | 3 hr |
| Aug 7, 8:27 PM EDT | Areal Flood Advisory | JAX | Alachua | 2 hr |
| Aug 7, 8:55 PM EDT | Special Weather Statement | JAX | Columbia | 35 min |
| Aug 7, 9:23 PM EDT | Areal Flood Advisory | JAX | Columbia | 3 hr |
| Aug 7, 9:28 PM EDT | Areal Flood Advisory | JAX | Baker | 2 hr |
| Aug 7, 9:51 PM EDT | Special Weather Statement | JAX | Columbia | 39 min |
| Aug 7, 10:20 PM EDT | Areal Flood Advisory | JAX | Hamilton, Suwannee | 115 min |
| Aug 8, 3:29 AM EDT | Areal Flood Advisory | JAX | Saint Johns | 2 hr |
| Aug 8, 5:32 AM EDT | Areal Flood Advisory | JAX | Duval, Saint Johns | 88 min |
| Aug 8, 5:33 AM EDT | Areal Flood Advisory | JAX | Flagler, Saint Johns | 87 min |
| Aug 8, 8:54 AM EDT | Areal Flood Advisory | JAX | Nassau | 112 min |
| Aug 8, 3:04 PM EDT | Areal Flood Advisory | JAX | Putnam | 2 hr |
| Aug 8, 1:39 PM EDT | Special Weather Statement | JAX | Glynn | 51 min |
| Aug 8, 2:05 PM EDT | Areal Flood Advisory | JAX | Glynn | 3 hr |
Nearby
Flash Flood Warnings in Florida, 2025Every flash flood warning in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.