Alert archive / Florida / Areal Flood Warnings in 2021
Areal Flood Warning 70, NWS Jacksonville, FL
NWS Jacksonville, FL issued this areal flood warning at Aug 11, 2021, 11:23 PM EDT for Hamilton County, Suwannee County, Florida. It was in force for 3 hr. 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 11, 2021, 11:23 PM EDT (03:23 UTC)
- Expired
- Aug 12, 2021, 2:30 AM EDT
- In force
- 3 hr
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Hamilton County, FL, Suwannee County, FL
The radar
The Moody AFB radar (KVAX), 61 km from the middle of the area, began a volume at 03:25 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
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 3.4 hours before the alert went out and 128 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
- 2619 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 1031 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 8:26 PM EDT | Special Weather Statement | JAX | Gilchrist | 34 min |
| Aug 11, 9:16 PM EDT | Special Weather Statement | JAX | Hamilton | 29 min |
| Aug 11, 9:45 PM EDT | Special Weather Statement | JAX | Hamilton | 30 min |
| Aug 11, 10:26 PM EDT | Special Weather Statement | JAX | Suwannee | 49 min |
| Aug 11, 10:30 PM EDT | Special Weather Statement | JAX | Hamilton | 45 min |
| Aug 11, 10:41 PM EDT | Special Weather Statement | JAX | Suwannee | 49 min |
| Aug 11, 10:59 PM EDT | Special Weather Statement | JAX | Suwannee | 46 min |
| Aug 11, 11:40 PM EDT | Special Weather Statement | JAX | Hamilton | 50 min |
| Aug 12, 12:04 AM EDT | Special Weather Statement | JAX | Hamilton | 41 min |
| Aug 12, 2:10 PM EDT | Special Weather Statement | JAX | Saint Johns | 35 min |
| Aug 12, 2:27 PM EDT | Special Weather Statement | JAX | Marion | 33 min |
| Aug 12, 2:32 PM EDT | Special Weather Statement | JAX | Clay | 28 min |
| Aug 12, 2:41 PM EDT | Special Weather Statement | JAX | Marion | 34 min |
| Aug 12, 3:03 PM EDT | Special Weather Statement | JAX | Marion | 42 min |
| Aug 12, 3:09 PM EDT | Special Weather Statement | JAX | Duval | 36 min |
| Aug 12, 3:44 PM EDT | Special Weather Statement | JAX | Marion | 31 min |
| Aug 12, 5:09 PM EDT | Special Weather Statement | JAX | Suwannee | 36 min |
| Aug 12, 6:29 PM EDT | Special Weather Statement | JAX | Gilchrist | 31 min |
| Aug 12, 6:48 PM EDT | Special Weather Statement | JAX | Columbia | 27 min |
| Aug 12, 7:15 PM EDT | Special Weather Statement | JAX | Suwannee | 30 min |
| Aug 12, 12:55 AM EDT | Special Weather Statement | JAX | Clinch | 50 min |
Nearby
Areal Flood Warnings in Florida, 2021Every areal flood warning in 2021
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.