Alert archive / Georgia / Areal Flood Warnings in 2021
Areal Flood Warning 84, NWS Jacksonville, FL
NWS Jacksonville, FL issued this areal flood warning at Sep 16, 2021, 10:37 AM EDT for Coffee County, Georgia. 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
- Sep 16, 2021, 10:37 AM EDT (14:37 UTC)
- Expired
- Sep 16, 2021, 1:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
- Flood severity
- None
County Coffee County, GA
The radar
The Moody AFB radar (KVAX), 75 km from the middle of the area, began a volume at 14:36 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
Jacksonville, FL (KJAX), launched 12:00Z, 2.6 hours before the alert went out and 160 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
- 1536 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 760 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
What forecasters said that day
The local office's own words before this areal 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 areal flood warning went out at Sep 16, 8:04 AM EDT, 2 hours 33 minutes earlier.
Area forecast discussion, Sep 16, 8:04 AM EDT, 2 hours 33 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 |
|---|---|---|---|---|
| Sep 16, 3:02 PM EDT | Special Weather Statement | JAX | Duval, Nassau | 28 min |
| Sep 16, 4:55 PM EDT | Special Weather Statement | JAX | Nassau | 35 min |
| Sep 16, 5:28 PM EDT | Special Weather Statement | JAX | Duval | 32 min |
| Sep 16, 5:55 PM EDT | Special Weather Statement | JAX | Duval | 35 min |
| Sep 16, 6:07 PM EDT | Flash Flood Warning | JAX | Clay, Duval, Saint Johns | 3 hr |
| Sep 16, 12:01 PM EDT | Special Weather Statement | JAX | Coffee | 29 min |
| Sep 16, 12:39 PM EDT | Special Weather Statement | JAX | Coffee, Jeff Davis | 51 min |
| Sep 16, 1:38 PM EDT | Special Weather Statement | JAX | Jeff Davis | 52 min |
| Sep 16, 2:34 PM EDT | Special Weather Statement | JAX | Appling, Bacon | 26 min |
| Sep 16, 3:00 PM EDT | Special Weather Statement | JAX | Appling, Bacon, Pierce | 30 min |
| Sep 16, 3:22 PM EDT | Special Weather Statement | JAX | Brantley, Pierce | 23 min |
| Sep 16, 3:47 PM EDT | Special Weather Statement | JAX | Brantley, Pierce | 28 min |
| Sep 16, 4:14 PM EDT | Special Weather Statement | JAX | Brantley, Pierce, Wayne | 31 min |
| Sep 16, 6:16 PM EDT | Areal Flood Warning | JAX | Brantley, Camden, Glynn, Wayne | 3 hr |
| Sep 16, 6:21 PM EDT | Special Weather Statement | JAX | Clinch | 24 min |
Nearby
Areal Flood Warnings in Georgia, 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.