Alert archive / Georgia / Heat Advisories in 2023
Heat Advisory 21, NWS Jacksonville, FL
NWS Jacksonville, FL issued this heat advisory at Aug 25, 2023, 2:42 PM EDT for 11 counties in Florida; 14 counties in Georgia. It took effect at Aug 26, 2023, 12:00 PM EDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Aug 25, 2023, 2:42 PM EDT (18:42 UTC)
- In effect from
- Aug 26, 2023, 12:00 PM EDT
- Expired
- Aug 26, 2023, 5:50 PM EDT
- In force
- 6 hr
- Issued by
- NWS Jacksonville, FL
All 25 counties
Alachua County, FL, Baker County, FL, Bradford County, FL, Clay County, FL, Duval County, FL, Gilchrist County, FL, Marion County, FL, Nassau County, FL, Putnam County, FL, Suwannee County, FL, Union County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Brantley County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Echols County, GA, Glynn County, GA, Jeff Davis County, GA, Pierce County, GA, Ware County, GA, Wayne County, GA
The radar
The Jacksonville radar (KJAX), 58 km from the middle of the area, began a volume at 18:42 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, 6.7 hours before the alert went out and 58 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
- 353 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 982 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 27 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 25, 2:47 AM EDT | Rip Current Statement | JAX | Duval, Flagler, Nassau | 23 hr |
| Aug 25, 7:49 PM EDT | Special Weather Statement | JAX | Suwannee | 26 min |
| Aug 25, 3:15 PM EDT | Special Weather Statement | JAX | Wayne | 30 min |
| Aug 25, 3:47 PM EDT | Special Weather Statement | JAX | Wayne | 28 min |
| Aug 25, 3:49 PM EDT | Special Weather Statement | JAX | Appling | 41 min |
| Aug 25, 4:07 PM EDT | Special Weather Statement | JAX | Appling, Jeff Davis | 38 min |
| Aug 25, 4:46 PM EDT | Special Weather Statement | JAX | Bacon, Pierce | 44 min |
| Aug 25, 4:56 PM EDT | Special Weather Statement | JAX | Coffee | 49 min |
| Aug 25, 4:59 PM EDT | Special Weather Statement | JAX | Jeff Davis | 46 min |
| Aug 25, 5:28 PM EDT | Special Weather Statement | JAX | Ware | 47 min |
| Aug 25, 5:33 PM EDT | Special Weather Statement | JAX | Coffee | 57 min |
| Aug 25, 5:56 PM EDT | Special Weather Statement | JAX | Atkinson | 49 min |
Nearby
Heat Advisories in Georgia, 2023Heat Advisories in Florida, 2023Every heat advisory in 2023
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.