Alert archive / Georgia / Freeze Warnings in 2017
Freeze Warning 5, NWS Jacksonville, FL
NWS Jacksonville, FL issued this freeze warning at Dec 9, 2017, 12:35 PM EST for 6 counties in Florida; 12 counties in Georgia. It took effect at Dec 10, 2017, 1:00 AM EST. It was in force for 8 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
- Dec 9, 2017, 12:35 PM EST (17:35 UTC)
- In effect from
- Dec 10, 2017, 1:00 AM EST
- Expired
- Dec 10, 2017, 9:00 AM EST
- In force
- 8 hr
- Issued by
- NWS Jacksonville, FL
Counties Baker County, FL, Bradford County, FL, Gilchrist County, FL, Nassau County, FL, Suwannee County, FL, Union County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Brantley County, GA, Camden County, GA, Clinch County, GA, Coffee County, GA, Echols County, GA, Glynn County, GA, Jeff Davis County, GA, Pierce County, GA, Wayne County, GA
The radar
The Moody AFB radar (KVAX), 62 km from the middle of the area, began a volume at 17:36 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, 5.6 hours before the alert went out and 78 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
- 6 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 439 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- -96 m²/s²
- 0-3 km storm-relative helicity
- -221 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 |
|---|---|---|---|---|
| Dec 8, 7:11 PM EST | Areal Flood Advisory | JAX | Alachua, Bradford | 3 hr |
| Dec 8, 8:07 PM EST | Special Weather Statement | JAX | Marion | 38 min |
| Dec 8, 8:46 PM EST | Special Weather Statement | JAX | Marion | 44 min |
| Dec 8, 9:32 PM EST | Special Weather Statement | JAX | Flagler | 43 min |
| Dec 8, 10:08 PM EST | Severe Thunderstorm Warning | JAX | Marion | 37 min |
| Dec 8, 10:59 PM EST | Special Weather Statement | JAX | Marion | 46 min |
| Dec 9, 12:35 PM EST | Freeze Watch | JAX | Baker, Bradford, Gilchrist, Nassau, Suwannee, Union | 25 hr |
Nearby
Freeze Warnings in Georgia, 2017Freeze Warnings in Florida, 2017Every freeze warning in 2017
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.