Alert archive / Georgia / Frost Advisories in 2020
Frost Advisory 7, NWS Jacksonville, FL
NWS Jacksonville, FL issued this frost advisory at Dec 8, 2020, 2:33 AM EST for 10 counties in Florida; 14 counties in Georgia. It took effect at Dec 9, 2020, 12:00 AM EST. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Dec 8, 2020, 2:33 AM EST (07:33 UTC)
- In effect from
- Dec 9, 2020, 12:00 AM EST
- Expired
- Dec 9, 2020, 9:00 AM EST
- In force
- 9 hr
- Issued by
- NWS Jacksonville, FL
All 24 counties
Alachua County, FL, Baker County, FL, Bradford County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Marion 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, 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), 59 km from the middle of the area, began a volume at 07:33 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
Cape Canaveral, FL (KXMR), launched 00:00Z, 7.6 hours before the alert went out and 302 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1811 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 165 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
Nearby
Frost Advisories in Georgia, 2020Frost Advisories in Florida, 2020Every frost advisory in 2020
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.