Alert archive / Georgia / Frost Advisories in 2021
Frost Advisory 13, NWS Jacksonville, FL
NWS Jacksonville, FL issued this frost advisory at Dec 22, 2021, 2:19 PM EST for 12 counties in Georgia; Baker County, Gilchrist County, Suwannee County, Florida. It took effect at Dec 23, 2021, 3:00 AM EST. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Dec 22, 2021, 2:19 PM EST (19:19 UTC)
- In effect from
- Dec 23, 2021, 3:00 AM EST
- Expired
- Dec 23, 2021, 8:00 AM EST
- In force
- 5 hr
- Issued by
- NWS Jacksonville, FL
Counties Baker County, FL, Gilchrist County, FL, Suwannee County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Brantley County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Echols County, GA, Jeff Davis County, GA, Pierce County, GA, Ware County, GA, Wayne County, GA
The radar
The Moody AFB radar (KVAX), 51 km from the middle of the area, began a volume at 19:20 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, 7.3 hours before the alert went out and 98 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
- 645 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
935 WWUS72 KJAX 221919 NPWJAX URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 219 PM EST Wed Dec 22 2021 FLZ020-021-023-035-122-222-GAZ132>136-149-151-152-162-163-250-264- 350-364-231300- /O.NEW.KJAX.FR.Y.0013.211223T0800Z-211223T1300Z/ Hamilton-Suwannee-Baker-Gilchrist-Northern Columbia- Southern Columbia-Coffee-Jeff Davis-Bacon-Appling-Wayne-Atkinson- Pierce-Brantley-Echols-Clinch-Northern Ware-Northeastern Charlton- Southern Ware-Western Charlton- Including the cities of Jasper, Jennings, West Lake, Belmont, White Springs, Houston, Live Oak, McAlpin, Newburn, Suwannee Springs, Macclenny, Olustee, Trenton, Winfield, Suwannee Valley, Columbia, Lake City, Oleno State Park, Lulu, Watertown, Douglas, Hazlehurst, Alma, New Lacy, Baxley, Pine Grove, Plant Hatch, Doctortown, Gardi, Jesup, Axson, Pearson, Willacoochee, Blackshear, Atkinson, Hickox, Hortense, Nahunta, Raybon, Waynesville, Hoboken, Needmore, Statenville, Homerville, Needham, Waycross, Winokur, Folkston, St. George, Homeland, Race Pond, and Stephen Foster State Park 219 PM EST Wed Dec 22 2021 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM EST THURSDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of southeast Georgia and northeast and northern Florida. * WHEN...From 3 AM to 8 AM EST Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
1 follow-up statement
491 WWUS72 KJAX 231306 NPWJAX URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 806 AM EST Thu Dec 23 2021 FLZ020-021-023-035-122-222-GAZ132>136-149-151-152-162-163-250-264- 350-364-231415- /O.EXP.KJAX.FR.Y.0013.000000T0000Z-211223T1300Z/ Hamilton-Suwannee-Baker-Gilchrist-Northern Columbia- Southern Columbia-Coffee-Jeff Davis-Bacon-Appling-Wayne-Atkinson- Pierce-Brantley-Echols-Clinch-Northern Ware-Northeastern Charlton- Southern Ware-Western Charlton- Including the cities of Jasper, Jennings, West Lake, Belmont, White Springs, Houston, Live Oak, McAlpin, Newburn, Suwannee Springs, Macclenny, Olustee, Trenton, Winfield, Suwannee Valley, Columbia, Lake City, Oleno State Park, Lulu, Watertown, Douglas, Hazlehurst, Alma, New Lacy, Baxley, Pine Grove, Plant Hatch, Doctortown, Gardi, Jesup, Axson, Pearson, Willacoochee, Blackshear, Atkinson, Hickox, Hortense, Nahunta, Raybon, Waynesville, Hoboken, Needmore, Statenville, Homerville, Needham, Waycross, Winokur, Folkston, St. George, Homeland, Race Pond, and Stephen Foster State Park 806 AM EST Thu Dec 23 2021 ...FROST ADVISORY HAS EXPIRED... $$
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 22, 9:01 AM EST | Small Craft Advisory | JAX | 6 hr |
Nearby
Frost Advisories in Georgia, 2021Frost Advisories in Florida, 2021Every frost advisory 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.