Alert archive / Florida / Frost Advisories in 2021
Frost Advisory 10, NWS Jacksonville, FL
NWS Jacksonville, FL issued this frost advisory at Nov 23, 2021, 2:34 PM EST for 5 counties in Florida; 5 counties in Georgia. It took effect at Nov 24, 2021, 1:00 AM EST. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Nov 23, 2021, 2:34 PM EST (19:34 UTC)
- In effect from
- Nov 24, 2021, 1:00 AM EST
- Expired
- Nov 24, 2021, 8:00 AM EST
- In force
- 7 hr
- Issued by
- NWS Jacksonville, FL
Counties Baker County, FL, Gilchrist County, FL, Nassau County, FL, Suwannee County, FL, Union County, FL, Brantley County, GA, Camden County, GA, Charlton County, GA, Glynn County, GA, Ware County, GA
The radar
The Jacksonville radar (KJAX), 49 km from the middle of the area, began a volume at 19:39 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, 7.6 hours before the alert went out and 48 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
- 1638 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
421 WWUS72 KJAX 231934 NPWJAX URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 234 PM EST Tue Nov 23 2021 GAZ162-163-241015- /O.EXA.KJAX.FZ.W.0007.211124T0600Z-211124T1300Z/ Echols-Clinch- Including the cities of Needmore, Statenville, and Homerville 234 PM EST Tue Nov 23 2021 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 8 AM EST WEDNESDAY... * WHAT...Sub-freezing temperatures as low as 32 expected. * WHERE...Echols and Clinch Counties. * WHEN...From 1 AM to 8 AM EST Wednesday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Appropriate action should be taken to ensure tender vegetation and outdoor pets have adequate protection from the cold temperatures. Young children, the elderly and the homeless are especially vulnerable to the cold. Take measures to protect them. && $$ GAZ132>136-149-151-250-241015- /O.CON.KJAX.FZ.W.0007.211124T0600Z-211124T1300Z/ Coffee-Jeff Davis-Bacon-Appling-Wayne-Atkinson-Pierce- Northern Ware- Including the cities of Douglas, Hazlehurst, Alma, New Lacy, Baxley, Pine Grove, Plant Hatch, Doctortown, Gardi, Jesup, Axson, Pearson, Willacoochee, Blackshear, Needham, and Waycross 234 PM EST Tue Nov 23 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 8 AM EST WEDNESDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Pierce, Coffee, Jeff Davis, Bacon, Wayne, Northern Ware, Appling and Atkinson Counties. * WHEN...From 1 AM to 8 AM EST Wednesday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Appropriate action should be taken to ensure tender vegetation and outdoor pets have adequate protection from the cold temperatures. Young children, the elderly and the homeless are especially vulnerable to the cold. Take measures to protect them. && $$ FLZ020-021-023-024-030-035-122-222-GAZ152-153-165-264-350-364- 241015- /O.NEW.KJAX.FR.Y.0010.211124T0600Z-211124T1300Z/ Hamilton-Suwannee-Baker-Inland Nassau-Union-Gilchrist- Northern Columbia-Southern Columbia-Brantley-Inland Glynn- Inland Camden-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, Ratliff, Hilliard, Kings Ferry, Bryceville, Lake Butler, Trenton, Winfield, Suwannee Valley, Columbia, Lake City, Oleno State Park, Lulu, Watertown, Atkinson, Hickox, Hortense, Nahunta, Raybon, Waynesville, Hoboken, Thalmann, Colesburg, Tarboro, Waverly, Woodbine, Winokur, Folkston, St. George, Homeland, Race Pond, and Stephen Foster State Park 234 PM EST Tue Nov 23 2021 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM EST WEDNESDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of southeast Georgia and northeast and northern Florida. * WHEN...From 1 AM to 8 AM EST Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
2 follow-up statements
391 WWUS72 KJAX 240620 NPWJAX URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 120 AM EST Wed Nov 24 2021 GAZ132>136-149-151-162-163-250-241300- /O.CON.KJAX.FZ.W.0007.000000T0000Z-211124T1300Z/ Coffee-Jeff Davis-Bacon-Appling-Wayne-Atkinson-Pierce-Echols- Clinch-Northern Ware- Including the cities of Douglas, Hazlehurst, Alma, New Lacy, Baxley, Pine Grove, Plant Hatch, Doctortown, Gardi, Jesup, Axson, Pearson, Willacoochee, Blackshear, Needmore, Statenville, Homerville, Needham, and Waycross 120 AM EST Wed Nov 24 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EST THIS MORNING... * WHAT...Sub-freezing temperatures 28 to 30 expected. * WHERE...Pierce, Coffee, Jeff Davis, Bacon, Wayne, Northern Ware, Appling and Atkinson Counties. * WHEN...From 1 AM to 8 AM EST Wednesday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Appropriate action should be taken to ensure tender vegetation and outdoor pets have adequate protection from the cold temperatures. Young children, the elderly and the homeless are especially vulnerable to the cold. Take measures to protect them. && $$ FLZ020-021-023-024-030-035-122-222-GAZ152-153-165-264-350-364- 241300- /O.CON.KJAX.FR.Y.0010.000000T0000Z-211124T1300Z/ Hamilton-Suwannee-Baker-Inland Nassau-Union-Gilchrist- Northern Columbia-Southern Columbia-Brantley-Inland Glynn- Inland Camden-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, Ratliff, Hilliard, Kings Ferry, Bryceville, Lake Butler, Trenton, Winfield, Suwannee Valley, Columbia, Lake City, Oleno State Park, Lulu, Watertown, Atkinson, Hickox, Hortense, Nahunta, Raybon, Waynesville, Hoboken, Thalmann, Colesburg, Tarboro, Waverly, Woodbine, Winokur, Folkston, St. George, Homeland, Race Pond, and Stephen Foster State Park 120 AM EST Wed Nov 24 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EST THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of southeast Georgia and northeast and northern Florida. * WHEN...From 1 AM to 8 AM EST Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
242 WWUS72 KJAX 241302 NPWJAX URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 802 AM EST Wed Nov 24 2021 GAZ132>136-149-151-162-163-250-241415- /O.EXP.KJAX.FZ.W.0007.000000T0000Z-211124T1300Z/ Coffee-Jeff Davis-Bacon-Appling-Wayne-Atkinson-Pierce-Echols- Clinch-Northern Ware- Including the cities of Douglas, Hazlehurst, Alma, New Lacy, Baxley, Pine Grove, Plant Hatch, Doctortown, Gardi, Jesup, Axson, Pearson, Willacoochee, Blackshear, Needmore, Statenville, Homerville, Needham, and Waycross 802 AM EST Wed Nov 24 2021 ...FREEZE WARNING HAS EXPIRED... $$ FLZ020-021-023-024-030-035-122-222-GAZ152-153-165-264-350-364- 241415- /O.EXP.KJAX.FR.Y.0010.000000T0000Z-211124T1300Z/ Hamilton-Suwannee-Baker-Inland Nassau-Union-Gilchrist- Northern Columbia-Southern Columbia-Brantley-Inland Glynn- Inland Camden-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, Ratliff, Hilliard, Kings Ferry, Bryceville, Lake Butler, Trenton, Winfield, Suwannee Valley, Columbia, Lake City, Oleno State Park, Lulu, Watertown, Atkinson, Hickox, Hortense, Nahunta, Raybon, Waynesville, Hoboken, Thalmann, Colesburg, Tarboro, Waverly, Woodbine, Winokur, Folkston, St. George, Homeland, Race Pond, and Stephen Foster State Park 802 AM EST Wed Nov 24 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 |
|---|---|---|---|---|
| Nov 23, 1:06 AM EST | Rip Current Statement | JAX | Duval, Flagler, Nassau | 42 hr |
| Nov 23, 1:14 AM EST | Gale Warning | JAX | 11 hr | |
| Nov 23, 1:14 AM EST | Small Craft Advisory | JAX | 38 hr | |
| Nov 23, 1:08 AM EST | Freeze Warning | JAX | Appling, Atkinson, Bacon, Clinch, Coffee, Echols and 4 more | 31 hr |
Nearby
Frost Advisories in Florida, 2021Frost Advisories in Georgia, 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.