Alert archive / Florida / Frost Advisories in 2021
Frost Advisory 1, NWS Miami, FL
NWS Miami, FL issued this frost advisory at Feb 3, 2021, 3:04 AM EST for 4 counties in Florida. It took effect at Feb 4, 2021, 4:00 AM EST. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Feb 3, 2021, 3:04 AM EST (08:04 UTC)
- In effect from
- Feb 4, 2021, 4:00 AM EST
- Expired
- Feb 4, 2021, 8:00 AM EST
- In force
- 4 hr
- Issued by
- NWS Miami, FL
Counties Collier County, FL, Glades County, FL, Hendry County, FL, Palm Beach County, FL
The radar
The Miami radar (KAMX), 123 km from the middle of the area, began a volume at 08:08 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
Miami, FL (KMFL), launched 00:00Z, 8.1 hours before the alert went out and 112 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
- 1955 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
568 WWUS72 KMFL 030804 NPWMFL URGENT - WEATHER MESSAGE National Weather Service Miami FL 304 AM EST Wed Feb 3 2021 FLZ066-041300- /O.NEW.KMFL.FR.Y.0001.210204T0900Z-210204T1300Z/ Hendry- Including the cities of Clewiston, LaBelle, and Big Cypress Seminole Reservation 304 AM EST Wed Feb 3 2021 ...FROST ADVISORY IN EFFECT FROM 4 AM TO 8 AM EST THURSDAY... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...Hendry County. * WHEN...From 4 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. && $$ FLZ063-041300- /O.NEW.KMFL.FZ.A.0001.210204T0900Z-210204T1300Z/ Glades- Including the cities of Palmdale and Moore Haven 304 AM EST Wed Feb 3 2021 ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING... * WHAT...Sub-freezing temperatures as low as 32 possible. * WHERE...Glades County. * WHEN...From late tonight through Thursday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Cold weather shelters may be open in your location tonight. Check with local county emergency management for locations and operating hours of shelters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ Baxter
4 follow-up statements
353 WWUS72 KMFL 031652 NPWMFL URGENT - WEATHER MESSAGE National Weather Service Miami FL 1152 AM EST Wed Feb 3 2021 FLZ067-041100- /O.EXA.KMFL.FR.Y.0001.210204T0900Z-210204T1300Z/ Inland Palm Beach- Including the cities of Pahokee, South Bay, Belle Glade, Wellington, Lion Country Safari, and South County Regional Park 1152 AM EST Wed Feb 3 2021 ...FROST ADVISORY IN EFFECT FROM 4 AM TO 8 AM EST THURSDAY... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...Inland Palm Beach County. * WHEN...From 4 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. && $$ FLZ070-041100- /O.EXA.KMFL.FR.Y.0001.210204T0900Z-210204T1300Z/ Inland Collier- Including the city of Immokalee 1152 AM EST Wed Feb 3 2021 ...FROST ADVISORY IN EFFECT FROM 4 AM TO 8 AM EST THURSDAY... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...Inland Collier County. * WHEN...From 4 AM to 8 AM EST Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ FLZ066-041100- /O.CON.KMFL.FR.Y.0001.210204T0900Z-210204T1300Z/ Hendry- Including the cities of Clewiston, LaBelle, and Big Cypress Seminole Reservation 1152 AM EST Wed Feb 3 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 8 AM EST THURSDAY... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...Hendry County. * WHEN...From 4 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. && $$ FLZ063-041100- /O.CON.KMFL.FZ.A.0001.210204T0900Z-210204T1300Z/ Glades- Including the cities of Palmdale and Moore Haven 1152 AM EST Wed Feb 3 2021 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING... * WHAT...Sub-freezing temperatures as low as 32 possible. * WHERE...Glades County. * WHEN...From late tonight through Thursday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$
441 WWUS72 KMFL 031903 NPWMFL URGENT - WEATHER MESSAGE National Weather Service Miami FL 203 PM EST Wed Feb 3 2021 FLZ063-040315- /O.UPG.KMFL.FZ.A.0001.210204T0900Z-210204T1300Z/ /O.EXA.KMFL.FR.Y.0001.210204T0900Z-210204T1300Z/ Glades- Including the cities of Palmdale and Moore Haven 203 PM EST Wed Feb 3 2021 ...FROST ADVISORY IN EFFECT FROM 4 AM TO 8 AM EST THURSDAY... ...FREEZE WATCH IS NO LONGER IN EFFECT... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...Glades County. * WHEN...From 4 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. && $$ FLZ066-040315- /O.CON.KMFL.FR.Y.0001.210204T0900Z-210204T1300Z/ Hendry- Including the cities of Clewiston, LaBelle, and Big Cypress Seminole Reservation 203 PM EST Wed Feb 3 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 8 AM EST THURSDAY... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...Hendry County. * WHEN...From 4 AM to 8 AM EST Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ FLZ067-040315- /O.CON.KMFL.FR.Y.0001.210204T0900Z-210204T1300Z/ Inland Palm Beach- Including the cities of Pahokee, South Bay, Belle Glade, Wellington, Lion Country Safari, and South County Regional Park 203 PM EST Wed Feb 3 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 8 AM EST THURSDAY... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...Inland Palm Beach County. * WHEN...From 4 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. && $$ FLZ070-040315- /O.CON.KMFL.FR.Y.0001.210204T0900Z-210204T1300Z/ Inland Collier- Including the city of Immokalee 203 PM EST Wed Feb 3 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 8 AM EST THURSDAY... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...Inland Collier County. * WHEN...From 4 AM to 8 AM EST Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
799 WWUS72 KMFL 040759 NPWMFL URGENT - WEATHER MESSAGE National Weather Service Miami FL 259 AM EST Thu Feb 4 2021 FLZ066-041300- /O.CON.KMFL.FR.Y.0001.210204T0900Z-210204T1300Z/ Hendry- Including the cities of Clewiston, LaBelle, and Big Cypress Seminole Reservation 259 AM EST Thu Feb 4 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EST THIS MORNING... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Hendry County. * WHEN...From 4 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. && $$ FLZ067-041300- /O.CON.KMFL.FR.Y.0001.210204T0900Z-210204T1300Z/ Inland Palm Beach- Including the cities of Pahokee, South Bay, Belle Glade, Wellington, Lion Country Safari, and South County Regional Park 259 AM EST Thu Feb 4 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EST THIS MORNING... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...Inland Palm Beach County. * WHEN...From 4 AM to 8 AM EST Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ FLZ070-041300- /O.CON.KMFL.FR.Y.0001.210204T0900Z-210204T1300Z/ Inland Collier- Including the city of Immokalee 259 AM EST Thu Feb 4 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EST THIS MORNING... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...Inland Collier County. * WHEN...From 4 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. && $$ FLZ063-041300- /O.CON.KMFL.FR.Y.0001.210204T0900Z-210204T1300Z/ Glades- Including the cities of Palmdale and Moore Haven 259 AM EST Thu Feb 4 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EST THIS MORNING... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Glades County. * WHEN...From 4 AM to 8 AM EST Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Baxter
218 WWUS72 KMFL 041321 NPWMFL URGENT - WEATHER MESSAGE National Weather Service Miami FL 821 AM EST Thu Feb 4 2021 FLZ063-066-067-070-041430- /O.EXP.KMFL.FR.Y.0001.000000T0000Z-210204T1300Z/ Glades-Hendry-Inland Palm Beach-Inland Collier- Including the cities of Palmdale, Moore Haven, Clewiston, LaBelle, Big Cypress Seminole Reservation, Pahokee, South Bay, Belle Glade, Wellington, Lion Country Safari, South County Regional Park, and Immokalee 821 AM EST Thu Feb 4 2021 ...FROST ADVISORY HAS EXPIRED... Temperatures will gradually rise after with the sun rising and any frost that developed overnight will be diminishing. Therefore, the frost advisory has expired. $$
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 3, 3:04 AM EST | Freeze Watch | MFL | Glades | 11 hr |
Nearby
Frost 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.