Alert archive / Florida / Freeze Warnings in 2012
Freeze Warning 4, NWS Miami, FL
NWS Miami, FL issued this freeze warning at Dec 21, 2012, 2:31 PM EST for Glades County, Hendry County, Florida. It took effect at Dec 22, 2012, 2:00 AM EST. It was in force for 5 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 21, 2012, 2:31 PM EST (19:31 UTC)
- In effect from
- Dec 22, 2012, 2:00 AM EST
- Expired
- Dec 22, 2012, 7:29 AM EST
- In force
- 5 hr
- Issued by
- NWS Miami, FL
Counties Glades County, FL, Hendry County, FL
The radar
The Miami radar (KAMX), 148 km from the middle of the area, began a volume at 19:32 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 12:00Z, 7.5 hours before the alert went out and 137 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
- 33 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 957 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.6
The text
As transmitted, in the capitals the NWS used until 2016.
511 WWUS72 KMFL 211931 NPWMFL URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MIAMI FL 231 PM EST FRI DEC 21 2012 FLZ063-066-221400- /O.UPG.KMFL.FZ.A.0004.121222T0700Z-121222T1400Z/ /O.NEW.KMFL.FZ.W.0004.121222T0700Z-121222T1400Z/ /O.NEW.KMFL.FZ.A.0005.121223T0700Z-121223T1400Z/ GLADES-HENDRY- INCLUDING THE CITIES OF...MOORE HAVEN...CLEWISTON 231 PM EST FRI DEC 21 2012 ...FREEZE WARNING IN EFFECT FROM 2 AM TO 9 AM EST SATURDAY... ...FREEZE WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY MORNING... THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 2 AM TO 9 AM EST SATURDAY. A FREEZE WATCH HAS ALSO BEEN ISSUED. THIS FREEZE WATCH IS IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY MORNING. * TEMPERATURE...NEAR 32 DEGREES IN SOME SPOTS. * IMPACTS...POTENTIAL DAMAGE TO CROPS AND OTHER SENSITIVE VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS TEMPERATURES OF 32 DEGREES OR LOWER ARE IMMINENT OR HIGHLY LIKELY...FOR ANY DURATION OF TIME. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. A FREEZE WATCH MEANS TEMPERATURES OF 32 DEGREES OR LOWER ARE POSSIBLE...FOR ANY DURATION OF TIME. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$
1 follow-up statement
587 WWUS72 KMFL 221229 NPWMFL URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MIAMI FL 729 AM EST SAT DEC 22 2012 FLZ063-066-222030- /O.CAN.KMFL.FZ.W.0004.000000T0000Z-121222T1400Z/ /O.CON.KMFL.FZ.A.0005.121223T0700Z-121223T1400Z/ GLADES-HENDRY- INCLUDING THE CITIES OF...MOORE HAVEN...CLEWISTON 729 AM EST SAT DEC 22 2012 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY MORNING... ...FREEZE WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MIAMI HAS CANCELLED THE FREEZE WARNING. * TEMPERATURE...THE TEMPERATURES ACROSS THE AFFECTED AREA HAVE FALLEN INTO THE MID TO UPPER 30S WITH FREEZING CONDITIONS NO LONGER A THREAT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS TEMPERATURES OF 32 DEGREES OR LOWER ARE POSSIBLE...FOR ANY DURATION OF TIME. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 21, 4:30 AM EST | Wind Chill Advisory | MFL | Broward, Collier, Glades, Hendry, Miami-Dade, Palm Beach | 28 hr |
| Dec 21, 5:26 AM EST | Rip Current Statement | MFL | Collier | 14 hr |
| Dec 21, 5:52 AM EST | Red Flag Warning | MFL | Broward, Miami-Dade, Palm Beach | 11 hr |
| Dec 21, 2:31 PM EST | Freeze Watch | MFL | Glades, Hendry | 23 hr |
Nearby
Freeze Warnings in Florida, 2012Every freeze warning in 2012
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.