Alert archive / Florida / Freeze Warnings in 2011
Freeze Warning 2, NWS Miami, FL
NWS Miami, FL issued this freeze warning at Jan 22, 2011, 1:18 PM EST for Glades County, Hendry County, Florida. It took effect at Jan 23, 2011, 3:00 AM EST. It was in force for 6 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
- Jan 22, 2011, 1:18 PM EST (18:18 UTC)
- In effect from
- Jan 23, 2011, 3:00 AM EST
- Expired
- Jan 23, 2011, 9:01 AM EST
- In force
- 6 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 18:24 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, 6.3 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
- 24 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 521 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
840 WWUS72 KMFL 221818 NPWMFL URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MIAMI FL 118 PM EST SAT JAN 22 2011 FLZ063-066-231400- /O.UPG.KMFL.FZ.A.0002.110123T0800Z-110123T1400Z/ /O.NEW.KMFL.FZ.W.0002.110123T0800Z-110123T1400Z/ GLADES-HENDRY- INCLUDING THE CITIES OF...MOORE HAVEN...CLEWISTON 118 PM EST SAT JAN 22 2011 ...FREEZE WARNING IN EFFECT FROM 3 AM TO 9 AM EST SUNDAY... THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 3 AM TO 9 AM EST SUNDAY. A MUCH COLDER AIR MASS WILL BE USHERING INTO THE AREA TONIGHT BEHIND THE COLD FRONT THAT MOVED ACROSS THE AREA EARLIER ON SATURDAY. TEMPERATURES ARE FORECAST TO FALL TO AROUND FREEZING ACROSS PORTIONS OF GLADES AND HENDRY COUNTIES TODAY PARTICULARLY ACR0SS AREAS WEST AND NORTHWEST OF LAKE OKEECHOBEE. THEREFORE...THE FREEZE WATCH HAS BEEN UPGRADED TO A FREEZE WARNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING IN SOUTH FLORIDA MEANS TEMPERATURES OF 32 DEGREES OR LOWER ARE IMMINENT OR HIGHLY LIKELY...FOR ANY DURATION OF TIME ACROSS THE AREAS DESCRIBED ABOVE. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION PARTICULARLY IF NO PROTECTIVE ACTIONS ARE TAKEN. && $$ PS
1 follow-up statement
942 WWUS72 KMFL 231401 NPWMFL URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MIAMI FL 901 AM EST SUN JAN 23 2011 ...FREEZE WARNING IS ALLOWED TO EXPIRED AT 9 AM... FLZ063-066-231515- /O.CAN.KMFL.FZ.W.0002.000000T0000Z-110123T1400Z/ GLADES-HENDRY- INCLUDING THE CITIES OF...MOORE HAVEN...CLEWISTON 901 AM EST SUN JAN 23 2011 ...FREEZE WARNING IS ALLOWED TO EXPIRE... TEMPERATURES HAVE CLIMBED ABOVE THE FREEZING MARK, THEREFORE THE NATIONAL WEATHER SERVICE IN MIAMI HAS ALLOWED THE FREEZE WARNING TO EXPIRE AT 9 AM. $$
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 22, 4:14 AM EST | Small Craft Advisory | MFL | 34 hr | |
| Jan 22, 5:43 AM EST | Dense Fog Advisory | MFL | Broward, Collier, Glades, Hendry, Miami-Dade, Monroe and 1 more | 3 hr |
| Jan 22, 5:47 AM EST | Marine Dense Fog Advisory | MFL | 3 hr | |
| Jan 22, 2:25 PM EST | Fire Weather Watch | MFL | Collier | 14 hr |
Nearby
Freeze Warnings in Florida, 2011Every freeze warning in 2011
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.