Alert archive / Florida / Freeze Warnings in 2012

Freeze Warning 3, NWS Miami, FL

February 12, 2012Glades County, Florida

NWS Miami, FL issued this freeze warning at Feb 12, 2012, 2:30 PM EST for Glades County, Florida. It took effect at Feb 13, 2012, 3:00 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
Feb 12, 2012, 2:30 PM EST (19:30 UTC)
In effect from
Feb 13, 2012, 3:00 AM EST
Expired
Feb 13, 2012, 8:00 AM EST
In force
5 hr
Issued by
NWS Miami, FL

County Glades County, FL

The radar

The Melbourne radar (KMLB), 139 km from the middle of the area, began a volume at 19:27 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

Tampa Bay, FL (KTBW), launched 12:00Z, 7.5 hours before the alert went out and 146 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.

Skew-T log-pSkew-T log-p diagram, Tampa Bay, FL at 12:00Z on 2012-02-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 12:00Z on 2012-02-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -183 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2386 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
-183 m²/s²
0-3 km storm-relative helicity
-165 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

257 
WWUS72 KMFL 121930
NPWMFL

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
230 PM EST SUN FEB 12 2012

FLZ063-131300-
/O.UPG.KMFL.FZ.A.0003.120213T0800Z-120213T1300Z/
/O.NEW.KMFL.FZ.W.0003.120213T0800Z-120213T1300Z/
GLADES-
INCLUDING THE CITY OF...MOORE HAVEN
230 PM EST SUN FEB 12 2012

...FREEZE WARNING IN EFFECT FROM 3 AM TO 8 AM EST MONDAY...

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM 3 AM TO 8 AM EST MONDAY. 

* TEMPERATURE...LOW TEMPERATURES EARLY MONDAY WILL RANGE BETWEEN
  30 AND 32 DEGREES, WITH TEMPERATURES AT OR BELOW FREEZING FOR
  TWO TO THREE HOURS IN SOME LOCALES ACROSS GLADES COUNTY.

* 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.

&&

$$
2 follow-up statements
976 
WWUS72 KMFL 130205
NPWMFL

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
905 PM EST SUN FEB 12 2012

FLZ063-131300-
/O.CON.KMFL.FZ.W.0003.120213T0800Z-120213T1300Z/
GLADES-
INCLUDING THE CITY OF...MOORE HAVEN
905 PM EST SUN FEB 12 2012

...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM EST
MONDAY...

* TEMPERATURE...LOW TEMPERATURES EARLY MONDAY WILL RANGE BETWEEN 
  30 AND 32 DEGREES...WITH TEMPERATURES AT OR BELOW FREEZING 
  FOR TWO TO THREE HOURS IN SOME LOCALES ACROSS GLADES COUNTY. 

* 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.

&&

$$

FLZ066-067-070-131300-
/O.NEW.KMFL.FR.Y.0002.120213T0800Z-120213T1300Z/
HENDRY-INLAND PALM BEACH-INLAND COLLIER-
INCLUDING THE CITIES OF...CLEWISTON...PAHOKEE...SOUTH BAY...
BELLE GLADE...IMMOKALEE
905 PM EST SUN FEB 12 2012

...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM EST MONDAY...

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 8 AM EST MONDAY. 

* TEMPERATURE...TEMPERATURES WILL FALL INTO THE MID 30S TONIGHT,
  AND WITH SUFFICIENT MOISTURE, LIGHT WINDS AND A MOSTLY CLEAR
  SKY, AREAS OF FROST IS EXPECTED TO FORM FROM THE BELLE GLADE
  REGION ACROSS HENDRY COUNTY AS WELL AS ACROSS INLAND COLLIER
  COUNTY...MAINLY NORTH AND EAST OF ALLIGATOR ALLEY. 

* IMPACTS...AREAS OF FROST WILL DEVELOP WHICH COULD DAMAGE
  SENSITIVE PLANTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

GREGORIA
978 
WWUS72 KMFL 131248
NPWMFL

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
748 AM EST MON FEB 13 2012

FLZ063-131400-
/O.EXP.KMFL.FZ.W.0003.000000T0000Z-120213T1300Z/
GLADES-
INCLUDING THE CITY OF...MOORE HAVEN
748 AM EST MON FEB 13 2012

...FREEZE WARNING WILL EXPIRE AT 8 AM EST THIS MORNING...

TEMPERATURES ARE NOW ABOVE FREEZING ACROSS GLADES COUNTY AND WILL
CONTINUE TO RISE STEADILY THROUGH THE MORNING. 

$$

FLZ066-067-070-131400-
/O.EXP.KMFL.FR.Y.0002.000000T0000Z-120213T1300Z/
HENDRY-INLAND PALM BEACH-INLAND COLLIER-
INCLUDING THE CITIES OF...CLEWISTON...PAHOKEE...SOUTH BAY...
BELLE GLADE...IMMOKALEE
748 AM EST MON FEB 13 2012

...FROST ADVISORY WILL EXPIRE AT 8 AM EST THIS MORNING...

TEMPERATURES ARE MAINLY IN THE UPPER 30S AND LOWER 40S AND WILL
CONTINUE TO STEADILY RISE THIS MORNING. THE THREAT OF FROST HAS
ENDED.

$$

The office that day

Everything else NWS Miami, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 12, 3:46 AM ESTRed Flag WarningMFLBroward, Collier, Miami-Dade, Monroe14 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.