Alert archive / Florida / Frost Advisories in 2012

Frost Advisory 2, NWS Miami, FL

February 12, 2012Collier County, Hendry County, Palm Beach County, Florida

NWS Miami, FL issued this frost advisory at Feb 12, 2012, 9:05 PM EST for Collier County, Hendry County, Palm Beach County, Florida. It took effect at Feb 13, 2012, 3:00 AM EST. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Feb 12, 2012, 9:05 PM EST (02:05 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

Counties Collier County, FL, Hendry County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 108 km from the middle of the area, began a volume at 02:07 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, 2.1 hours before the alert went out and 98 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, Miami, FL at 00:00Z on 2012-02-13Temperature 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, Miami, FL at 00:00Z on 2012-02-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -57 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
1628 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
-57 m²/s²
0-3 km storm-relative helicity
173 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.

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
1 follow-up statement
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.

$$

Nearby

Frost Advisories in Florida, 2012Every frost advisory 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.