Alert archive / Florida / Wind Chill Advisories in 2012

Wind Chill Advisory 4, NWS Melbourne, FL

December 29, 2012Lake County, Volusia County, Florida

NWS Melbourne, FL issued this wind chill advisory at Dec 29, 2012, 3:24 PM EST for Lake County, Volusia County, Florida. It took effect at Dec 30, 2012, 3:00 AM EST. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Dec 29, 2012, 3:24 PM EST (20:24 UTC)
In effect from
Dec 30, 2012, 3:00 AM EST
Expired
Dec 30, 2012, 9:00 AM EST
In force
6 hr
Issued by
NWS Melbourne, FL

Counties Lake County, FL, Volusia County, FL

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 8.4 hours before the alert went out and 103 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, Cape Canaveral, FL at 12:00Z on 2012-12-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 139 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 12:00Z on 2012-12-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 248 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
139 J/kg
Mixed-layer CIN
-126 J/kg
Mixed-layer LCL
982 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
248 m²/s²
0-3 km storm-relative helicity
299 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

262 
WWUS42 KMLB 292024
WSWMLB

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MELBOURNE FL
324 PM EST SAT DEC 29 2012

FLZ041-044-141-144-301400-
/O.NEW.KMLB.WC.Y.0004.121230T0800Z-121230T1400Z/
INLAND VOLUSIA-NORTHERN LAKE-COASTAL VOLUSIA-SOUTHERN LAKE-
INCLUDING THE CITIES OF...DE LAND...LEESBURG...DAYTONA BEACH...
CLERMONT
324 PM EST SAT DEC 29 2012

...WIND CHILL ADVISORY IN EFFECT FROM 3 AM TO 9 AM EST SUNDAY...

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A WIND CHILL
ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 9 AM EST SUNDAY. 

* WIND CHILL VALUES...NORTHWEST WINDS UP TO 10 TO 15 MPH WILL
  COMBINE WITH COLDER TEMPERATURES TO PRODUCE WIND CHILL VALUES
  NEAR TO JUST BELOW FREEZING LATE TONIGHT THROUGH EARLY SUNDAY 
  MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT COLD AIR AND STRONG WINDS WILL
COMBINE TO GENERATE LOW WIND CHILLS. IF YOU MUST VENTURE
OUTDOORS...DRESS WARMLY IN LAYERS AND MAKE SURE YOU WEAR A HAT
AND GLOVES.

&&

$$

WEITLICH
1 follow-up statement
664 
WWUS42 KMLB 301350
WSWMLB

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MELBOURNE FL
850 AM EST SUN DEC 30 2012


FLZ041-044-141-144-301500-
/O.EXP.KMLB.WC.Y.0004.000000T0000Z-121230T1400Z/
INLAND VOLUSIA-NORTHERN LAKE-COASTAL VOLUSIA-SOUTHERN LAKE-
INCLUDING THE CITIES OF...DE LAND...LEESBURG...DAYTONA BEACH...
CLERMONT
850 AM EST SUN DEC 30 2012

...WIND CHILL ADVISORY WILL EXPIRE AT 9 AM EST THIS MORNING...

WHILE NORTHERLY WINDS WILL STILL REMAIN AROUND 10 TO 15 MPH...
TEMPERATURES WILL CONTINUE TO INCREASE QUICKLY THIS MORNING WITH
WIND CHILL VALUES RISING ABOVE 35 DEGREES. THEREFORE THE WIND
CHILL ADVISORY WILL BE ALLOWED TO EXPIRE.

$$

WEITLICH

Nearby

Wind Chill Advisories in Florida, 2012Every wind chill 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.