Alert archive / Florida / Freeze Warnings in 2009

Freeze Warning 1, NWS Melbourne, FL

January 16, 2009Lake County, Volusia County, Florida

NWS Melbourne, FL issued this freeze warning at Jan 16, 2009, 1:36 PM EST for Lake County, Volusia County, Florida. It took effect at Jan 17, 2009, 4:00 AM EST. It was in force for 4 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 16, 2009, 1:36 PM EST (18:36 UTC)
In effect from: Jan 17, 2009, 4:00 AM EST
Expired: Jan 17, 2009, 8:00 AM EST
In force: 4 hr
Issued by: NWS Melbourne, FL

Counties Lake County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 117 km from the middle of the area, began a volume at 18:37 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 6.6 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 951 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Melbourne, FL wrote its last area forecast discussion before this freeze warning went out at Jan 16, 10:20 AM EST, 3 hours 16 minutes earlier.

Area forecast discussion, Jan 16, 10:20 AM EST, 3 hours 16 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MELBOURNE FL
1020 AM EST FRI JAN 16 2009

.DISCUSSION...

TODAY...NORTH WINDS BRINGING MUCH BELOW NORMAL TEMPS WITH HIGHS
RANGING FROM MID 50S FAR NORTH TO MID 60S FAR SOUTH. HAVE INCREASED
WINDS ALONG THE COAST AS FLOW TURNS SLIGHTLY ONSHORE. OVERALL HIGH
CLOUDS WILL BE THINNING TODAY SO HAVE REDUCED SKY COVER ESP NORTH
BUT SCT (OCNLY BKN?) MARINE STRATOCU SHOULD IMPINGE ON THE COAST ESP
SOUTH OF THE CAPE. SCATTERED SHOWERS JUST OFFSHORE MARTIN COUNTY
SHOULD STAY MOSTLY OFFSHORE BUT COULD SEE SOME SPRINKLES OR LIGHT
SHOWER BRUSH EXTREME SE MARTIN COUNTY.

&&

.AVIATION...VFR WITH BKN TO OVC AOA FL200 GRADUALLY THINNING AND
CLEARING OUT FROM NORTH-SOUTH OVERNIGHT. EXPECT SOME MARINE STRATOCU
NEAR THE COAST TODAY...ESP SOUTH OF THE CAPE.

&&

.MARINE...WINDS HAVE INCREASED TO ADVISORY CRITERIA. SEAS ARE
BUILDING AND WILL REACH SCA LEVELS LATER TODAY THROUGH TONIGHT...
WITH SEAS OVER THE GULF STREAM BECOMING FULLY ARISEN BY TONIGHT. NO
CHGS TO THE ONGOING SCA.

&&

.FIRE WEATHER...SFC OBS SHOW VERY LOW DEWPOINT AIR IS SPREADING
SOUTHWARD INTO CENTRAL FLORIDA. DEWPOINTS IN THE TEENS ARE POISED
JUST NORTH OF FA. DRIER NAM MOS OUTPERFORMING GFS MOS SO FAR THIS
MORNING. DESPITE MUCH BELOW NORMAL TEMPS...EXTENT OF DRYING IS
SIGNIFICANT ENOUGH THAT THINK AT LEAST LAKE COUNTY WILL SEE LONG
DURATION OF CRITICAL RH AND POSSIBLY ADJACENT PORTION OF WESTERN
ORANGE COUNTY. SO WILL BE RAISING RED FLAG WARNING.

&&

.PRELIMINARY POINT TEMPS/POPS...
DAB  55  36  58  36 /  10  10  10  10
MCO  60  38  63  42 /  10  10  10  10
MLB  62  43  64  44 /  10  10  10  10
VRB  65  46  65  47 /  10  10  10  10

&&

.MLB WATCHES/WARNINGS/ADVISORIES...
FL...RED FLAG WARNING NOON UNTIL 6 PM THIS AFTERNOON FOR LAKE
     COUNTY.

     FREEZE WATCH FROM LATE TONIGHT THROUGH SATURDAY MORNING FOR
     INLAND VOLUSIA-NORTHERN LAKE-SOUTHERN LAKE.

AM...SMALL CRAFT ADVISORY UNTIL 4 PM EST SATURDAY FOR COASTAL WATERS
     FROM FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE OUT 20 NM-
     COASTAL WATERS FROM SEBASTIAN INLET TO JUPITER INLET OUT 20
     NM-COASTAL WATERS FROM VOLUSIA BREVARD COUNTY LINE TO
     SEBASTIAN INLET OUT 20 NM.

     SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS FROM 4 PM SATURDAY TO 1
     AM EST SUNDAY FOR COASTAL WATERS FROM VOLUSIA BREVARD
     COUNTY LINE TO SEBASTIAN INLET OUT 20 NM.

     SMALL CRAFT ADVISORY UNTIL 4 PM EST SATURDAY FOR WATERS FROM
     FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE 20 TO 60 NM
     OFFSHORE-WATERS FROM SEBASTIAN INLET TO JUPITER INLET 20 TO
     60 NM OFFSHORE-WATERS FROM VOLUSIA BREVARD COUNTY LINE TO
     SEBASTIAN INLET 20 TO 60 NM OFFSHORE.

     SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS FROM 4 PM SATURDAY TO 7
     AM EST SUNDAY FOR COASTAL WATERS FROM SEBASTIAN INLET TO
     JUPITER INLET OUT 20 NM-WATERS FROM FLAGLER BEACH TO
     VOLUSIA BREVARD COUNTY LINE 20 TO 60 NM OFFSHORE-WATERS
     FROM SEBASTIAN INLET TO JUPITER INLET 20 TO 60 NM OFFSHORE-
     WATERS FROM VOLUSIA BREVARD COUNTY LINE TO SEBASTIAN INLET
     20 TO 60 NM OFFSHORE.

&&

KELLY

Hazardous weather outlook, Jan 16, 10:52 AM EST, 2 hours 44 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 16, 10:34 AM EST	Red Flag Warning	MLB	Lake	7 hr

Nearby

Freeze Warnings in Florida, 2009 Every freeze warning in 2009

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.