Alert archive / Florida / Freeze Warnings in 2008

Freeze Warning 4, NWS Jacksonville, FL

January 19, 2008Baker County, Suwannee County, Florida

NWS Jacksonville, FL issued this freeze warning at Jan 19, 2008, 2:24 PM EST for Baker County, Suwannee County, Florida. It took effect at Jan 20, 2008, 5:00 AM EST. It was in force for . 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 19, 2008, 2:24 PM EST (19:24 UTC)
In effect from: Jan 20, 2008, 5:00 AM EST
Expired: Jan 20, 2008, 3:16 AM EST
In force
Issued by: NWS Jacksonville, FL

Counties Baker County, FL, Suwannee County, FL

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 7.4 hours before the alert went out and 94 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: 457 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: -134 m²/s²
0-3 km storm-relative helicity: 179 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 Jacksonville, FL wrote its last area forecast discussion before this freeze warning went out at Jan 19, 9:30 AM EST, 4 hours 54 minutes earlier.

Area forecast discussion, Jan 19, 9:30 AM EST, 4 hours 54 minutes before

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Hazardous weather outlook, Jan 19, 12:25 PM EST, 1 hour 59 minutes before

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In the hours before

Special weather statement, Jan 19, 12:33 PM EST, 1 hour 51 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1233 PM EST SAT JAN 19 2008

GAZ132>136-149>153-162>165-192330-
APPLING-ATKINSON-BACON-BRANTLEY-CAMDEN (INLAND)-CHARLTON-CLINCH-
COFFEE-ECHOLS-GLYNN (INLAND)-JEFF DAVIS-PIERCE-WARE-WAYNE-
1233 PM EST SAT JAN 19 2008

...PATCHES OF ICE POSSIBLE ON SOUTHEAST GEORGIA BRIDGES AND
OVERPASSES LATE TONIGHT AND EARLY SUNDAY MORNING...

DUE TO RECENT RAINFALL TODAY AND EXPECTED COLDER TEMPERATURES
TONIGHT...PATCHES OF ICE MAY FORM ON SOUTHEAST GEORGIA BRIDGES AND
OVERPASSES AFTER MIDNIGHT TONIGHT. THIS ICE WILL BE NEARLY
INVISIBLE TO MOTORISTS AND IS OFTEN REFERRED TO AS BLACK ICE.
MOTORISTS SHOULD SLOW DOWN BEFORE CROSSING BRIDGES AND OVERPASSES
IN SOUTHEAST GEORGIA TONIGHT. ALLOW PLENTY OF ROOM TO BRAKE GENTLY
IF NEEDED. STAY TUNED TO NOAA WEATHER RADIO FOR UPDATED STATEMENTS
AND SHORT TERM FORECASTS.

CARROLL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 19, 2:05 PM EST	Freeze Watch	JAX	Baker, Bradford, Gilchrist, Suwannee, Union	24 hr
Jan 19, 2:34 PM EST	Red Flag Warning	JAX	Baker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more	28 hr
Jan 19, 4:35 PM EST	Severe Thunderstorm Warning	JAX	Alachua, Marion, Putnam	25 min
Jan 19, 4:59 PM EST	Severe Thunderstorm Warning	JAX	Clay, Flagler, Marion, Putnam, Saint Johns	31 min
Jan 19, 5:11 PM EST	Special Marine Warning	JAX		94 min
Jan 19, 5:21 PM EST	Tornado Warning	JAX	Clay, Putnam, Saint Johns	24 min
Jan 19, 5:36 PM EST	Severe Thunderstorm Warning	JAX	Flagler, Putnam, Saint Johns	24 min
Jan 19, 6:42 PM EST	Special Marine Warning	JAX		63 min

Nearby

Freeze Warnings in Florida, 2008 Every freeze warning in 2008

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.