Alert archive / Florida / Freeze Warnings in 2007

Freeze Warning 1, NWS Tampa Bay, FL

January 29, 20076 counties in Florida

NWS Tampa Bay, FL issued this freeze warning at Jan 29, 2007, 4:12 AM EST for 6 counties in Florida. It took effect at Jan 30, 2007, 12:00 AM EST. It was in force for 9 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 29, 2007, 4:12 AM EST (09:12 UTC)
In effect from
Jan 30, 2007, 12:00 AM EST
Expired
Jan 30, 2007, 9:00 AM EST
In force
9 hr
Issued by
NWS Tampa Bay, FL

Counties DeSoto County, FL, Hardee County, FL, Highlands County, FL, Pinellas County, FL, Polk County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 49 km from the middle of the area, began a volume at 09:15 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 00:00Z, 9.2 hours before the alert went out and 49 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 00:00Z on 2007-01-29Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 00:00Z on 2007-01-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -75 square meters per square second.19395878Sfc1 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
840 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
-75 m²/s²
0-3 km storm-relative helicity
-1 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 Tampa Bay, FL wrote its last area forecast discussion before this freeze warning went out at Jan 29, 3:55 AM EST, 17 minutes earlier.

Area forecast discussion, Jan 29, 3:55 AM EST, 17 minutes before
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Hazardous weather outlook, Jan 28, 5:38 AM EST, 22 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
538 AM EST SUN JAN 28 2007

FLZ039-042-043-048-281645-
LEVY-CITRUS-SUMTER-HERNANDO-
538 AM EST SUN JAN 28 2007

..COLDER TEMPERATURES MONDAY MORNING WITH A FREEZE LIKELY
TUESDAY MORNING...

...HAZARDOUS BOATING CONDITIONS TODAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
FLORIDA.

.DAY ONE...TODAY AND TONIGHT
GUSTY WEST WINDS WILL CONTINUE THROUGH MID MORNING BEFORE
BECOMING NORTHWEST AND DIMINISHING DURING THE AFTERNOON. NEAR THE
COAST AND OVER THE GULF. SEAS WILL BUILD TODAY TO 8 FEET BEFORE
SLOWLY SUBSIDING DURING THE AFTERNOON AND EVENING.

STRONG HIGH PRESSURE WILL MOVE TOWARD THE FLORIDA PENINSULA TODAY...
AND BECOME REINFORCED WITH EVEN COLDER AIR MONDAY NIGHT INTO
EARLY TUESDAY. EARLY MONDAY...THE COMBINATION OF TEMPERATURES IN
THE LOW TO MID 30S WITH NORTH WINDS AT 5 MPH WILL PRODUCE WIND
CHILL VALUES BETWEEN 25 AND 30.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
ON TUESDAY...THE HEART OF THE COLD AIR WILL REACH THE NATURE
COAST. CURRENT INDICATIONS SUGGEST A WIDESPREAD FREEZE BY TUESDAY
MORNING WITH TEMPERATURES FALLING TO BETWEEN 25 AND 30.
HOWEVER...ABUNDANT HIGH CLOUDS MAY CAP OUTGOING RADIATION AND KEEP
READINGS FROM DROPPING MUCH BELOW FREEZING.

.SPOTTER INFORMATION STATEMENT...NO ACTIVATION REQUIRED.

FLZ049>052-055>057-060-061-281645-
PASCO-PINELLAS-HILLSBOROUGH-POLK-MANATEE-HARDEE-HIGHLANDS-
SARASOTA-DE SOTO-
538 AM EST SUN JAN 28 2007

...ROUGH AND DANGEROUS SURF WITH RIP CURRENTS TODAY AT THE GULF BEACHES...
...COLDER TEMPERATURES MONDAY MORNING WITH A POSSIBLE FREEZE
INLAND TUESDAY MORNING...
...HAZARDOUS BOATING CONDITIONS TODAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
FLORIDA.

.DAY ONE...TODAY AND TONIGHT

GUSTY WEST WINDS WILL CONTINUE THROUGH MID MORNING BEFORE
BECOMING NORTHWEST AND DIMINISHING DURING THE AFTERNOON. SEAS WILL
BUILD TO 8 FEET THROUGH LATE MORNING OR EARLY AFTERNOON AND SLOWLY
SUBSIDING DURING THE AFTERNOON AND EVENING.

STRONG HIGH PRESSURE WILL MOVE TOWARD THE FLORIDA PENINSULA TODAY...
AND BECOME REINFORCED WITH EVEN COLDER AIR MONDAY NIGHT INTO
EARLY TUESDAY. EARLY MONDAY...THE COMBINATION OF TEMPERATURES IN
THE UPPER 30S TO LOWER 40S WITH NORTH WINDS AT 10 MPH WILL PRODUCE
WIND CHILL VALUES BETWEEN 30 AND 35.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

ON TUESDAY...THE HEART OF THE COLD AIR WILL REACH THE TAMPA BAY
AND SARASOTA BRADENTON AREA. CURRENT INDICATIONS SUGGEST A
POSSIBLE FREEZE BY TUESDAY MORNING WITH TEMPERATURES FALLING TO OR
JUST BELOW 32 FOR SEVERAL HOURS OVER RURAL...SHELTERED...AND
PREFERRED SUBURBAN LOCATIONS. HOWEVER...ABUNDANT HIGH CLOUDS MAY
CAP OUTGOING RADIATION AND KEEP READINGS FROM DROPPING AS LOW AS
FORECAST.

.SPOTTER INFORMATION STATEMENT...NO ACTIVATION REQUIRED

FLZ062-065-281645-
CHARLOTTE-LEE-
538 AM EST SUN JAN 28 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST
FLORIDA.

...ROUGH AND DANGEROUS SURF WITH RIP CURRENTS BY DAYBREAK AT THE GULF BEACHES...
...COLDER TEMPERATURES MONDAY AND TUESDAY MORNING WITH LOW WIND CHILL...
...HAZARDOUSOUS BOATING CONDITIONS LATER TONIGHT AND EARLY SUNDAY...

.DAY ONE...TODAY AND TONIGHT

GUSTY WEST WINDS WILL CONTINUE THROUGH MID MORNING BEFORE
BECOMING NORTHWEST AND DIMINISHING DURING THE AFTERNOON. SEAS WILL
BUILD TO 8 FEET THROUGH LATE MORNING OR EARLY AFTERNOON IN THE
WATERS BEYOND 20 NM OUT...SLOWLY SUBSIDING OVERNIGHT.

STRONG HIGH PRESSURE WILL MOVE TOWARD THE FLORIDA PENINSULA TODAY...
AND BECOME REINFORCED WITH EVEN COLDER AIR MONDAY NIGHT INTO
EARLY TUESDAY. EARLY MONDAY...THE COMBINATION OF TEMPERATURES
BETWEEN 40 AND 45 WITH NORTH WINDS AT 10 TO 15 MPH WILL PRODUCE
WIND CHILL VALUES BETWEEN 35 AND 40.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

ON TUESDAY...THE HEART OF THE COLD AIR WILL REACH SOUTHWEST
FLORIDA. CURRENT INDICATIONS SUGGEST TEMPERATURES FALLING TO
BETWEEN 35 AND 40 WITH WIND CHILL VALUES AS LOW AS 30 IN A FEW
SPOTS.

.SPOTTER INFORMATION STATEMENT...NO ACTIVATION REQUIRED.

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 29, 1:50 PM ESTRed Flag WarningTBWDeSoto, Hardee, Highlands, Polk, Sumter28 hr

Nearby

Freeze Warnings in Florida, 2007Every freeze warning in 2007

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.