Alert archive / Florida / Red Flag Warnings in 2007

Red Flag Warning 14, NWS Tampa Bay, FL

February 15, 2007Polk County, Sumter County, Florida

NWS Tampa Bay, FL issued this red flag warning at Feb 15, 2007, 2:50 PM EST for Polk County, Sumter County, Florida. It took effect at Feb 16, 2007, 5:19 AM EST. It was in force for 14 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
Feb 15, 2007, 2:50 PM EST (19:50 UTC)
In effect from
Feb 16, 2007, 5:19 AM EST
Expired
Feb 16, 2007, 7:00 PM EST
In force
14 hr
Issued by
NWS Tampa Bay, FL

Counties Polk County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 85 km from the middle of the area, began a volume at 19:53 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 12:00Z, 7.8 hours before the alert went out and 86 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 12:00Z on 2007-02-15Temperature 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 12:00Z on 2007-02-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -39 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
929 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
-39 m²/s²
0-3 km storm-relative helicity
214 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.

000 
WWUS82 KTBW 151950
RFWTBW

RED FLAG WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
250 PM EST THU FEB 15 2007

...RED FLAG WARNING IS IN EFFECT FOR THE NATURE COAST AND INTERIOR
WEST CENTRAL FLORIDA FOR LATE FRIDAY MORNING INTO FRIDAY EVENING...
...THE FIRE WEATHER WATCH REMAINS IN EFFECT FROM LATE FRIDAY
MORNING INTO FRIDAY EVENING FOR INLAND PORTIONS OF SOUTH CENTRAL
AND SOUTHWEST FLORIDA...

.HIGH PRESSURE WILL BUILD OVER THE REGION THROUGH SATURDAY...
BRINGING A COLD AND DRY AIRMASS TO THE AREA.

FLZ039-042-043-048-049-052-161100-
/O.UPG.KTBW.FW.A.0012.070216T1600Z-070217T0000Z/
/O.NEW.KTBW.FW.W.0014.070216T1600Z-070217T0000Z/
LEVY-CITRUS-SUMTER-HERNANDO-PASCO-POLK-
250 PM EST THU FEB 15 2007

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM EST FRIDAY...

THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA - RUSKIN FL HAS
ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 11 AM TO 7 PM
EST FRIDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. 

HIGH PRESSURE WILL BUILD OVER THE REGION THROUGH SATURDAY. 
A COLD AND DRY AIRMASS WILL ACCOMPANY THIS HIGH WITH RELATIVE
HUMIDITY VALUES EXPECTED TO FALL BELOW 35 PERCENT ALONG WITH
SUSTAINED TWENTY FOOT WINDS AROUND 15 MPH FRIDAY AFTERNOON. 
THESE WILL COMBINE TO CREATE DANGEROUS FIRE WEATHER CONDITIONS
ACROSS INLAND PORTIONS OF WEST CENTRAL FLORIDA.

A RED FLAG WARNING IS ISSUED WHEN VERY FAVORABLE CONDITIONS FOR
THE SPREAD OF WILDFIRE ARE OCCURRING NOW...OR WILL OCCUR WITHIN
24 HOURS.

$$

FLZ051-055>057-060>062-065-161100-
/O.CON.KTBW.FW.A.0012.070216T1600Z-070217T0000Z/
HILLSBOROUGH-MANATEE-HARDEE-HIGHLANDS-SARASOTA-DE SOTO-CHARLOTTE-
LEE-
250 PM EST THU FEB 15 2007

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY MORNING
THROUGH FRIDAY EVENING...

A FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY MORNING
THROUGH FRIDAY EVENING. 

HIGH PRESSURE WILL BUILD OVER THE REGION THROUGH SATURDAY. 
A COLD AND DRY AIRMASS WILL ACCOMPANY THIS HIGH WITH RELATIVE
HUMIDITIES WELL AWAY FROM THE COAST EXPECTED TO FALL INTO THE
LOWER AND MIDDLE 30S ALONG WITH SUSTAINED TWENTY FOOT WINDS 
AROUND 15 MPH FRIDAY AFTERNOON. THESE MAY COMBINE TO CREATE
DANGEROUS FIRE WEATHER CONDITIONS ACROSS PORTIONS OF INTERIOR 
WEST CENTRAL AND SOUTHWEST FLORIDA.

PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THE
FIELD.

$$

PRC
3 follow-up statements
000 
WWUS82 KTBW 161019
RFWTBW

RED FLAG WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
519 AM EST FRI FEB 16 2007

..RED FLAG WARNING IS IN EFFECT FOR THE NATURE COAST AND INTERIOR
WEST CENTRAL FLORIDA FOR LATE FRIDAY MORNING INTO FRIDAY EVENING..

..A FIRE WEATHER WATCH IS IN EFFECT FROM LATE SATURDAY MORNING
INTO SATURDAY EVENING FOR INLAND PORTIONS OF SOUTH CENTRAL AND
SOUTHWEST FLORIDA...

.HIGH PRESSURE WILL BUILD OVER THE REGION THROUGH SATURDAY...
BRINGING A COLD AND DRY AIRMASS TO THE AREA.

FLZ056-057-061-062-065-162230-
/O.CAN.KTBW.FW.A.0012.070216T1600Z-070217T0000Z/
/O.NEW.KTBW.FW.A.0013.070217T1500Z-070218T0000Z/
HARDEE-HIGHLANDS-DE SOTO-CHARLOTTE-LEE-
519 AM EST FRI FEB 16 2007

...FIRE WEATHER WATCH IS CANCELLED...
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY EVENING...

THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA - RUSKIN FL HAS
ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SATURDAY
MORNING THROUGH SATURDAY EVENING. THE FIRE WEATHER WATCH FOR THIS
AFTERNOON HAS BEEN CANCELED.

STRONG COLD AIR ADVECTION ON SATURDAY MORNING WILL BRING DECREASING
RELATIVE HUMIDITY VALUES AND INTO CRITICAL VALUES BY THE AFTERNOON
HOURS. THIS MAY COMBINE WITH WINDS IN THE 10 TO 15 MPH RANGE TO
CREATE HAZARDOUS CONDITIONS FOR FIRE OPERATIONS.

PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THE
FIELD.

$$

FLZ055-060-161130-
/O.CAN.KTBW.FW.A.0012.070216T1600Z-070217T0000Z/
MANATEE-SARASOTA-
519 AM EST FRI FEB 16 2007

...FIRE WEATHER WATCH IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA - RUSKIN FL HAS
CANCELED THE FIRE WEATHER WATCH. 

RELATIVE HUMIDITY VALUES TODAY ARE EXPECTED TO REMAIN ABOVE CRITICAL
VALUES WITH SOME INTERIOR AREAS EXPERIENCING 1 TO 3 HOURS OF
HUMIDITIES DROPPING BELOW 35 PERCENT.


$$

FLZ051-162230-
/O.UPG.KTBW.FW.A.0012.070216T1600Z-070217T0000Z/
/O.NEW.KTBW.FW.A.0013.070217T1500Z-070218T0000Z/
/O.EXB.KTBW.FW.W.0014.070216T1500Z-070217T0000Z/
HILLSBOROUGH-
519 AM EST FRI FEB 16 2007

...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 7 PM EST
THIS EVENING...
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY EVENING...

THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA - RUSKIN FL HAS
ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 10 AM THIS
MORNING TO 7 PM EST THIS EVENING. A FIRE WEATHER WATCH HAS ALSO
BEEN ISSUED. THIS FIRE WEATHER WATCH IS IN EFFECT FROM SATURDAY
MORNING THROUGH SATURDAY EVENING. THE FIRE WEATHER WATCH IS NO
LONGER IN EFFECT. 

COLD AIR ADVECTION OVER THE AREA WILL BRING DURATIONS OF LOW
RELATIVE HUMIDITY VALUES OF BORDERLINE 4 HOURS OVER THE EASTERN
HALF OF HILLSBOROUGH COUNTY...WHICH MAY COMBINE WITH WINDS IN THE
10 TO 15 MPH RANGE TO CREATE HAZARDOUS CONDITIONS FOR FIRE WEATHER
OPERATIONS. 

A RED FLAG WARNING IS ISSUED WHEN VERY FAVORABLE CONDITIONS FOR
THE SPREAD OF WILDFIRE ARE OCCURRING NOW...OR WILL OCCUR WITHIN
24 HOURS.

PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THE
FIELD.

$$

FLZ039-042-043-048-049-052-162230-
/O.NEW.KTBW.FW.A.0013.070217T1500Z-070218T0000Z/
/O.EXT.KTBW.FW.W.0014.070216T1500Z-070217T0000Z/
LEVY-CITRUS-SUMTER-HERNANDO-PASCO-POLK-
519 AM EST FRI FEB 16 2007

...RED FLAG WARNING NOW IN EFFECT FROM 10 AM THIS MORNING TO 7 PM
EST THIS EVENING...
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY EVENING...

THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA - RUSKIN FL HAS
ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SATURDAY
MORNING THROUGH SATURDAY EVENING. THE RED FLAG WARNING IS NOW IN
EFFECT FROM 10 AM THIS MORNING TO 7 PM EST THIS EVENING. 

HIGH PRESSURE WILL BUILD OVER THE REGION THROUGH SATURDAY. A COLD
AND DRY AIRMASS WILL ACCOMPANY THIS HIGH WITH RELATIVE HUMIDITY
VALUES EXPECTED TO FALL BELOW 35 PERCENT ALONG WITH SUSTAINED
TWENTY FOOT WINDS AROUND 15 MPH FRIDAY AFTERNOON. THESE WILL
COMBINE TO CREATE DANGEROUS FIRE WEATHER CONDITIONS ACROSS INLAND
PORTIONS OF WEST CENTRAL FLORIDA.

A FIRE WEATHER WATCH HAS BEEN ISSUED FOR SATURDAY AFTERNOON AS THE
DRY AND COLD AIRMASS SHOULD REMAIN OVER THE AREA AND KEEPING
RELATIVE HUMIDITY VALUES BELOW CRITICAL LEVELS. 

A RED FLAG WARNING IS ISSUED WHEN VERY FAVORABLE CONDITIONS FOR
THE SPREAD OF WILDFIRE ARE OCCURRING NOW...OR WILL OCCUR WITHIN
24 HOURS.

PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THE
FIELD.

$$
000 
WWUS82 KTBW 162240
RFWTBW

RED FLAG WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
540 PM EST FRI FEB 16 2007

...COOL AND DRY CONDITIONS CONTINUING FOR MANY LOCATIONS THROUGH
THE WEEKEND...

.HIGH PRESSURE WILL BUILD OVER THE REGION THROUGH
SATURDAY...MAINTAINING DRY TO VERY DRY CONDITIONS. A COLD FRONT
WILL SWEEP ACROSS THE STATE SATURDAY NIGHT AND EARLY SUNDAY...AND
BRISK AND DRY WEATHER MAY PRODUCE CRITICAL RELATIVE HUMIDITY
ACROSS INTERIOR WEST CENTRAL FLORIDA AGAIN ON SUNDAY.

FLZ048-049-051-052-171230-
/O.CAN.KTBW.FW.W.0014.000000T0000Z-070217T0000Z/
/O.CON.KTBW.FW.A.0013.070217T1500Z-070218T0000Z/
HERNANDO-PASCO-HILLSBOROUGH-POLK-
540 PM EST FRI FEB 16 2007

...RED FLAG WARNING IS CANCELLED...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING...

THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA - RUSKIN FL HAS
CANCELLED THE RED FLAG WARNING. A FIRE WEATHER WATCH REMAINS IN
EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING. 

NORTHWEST WINDS OFF THE GULF COMBINED WITH COOLING AIR
TEMPERATURES HAVE ALLOWED HUMIDITY TO RISE ABOVE 40 PERCENT LATE
THIS AFTERNOON. HUMIDITY WILL CONTINUE TO RISE WITH THE APPROACH
OF SUNSET.

A FIRE WEATHER WATCH CONTINUES FOR SATURDAY AFTERNOON. VERY DRY
AIR WILL GRADUALLY MODERATE AS WINDS BACK TO WEST AND SOUTHWEST BY
AFTERNOON. TEMPERATURES WILL BE A LITTLE WARMER...REACHING THE
LOWER 60S. THE BEST CHANCE FOR LONG DURATION RELATIVE HUMIDITY
BELOW 35 PERCENT WILL BE ACROSS AREAS WELL AWAY FROM THE
COAST...WHERE THE SURFACE DEW POINTS AND THUS RELATIVE HUMIDITY
WILL BE LAST TO RISE.

WARNINGS WILL LIKELY BE RAISED FOR SOME AREAS EARLY SATURDAY MORNING.

PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THE
FIELD.

$$

FLZ039-042-043-170000-
/O.CON.KTBW.FW.W.0014.000000T0000Z-070217T0000Z/
/O.CON.KTBW.FW.A.0013.070217T1500Z-070218T0000Z/
LEVY-CITRUS-SUMTER-
540 PM EST FRI FEB 16 2007

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING.
A FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING. 

VERY DRY AIR CONTINUES TO POUR INTO CENTRAL AND NORTHERN
LEVY...NORTHEAST CITRUS...AND NORTHERN SUMTER COUNTY LATE THIS
AFTERNOON. HUMIDITY REMAINS NEAR OR JUST BELOW 35 PERCENT EVEN
THOUGH TEMPERATURES ARE FALLING WITH THE APPROACH OF SUNSET.
HUMIDITY SHOULD RISE ABOVE 35 PERCENT BY 7 PM AS TEMPERATURES
CONTINUE TO COOL.

A FIRE WEATHER WATCH REMAINS IN EFFECT SATURDAY AFTERNOON. VERY DRY
AIR WILL GRADUALLY MODERATE AS WINDS BACK TO WEST AND SOUTHWEST BY
AFTERNOON. TEMPERATURES WILL BE A LITTLE WARMER...REACHING THE
UPPER 50S TO AROUND 60 BY MID AFTERNOON. THE BEST CHANCE FOR LONG
DURATIONS OF RELATIVE HUMIDITY BELOW 35 PERCENT WILL BE ACROSS AREAS WELL
AWAY FROM THE COAST...WHERE THE SURFACE DEW POINTS AND THUS
RELATIVE HUMIDITY WILL BE LAST TO RISE. ADDITIONAL RED FLAG
WARNINGS WILL LIKELY BE ISSUED FOR SOME AREAS EARLY SATURDAY MORNING.

A RED FLAG WARNING IS ISSUED WHEN VERY FAVORABLE CONDITIONS FOR
THE SPREAD OF WILDFIRE ARE OCCURRING NOW...OR WILL OCCUR WITHIN 24
HOURS.

PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THE
FIELD.

$$

FLZ056-057-061-062-065-171230-
/O.CON.KTBW.FW.A.0013.070217T1500Z-070218T0000Z/
HARDEE-HIGHLANDS-DE SOTO-CHARLOTTE-LEE-
540 PM EST FRI FEB 16 2007

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING...

A FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING. VERY DRY AIR WILL GRADUALLY MODERATE AS
WINDS BACK TO WEST AND SOUTHWEST BY AFTERNOON. TEMPERATURES WILL
BE A LITTLE WARMER...REACHING THE MID 60S BY MID AFTERNOON. THE BEST
CHANCE FOR LONG DURATIONS OF RELATIVE HUMIDITY BELOW 35 PERCENT
WILL BE ACROSS AREAS WELL AWAY FROM THE COAST...WHERE THE SURFACE
DEW POINTS AND THUS RELATIVE HUMIDITY WILL BE LAST TO RISE.
RED FLAG WARNINGS WILL LIKELY BE ISSUED FOR SOME AREAS EARLY
SATURDAY MORNING.

PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THE
FIELD.

$$

BSG
000 
WWUS82 KTBW 170018
RFWTBW

RED FLAG WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
718 PM EST FRI FEB 16 2007

...COOL AND DRY CONDITIONS CONTINUING FOR MANY LOCATIONS THROUGH
THE WEEKEND...

.HIGH PRESSURE WILL BUILD OVER THE REGION THROUGH SATURDAY...
MAINTAINING DRY TO VERY DRY CONDITIONS. A COLD FRONT WILL SWEEP
ACROSS THE STATE SATURDAY NIGHT AND EARLY SUNDAY...AND BRISK AND
DRY WEATHER MAY PRODUCE CRITICAL RELATIVE HUMIDITY ACROSS
INTERIOR WEST CENTRAL FLORIDA AGAIN ON SUNDAY.

FLZ039-042-043-171230-
/O.EXP.KTBW.FW.W.0014.000000T0000Z-070217T0000Z/
/O.CON.KTBW.FW.A.0013.070217T1500Z-070218T0000Z/
LEVY-CITRUS-SUMTER-
718 PM EST FRI FEB 16 2007

...RED FLAG WARNING HAS EXPIRED...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING...

THE RED FLAG WARNING IS NO LONGER IN EFFECT. A FIRE WEATHER WATCH
REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING.

VERY DRY AIR WILL GRADUALLY MODERATE AS WINDS BACK TO WEST AND
SOUTHWEST BY AFTERNOON. TEMPERATURES WILL BE A LITTLE WARMER...
REACHING THE UPPER 50S TO AROUND 60 BY MID AFTERNOON. THE BEST
CHANCE FOR LONG DURATIONS OF RELATIVE HUMIDITY BELOW 35 PERCENT
WILL BE ACROSS AREAS WELL AWAY FROM THE COAST...WHERE THE SURFACE
DEW POINTS AND THUS RELATIVE HUMIDITY WILL BE LAST TO RISE.
ADDITIONAL RED FLAG WARNINGS WILL LIKELY BE ISSUED FOR SOME AREAS
EARLY SATURDAY MORNING.

PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THE
FIELD.

$$

FLZ048-049-051-052-056-057-061-062-065-171230-
/O.CON.KTBW.FW.A.0013.070217T1500Z-070218T0000Z/
HERNANDO-PASCO-HILLSBOROUGH-POLK-HARDEE-HIGHLANDS-DE SOTO-
CHARLOTTE-LEE-
718 PM EST FRI FEB 16 2007

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING...

A FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SATURDAY EVENING. 

VERY DRY AIR WILL GRADUALLY MODERATE AS WINDS BACK TO WEST AND
SOUTHWEST BY AFTERNOON. TEMPERATURES WILL BE A LITTLE WARMER...REACHING
THE LOWER 60S. THE BEST CHANCE FOR LONG DURATIONS OF RELATIVE
HUMIDITY BELOW 35 PERCENT WILL BE ACROSS AREAS WELL AWAY FROM THE
COAST...WHERE THE SURFACE DEW POINTS AND THUS RELATIVE HUMIDITY
WILL BE LAST TO RISE.

WARNINGS WILL LIKELY BE RAISED FOR SOME AREAS EARLY SATURDAY MORNING.

PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THE
FIELD.

$$

BSG

What forecasters said that day

The local office's own words before this red flag 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 red flag warning went out at Feb 15, 1:52 PM EST, 58 minutes earlier.

Area forecast discussion, Feb 15, 1:52 PM EST, 58 minutes before
AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
152 PM EST THU FEB 15 2007

CORRECTED TO ADD WIND CHILL ADVISORY

...SIGNIFICANT FREEZE EXPECTED ACROSS MUCH OF WEST CENTRAL FLORIDA
FRIDAY NIGHT...

.SHORT TERM (TONIGHT - SATURDAY)...THE BIG STORY IS THE UPCOMING
COLD EVENT FRIDAY NIGHT. MODEL GUIDANCE CONTINUES TO SUGGEST
FREEZING TEMPERATURES ACROSS MUCH OF THE INTERIOR...AND EVEN
INTERIOR LEE COUNTY COULD SEE AN HOUR OR TWO OF NEAR FREEZING
TEMPERATURES.

BUT FIRST...WEAK OVERRUNNING EVENT HAS BEGUN WITH LOTS OF CLOUDS
STREAMING NORTHEASTWARD ACROSS THE REGION. THE EXCEPTION IS CITRUS
AND LEVY COUNTIES...BUT CLOUDS WILL BE MOVING INTO THOSE COUNTIES
BEFORE THE DAYS END. AS EXPECTED...RAIN HAS BEEN VERY LIGHT...WITH
JUST A TRACE SO FAR AT FORT MYERS...ALTHOUGH SOUTHWEST REGIONAL HAS
PICKED UP TWO HUNDREDTHS OF AN INCH.

LATEST GFS RUN HAS CHANCE POPS FOR ALL OF OUR AREA THROUGH MIDNIGHT
TONIGHT. I WILL KEEP POPS BELOW GUIDANCE SINCE SO FAR...MOST OF THE
RAIN IS NOT REACHING THE GROUND AND CLOUDS OVER THE GULF DO NOT LOOK
ALL THAT OMINOUS. I DID EXTEND SLIGHT CHANCE OF RAIN ALL THE WAY UP
THROUGH LEVY COUNTY...BUT AGAIN...NO REAL ACCUMULATIONS EXPECTED.

STRONG HIGH PRESSURE WILL BEGIN TO PUSH THE CLOUDS AND RIGHT LAIN
OUT OF THE AREA AFTER MIDNIGHT TONIGHT...WITH COLDER AND DRIER AIR
MOVING IN BY MORNING. IN FACT...WE MAY SEE TEMPERATURES BRIEFLY
BELOW FREEZING IN LEVY AND CITRUS COUNTY TONIGHT...BUT PROBABLY NOT
FOR MORE THAN AN HOUR OR TWO. I WILL MENTION NEAR FREEZING
TEMPERATURES IN THE ZONES. ALSO...WINDS OF 5 TO 10 MPH WILL CREATE
WIND CHILL PROBLEMS FOR THE NATURE COAST AND PORTIONS OF NORTHERN
HILLSBOROUGH AND POLK COUNTIES. WE WILL ISSUE A WIND CHILL
ADVISORY FOR THOSE AREAS WITH THE AFTERNOON ZONE PACKAGE.

SKIES WILL CLEAR ON FRIDAY...BUT TEMPERATURES WILL STRUGGLE TO REACH
THE LOWER 50S NORTH TO THE MID 60S SOUTH IN CONTINUED COLD AIR
ADVECTION REGIME.

HIGH PRESSURE MOVES ACROSS THE GULF FRIDAY NIGHT...WITH MOST OF THE
FLORIDA PENINSULA UNDER LIGHT NORTHERLY FLOW AFTER MIDNIGHT. CLEAR
SKIES AND LIGHT WINDS WILL ALLOW RADIATIONAL COOLING TO MAXIMIZE
AFTER MIDNIGHT...AND TEMPERATURES WILL PLUMMET. WE ARE FORECASTING
LOW TEMPERATURES AROUND 20 DEGREES IN THE COLDEST AREAS OF THE
NATURE COAST...AND SUB-FREEZING TEMPERATURES ACROSS MOST OF THE
REMAINDER OF INTERIOR WEST CENTRAL FLORIDA. WE WILL EXTEND THE
FREEZE WATCH TO INCLUDE ALL BUT LEE COUNTY...BUT THE FAR NORTHEAST
CORNER OF LEE COUNTY COULD BRIEFLY DROP BELOW FREEZING.

TEMPERATURES WILL RECOVER TO BETWEEN 60 AND 65 AREA WIDE ON
SATURDAY.

.LONG TERM (SATURDAY NIGHT THROUGH THURSDAY)...NEXT COLD FRONT WILL
MOVE ACROSS THE REGION SATURDAY NIGHT AND EARLY SUNDAY MORNING
USHERING IN A REINFORCING SHOT OF COOL DRY AIR.  SOME CLOUDS AND A
FEW LIGHT SHOWERS WILL ACCOMPANY THE FRONT OTHERWISE SKIES WILL
CLEAR OUT BEHIND IT DURING SUNDAY AND CONTINUE MOSTLY CLEAR THROUGH
MONDAY WITH MORE BELOW NORMAL TEMPERATURES EXPECTED.  HIGH PRESSURE
WILL SLIDE ACROSS THE SOUTHEAST U.S. AND OUT INTO THE ATLANTIC BY
TUESDAY WITH A RETURN FLOW SETTING UP FOR THE MIDDLE OF NEXT WEEK
ALLOWING TEMPERATURES TO CLIMB BACK TO NEAR NORMAL.  NEXT STORM
SYSTEM AND ASSOCIATED COLD FRONT WILL APPROACH THE REGION WEDNESDAY
NIGHT AND THURSDAY BRINGING A CHANCE OF SHOWERS AND POSSIBLY A FEW
THUNDERSTORMS IF LATEST GFS IS CORRECT.  EXACT PLACEMENT AND TIMING
OF THIS SYSTEM CONTINUES TO CHANGE WITH EACH MODEL RUN SO WILL JUST
GO WITH A SLIGHT CHANCE OF SHOWERS AT THIS TIME FOR WEDNESDAY INTO
THURSDAY MORNING.

&&

.AVIATION...VFR WITH AREAS OF MVFR CEILINGS ARE EXPECTED THROUGH
TONIGHT WITH SOME LIGHT RAIN AT TIMES THAT COULD POSSIBLY CAUSE
SOME MVFR VISIBILITIES.

&&

.MARINE...NO IMMEDIATE CONCERNS FOR THE GULF WATERS AS WINDS REMAIN
AROUND 15 KNOTS. THE TROUBLE STARTS SATURDAY NIGHT AND CONTINUES
INTO SUNDAY AS THE NEXT COLD FRONT BLASTS THROUGH THE EASTERN GULF.
BOTH THE GFS AND NAM ARE FORECASTING WINDS OF 25 TO 30 KNOTS AND
WAVE WATCH GUIDANCE CONTINUES TO SHOW SEAS UP TO 12 FEET OFFSHORE.
THIS WILL MAKE FOR VERY HAZARDOUS BOATING CONDITIONS LATE IN THE
WEEKEND. THIS WILL BE A QUICK SHOT...WITH CONDITIONS IMPROVING
RAPIDLY ON MONDAY.

&&

.FIRE WEATHER...TOUGH CALL COMING UP FOR FRIDAY AS WE DEAL WITH A
COMBINATION OF WIND...DRY AIR AND NORTHWESTERLY FLOW OFF THE GULF.
THE NATURE COAST SHOULD REACH FLAG CONDITIONS AS BOTH DURATIONS AND
WINDS WILL EXCEED CRITERIA. FROM THERE...THE INTERIOR...SUCH AS
SUMTER AND POLK COUNTIES COULD SEE DURATIONS. TO THE SOUTH...THE
PICTURE IS MUCH FUZZIER AS RELATIVE HUMIDITY VALUES WILL BE
BORDERLINE. HAVE DECIDED TO LEAVE WATCH UP FROM TAMPA BAY SOUTHWARD
BUT CONVERT TO RED FLAG WARNING FOR POLK...SUMTER...PASCO COUNTIES
NORTHWARD.

A FIRE WEATHER WATCH WILL ALSO BE NEEDED FOR A PORTION OF OUR REGION
ON SATURDAY...AND WHILE WE ARE CONFIDENT WE WILL MEET CONDITIONS
ACROSS NORTHERN AND INTERIOR SECTIONS...WE ARE LESS SURE ACROSS OUR
CENTRAL AND SOUTHERN COASTAL COUNTIES. WILL WAIT ANOTHER 12 HOURS
FOR LATER MODEL GUIDANCE BEFORE MAKING A DECISION.

&&

.PRELIMINARY POINT TEMPS/POPS...
TPA  42  57  34  60 /  30   0   0   0
FMY  48  65  38  64 /  40  10   0   0
GIF  42  59  35  63 /  30   0   0   0
SRQ  46  59  37  61 /  30  10   0   0
BKV  35  54  22  60 /  20   0   0   0
SPG  46  57  42  60 /  30   0   0   0

&&

.TBW WATCHES/WARNINGS/ADVISORIES...
FL...FIRE WEATHER WATCH FROM FRIDAY MORNING THROUGH FRIDAY EVENING
     FOR CHARLOTTE-DE SOTO-HARDEE-HIGHLANDS-HILLSBOROUGH-LEE-
     MANATEE-SARASOTA.

     FREEZE WATCH FROM LATE FRIDAY NIGHT THROUGH SATURDAY MORNING FOR
     CHARLOTTE-DE SOTO-HARDEE-HIGHLANDS-HILLSBOROUGH-MANATEE-
     POLK-SARASOTA.

     FREEZE WATCH FROM FRIDAY EVENING THROUGH SATURDAY MORNING FOR
     CITRUS-HERNANDO-LEVY-PASCO-SUMTER.

     RED FLAG WARNING FROM 11 AM TO 7 PM EST FRIDAY FOR CITRUS-
     HERNANDO-LEVY-PASCO-POLK-SUMTER.

     WIND CHILL ADVISORY FROM 5 AM TO 8 AM EST FOR LEVY...CITRUS...
     HERNANDO...PASCO...SUMTER...HILLSBOROUGH AND POLK.

GULF WATERS...NONE.

&&

SHORT TERM/MARINE....JILLSON
LONG TERM/AVIATION...CLOSE
Hazardous weather outlook, Feb 15, 7:52 AM EST, 6 hours 58 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
752 AM EST THU FEB 15 2007

FLZ039-042-043-048-049-151600-
LEVY-CITRUS-SUMTER-HERNANDO-PASCO-
752 AM EST THU FEB 15 2007

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

.DAY ONE...TODAY AND TONIGHT

SOME LIGHT RAINS ARE POSSIBLE TODAY AND EARLY THIS EVENING AS
MOISTURE MOVES IN FROM THE GULF OF MEXICO. TONIGHT...A REINFORCING
COLD FRONT WILL COME DOWN FROM THE NORTH AND CLEAR OUT THE RAIN
CHANCES OVERNIGHT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

TEMPERATURES FRIDAY MORNING WILL FALL TO AROUND FREEZING IN LEVY
COUNTY. COLD AIR WILL FILTER QUICKLY SOUTH WITH BREEZY CONDITIONS
FRIDAY. WIND CHILL READINGS ACROSS THE NATURE COAST WILL RANGE FROM
20 TO 30 DEGREES IN THE MORNING.

HIGH PRESSURE WILL BUILD IN BEHIND THE FRONT. MOSTLY CLEAR SKIES AND
LIGHT WINDS WILL ALLOW TEMPERATURES TO FALL QUICKLY AFTER SUNSET
FRIDAY. A HARD FREEZE IS POSSIBLE WITH READINGS FORECAST TO FALL
INTO THE MID 20S. A FREEZE WATCH IS IN PLACE FOR LONG DURATIONS OF
BELOW FREEZING TEMPERATURES.

YET ANOTHER FRONT WILL MOVE THROUGH SATURDAY NIGHT BRINGING A
SLIGHT CHANCE OF RAIN AND THEN ANOTHER ROUND OF NEAR FREEZING
TEMPERATURES MONDAY MORNING.

A FIRE WEATHER WATCH IS IN EFFECT FOR A COMBINATION OF LONG
DURATIONS OF RELATIVE HUMIDITIES BELOW 35 PERCENT AND WINDS AROUND
15 MPH ON FRIDAY. DRY AIR WILL REMAIN IN PLACE THROUGH TUESDAY...
AND RED FLAG CONDITIONS ARE POSSIBLE EACH AFTERNOON FROM FRIDAY
THROUGH TUESDAY.

STRONG WINDS BEHIND A COLD FRONT SATURDAY NIGHT MAY RESULT IN A
MULTITUDE OF HAZARDS FOR THE COASTAL WATERS AND COASTLINE.
FIRST...HAZARDOUS BOATING CONDITIONS WILL DEVELOP AS NORTHWEST
WINDS INCREASE TO 25 KNOTS WITH HIGHER GUSTS...AND SEAS BUILD TO 8
TO 11 FEET. THESE WAVES WILL REACH THE COASTLINE...AND COULD
RESULT IN ROUGH SURF WITH DANGEROUS RIP CURRENTS AS WELL AS SOME
MINOR COASTAL FLOODING AT TIMES OF HIGH TIDE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

FLZ050>052-055>057-060>062-065-151600-
PINELLAS-HILLSBOROUGH-POLK-MANATEE-HARDEE-HIGHLANDS-SARASOTA-
DE SOTO-CHARLOTTE-LEE-
752 AM EST THU FEB 15 2007

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

.DAY ONE...TODAY AND TONIGHT

SOME LIGHT RAINS ARE POSSIBLE TODAY AND EARLY THIS EVENING AS
MOISTURE MOVES IN FROM THE GULF OF MEXICO. TONIGHT...A REINFORCING
COLD FRONT WILL COME DOWN FROM THE NORTH AND CLEAR OUT THE RAIN
CHANCES OVERNIGHT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

COLD AIR WILL FILTER QUICKLY SOUTH BEHIND THE FRONT WITH BREEZY
CONDITIONS FRIDAY. HIGH PRESSURE WILL BUILD IN BEHIND THE FRONT.
MOSTLY CLEAR SKIES AND LIGHT WINDS WILL ALLOW TEMPERATURES TO FALL
QUICKLY AFTER SUNSET FRIDAY. A FREEZE IS POSSIBLE IN THE NORMALLY
COLDER INLAND LOCATIONS WITH READINGS FORECAST TO FALL TO AROUND 30
DEGREES THERE.

A FIRE WEATHER WATCH IS IN EFFECT FOR A COMBINATION OF LONG
DURATIONS OF RELATIVE HUMIDITIES BELOW 35 PERCENT AND WINDS AROUND
15 MPH ON FRIDAY. DRY AIR WILL REMAIN IN PLACE THROUGH TUESDAY...
AND MAY PRODUCE RED FLAG CONDITIONS AWAY FROM THE COAST EACH
AFTERNOON FROM FRIDAY THROUGH TUESDAY.

STRONG WINDS BEHIND A COLD FRONT SATURDAY NIGHT AND SUNDAY MAY
RESULT IN A MULTITUDE OF HAZARDS FOR THE COASTAL WATERS AND
COASTLINE. FIRST...HAZARDOUS BOATING CONDITIONS WILL DEVELOP AS
NORTHWEST WINDS INCREASE TO 25 KNOTS WITH HIGHER GUSTS...AND SEAS
BUILD TO 8 TO 11 FEET. THESE WAVES WILL REACH THE COASTLINE...AND
COULD RESULT IN ROUGH SURF WITH DANGEROUS RIP CURRENTS AS WELL AS
SOME MINOR COASTAL FLOODING AT TIMES OF HIGH TIDE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 15, 3:42 AM ESTFreeze WatchTBWDeSoto, Hardee, Highlands, Polk, Sumter31 hr
Feb 15, 4:01 PM ESTWind Chill AdvisoryTBWPolk, Sumter15 hr

Nearby

Red Flag Warnings in Florida, 2007Every red flag 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.