Alert archive / Florida / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 288, NWS Tallahassee, FL

December 25, 2006Dixie County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Dec 25, 2006, 7:11 AM EST for Dixie County, Florida. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 25, 2006, 7:11 AM EST (12:11 UTC)
Expired
Dec 25, 2006, 8:00 AM EST
In force
49 min
Issued by
NWS Tallahassee, FL
Area
Counties, with a storm outline in the text

County Dixie County, FL

The radar

The Tallahassee radar (KTLH), 143 km from the middle of the area, began a volume at 12:12 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Dec 25, 6:16 AM ESTTornado WatchSPC7 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 0.2 hours before the alert went out and 141 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, Tallahassee Rgnl, FL at 12:00Z on 2006-12-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 233 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, Tallahassee Rgnl, FL at 12:00Z on 2006-12-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 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
233 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
470 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Dec 25, 1:50 AM EST, 5 hours 21 minutes earlier.

Area forecast discussion, Dec 25, 1:50 AM EST, 5 hours 21 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TALLAHASSEE FL
150 AM EST MON DEC 25 2006

.SYNOPSIS...SFC LOW CONTINUES TO WIND UP OVER THE N CENTRAL GULF
LATE THIS EVENING...WITH A LARGE AREA OF LIGHT TO MODERATE RAIN WITH
A FEW EMBEDDED THUNDERSTORMS AFFECTING THE CWA. THUS FAR...RAINFALL
AMOUNTS HAVE GENERALLY BEEN AROUND ONE HALF OF AN INCH OR LESS AS OF
10 PM EST... EXCEPT SOME COASTAL AREAS OF THE FLORIDA BIG BEND HAVE
RECEIVED SUBSTANTIALLY HIGHER AMOUNTS. THE APALACHICOLA APPEARS TO
BE THE JACKPOT...AS THEY HAVE ACCUMULATED 3.24 INCHES THUS FAR. WITH
SEVERAL MORE HOURS OF RAIN TO GO...STILL EXPECT MOST AREAS TO
RECEIVE A SOLID 1 TO 2 INCHES...WITH SOME 3 TO 5 INCH AMOUNTS AT
SOME NEAR COASTAL AREAS. OVER THE COASTAL WATERS...WINDS AND SEAS
CONTINUE TO INCREASE...AND ARE NOW AT ADVISORY LEVELS OVER JUST
ABOUT THE ENTIRE MARINE AREA.

&&

.SHORT TERM...FCST CONTINUES TO BE GENERALLY RIGHT ON TRACK...WITH
ABOUT THE ONLY DISAPPOINTMENT BEING THE LOWER THAN EXPECTED
CONTRIBUTION IN PRECIPITATION FROM THE ISENTROPIC LIFT
COMPONENT...ESPECIALLY ACROSS GA AND AL. IN THE LONG RUN...
HOWEVER...STILL EXPECT A GENERAL 1 TO 2 INCHES...BUT THE HIGHEST
AMOUNTS OVER 3 INCHES WILL BE OVER AREAS TO THE SOUTH ACROSS THE FL
BIG BEND AND PANHANDLE. AS THE SFC LOW CONTINUES TO DEVELOP AND
EJECT OUT TO THE NE...IT WILL SWING ITS COLD FRONT THROUGH THE
REGION TODAY...WITH THE RAINFALL GRADUALLY WINDING DOWN FROM W TO E
ACROSS THE AREA. WRAP AROUND MOISTURE FROM THE UPPER LOW BEHIND THE
COLD FRONT COULD STILL PRODUCE A LIGHT SHOWER OR TWO LATER TODAY OR
TONIGHT...BUT NO ADDITIONAL SIGNIFICANT PRECIPITATION IS EXPECTED.
COOLER AND DRIER AIR WILL BUILD IN ON TUESDAY...WITH A LIGHT FREEZE
POSSIBLE ACROSS THE INTERIOR ON TUESDAY NIGHT.

&&

.LONG TERM...AFTER A GENERALLY FAIR AND DRY MID WEEK...CONFIDENCE
CONTINUES TO GROW THAT THE NEXT LOW PRESSURE SYSTEM WILL AFFECT THE
REGION BY FRIDAY OR SATURDAY...WITH YET ANOTHER SIGNIFICANT RAINFALL
POSSIBLE. THIS IS FINALLY BEGINNING TO LOOK LIKE A MORE TYPICAL EL
NINO PATTERN ACROSS THE SOUTHEAST U.S....WITH A VERY ACTIVE AND
PROGRESSIVE SUBTROPICAL JET STREAM...AND IF IT CONTINUES...WE COULD
MAKE SOME INROADS INTO OUR DROUGHT SITUATION.

&&

.AVIATION...LOW PRESSURE IS MOVING ONSHORE ALONG THE NORTHERN GULF
COAST EARLY THIS MORNING...WHILE THE WARM FRONT AHEAD OF IT IS
MOVING NORTHWARD ACROSS THE FLORIDA BIG BEND AND PANHANDLE...AND
WILL MOVE INTO SOUTHWEST AND SOUTH CENTRAL GEORGIA BY DAYBREAK.
RADAR ESTIMATES WINDS AOA 1THSND FT S-SE 30 TO 35 KTS...AND GUSTY SE
SFC WINDS 10 TO 20 KTS ARE BEING REPORTED FOLLOWING THE PASSAGE OF
THE WARM FRONT...WITH A FEW GUSTS OVER 30 KTS IN SOME OF THE MORE
INTENSE SHOWERS. MOST THUNDERSTORM ACTIVITY WILL REMAIN OFFSHORE OR
NEAR THE COAST WHERE THE INSTABILITY IS THE GREATEST. AS THE LOW
CONTINUES TO MOVE RAPIDLY NE TODAY...PRECIPITATION WILL DIMINISH
ACROSS AREA FROM WEST TO EAST 12Z-18Z. EXPECT PERIODS OF MVFR TO
LIFR CIGS AND VSBYS IN RA AT ABY...VLD AND TLH UNTIL AFTER
12Z...WITH MVFR CIGS PERSISTING ACRS THE AREA UNTIL AT LEAST 00Z.

&&

.MARINE...NOW THAT SCA CONDITIONS HAVE BECOME ESTABLISHED ACROSS THE
COASTAL WATERS...THEY WILL LIKELY RETAIN THEIR GRIP OVER THE MARINE
AREA INTO TUESDAY...BEFORE BUILDING HIGH PRESSURE PROVIDES SOME
RELIEF.

&&

.FIRE WEATHER...NO CONCERNS.

&&

.PRELIMINARY POINT TEMPS/POPS...
TALLAHASSEE  68  48  54  29  59 /  60  20  10   0   0
PANAMA CITY  68  49  55  34  59 /  30  20  10   0   0
DOTHAN       67  45  51  32  57 /  30  20  10   0   0
ALBANY       70  47  52  33  58 /  60  20  10   0   0
VALDOSTA     70  49  54  33  59 /  80  20  10   0   0
CROSS CITY   74  53  60  32  61 /  90  20  10   0   0

&&

.TAE WATCHES/WARNINGS/ADVISORIES...
AL...NONE.
GA...NONE.
FL...NONE.
GM...SCA ALL LEGS.

&&

AVIATION/FIRE WX...DUVAL
PUBLIC/MARINE...GOULD
Hazardous weather outlook, Dec 25, 2:51 AM EST, 4 hours 20 minutes before
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In the hours before

Special weather statement, Dec 25, 4:53 AM EST, 2 hours 18 minutes before
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Special weather statement, Dec 25, 6:37 AM EST, 34 minutes before
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Special weather statement, Dec 25, 7:01 AM EST, 10 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Dec 25, 7:27 AM ESTTornado WarningTAEDixie33 min
Dec 25, 6:42 PM ESTHigh Surf AdvisoryTAEBay, Gulf, Walton10 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2006Every severe thunderstorm warning in 2006

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.