Alert archive / Florida / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 273, NWS Tallahassee, FL

August 30, 2006Holmes County, Walton County, Washington County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Aug 30, 2006, 8:08 PM CDT for Holmes County, Walton County, Washington County, Florida. It was in force for 67 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
Aug 30, 2006, 8:08 PM CDT (01:08 UTC)
Expired
Aug 30, 2006, 9:15 PM CDT
In force
67 min
Issued by
NWS Tallahassee, FL
Area
Counties, with a storm outline in the text

Counties Holmes County, FL, Walton County, FL, Washington County, FL

The radar

The Eglin Afb radar (KEVX), 15 km from the middle of the area, began a volume at 01:11 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

Birmingham, AL (KBMX), launched 00:00Z, 1.1 hours before the alert went out and 289 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, Birmingham, AL at 00:00Z on 2006-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 927 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, Birmingham, AL at 00:00Z on 2006-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 square meters per square second.193958Sfc1 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
927 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
1221 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.4

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 Aug 30, 1:25 PM CDT, 6 hours 43 minutes earlier.

Area forecast discussion, Aug 30, 1:25 PM CDT, 6 hours 43 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TALLAHASSEE FL
225 PM EDT WED AUG 30 2006

.SYNOPSIS...AT 17Z THE COLD FRONT STRETCHED FROM EASTERN TENNESSEE
SOUTHWEST TO NEAR NEW ORLEANS. TD ERNESTO WAS CENTERED OVER SOUTH
FLORIDA THIS AFTERNOON AND MOVING TO THE NORTH. SO FAR MOST OF THE
RAIN ASSOCIATED WITH THIS SYSTEM HAS STAYED SOUTH AND EAST OF OUR
FA. A FEW STORMS WERE JUST STARTING TO DEVELOP OVER OUR EASTERN
GEORGIA ZONES. THE VAD WIND PROFILE SHOWS VERY WEAK STEERING FLOW SO
STORMS WILL BE SLOW MOVERS. SOME OF THE STORMS HAVE VERY HIGH
RAINFALL RATES SO WE WILL HAVE MINOR FLOODING CONCERNS FOR THE
REMINDER OF THE AFTERNOON INTO THE EVENING.

&&

.SHORT TERM...TONIGHT THROUGH THURSDAY NIGHT...
THE GFS SHOWS A CLOSED UPPER LOW DEVELOPING OVER THE OHIO VALLEY
TONIGHT DROPPING SLOWLY SOUTH THROUGH THURSDAY NIGHT DEEPENING THE
TROUGH TO OUR WEST. AT THE SURFACE...THE LATEST GFS FORECAST
POSITIONS FOR ERNESTO THROUGH THE SHORT TERM PERIOD ARE VERY CLOSE
TO THE OFFICIAL TPC FORECAST TRACK. THIS TRACK TAKES ERNESTO NEAR
MELBOURNE THIS EVENING...ABOUT 100 MILES EAST OF JACKSONVILLE BY
12Z THURSDAY...AND INLAND NEAR THE SOUTH CAROLINA/NORTH CAROLINA
BORDER EARLY FRIDAY MORNING. ON THIS TRACK...WE CAN EXPECT ONLY
FRINGE EFFECTS WITH SOME OF THE OUTER BANDS OVER OUR EASTERNMOST
ZONES...MAINLY THIS EVENING AND THURSDAY MORNING. MEANWHILE...
AS THE TROUGH DIGS AND THE TROPICAL SYSTEM DEPARTS WELL TO OUR
NORTHEAST...THE COLD FRONT WILL PUSH INTO OUR CWA THURSDAY WITH A
MUCH DRIER AIRMASS BEING PULLED INTO THE REGION. WILL SHOW 40% POP
TONIGHT...WITH THE EXCEPTION OF THE SOUTHEAST BIG BEND WITH 50% POP.
FOR THURSDAY...CHANCE (30-40%) POPS ALL ZONES WITH NIL TO SLIGHT
POPS FOR THURSDAY NIGHT. WITH THE DRIER AIR FILTERING IN...WE MAY
SEE MIN TEMPS DIP INTO THE UPPER 60S BY FRIDAY MORNING.

.LONG TERM...BY FRIDAY...A COOLER AND DRIER AIRMASS WILL HAVE
ESTABLISHED ITSELF OVER THE REGION AND WE ARE LOOKING FOR BELOW
AVERAGE POPS FROM FRI THROUGH AT LEAST MONDAY. BY MONDAY AFTERNOON...
WELL BE TRANSITIONING BACK TO A MORE SW FLOW WHICH SHOULD BUMP
MOISTURE UP ENOUGH TO GET SOME SHRA/TSRA GOING WITH THE SEA-BREEZE.
TEMPS THROUGHOUT THE EXTENDED ARE AROUND AVG FOR HIGHS AND JUST
BELOW TO RIGHT AROUND AVG FOR LOWS. ALL IN ALL...A GREAT WEEKEND
AND START TO NEXT WEEK.

&&

.MARINE...ERNESTO IS FORECAST TO RE-INTENSIFY INTO A TROPICAL STORM
SHORTLY AFTER MOVING INTO THE ATLANTIC EAST OF MELBOURNE. AS THE
SYSTEM LIFTS TO THE NORTHEAST...WINDS WILL BACK TO THE WEST AND
INCREASE SLIGHTLY OVER OUR COASTAL WATERS. FOR NOW WILL KEEP UNDER
HEADLINE CRITERIA. OTHERWISE...WINDS AND SEAS WILL BE LOW THROUGH
THE REMAINDER OF THE PERIOD.

&&

.AVIATION...VFR CONDITIONS ARE EXPECTED TO PREVAIL THROUGH THE
AFTERNOON AND EVENING.  SCATTERED SHOWERS AND THUNDERSTORMS ARE
ALREADY DEVELOPING ACROSS THE AREA...SO TEMPO GROUPS FOR MVFR VSBYS
AND CIGS HAVE BEEN INCLUDED AT ALL TERMINALS. SOME OF THESE STORMS
MAY RESULT IN VERY BRIEF IFR VSBYS AND CIGS... BUT PROBABILITY OF
THESE CONDITIONS AT ANY SPECIFIC TERMINAL REMAINS VERY LOW AND THEY
WERE THEREFORE NOT INDICATED IN THE TAF. THE SHOWER AND THUNDERSTORM
ACTIVITY SHOULD DISSIPATE INTO THE EVENING RESULTING IN VFR
CONDITIONS ACROSS THE AREA TONIGHT. FOR TOMORROW MORNING...INCLUDED
TEMPO GROUPS FOR MVFR VISIBILITIES AT DHN...ABY...AND VLD. HOW DENSE
THE FOG IS...OR WHETHER IT FORMS AT ALL... WILL LARGELY DEPEND ON
WHETHER THE TERMINALS RECEIVE ANY RAIN TODAY AND HOW MUCH OF AN
UPPER LEVEL CLOUD DECK FORMS OVERNIGHT. EXPECTING THE VFR CONDITIONS
TO CONTINUE INTO THE DAY TOMORROW WITH TYPICAL AFTERNOON SHOWERS AND
THUNDERSTORMS AFTER 18Z.

&&

.FIRE WEATHER...DRIER AIR WILL FILTER INTO THE REGION FRIDAY INTO
THE WEEKEND BUT MINIMUM RH VALUES ARE FORECAST TO REMAIN ABOVE
CRITICAL LEVELS. THE MODELS MAY NOT HAVE A GOOD HANDLE ON HOW MUCH
DRY AIR WILL FILTER IN AT THE SURFACE SO WE WILL HAVE TO MONITOR
CLOSELY FOR POSSIBLE RED FLAG CONDITIONS FRIDAY AND SATURDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
TALLAHASSEE  74 93 72 92/ 40 30 20 20
PANAMA CITY  77 91 74 90/ 40 30 10 10
DOTHAN       72 90 69 89/ 40 30 10 10
ALBANY       73 92 70 90/ 40 40 20 20
VALDOSTA     73 93 71 92/ 40 40 20 20
CROSS CITY   75 90 73 90/ 50 40 20 30

&&

.TAE WATCHES/WARNINGS/ADVISORIES...
AL...NONE.
GA...NONE.
FL...NONE.

&&

AVIATION...FOURNIER/MANNING
SHORT TERM/MARINE...BARRY
LONG TERM...MCNATT
Hazardous weather outlook, Aug 30, 4:00 AM CDT, 16 hours 8 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TALLAHASSEE FL
500 AM EDT WED AUG 30 2006

ALZ065>069-FLZ007>019-026>029-034-GAZ120>131-142>148-155>161-
GMZ750-755-770-775-310900-
COFFEE-DALE-HENRY-GENEVA-HOUSTON-INLAND WALTON-COASTAL WALTON-
HOLMES-WASHINGTON-JACKSON-BAY-CALHOUN-GULF-FRANKLIN-GADSDEN-LEON-
JEFFERSON-MADISON-LIBERTY-WAKULLA-TAYLOR-LAFAYETTE-DIXIE-QUITMAN-
CLAY-RANDOLPH-TERRELL-DOUGHERTY-LEE-WORTH-TURNER-TIFT-BEN HILL-
IRWIN-EARLY-MILLER-BAKER-MITCHELL-COLQUITT-COOK-BERRIEN-SEMINOLE-
DECATUR-GRADY-THOMAS-BROOKS-LOWNDES-LANIER-
COASTAL WATERS FROM APALACHICOLA TO DESTIN FL OUT TO 20 NM-
COASTAL WATERS FROM  SUWANNEE RIVER TO APALACHICOLA FL OUT TO
20 NM-
WATERS FROM APALACHICOLA TO DESTIN FL EXTENDING FROM 20 TO 60 NM-
WATERS FROM  SUWANNEE RIVER TO APALACHICOLA FL EXTENDING FROM
20 TO 60 NM-
400 AM CDT WED AUG 30 2006 /500 AM EDT WED AUG 30 2006/

THIS OUTLOOK IS FOR SOUTHEAST ALABAMA...NORTHWEST FLORIDA...SOUTH
CENTRAL GEORGIA...SOUTHWEST GEORGIA AND GULF OF MEXICO.

.DAY ONE...TODAY AND TONIGHT.
SHOWERS AND THUNDERSTORMS ARE LIKELY ACROSS THE REGION TODAY AS AN
UPPER LEVEL TROUGH APPROACHES FROM THE NORTHWEST AND TROPICAL
STORM ERNESTO MOVES NORTH AND THEN NORTHEAST THROUGH THE PENINSULA
OF FLORIDA AND OFF THE EAST-CENTRAL FLORIDA COAST TONIGHT. NO
HAZARDOUS WEATHER IS EXPECTED AT THIS TIME...ALTHOUGH A FEW
ISOLATED STORMS MAY PRODUCE HEAVY RAINFALL...FREQUENT
LIGHTNING...AND GUSTY WINDS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
TROPICAL STORM ERNESTO WILL CONTINUE ON ITS NORTHEAST PATH
THURSDAY AND IN ITS WAKE...DRIER AIR WILL MOVE IN OVER OUR AREA.
THIS WILL CREATE LOWER THAN NORMAL CHANCES FOR PRECIPITATION
FRIDAY THROUGH MONDAY AS WELL AS KEEP TEMPERATURES AROUND OR JUST
BELOW NORMAL. BY MONDAY...RAIN CHANCES SLOWLY BEGIN TO INCREASE
WITH THE NORMAL SEA-BREEZE INTERACTIONS.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE
IN TALLAHASSEE WEBSITE ON THE INTERNET AT WWW.SRH.NOAA.GOV/TAE.

MCNATT

In the hours before

Special weather statement, Aug 30, 4:55 PM CDT, 3 hours 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
555 PM EDT WED AUG 30 2006

ALZ066-302245-
DALE-
455 PM CDT WED AUG 30 2006

...A SIGNIFICANT WEATHER ALERT IS IN EFFECT FOR DALE COUNTY IN
SOUTHEAST ALABAMA...

* UNTIL 545 PM CDT

AT 448 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATED A STRONG THUNDERSTORM NEAR OZARK. THIS STORM WAS MOVING
EAST AT AROUND 5 MPH.

SMALL HAIL...AND WIND GUSTS TO AROUND 50 MPH ARE POSSIBLE WITH THIS
STORM.

NEARLY CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH
THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES
NUMBER ONE KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

ALSO...THIS STORM IS PRODUCING TORRENTIAL DOWNPOURS WHICH MAY CAUSE
LOCALIZED FLOODING OF STREETS AND LOW LYING AREAS.

14-MROCZKA
Special weather statement, Aug 30, 5:40 PM CDT, 2 hours 28 minutes before
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Local storm report, Aug 30, 5:54 PM CDT, 2 hours 14 minutes before
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Special weather statement, Aug 30, 6:07 PM CDT, 2 hours 1 minute before
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Local storm report, Aug 30, 6:41 PM CDT, 1 hour 27 minutes before
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Special weather statement, Aug 30, 6:44 PM CDT, 1 hour 24 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 8:09 PM CDTSpecial Marine WarningTAE96 min

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.