A short-lived severe thunderstorm developed during the afternoon hours in association with an unstable air mass.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS TAE wrote it up.
A short-lived severe thunderstorm developed during the afternoon hours in association with an unstable air mass.
The local office's own words before the first event, 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 the first event at Jul 20, 2:11 PM CST, 3 hours 4 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TALLAHASSEE FL 411 PM EDT TUE JUL 20 2010 .SYNOPSIS... CURRENT RADAR IMAGERY SHOWS SCATTERED SHOWERS ACROSS THE REGION...MOVING INLAND FAIRLY QUICKLY. SATELLITE IMAGERY SHOWS CU FIELD POPPING UP THROUGHOUT THE AREA. THE SOUNDING THIS MORNING SHOWED A RELATIVELY HIGH PWAT OF 2.04 IN...WITH SOUTH/ SOUTHWESTERLY WINDS. HEAT INDICES THIS AFTERNOON ARE IN THE LOW 100S REGION-WIDE WITH TEMPERATURES CURRENTLY RANGING FROM THE MID TO LOW 90S IN THE FL BIG BEND TO UPPER 90S IN SWRN GA. HIGHS THIS AFTERNOON SHOULD BE LITTLE HIGHER THAN THE CURRENT TEMPERATURES... WHERE NO RAIN IS EXPECTED. RAIN AND ASSOCIATED CU FIELD SHOULD DIMINISH IN THE EARLY EVENING HOURS AS DAYTIME HEATING IS LOST. CURRENT SFC ANALYSIS SHOWS HIGH PRESSURE OVER THE SERN CONUS. MODELS SHOW THAT THE BERMUDA HIGH WILL PUSH TO THE WEST A LITTLE MORE THROUGHOUT THE EVENING AND WEDNESDAY MORNING/AFTERNOON BEFORE RETREATING BACK TO THE EAST. THIS WILL SUPPRESS THE POPS A LITTLE OVER THE NEXT FEW DAYS...STILL ALLOWING SOME STRAY SHOWERS BUT LESS THAN WITH NORMAL SEABREEZE CONDITIONS. THIS ALSO KEEPS THE HIGH TEMPS IN THE UPPER 90S ACROSS THE REGION...POSSIBLY LOW 100S IN SWRN GA AND SERN AL. && .SHORT TERM (TONIGHT THROUGH THURSDAY)... RAIN CHANCES BOTH AFTERNOONS WILL BE MOSTLY DETERMINED BY THE SEABREEZE BUT WILL BE LOWER THAN NORMAL DUE TO HIGH PRESSURE IN THE REGION. ANY SHOWERS THAT FORM IN THE AFTERNOON HOURS WILL DWINDLE IN THE EARLY EVENING HOURS AS USUAL...WITH POSSIBLE SHOWERS FORMING OVER THE COASTAL WATERS DUE TO LANDBREEZE IN THE EARLY MORNING HOURS. SKIES SHOULD CLEAR EACH EVENING AS SHOWERS BEGIN TO DISSIPATE OVER LAND...SLOWLY INCREASING IN THE LATE MORNING HOURS TO A CU FIELD EACH AFTERNOON. HIGHS FOR THE NEXT TWO DAYS WILL BE IN THE UPPER 90S WHILE LOWS WILL ONLY DIP INTO THE MID TO LOW 70S. HEAT INDICES ON WEDNESDAY AND THURSDAY WILL MOST LIKELY REACH INTO THE 105 TO 108 RANGE REGION-WIDE. .LONG TERM (THURSDAY NIGHT THROUGH TUESDAY)... THE LARGE SCALE UPPER LEVEL PATTERN IN THE NRN STREAM COMMENCES WITH A RIDGE JUST OFF WEST COAST...BROAD TROFFING FROM INTERMOUNTAIN REGION EAST TO GREAT LAKES...A RIDGE OVER ERN STATES AND A TROUGH OVER WRN MOST ATLC. TYPICALLY SUMMERTIME SRN STREAM PATTERN HIGHLIGHTED BY A BROAD HIGH PRESSURE SUBTROPICAL RIDGE WITH RISING HEIGHTS...LOW PWATS AND STRONG SUBSIDENCE BUILDS ESE AND STRENGTHENS TO COMMENCE THE PERIOD. HOWEVER BEGINNING ON FRI...AND CONTINUING INTO THE WORK WEEK...RIDGE BEGINS TO WEAKEN AS AN UPPER LEVEL LOW AND TROPICAL WAVE OVER THE GULF APPROACHES THE AREA. BY SUN NIGHT...FORMER INTERMOUNTAIN TROUGH AND ASSOCD SHORTWAVES HAS MOVED EWD ACROSS NE CONUS. THIS WEAKENS AND SHIFTS DOMINANT SRN RIDGE ESE BACK INTO ATLC WITH ANOTHER DEVELOPING RIDGE AND STRONGEST HEIGHT RISES NOW OVER THE CENTRAL HIGH PLAINS. AT LOWER LEVELS...PERIOD BEGINS WITH BERMUDA HIGH RIDGING WWD JUST N OF LOCAL AREA WITH MODEST INCREASE IN LOW LEVEL THICKNESS. SO...FLOW AROUND SURFACE RIDGE WILL REMAIN GENERALLY FROM THE ESE AND LOWER ATMOSPHERE WILL MAINTAIN SOME MOISTURE WITH A CONTINUED DIURNAL CYCLE OF SMALL CHANCES OF MAINLY AFTN/EARLY EVE SHALLOW EAST COAST SEABREEZE GENERATED SHOWERS/TSTMS. CHANCES INCREASE BY SAT EVE INTO THE UPCOMING WORK WEEK AS HIGH AND WINDS WEAKEN GENERATING A LESS SHALLOW SEA BREEZE. ALSO...A TROPICAL WAVES WILL MOVE WESTWARD UNDER THE UPPER LEVEL RIDGE SUN INTO MON. THIS WAVE (UNDER PARENT LOW NOTED ABOVE) IN PARTICULAR PUSHES ASSOCD MOISTURE NWWD TO BEGIN IMPACTING LOCAL AREA BY SAT EVE. GFS AND ECMWF CONTINUE TO DIFFER ON TIMING OF THIS WAVE (ECMWF A BIT SLOWER) AS WELL AS WITH FRONT TO OUR N. BOTH INDICATE A WEAK SHORTWAVE PUSHING THROUGH THE OHIO VALLEY LATE IN THE WEEKEND WHICH MAY SERVE TO WEAKEN THE RIDGE A LITTLE. HOWEVER ...WETTER GFS WANTS TO PUSH THE WEAK OH VALLEY FRONT SWD TO APPROACH CWA AND BRING BETTER MOISTURE IN BEHIND WAVE. CONVERSELY...DRIER MORE ACCEPTED ECMWF MAINTAINS THE RIDGE ALOFT AND DRIER AIR OVER THE SOUTHEAST. SO OVERALL CONFIDENCE IS MODERATE...ESPECIALLY FOR DAYS 6/7. WILL GO WITH AOB WDLY SCT POPS EACH NIGHT. FOR DAYTIME...WDLY SCT POPS ON FR...WDLY SCT-LOW SCT ON SAT AND LOW-MID SCT POPS SUN THRU TUES. UNDER INFLUENCE OF E COAST SEABREEZE AND TROPICAL WAVE... HIGHEST POPS WILL BE ACROSS ERN BIG BEND AND APALACHEE BAY. WITH HIGH ALOFT AND ESE LOW LEVEL FLOW...EXPECT HOT AND SULTRY WEATHER. BOTH MIN/MAX TEMPS WILL REMAIN 2 TO 6 DEGREES ABOVE CLIMO (INLAND CLIMO IS AROUND 71/92). HIGHEST MAX TEMPERATURES COULD APPROACH 100. HEAT INDICES WILL GENERALLY MAX OUT AROUND 104 TO 106. && .AVIATION...THRU 18Z WED. VFR CONDITION WILL PREVAIL THROUGH THE FORECAST PERIOD EXCEPT FOR A POSSIBLE BRIEF PERIOD OF MVFR VSBY AROUND SUNRISE WED AT KDHN...KABY AND KVLD. CONVECTIVE COVERAGE WILL BE BELOW NORMAL AND IS NOT EXPLICITLY MENTION IN THE TAFS ANYWHERE EXCEPT DHN WHERE A BRIEF TEMPO GROUP WAS USED FOR LATE THIS AFTERNOON BASED ON THE WRF FORECAST. SHOWERS WILL LIKELY DEVELOP INLAND FROM ECP...SO ONLY VC WAS USED THERE. && .MARINE... WINDS THIS AFTERNOON ARE 10 TO 15 KNOTS WITH SEAS AROUND 3 FEET. THE RIDGE TO NORTH OF THE COASTAL WATERS SHOULD KEEP WINDS AND WAVES RELATIVELY THE SAME THROUGH THE OVERNIGHT HOURS. WAVE HEIGHTS WILL BEGIN A SLOW INCREASE WEDNESDAY ALONG WESTERN COASTAL WATERS...INCREASING TO 4 TO 5 FEET OFF SHORE BY WEDNESDAY EVENING. THERE IS A POSSIBILITY THAT A TROPICAL WAVE MAY APPROACH THE EASTERN GULF OF MEXICO THIS WEEKEND...WHICH WOULD INCREASE WINDS AND WAVES THROUGH THE PERIOD. && .FIRE WEATHER... NO FIRE WEATHER CONCERNS THROUGH THE PERIOD. && .PRELIMINARY POINT TEMPS/POPS... TALLAHASSEE 74 97 74 97 74 / 20 30 10 30 10 PANAMA CITY 76 92 76 94 77 / 20 30 10 30 10 DOTHAN 75 98 75 99 76 / 10 20 20 20 10 ALBANY 75 99 75 98 75 / 10 20 20 20 10 VALDOSTA 73 98 73 97 73 / 20 20 10 20 10 CROSS CITY 73 97 73 97 73 / 20 20 10 30 10 APALACHICOLA 76 93 75 94 76 / 20 30 10 20 10 && .TAE WATCHES/WARNINGS/ADVISORIES... AL...NONE. GA...NONE. FL...NONE. GM...NONE. && LONG TERM...BLOCK AVIATION/FIRE WX...WOOL/VAN DYKE REST OF DISCUSSION...M BARRY/MOORE
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TALLAHASSEE FL 401 AM EDT TUE JUL 20 2010 ALZ065>069-FLZ007>019-026>029-034-108-112-114-115-118-127-128-134- GAZ120>131-142>148-155>161-GMZ730-750-755-765-770-775-211000- COFFEE-DALE-HENRY-GENEVA-HOUSTON-INLAND WALTON-CENTRAL WALTON- HOLMES-WASHINGTON-JACKSON-INLAND BAY-CALHOUN-INLAND GULF- INLAND FRANKLIN-GADSDEN-LEON-INLAND JEFFERSON-MADISON-LIBERTY- INLAND WAKULLA-INLAND TAYLOR-LAFAYETTE-INLAND DIXIE-SOUTH WALTON- COASTAL BAY-COASTAL GULF-COASTAL FRANKLIN-COASTAL JEFFERSON- COASTAL WAKULLA-COASTAL TAYLOR-COASTAL 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- APALACHEE BAY OR COASTAL WATERS FROM KEATON BEACH TO OCHLOCKONEE RIVER FL OUT TO 20 NM- COASTAL WATERS FROM APALACHICOLA TO DESTIN FL OUT 20 NM- COASTAL WATERS FROM OCHLOCKONEE RIVER TO APALACHICOLA FL OUT TO 20 NM- COASTAL WATERS FROM SUWANNEE RIVER TO KEATON BEACH OUT 20 NM- WATERS FROM APALACHICOLA TO DESTIN FL FROM 20 TO 60 NM- WATERS FROM SUWANNEE RIVER TO APALACHICOLA FL FROM 20 TO 60 NM- 401 AM EDT TUE JUL 20 2010 /301 AM CDT TUE JUL 20 2010/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST ALABAMA... SOUTHWEST AND SOUTH CENTRAL GEORGIA...AND THE FLORIDA BIG BEND AND PANHANDLE...AND ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT... ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE ACROSS THE REGION THIS AFTERNOON...MAINLY OVER THE EASTERN FLORIDA PANHANDLE. WITH FEWER THEN NORMAL THUNDERSTORMS AND LESS CLOUD COVER...TEMPERATURES WILL SOAR INTO THE MID AND UPPER 90S WITH HEAT INDEX VALUES BETWEEN 100 AND 105 DEGREES. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY... WITH HIGH PRESSURE AND A RELATIVELY DRY AIR MASS IN PLACE...RAIN CHANCES WILL BE LESS THAN NORMAL FOR MUCH OF THE WEEK. WITHOUT THE TYPICAL COVERAGE OF AFTERNOON THUNDERSTORMS...TEMPERATURES WILL CONTINUE TO REACH THE MID AND UPPER 90S EACH AFTERNOON WITH HEAT INDEX VALUES APPROACHING 105 DEGREES. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE WEBSITE ON THE INTERNET AT WEATHER.GOV...THEN CLICK ON YOUR AREA OF INTEREST ON THE NATIONAL MAP. CAMP
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TALLAHASSEE FL 557 PM EDT TUE JUL 20 2010 FLZ010-012-013-112-202245- CALHOUN-COASTAL BAY-INLAND BAY-WASHINGTON- 457 PM CDT TUE JUL 20 2010 ...SIGNIFICANT WEATHER ADVISORY IN EFFECT FOR BAY...WESTERN CALHOUN AND WASHINGTON COUNTIES... * UNTIL 545 PM CDT AT 452 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 16 MILES WEST OF BLOUNTSTOWN TO 11 MILES EAST OF CALLAWAY...MOVING NORTHWEST AT 10 MPH. WINDS AROUND 40 MPH ARE EXPECTED WITH THESE STORMS. THIS STORM IS ALSO PRODUCING FREQUENT CLOUD TO GROUND LIGHTNING. 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. 42-DVD
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TALLAHASSEE FL 710 PM EDT TUE JUL 20 2010 ALZ065-066-210000- COFFEE-DALE- 610 PM CDT TUE JUL 20 2010 ...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR COFFEE AND WESTERN DALE COUNTIES... * UNTIL 700 PM CDT AT 605 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR ENTERPRISE...OR 28 MILES WEST OF DOTHAN... MOVING NORTH AT 10 MPH. PEA TO DIME SIZE HAIL...AND WINDS AROUND 40 MPH ARE EXPECTED WITH THIS STORM. THIS STORM IS CAPABLE OF PRODUCING TORRENTIAL DOWNPOURS WHICH MAY CAUSE LOCALIZED FLOODING OF STREETS AND LOW LYING AREAS...AND IS ALSO PRODUCING FREQUENT CLOUD TO GROUND LIGHTNING. 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. 42-DVD
The national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
Three large trees were blown down near Ozark. The monetary damage figure provided is a rough estimate.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Alabama in 2010Every state in 2010This day in weather historyWarnings in Alabama, July 2010
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 251269.