Afternoon seabreeze thunderstorms developed across the area producing wind gusts generally in the range of 40 to 50 mph. This caused some minor damage to a mobile home and nearby trees.
Every event with a place to put it. Tap one for its entry below.
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 TBW wrote it up.
Afternoon seabreeze thunderstorms developed across the area producing wind gusts generally in the range of 40 to 50 mph. This caused some minor damage to a mobile home and nearby trees.
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 Tampa Bay, FL wrote its last area forecast discussion before the first event at Aug 23, 12:51 PM EST, 3 hours 39 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL 151 PM EDT TUE AUG 23 2011 .SHORT TERM (TONIGHT - THURSDAY)... DIURNAL SEA BREEZE DRIVEN CONVECTION WILL WIND DOWN AFTER SUNSET WITH LOSS OF DAYTIME HEATING WITH SKIES BECOMING PARTLY CLOUDY OVERNIGHT. ON WEDNESDAY WEAK HIGH PRESSURE WILL REMAIN IN CONTROL. SUFFICIENT MOISTURE COMBINED WITH DAYTIME HEATING WILL AGAIN SUPPORT SCATTERED SHOWERS AND THUNDERSTORMS ALONG THE SEA BREEZE BOUNDARIES DURING THE AFTERNOON. DURING WEDNESDAY NIGHT AND THURSDAY POWERFUL HURRICANE IRENE IS FORECAST TO TRACK NORTHWEST AND NORTH THROUGH THE BAHAMA CHAIN WELL TO THE EAST OF THE FLORIDA PENINSULA. FOR ADDITIONAL INFORMATION ON IRENE PLEASE SEE THE LATEST ADVISORIES BEING ISSUED BY THE NATIONAL HURRICANE CENTER. AS IRENE MOVES NORTHWEST AND NORTH PARALLEL TO THE FLORIDA EAST COAST BEST CHANCES FOR SHOWERS AND STORMS WILL BE OVER EASTERN INTERIOR COUNTIES WHERE THE DEEPEST MOISTURE WRAPPING AROUND IRENE CIRCULATION WILL RESIDE...WITH LOWERING RAIN CHANCES AS ONE MOVES WEST AND SOUTHWEST WHERE SLIGHTLY DRIER AIR AND SUBSIDENCE WILL RESIDE. GIVEN THIS WILL GO WITH 40 PERCENT POPS INLAND AREAS AND 30 PERCENT ACROSS THE REMAINDER OF THE FORECAST AREA ON THURSDAY. A TIGHTENING PRESSURE GRADIENT WILL SUPPORT AN INCREASING NORTHEAST TO NORTHERLY WIND FLOW ACROSS THE FORECAST AREA WITH BREEZY CONDITIONS DEVELOPING. TEMPERATURES WILL RUN A FEW DEGREES ABOVE NORMAL THROUGH THE PERIOD WITH DAYTIME HIGHS IN THE LOWER 90S WITH OVERNIGHT LOWS IN THE MID 70S INLAND AREA AND UPPER 70S TO AROUND 80 ALONG THE COAST. .LONG TERM (THURSDAY NIGHT - TUESDAY)... LONG TERM FORECAST REMAINS LARGELY DEPENDENT ON THE TRACK OF HURRICANE IRENE. LATEST NHC TRACK...GFS AND ECMWF CONTINUE TO TREND EAST. GIVEN THIS SCENARIO...DRY NNW FLOW ON FRIDAY WILL KEEP POPS RELATIVELY LOW. GFS SHOWS A RATHER COMPACT MOISTURE FIELD WHICH KEEPS MOST OF THE MOISTURE ON THE EAST COAST OR OFF SHORE WHILE THE ECMWF SPREADS IT FURTHER WEST. DECIDED TO LEAN MORE TOWARDS THE GFS FOR THE WEEKEND REGARDING POPS AND CLOUD COVER AND KEEP CONDITIONS RELATIVELY DRY WITH ONLY LOW END SCATTERED COVERAGE. WITH IRENE PASSING EAST OF THE STATE ON FRIDAY...WINDS ARE NOW EXPECTED TO BE IN THE 10-15 KT RANGE WITH GUSTS TO 20-25 KT...STRONGEST WINDS EXPECTED FURTHER INLAND. CONDITIONS EXPECTED TO IMPROVE BY SATURDAY WITH MORE TYPICAL SUMMERTIME CONDITIONS REESTABLISHING BY THE START OF THE WEEK. && .AVIATION... VFR CONDITIONS WILL PREVAIL OVER THE NEXT 24 HOURS. ONLY EXCEPTION MAY BE BRIEF MVFR VISIBILITIES AND CEILINGS NEAR SCATTERED THUNDERSTORMS THIS AFTERNOON. ONSHORE WINDS AROUND 08KTS WILL BECOME LIGHT AND VARIABLE AFTER 24/00Z WITH SKIES CLEARING. A LIGHT E/SE WIND WILL THEN BEGIN TO INCREASE IN SPEED AFTER 24/14Z. && .MARINE... HIGH PRESSURE FROM THE WESTERN ATLANTIC EXTENDING WEST ACROSS THE CENTRAL PENINSULA WILL MAINTAIN LIGHT WINDS AND SLIGHT SEAS OVER THE GULF WATERS TONIGHT THROUGH EARLY WEDNESDAY. DURING WEDNESDAY NIGHT THROUGH FRIDAY WINDS AND SEAS WILL BE ON THE INCREASE AS TROPICAL CYCLONE IRENE MOVES NORTHWEST AND NORTH OVER THE ATLANTIC WELL EAST OF THE FLORIDA PENINSULA. WITH THE CURRENT FORECAST TRACK OF IRENE REMAINING WELL TO THE EAST OF THE PENINSULA WINDS AND SEAS WILL LIKELY ONLY REACH EXERCISE CAUTION LEVELS DURING THURSDAY THROUGH EARLY FRIDAY. LIGHTER WINDS AND SEAS WILL RETURN TO THE WATERS DURING THE UPCOMING WEEKEND IN THE WAKE OF IRENE. FOR ADDITIONAL INFORMATION ON IRENE...SEE THE LATEST ADVISORIES BEING ISSUED BY THE NATIONAL HURRICANE CENTER. && .FIRE WEATHER... NO FIRE WEATHER ISSUES EXPECTED. && .PRELIMINARY POINT TEMPS/POPS... TPA 77 94 77 91 / 20 30 20 30 FMY 78 93 76 91 / 20 30 20 30 GIF 76 94 77 91 / 20 30 20 40 SRQ 78 93 78 90 / 20 30 20 30 BKV 74 93 75 91 / 20 30 20 30 SPG 79 93 79 90 / 20 30 20 30 && .TBW WATCHES/WARNINGS/ADVISORIES... FL...NONE. GULF WATERS...NONE. && SHORT TERM/MARINE/FIRE WEATHER...57/MCMICHAEL LONG TERM/AVIATION...24/COLSON
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL 518 AM EDT TUE AUG 23 2011 FLZ039-042-043-048>052-055>057-060>062-065-232130- LEVY-CITRUS-SUMTER-HERNANDO-PASCO-PINELLAS-HILLSBOROUGH-POLK- MANATEE-HARDEE-HIGHLANDS-SARASOTA-DE SOTO-CHARLOTTE-LEE- 518 AM EDT TUE AUG 23 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST FLORIDA. .DAY ONE...TODAY AND TONIGHT. ...THUNDERSTORM IMPACT... SCATTERED AFTERNOON THUNDERSTORMS WILL DEVELOP ALONG SEABREEZE BOUNDARIES THIS AFTERNOON AND EVENING. HEAVY DOWNPOURS THAT MAY PRODUCE LOCALIZED FLOODING OF LOW LYING AND POORLY DRAINED AREAS... AND FREQUENT CLOUD TO GROUND LIGHTNING WILL BE THE PRIMARY THREATS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. ...THUNDERSTORM IMPACT... SCATTERED AFTERNOON THUNDERSTORMS ARE POSSIBLE EACH DAY WITH CLOUD TO GROUND LIGHTNING AND HEAVY DOWNPOURS THE PRIMARY THREATS. ...WIND AND SEA IMPACT... EAST TO NORTHEAST WINDS WILL INCREASE ON THURSDAY AND BECOME NORTH TO NORTHWEST ON FRIDAY. THIS WILL BE IN RESPONSE TO HURRICANE IRENE MOVING NORTH OVER THE ATLANTIC. WINDS OF UP TO 20 KNOTS OVER THE GULF WATERS AND SEAS OF 4 TO 6 FEET WILL BE POSSIBLE BY LATE THIS WEEK. CONDITIONS WILL IMPROVE BY SATURDAY AND SUNDAY. WITH AN EXPECTED TRACK WELL OFFSHORE OF FLORIDAS EAST COAST...LOCAL IMPACTS OF IRENE SHOULD BE RATHER MINIMAL. CONTINUE TO MONITOR THE NATIONAL HURRICANE CENTER FOR ANY UPDATES TO THE FORECAST OF THIS HURRICANE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY. JOHNSON
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
402 PM EDT TUE AUG 23 2011
FLZ042-043-232030-
SUMTER-CITRUS-
402 PM EDT TUE AUG 23 2011
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR EASTERN CITRUS
AND NORTHWESTERN SUMTER COUNTIES FOR A STRONG THUNDERSTORM WITH
STRONG WIND GUSTS VALID UNTIL 430 PM EDT...
AT 401 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES A
STRONG THUNDERSTORM LOCATED OVER NORTHWESTERN SUMTER COUNTY...OR 9
MILES NORTHEAST OF INVERNESS...MOVING SOUTH AT 10 MPH WILL AFFECT
RURAL NORTHWESTERN SUMTER COUNTY AND RURAL EASTERN CITRUS COUNTY.
GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED WHICH CAN CAUSE UNSECURED
OBJECTS TO BLOW AROUND...SNAP TREE LIMBS AND CAUSE POWER OUTAGES.
FREQUENT TO CONTINUOUS LIGHTNING IS EXPECTED. TO BE SAFE GO INDOORS
IMMEDIATELY. IF CAUGHT OUTSIDE...FIND A LOW SPOT...AND STAY AWAY FROM
TALL OBJECTS. TORRENTIAL RAINS WILL REDUCE VISIBILITY TO NEAR ZERO
AND WILL CAUSE PONDING OF WATER ON ROADWAYS.
&&
LAT...LON 2896 8230 2896 8212 2896 8211 2880 8211
2881 8234 2897 8232 2897 8231
TIME...MOT...LOC 2002Z 006DEG 7KT 2891 8222SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
422 PM EDT TUE AUG 23 2011
FLZ056-057-061-232115-
DE SOTO-HARDEE-HIGHLANDS-
422 PM EDT TUE AUG 23 2011
...STRONG THUNDERSTORMS WILL AFFECT HIGHLANDS...EASTERN HARDEE AND
EASTERN DESOTO COUNTIES...
NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES A CLUSTER OF
THUNDERSTORMS LOCATED 9 MILES NORTH OF SEBRING AIR TERMINAL...OR 11
MILES NORTHEAST OF SEBRING...MOVING SOUTH AT 15 MPH...WILL AFFECT
THE MENTIONED AREAS INCLUDING SEBRING..BOWLING GREEN...AVON PARK AND
LAKE PLACID...UNTIL 515 PM EDT.
ADDITIONAL STORMS WILL DEVELOP OVER EASTERN DESOTO AND SOUTHERN
HIGHLANDS COUNTIES DURING THE NEXT HOUR OR SO.
GUSTY WINDS 35 TO 45 MPH WILL OCCUR. FREQUENT LIGHTNING IS EXPECTED.
TO BE SAFE GO INDOORS IMMEDIATELY. IF CAUGHT OUTSIDE...FIND A LOW
SPOT...AND STAY AWAY FROM TALL OBJECTS.
THESE STORMS MAY PRODUCE PEA SIZE HAIL. TORRENTIAL RAINS WILL REDUCE
VISIBILITY TO NEAR ZERO AND WILL CAUSE PONDING OF WATER ON ROADWAYS.
&&
LAT...LON 2722 8105 2720 8119 2713 8118 2712 8127
2708 8127 2708 8191 2763 8190 2763 8115
2751 8121 2743 8113 2740 8112 2733 8103
TIME...MOT...LOC 2019Z 018DEG 11KT 2757 8133SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
435 PM EDT TUE AUG 23 2011
FLZ052-232130-
POLK-
435 PM EDT TUE AUG 23 2011
...STRONG THUNDERSTORMS WILL AFFECT POLK COUNTY...
NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES A LINE OF
THUNDERSTORMS LOCATED ALONG A LINE EXTENDING FROM POLK CITY TO
FROSTPROOF...OR ALONG A LINE EXTENDING FROM 13 MILES NORTH OF
AUBURNDALE TO 10 MILES NORTHWEST OF AVON PARK...MOVING SOUTHWEST AT
10 MPH...WILL AFFECT MUCH OF POLK COUNTY INCLUDING WINTER
HAVEN...WAHNETA...POLK CITY AND LAKE WALES...UNTIL 530 PM EDT.
GUSTY WINDS 35 TO 45 MPH WILL OCCUR. FREQUENT LIGHTNING IS
OCCURRING. TO BE SAFE GO INDOORS IMMEDIATELY. IF CAUGHT
OUTSIDE...FIND A LOW SPOT...AND STAY AWAY FROM TALL OBJECTS.
THESE STORMS WILL PRODUCE PEA SIZE HAIL. WHEN DRIVING THROUGH HEAVY
RAIN...ESPECIALLY ALONG INTERSTATE 4...SLOW DOWN. ALWAYS LEAVE A
SAFE DISTANCE BETWEEN YOU AND OTHER VEHICLES.
&&
LAT...LON 2767 8203 2821 8205 2832 8193 2833 8169
2827 8165 2827 8163 2785 8129 2766 8118
TIME...MOT...LOC 2034Z 058DEG 7KT 2824 8188 2770 8162SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 441 PM EDT TUE AUG 23 2011 FLZ042-043-048-232115- SUMTER-CITRUS-HERNANDO- 441 PM EDT TUE AUG 23 2011 ...STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN CITRUS...NORTHERN HERNANDO AND NORTHERN SUMTER COUNTIES... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES THUNDERSTORMS LOCATED NEAR FLORAL CITY...OR 9 MILES SOUTHEAST OF INVERNESS...MOVING SOUTH AT 15 MPH...WILL AFFECT INVERNESS...LAKE PANASOFFKEE AND BUSHNELL...UNTIL 515 PM EDT. GUSTY WINDS 35 TO 45 MPH WILL OCCUR. TORRENTIAL RAINS WILL REDUCE VISIBILITY TO NEAR ZERO AND WILL CAUSE PONDING OF WATER ON ROADWAYS. && LAT...LON 2866 8201 2863 8245 2883 8244 2888 8212 TIME...MOT...LOC 2041Z 002DEG 15KT 2875 8223
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
511 PM EDT TUE AUG 23 2011
FLZ056-057-061-232215-
DE SOTO-HARDEE-HIGHLANDS-
511 PM EDT TUE AUG 23 2011
...STRONG THUNDERSTORMS WILL AFFECT CENTRAL AND WESTERN HIGHLANDS...
HARDEE AND DESOTO COUNTIES...
NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES A CLUSTER OF
THUNDERSTORMS LOCATED 7 MILES NORTHEAST OF GARNDER...OR 12 MILES
SOUTHEAST OF WAUCHULA...MOVING SOUTH AT 5 MPH...WILL AFFECT THE
MENTIONED AREAS INCLUDING ZOLFO SPRINGS...WAUCHULA...GARNDER...LILY
ANS ARCADIA UNTIL 615 PM EDT.
GUSTY WINDS 35 TO 45 MPH WILL OCCUR. FREQUENT LIGHTNING IS EXPECTED.
TO BE SAFE GO INDOORS IMMEDIATELY. IF CAUGHT OUTSIDE...FIND A LOW
SPOT...AND STAY AWAY FROM TALL OBJECTS. THESE STORMS WILL PRODUCE PEA
SIZE HAIL.
WHEN DRIVING THROUGH HEAVY RAIN...SLOW DOWN. ALWAYS LEAVE A SAFE
DISTANCE BETWEEN YOU AND OTHER VEHICLES.
&&
LAT...LON 2751 8134 2738 8135 2706 8128 2705 8203
2763 8202 2763 8131
TIME...MOT...LOC 2109Z 356DEG 5KT 2739 8170SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 524 PM EDT TUE AUG 23 2011 FLZ051-232215- HILLSBOROUGH- 524 PM EDT TUE AUG 23 2011 ...STRONG THUNDERSTORMS WILL AFFECT EASTERN AND CENTRAL HILLSBOROUGH COUNTY... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES THUNDERSTORMS LOCATED NEAR HILLSBOROUGH RIVER...OR 7 MILES NORTHWEST OF PLANT CITY...MOVING SOUTH AT 10 MPH...WILL AFFECT THE MENTIONED AREA INCLUDING THONOTOSASSA...HILLSBOROUGH RIVER...PLANT CITY AND SEFFNER...UNTIL 615 PM EDT. ADDITIONAL STORMS WILL DEVELOP AROUND BRANDON AND RIVERVIEW SHORTLY. GUSTY WINDS 35 TO 45 MPH WILL OCCUR. FREQUENT LIGHTNING IS EXPECTED. TO BE SAFE GO INDOORS IMMEDIATELY. IF CAUGHT OUTSIDE...FIND A LOW SPOT...AND STAY AWAY FROM TALL OBJECTS. THESE STORMS MAY PRODUCE PEA SIZE HAIL. WHEN DRIVING THROUGH HEAVY RAIN...ESPECIALLY ALONG MAJOR INTERSTATES AND HIGHWAYS...SLOW DOWN. ALWAYS LEAVE A SAFE DISTANCE BETWEEN YOU AND OTHER VEHICLES. && LAT...LON 2773 8207 2781 8236 2816 8233 2816 8208 TIME...MOT...LOC 2122Z 005DEG 7KT 2805 8222
The national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
Minor roof damage to a mobile home was reported near Chiefland. Some small trees were also blown over in the vicinity.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2011Every state in 2011This day in weather historyWarnings in Florida, August 2011
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: 337259.