A weak trough moving across north Florida produced a large area of thunderstorms. These storms generally produced 20 to 25 knot winds, however a few higher gusts were reported.
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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 TBW wrote it up.
A weak trough moving across north Florida produced a large area of thunderstorms. These storms generally produced 20 to 25 knot winds, however a few higher gusts were reported.
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 Jul 30, 11:50 AM EST, 2 hours 50 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL 1250 PM EDT MON JUL 30 2012 .SHORT TERM (TONIGHT-WEDNESDAY)... STAGNANT PATTERN CONTINUES WITH SURFACE HIGH PRESSURE OVER THE WESTERN ATLANTIC WITH THE RIDGE AXIS ACROSS SOUTH FLORIDA. THIS CONTINUES MUGGY ONSHORE SOUTHWEST FLOW OFF THE GULF OF MEXICO WITH SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPING NEAR THE COAST DURING THE LATE MORNING/EARLY AFTERNOON PUSHING INLAND THROUGH THE DAY. TUTT LOW OVER THE FLORIDA STRAITS IS INHIBITING CONVECTION OVER THE SOUTHERN HALF OF THE FORECAST AREA...WILL FILL SLOWLY OVER THE NEXT COUPLE OF DAYS BUT WILL PERSIST THROUGH WEDNESDAY OVER WESTERN CUBA/FLORIDA STRAITS. A WEAK TROUGH OVER NORTH FLORIDA IS ENHANCING CONVECTION ACROSS THE NATURE COAST AND THIS FEATURE ALSO WILL MOVE LITTLE DURING THE NEXT COUPLE OF DAYS. SHOWER/THUNDERSTORM ACTIVITY WILL DECREASE DURING THE LATE AFTERNOON/EVENING HOURS AND WILL REDEVELOP OVER THE NORTHERN COASTAL WATERS AFTER MIDNIGHT PUSHING LOCALLY ONSHORE MAINLY NORTH OF TARPON SPRINGS. TEMPERATURES WILL CONTINUE TO RUN ABOVE CLIMATOLOGICAL NORMALS EACH DAY. .LONG TERM (WEDNESDAY NIGHT - MONDAY)... A BROAD SURFACE RIDGE AXIS INITIALLY ACROSS SOUTHERN FL SLOWLY LIFTS NORTH...REACHING NORTHERN FL OR SOUTHERN GA FOR THE WEEKEND BEFORE STARTING TO DRIFT BACK SOUTH MON. THIS WILL SHIFT THE LOW LEVEL FLOW FROM SW AND WEST TO SOUTHEASTERLY. HOWEVER THE GRADIENT WILL REMAIN RELAXED...KEEPING WINDS LIGHT AND ALLOWING AFTERNOON SEA BREEZE CIRCULATIONS. MOISTURE INCREASES...AS THE RIDGE MOVES ACROSS THE AREA...AND WILL SUPPORT SCATTERED SHOWERS AND THUNDERSTORMS WITH THE HIGHEST ODDS IN THE AFTERNOONS. TEMPERATURES WILL RUN NEAR TO JUST ABOVE NORMAL. && .AVIATION... VFR CONDITIONS ARE EXPECTED. SHOWERS AND STORMS ARE CURRENTLY AFFECTING AREAS NORTH OF ALL THE TERMINALS AND THEY SHOULD STAY TO THE NORTH SO WILL LEAVE ANY MENTION OF RAIN OUT OF THE TAFS. && .MARINE... WEAK PRESSURE GRADIENT OVER THE WATERS WILL KEEP WINDS LESS THAN 15 KNOTS WITH SEAS LESS THAN 3 FEET THROUGH THE PERIOD. MAIN HAZARD WILL BE SCATTERED THUNDERSTORMS MAINLY OVER THE NORTHERN WATERS. && .FIRE WEATHER... NO FIRE WEATHER HAZARDS THROUGH THE PERIOD AS RELATIVE HUMIDITY VALUES WILL REMAIN ABOVE CRITICAL LEVELS EACH AFTERNOON. && .PRELIMINARY POINT TEMPS/POPS... TPA 78 91 79 91 / 20 20 20 20 FMY 78 93 77 91 / 20 30 20 30 GIF 76 94 76 94 / 20 40 20 30 SRQ 76 89 76 90 / 20 20 20 20 BKV 74 92 73 92 / 20 30 20 30 SPG 79 90 80 90 / 20 20 20 20 && .TBW WATCHES/WARNINGS/ADVISORIES... FL...NONE. GULF WATERS...NONE. && SHORT TERM/MARINE/FIRE WEATHER...13/OGLESBY LONG TERM/AVIATION...05/CARLISLE
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL 449 AM EDT MON JUL 30 2012 FLZ039-042-043-048>052-055>057-060>062-065-302100- LEVY-CITRUS-SUMTER-HERNANDO-PASCO-PINELLAS-HILLSBOROUGH-POLK- MANATEE-HARDEE-HIGHLANDS-SARASOTA-DESOTO-CHARLOTTE-LEE- 449 AM EDT MON JUL 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST FLORIDA. .DAY ONE...TODAY AND TONIGHT. ...THUNDERSTORM IMPACT... ISOLATED THUNDERSTORMS ARE EXPECTED TO FORM THIS MORNING ALONG COASTAL LOCATIONS AND THEN MOVE INLAND IN THE AFTERNOON AS THEY BECOME SCATTERED. GUSTY WINDS...LOCALLY HEAVY RAINFALL...AND DEADLY CLOUD TO GROUND LIGHTNING WILL BE THE MAIN HAZARDS WITH THE STORMS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. ...THUNDERSTORM IMPACT... ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP TUESDAY AND WEDNESDAY...WITH THE HIGHEST COVERAGE IN THE NORTH AND INLAND. THURSDAY THROUGH SUNDAY WILL SEE SCATTERED STORMS EACH DAY. THE STORMS COULD PRODUCE GUSTY WINDS...LOCALLY HEAVY RAINFALL...AND DEADLY CLOUD TO GROUND LIGHTNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY. 09/RKR
The Tampa radar (KTBW), 141 km away, was scanning. The volume nearest the first event began at 19:40 UTC.
1 thunderstorm wind. Local standard time, as filed.
A large tree fell on a house, with one person injured inside. A storm survey conducted by Sumter County Emergency Management revealed that the trees roots were rotted and the soil was soaked.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2012Every state in 2012This day in weather historyWarnings in Florida, July 2012
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: 403088.