Alert archive / Florida / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 93, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Jul 30, 2003, 4:27 PM EDT for Hillsborough County, Florida. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 30, 2003, 4:27 PM EDT (20:27 UTC)
- Expired
- Jul 30, 2003, 5:00 PM EDT
- In force
- 33 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Counties, with a storm outline in the text
County Hillsborough County, FL
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 8.5 hours before the alert went out and 31 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.
- Mixed-layer CAPE
- 1486 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 910 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- -24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
085 WUUS52 KTBW 302027 SVRTBW FLC057-302100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 427 PM EDT WED JUL 30 2003 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN HILLSBOROUGH COUNTY IN FLORIDA. * UNTIL 500 PM EDT * AT 426 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS...OVER BRANDON...MOVING EAST AT 5 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... VALRICO. PLANT CITY BY 500 PM EDT. BLOOMINGDALE BY 500 PM EDT. BRANDON. DOVER BY 500 PM EDT. MOVE INSIDE A STURDY BUILDING. DAMAGING WIND...LARGE HAIL... TORRENTIAL RAIN...AND DEADLY LIGHTNING ARE EXPECTED. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. DO NOT USE ELECTRICAL APPLIANCES OR TELEPHONES. && LAT...LON 2799 8235 2781 8231 2785 8207 2805 8210 $$ 57
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 Tampa Bay, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 30, 2:00 PM EDT, 2 hours 27 minutes earlier.
Area forecast discussion, Jul 30, 2:00 PM EDT, 2 hours 27 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 200 PM EDT WED JUL 30 2003 VERY LITTLE CHANGE TO CURRENT PATTERN FOR THE FORESEEABLE FUTURE. WEAK 500 MB RIDGING WILL SNEAK BACK ACROSS THE CENTRAL AND S PENINSULA...BUT WEAKENING SHEAR AXIS WILL MAINTAIN A PRESENCE ACROSS N FL AND S AL/GA. AS SUCH...WEAK SW FLOW JUST OFF THE SFC WILL CONTINUE THE CHANCE OF EARLY MORNING COASTAL CONVECTION... SPREADING INLAND FROM LATE MORNING THROUGH MID AFTN EACH DAY. MODELS IN FAIRLY GOOD AGREEMENT THIS PERIOD. GFS A SHADE MORE PRONOUNCED WITH SW FLOW OFF THE SFC...WHICH IS VERIFYING WELL BY 00Z AND 12Z SOUNDINGS. WILL LEAN TOWARDS IT...BUT NOT ACCEPT VERY HIGHS MOISTURE SOLUTION ACROSS THE NATURE COAST. SHORT TERM (TONIGHT - FRI): WHAT YOU SEE IS WHAT YOU GET. ACTIVITY HAS BEEN NUMEROUS IN LEVY CO TODAY AND SCT ELSEWHERE...BUT WILL TAIL BACK TO SCT EVERYWHERE...A SMIDGE UNDER CLIMO GIVEN EXPECTED MID LEVEL DRYING. MAY ADD A REMAINDER OF AFTN PERIOD FOR LEVY PENDING EVOLUTION OF CURRENT ACTIVITY AND PERHAPS ACROSS INTERIOR COS...BUT EXPECT NO MORE THAN ISOLD ELSEWHERE AS ATMOSPHERE HAS STABILIZED SOMEWHAT. SIMILAR SETUP THURS AND FRI...WITH PERHAPS A BIT LESS COVERAGE CENTRAL AND S GIVEN SLIGHTLY DRIER AIR MASS. THE DRIER AIR ALOFT WILL SUPPORT A FEW SEVERE CELLS EACH AFTERNOON. EXTENDED (FRI NIGHT - WED): SURFACE RIDGE AXIS WILL CONTINUE TO DRIFT NORTH AND SOUTH ACROSS THE CENTRAL AND SOUTHERN PORTIONS OF THE PENINSULA THROUGH THE EXTENDED PERIOD WITH MORE ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS EACH DAY. SHOULD SEE CONVECTION FIRST DEVELOP DURING THE MID TO LATE MORNING HOURS ALONG THE COAST AND THEN MOVE INLAND ACROSS NORTHERN AND CENTRAL ZONES...WITH MAINLY AFTERNOON AND EVENING OVER SOUTHERN ZONES. TEMPERATURES WILL REMAIN NEAR NORMAL THROUGH THE PERIOD. MARINE: MEANDERING RIDGE AXIS WILL KEEP WINDS LIGHT... TENDING TOWARD THE S OR SW. LITTLE CHANGE TO CURRENT PACKAGE. FIRE WX: NO PROBLEMS EXPECTED. PRELIM NUMBERS: TPA 077/090 076/090 2524 FMY 076/091 075/092 2525 GIF 075/092 075/092 3535 SRQ 075/089 075/090 2424 BKV 072/091 072/092 2525 .TBW...NONE. BSG/PRC
Hazardous weather outlook, Jul 30, 5:34 AM EDT, 10 hours 53 minutes before
FLZ039-042-043-048>052-055>057-060>062-065-301530- WEST CENTRAL AND SOUTHWEST FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 534 AM EDT WED JUL 30 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST FLORIDA. .DAY ONE...TODAY: ...MORE ISOLATED SEVERE THUNDERSTORMS POSSIBLE TODAY... AS TEMPERATURES CLIMB TO NEAR 90 THIS AFTERNOON...THE ATMOSPHERE WILL BECOME QUITE UNSTABLE. DURING THIS TIME...THE GULF SEA BREEZE WILL MOVE INLAND...PROVIDING A FOCUSING MECHANISM FOR SCATTERED THUNDERSTORMS. THE STRONGEST STORMS WILL CONTAIN HAIL...HEAVY RAIN IN EXCESS OF TWO INCHES...AND WIND GUSTS TO 50 MPH OR HIGHER. EXCESSIVE LIGHTNING IS ALSO EXPECTED. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY: SCATTERED THUNDERSTORMS ARE EXPECTED EACH DAY AS TYPICAL SUMMERTIME CONDITIONS PERSIST. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS REQUESTED TODAY. WEATHER SPOTTERS ARE REMINDED TO RELAY ANY REPORTS OF SIGNIFICANT WEATHER TO THE NWS OFFICE IN RUSKIN. ALSHEIMER
In the hours before
Local storm report, Jul 30, 12:35 PM EDT, 3 hours 52 minutes before
MARINE LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1235 PM EDT WED JUL 30 2003
TIME(EDT) .....MARINE SUBZONE.... GMZ ...EVENT/REMARKS...
......MARINE ZONE......
1145 AM HOMOSASSA-WACASASSA 850 WATERSPOUT
07/30/03 TARP SPGS-SUWANNEE 20NM FOUR SEPARATE WATERSPOUTS
REPORTED APPROXIMATELY 5
MILES NORTHWEST OF SHELL
ISLAND IN EXTREME NORTHWEST
CITRUS COUNTY. REPORTED BY
GEN PUBLIC MARINER THROUGH
LOCAL MEDIA EVENT LASTED 30
MIN.Special weather statement, Jul 30, 4:16 PM EDT, 11 minutes before
FLZ052-302100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 416 PM EDT WED JUL 30 2003 ...STRONG THUNDERSTORMS WILL AFFECT RURAL SOUTHEASTERN POLK COUNTY THROUGH 500 PM EDT... A CLUSTER OF STRONG THUNDERSTORMS EAST OF LAKE WALES WILL AFFECT RURAL SOUTHEASTERN POLK COUNTY...UNTIL 500 PM EDT. FREQUENT CLOUD TO GROUND LIGHTNING IS EXPECTED ALONG WITH GUSTY WINDS TO 30 MPH. IF CAUGHT OUTSIDE...CROUCH DOWN IN A LOW SPOT...AWAY FROM TALL OBJECTS. RAINFALL RATES OF 1 TO 2 INCHES PER HOUR WILL OCCUR WITH THESE STORMS. MOTORISTS CAN EXPECT PONDING OF WATER ON ROADS...AND MINOR FLOODING OF POOR DRAINAGE AREAS. MCMICHAEL
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 1:04 PM EDT | Severe Thunderstorm Warning | TBW | Polk | 26 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2003Every severe thunderstorm warning in 2003
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.