Alert archive / Florida / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 16, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Apr 15, 2007, 10:02 AM EDT for Manatee County, Florida. It was in force for 28 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
- Apr 15, 2007, 10:02 AM EDT (14:02 UTC)
- Expired
- Apr 15, 2007, 10:30 AM EDT
- In force
- 28 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Counties, with a storm outline in the text
County Manatee County, FL
The radar
The Tampa radar (KTBW), 26 km from the middle of the area, began a volume at 14:01 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
Tampa Bay, FL (KTBW), launched 12:00Z, 2.0 hours before the alert went out and 26 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
- 1470 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 579 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 331 m²/s²
- 0-3 km storm-relative helicity
- 310 m²/s²
- Significant tornado parameter
- 2.9
- Supercell composite
- 12.0
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 Apr 15, 9:50 AM EDT, 12 minutes earlier.
Area forecast discussion, Apr 15, 9:50 AM EDT, 12 minutes before
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</html>Hazardous weather outlook, Apr 15, 5:07 AM EDT, 4 hours 55 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL 507 AM EDT SUN APR 15 2007 FLZ039-042-043-048>052-055>057-060>062-065-152115- LEVY-CITRUS-SUMTER-HERNANDO-PASCO-PINELLAS-HILLSBOROUGH-POLK- MANATEE-HARDEE-HIGHLANDS-SARASOTA-DE SOTO-CHARLOTTE-LEE- 507 AM EDT SUN APR 15 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST FLORIDA. .DAY ONE...TODAY. ...THUNDERSTORM IMPACT... A BAND OF SHOWERS AND THUNDERSTORMS...A FEW POSSIBLY SEVERE...WILL MOVE ACROSS WEST CENTRAL AND SOUTHWEST FLORIDA THIS MORNING. THE MAIN THREAT WILL BE STRONG DAMAGING WINDS AND SMALL HAIL...BUT AN ISOLATED TORNADO CANNOT BE RULED OUT. ...WIND AND SEA IMPACT... WINDS WILL INCREASE TO 20 TO 30 KNOTS TODAY WITH RAPIDLY INCREASING SEAS. MARINERS OF SMALL CRAFTS SHOULD REMAIN IN PORT TODAY AS WINDS AND SEAS WILL BE HAZARDOUS. A WIND ADVISORY IS IN EFFECT FOR WEST CENTRAL AND SOUTHWEST FLORIDA TODAY. SOUTHWEST WINDS THIS MORNING 15 TO 25 MPH WILL BECOME NORTHWEST 20 TO 25 MPH WITH HIGHER GUSTS THIS AFTERNOON. ...COASTAL FLOOD IMPACT... STRONG ONSHORE WINDS WILL CAUSE WATER TO PILE UP ALONG THE COAST. WATER LEVELS MAY RISE 1 TO 2 FEET ABOVE ASTRONOMICAL TIDES. MINOR COASTAL FLOODING MAY OCCUR AROUND HIGH TIDE LATE THIS MORNING AND EARLY THIS AFTERNOON. HIGH SURF WILL CONTINUE THROUGH MONDAY MORNING WHICH MAY CAUSE SOME BEACH EROSION. A HIGH SURF ADVISORY IS IN EFFECT THROUGH 8 AM MONDAY MORNING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO SIGNIFICANT HAZARDS ARE EXPECTED. .SPOTTER INFORMATION STATEMENT... FORMAL ACTIVATION MAY BE NEEDED. OGLESBY
In the hours before
Special weather statement, Apr 15, 4:58 AM EDT, 5 hours 4 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL 458 AM EDT SUN APR 15 2007 FLZ039-042-043-048-049-151100- LEVY-CITRUS-SUMTER-HERNANDO-PASCO- INCLUDING THE CITIES OF...CEDAR KEY...CHIEFLAND...CRYSTAL RIVER... INVERNESS...BUSHNELL...THE VILLAGES...BROOKSVILLE...SPRING HILL... NEW PORT RICHEY...ZEPHYRHILLS 458 AM EDT SUN APR 15 2007 ...HAZARDOUS WEATHER ON TRACK FOR THE NATURE COAST EARLY THIS MORNING... OVERVIEW: AS EXPECTED...WARM HUMID AIR HAS OVERSPREAD THE NATURE DRIVEN BY BREEZY SOUTHERLY WINDS. A SQUALL LINE CONTINUES TO DEVELOP IN THE EASTERN GULF AND WILL INTENSIFY BEFORE MOVING ONSHORE AROUND OR JUST PRIOR TO DAYBREAK. SEVERE WEATHER: RADAR DATA FROM TALLAHASSEE AND TAMPA BAY INDICATE WINDS FLOWING INTO THE SQUALL LINE JUST OFF THE SURFACE MAY BE EXCEEDING 50 MPH. THIS INCREASES CONFIDENCE THAT AS THE LINE MOVES THROUGH...SOME OF THE CELLS WILL BECOME SEVERE WITH WIND GUSTS IN EXCESS OF 60 MPH. STRONG WIND FIELDS ALONG WITH SOME TURNING OF THE WINDS MAINTAINS THE THREAT OF ISOLATED TORNADOES. CURRENT DATA SUGGEST STORMS WILL REACH LEVY COUNTY BEFORE 6 AM...CITRUS COUNTY BY 7 PM...AND HERNANDO AND PASCO COUNTY AFTER 730 AM. SEVERE THUNDERSTORM OR TORNADO WATCHES MAY BE ISSUED BEFORE 6 AM. COASTAL FLOODING: AS THE LINE CROSSED APALACHICOLA SHORTLY AFTER 3 AM...WINDS GUSTED TO 57 MPH AND TIDES SPIKED TO 1.7 FEET ABOVE NORMAL. WITH THE LINE EXPECTED TO INTENSIFY...THE POTENTIAL FOR A BRIEF 3 TO 6 FOOT SURGE CONTINUES. DESPITE LOW ASTRONOMICAL TIDES AND DIURNAL LOW TIDES...THIS SURGE...IF IT OCCURS...WOULD CAUSE MINOR TO LOCALLY MODERATE COASTAL FLOODING. SHOULD THE LINE INTENSIFY...A SHORT FUSED WARNING MAY BE REQUIRED. POST FRONTAL WINDS: SUSTAINED WINDS WILL INCREASE TO 25 TO 35 MPH WITH FREQUENT GUSTS ABOVE 40 MPH...BEGINNING BY LATE MORNING. WIND ADVISORIES REMAIN IN EFFECT. IF YOU HAVENT DONE SO ALREADY...LIGHTWEIGHT UNFASTENED OBJECTS SHOULD BE MOVED INDOORS IMMEDIATELY. STAY TUNED TO NOAA WEATHER RADIO FOR UPDATES THROUGH THE MORNING. FLZ050>052-055-056-060-151100- PINELLAS-HILLSBOROUGH-POLK-MANATEE-HARDEE-SARASOTA- INCLUDING THE CITIES OF...CLEARWATER...ST. PETERSBURG...BRANDON... TAMPA...LAKELAND...WINTER HAVEN...BRADENTON...WAUCHULA... SARASOTA...VENICE 458 AM EDT SUN APR 15 2007 ...HAZARDOUS WEATHER ON TRACK FOR THE TAMPA BAY AND LAKELAND AREA AROUND AND AFTER SUNRISE... OVERVIEW: AS EXPECTED...WARM HUMID AIR HAS OVERSPREAD THE AREA...DRIVEN BY GUSTY SOUTHERLY WINDS. A SQUALL LINE CONTINUES TO DEVELOP IN THE EASTERN GULF AND WILL CONTINUE DEVELOPING SOUTHWARD AND LIKELY INTENSIFY BEFORE MOVING ONSHORE AFTER DAYBREAK. SEVERE WEATHER: RADAR DATA FROM TALLAHASSEE AND TAMPA BAY INDICATE WINDS FLOWING INTO THE SQUALL LINE JUST OFF THE SURFACE MAY BE EXCEEDING 50 MPH. THIS INCREASES CONFIDENCE THAT AS THE LINE MOVES THROUGH...SOME OF THE CELLS WILL BECOME SEVERE WITH WIND GUSTS IN EXCESS OF 60 MPH. STRONG WIND FIELDS ALONG WITH SOME TURNING OF THE WINDS MAINTAINS THE THREAT OF ISOLATED TORNADOES. CURRENT DATA SUGGEST STORMS WILL REACH PINELLAS COUNTY BETWEEN 8 AND 9 AM...HILLSBOROUGH COUNTY BETWEEN 9 AND 10 AM...AND THE REMAINDER OF THE AREA AFTER 9 AM. SEVERE THUNDERSTORM OR TORNADO WATCHES MAY BE ISSUED FOR ALL OR PART OF THE AREA BY 6 AM. COASTAL FLOODING: AS THE LINE CROSSED APALACHICOLA SHORTLY AFTER 3 AM...WINDS GUSTED TO 57 MPH AND TIDES SPIKED TO 1.7 FEET ABOVE NORMAL. WITH THE LINE EXPECTED TO INTENSIFY...THE POTENTIAL FOR A BRIEF 3 TO 6 FOOT SURGE CONTINUES. DESPITE LOW ASTRONOMICAL TIDES ...THIS SURGE...IF IT OCCURS...WOULD CAUSE MINOR TO LOCALLY MODERATE COASTAL FLOODING. SHOULD THE LINE INTENSIFY...A SHORT FUSED WARNING MAY BE REQUIRED. TIDES WILL BE SLOWLY RISING BUT STILL CLOSE TO DIURNAL LOW VALUES AS THE SQUALL LINE PASSES. POST FRONTAL WINDS: SUSTAINED WINDS WILL INCREASE TO 25 TO 35 MPH WITH FREQUENT GUSTS ABOVE 40 MPH...BEGINNING BY LATE MORNING. WIND ADVISORIES REMAIN IN EFFECT. IF YOU HAVENT DONE SO ALREADY...LIGHTWEIGHT UNFASTENED OBJECTS SHOULD BE MOVED INDOORS IMMEDIATELY. STAY TUNED TO NOAA WEATHER RADIO FOR UPDATES THROUGH THE MORNING. FLZ057-061-062-065-151100- HIGHLANDS-DE SOTO-CHARLOTTE-LEE- INCLUDING THE CITIES OF...SEBRING...AVON PARK...ARCADIA... PORT CHARLOTTE...PUNTA GORDA...CAPE CORAL...FORT MYERS 458 AM EDT SUN APR 15 2007 ...STORMY WEATHER STILL ON TRACK FOR LATE THIS MORNING... OVERVIEW: AS EXPECTED...WARM HUMID AIR HAS OVERSPREAD SOUTHWEST FLORIDA...DRIVEN BY GUSTY SOUTHERLY WINDS. A SQUALL LINE CONTINUES TO DEVELOP IN THE EASTERN GULF AND WILL CONTINUE DEVELOPING SOUTHWARD AND LIKELY INTENSIFY BEFORE MOVING ONSHORE AFTER 10 AM. SEVERE WEATHER: RADAR DATA FROM TALLAHASSEE AND TAMPA BAY INDICATE WINDS FLOWING INTO THE SQUALL LINE JUST OFF THE SURFACE MAY BE EXCEEDING 50 MPH. IN ADDITION...THE LINE IS EXPECTED TO ACCELERATE AS IT CROSSES SOUTHWEST THROUGH SOUTH CENTRAL FLORIDA LATER THIS MORNING. THIS INCREASES CONFIDENCE THAT AS THE LINE MOVES THROUGH...SOME OF THE CELLS WILL BECOME SEVERE WITH WIND GUSTS IN EXCESS OF 60 MPH. CURRENT DATA SUGGEST STORMS WILL REACH THE COAST...AS WELL AS HIGHLANDS COUNTY...BETWEEN 10 AND 11 AM AND CLEAR THE ENTIRE AREA BY NOON. SEVERE THUNDERSTORM OR TORNADO WATCHES MAY BE ISSUED FOR ALL OR PART OF THE AREA BY 6 AM. COASTAL FLOODING: AS THE LINE CROSSED APALACHICOLA SHORTLY AFTER 3 AM...WINDS GUSTED TO 57 MPH AND TIDES SPIKED TO 1.7 FEET ABOVE NORMAL. WITH THE LINE EXPECTED TO INTENSIFY...THE POTENTIAL FOR A BRIEF 2 TO 4 FOOT SURGE CONTINUES. DESPITE LOW ASTRONOMICAL TIDES...THIS SURGE...IF IT OCCURS...WOULD CAUSE MINOR COASTAL FLOODING IN A FEW PRONE AREAS PARTICULARLY THOSE WITH WEST OR NORTHWEST EXPOSURES. SHOULD THE LINE INTENSIFY...A SHORT FUSED WARNING MAY BE REQUIRED. TIDES WILL BE CLOSE TO DIURNAL LOW VALUES AS THE SQUALL LINE PASSES WHICH SHOULD MITIGATE SOME OF THE EFFECTS. POST FRONTAL WINDS: SUSTAINED WINDS WILL INCREASE TO 25 TO 35 MPH WITH FREQUENT GUSTS ABOVE 40 MPH...BEGINNING BY NOON. WIND ADVISORIES REMAIN IN EFFECT. IF YOU HAVENT DONE SO ALREADY...LIGHTWEIGHT UNFASTENED OBJECTS SHOULD BE MOVED INDOORS IMMEDIATELY. STAY TUNED TO NOAA WEATHER RADIO FOR UPDATES THROUGH THE MORNING. BSG
Special weather statement, Apr 15, 7:18 AM EDT, 2 hours 44 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 718 AM EDT SUN APR 15 2007 FLZ039-151200- LEVY- 718 AM EDT SUN APR 15 2007 ...STRONG WINDS WILL AFFECT LEVY COUNTY... A LINE OF THUNDERSTORMS...CURRENTLY FROM CHIEFLAND SOUTH TO CEDAR KEY AND MOVING NORTHEAST AT 45 MPH...WILL ALSO AFFECT BRONSON AND OTTER CREEK...UNTIL 800 AM EDT. GUSTY WINDS UP TO 50 MPH ASSOCIATED WITH THIS LINE MAY CAUSE LOOSE OBJECTS TO BLOW AROUND. SOME DAMAGE TO TREE LIMBS AND WIRES IS POSSIBLE. IN ADDITION BRIEF HEAVY RAINS ARE POSSIBLE RJS
Special weather statement, Apr 15, 8:35 AM EDT, 1 hour 27 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 835 AM EDT SUN APR 15 2007 FLZ042-043-048>051-055-151330- SUMTER-MANATEE-PINELLAS-HERNANDO-HILLSBOROUGH-CITRUS-PASCO- 835 AM EDT SUN APR 15 2007 ...STRONG THUNDERSTORMS APPROACHING COAST OF WEST CENTRAL FLORIDA... A LINE OF THUNDERSTORMS...MOVING EAST AT 40 MPH...WILL AFFECT CHASSAHOWITZKA...WEEKI WACHEE...TARPON SPRINGS...PORT RICHEY... AND CLEARWATER BEACH TO EGMONT KEY...UNTIL 930 AM EDT. GUSTY WINDS UP TO 50 MPH MAY CAUSE LOOSE OBJECTS TO BLOW AROUND. SOME DAMAGE TO TREE LIMBS AND WIRES IS POSSIBLE. FREQUENT CLOUD TO GROUND LIGHTNING IS EXPECTED. TORRENTIAL RAINS WILL CAUSE PONDING OF WATER ON ROADS...AND MINOR FLOODING OF POOR DRAINAGE AREAS.
Special weather statement, Apr 15, 9:25 AM EDT, 37 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 925 AM EDT SUN APR 15 2007 FLZ043-048-049-051-055-060-151415- SUMTER-MANATEE-HERNANDO-SARASOTA-HILLSBOROUGH-PASCO- 925 AM EDT SUN APR 15 2007 ...STRONG THUNDERSTORMS CONTINUE ACROSS WEST CENTRAL FLORIDA... A LINE OF THUNDERSTORMS...MOVING EAST AT 40 MPH...WILL AFFECT AREAS FROM NEAR THE VILLAGES IN SUMTER COUNTY...TO NEAR DADE CITY...ANNA MARIA ISLAND...BRADENTON...TEMPLE TERRACE...TAMPA...MACDILL AIR FORCE BASE AND LONGBOAT KEY...UNTIL 1015 AM EDT. GUSTY WINDS UP TO 50 MPH MAY CAUSE LOOSE OBJECTS TO BLOW AROUND. SOME DAMAGE TO TREE LIMBS AND WIRES IS POSSIBLE. TORRENTIAL RAINS WILL CAUSE PONDING OF WATER ON ROADS...AND MINOR FLOODING OF POOR DRAINAGE AREAS.
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 4:42 AM EDT | High Surf Advisory | TBW | Pinellas | 35 hr |
| Apr 15, 5:30 AM EDT | Special Marine Warning | TBW | 90 min | |
| Apr 15, 7:14 AM EDT | Special Marine Warning | TBW | 91 min | |
| Apr 15, 8:39 AM EDT | Special Marine Warning | TBW | 51 min | |
| Apr 15, 8:56 AM EDT | Tornado Warning | TBW | Hernando, Pasco | 34 min |
| Apr 15, 9:29 AM EDT | Tornado Warning | TBW | Hernando, Pasco, Sumter | 31 min |
| Apr 15, 9:30 AM EDT | Special Marine Warning | TBW | 60 min | |
| Apr 15, 10:30 AM EDT | Special Marine Warning | TBW | 90 min | |
| Apr 15, 10:45 AM EDT | Severe Thunderstorm Warning | TBW | Polk | 45 min |
| Apr 15, 1:30 PM EDT | Special Marine Warning | TBW | 30 min | |
| Apr 15, 1:56 PM EDT | Red Flag Warning | TBW | DeSoto, Hardee, Highlands, Pinellas, Polk, Sumter | 29 hr |
Nearby
Severe Thunderstorm Warnings in Florida, 2007Every severe thunderstorm warning in 2007
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.