Alert archive / Florida / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 5, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Apr 11, 2004, 7:19 PM EDT for Highlands County, Florida. It was in force for 26 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
- Apr 11, 2004, 7:19 PM EDT (23:19 UTC)
- Expired
- Apr 11, 2004, 7:45 PM EDT
- In force
- 26 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Counties, with a storm outline in the text
County Highlands 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, 11.3 hours before the alert went out and 111 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1248 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
859 WUUS52 KTBW 112319 SVRTBW FLC055-112345- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 718 PM EDT SUN APR 11 2004 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN HIGHLANDS COUNTY IN FLORIDA. * UNTIL 745 PM EDT * AT 718 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS...OVER CENTRAL HIGHLANDS COUNTY...MOVING NORTHEAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... SEBRING. 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. QUARTER SIZE HAIL IS LIKELY. MOVE INDOORS IMMEDIATELY. REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN RUSKIN. && LAT...LON 2748 8146 2735 8132 2760 8099 2764 8124 $$ 63
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 11, 1:46 PM EDT, 5 hours 33 minutes earlier.
Area forecast discussion, Apr 11, 1:46 PM EDT, 5 hours 33 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 146 PM EDT SUN APR 11 2004 ...SOME MUCH NEEDED RAIN IN STORE... .CURRENTLY...ANVIL CIRRUS OVERSPREADING ENTIRE CWA AT THIS TIME... BUT HAS BEEN THIN ENOUGH SO FAR TO ALLOW PLENTY OF SUNSHINE TO FILTER THROUGH. CONVECTION STILL REMAINS WELL OFFSHORE AND SHOULD NOT EFFECT US THROUGH THE REST OF THE AFTERNOON...ALTHOUGH AN ISOLATED SHOWER/TSTM IS STILL NOT OUT OF THE QUESTION WELL INLAND LATE. && .SHORT TERM (TNGT THRU TUE)...QUESTION IS NOT SO MUCH IF IT WILL RAIN AS IT IS HOW MUCH WILL IT RAIN. VERY DEEP TROF WILL MOVE SLOWLY THROUGH THE LOWER MISSISSIPPI VALLEY INTO THE SOUTHEAST OVER THE NEXT COUPLE OF DAYS. AHEAD OF THE TROF...STRONG UPPER LEVEL DIVERGENCE...GOOD LOW LEVEL JET...AND PLENTY OF MOISTURE WILL ADVECT INTO THE AREA. LOOKS LIKE TWO MAIN ROUNDS OF CONVECTION WILL OCCUR. THE FIRST WITH AN INITIAL DISTURBANCE OVERNIGHT INTO THE FIRST HALF OF MONDAY...THE SECOND WITH A COLD FRONT LATE MONDAY NIGHT INTO TUESDAY. EACH ROUND HAS THE POTENTIAL TO PRODUCE HEAVY RAINS WITH TWO INCH PLUS STORM TOTALS NOT UNCOMMON BY TUESDAY AFTERNOON. WIND FIELDS AND COOLING UPPER LEVELS SUPPORT THE CHANCE FOR ISOLATED SEVERE THUNDERSTORMS WITH EACH ROUND OF CONVECTION...BUT IT LOOKS DIFFICULT TO GET ALL THE INGREDIENTS LINED UP AT THE SAME TIME FOR A SIGNIFICANT OUTBREAK. FOR INSTANCE...LOW LEVEL WIND FIELDS WILL BE MOST CONDUCIVE EARLY MONDAY MORNING...WHILE BEST UPPER LEVEL JET SUPPORT LOOKS TO ARRIVE LATER. && .LONG TERM (TUE NIGHT-SUN)...THE LONGWAVE TROUGH WILL PUSH THROUGH WEDNESDAY. MODELS ARE A LITTLE SLOWER THIS RUN AND WILL SLOW DOWN PROGRESSING SHOWERS THROUGH THE AREA. THE ONLY REAL EFFECT WILL BE TO HOLD ONTO A 20 POP FOR THE FT MYERS AREA WEDNESDAY NIGHT. AFTER THAT THE TROUGH PASSES AND STALLS TO OUR EAST WE GET INTO NORTHERLY FLOW ALOFT. THIS ALLOWS A SURFACE RIDGE TO BUILD OVER THE STATE AND PROGRESS EASTWARD WELL INTO THE ATLANTIC BY THE END OF THE WEEK AND THE WEEKEND. THE NET RESULT WILL BE SEASONALLY COOL (ESPECIALLY AT NIGHT) DRY CONDITIONS. && .MARINE...WINDS WILL INCREASE OVERNIGHT AS A LOW CENTER DEEPENS IN THE CENTRAL GULF OF MEXICO. SCEC CRITERIA MAY BE MET LATE TONIGHT... SO I WILL PUT UP THE HEADLINE. WINDS CONTINUE PERIODICALLY BREEZY... ALTHOUGH I THINK THE BEST WINDS MAY COME WITH THE COLD ADVECTION PATTERN TUESDAY NIGHT AND WEDNESDAY AS HIGH PRESSURE BUILDS INTO THE WESTERN GULF. WINDS AND SEAS SHOULD COME BACK DOWN FOR THE END OF THE WEEK. && .FIRE WEATHER...NO CONCERNS THROUGH TUESDAY WITH LOADS OF MOISTURE AND RAIN. MAY NEED ADVISORIES LATER IN THE WEEK AS THE ATMOSPHERE DRIES OUT AND WINDS INCREASE. && .PRELIMINARY POINT TEMPS/POPS... TPA 070 080 068 074 / 80 70 70 60 FMY 069 081 069 078 / 50 80 70 70 GIF 069 081 067 078 / 80 80 70 60 SRQ 069 079 069 075 / 70 70 70 70 BKV 065 079 063 073 / 90 70 70 50 && .TBW WATCHES/WARNINGS/ADVISORIES... SMALL CRAFT EXERCISE CAUTION BONITA BEACH TO SUWANNEE RIVER OUT TO 60 NM INCLUDING TAMPA BAY. ALSHEIMER/SOBIEN
Hazardous weather outlook, Apr 11, 12:18 PM EDT, 7 hours 1 minute before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 1218 PM EDT SUN APR 11 2004 FLZ039-042-043-048>052-055>057-060>062-065-112217- CHARLOTTE-CITRUS-DE SOTO-HARDEE-HERNANDO-HIGHLANDS-HILLSBOROUGH-LEE- LEVY-MANATEE-PASCO-PINELLAS-POLK-SARASOTA-SUMTER- 1218 PM EDT SUN APR 11 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST FLORIDA. .DAY ONE...TODAY: ...STRONG THUNDERSTORMS POSSIBLE TONIGHT... A LINE OF STRONG TO SEVERE THUNDERSTORMS OVER THE EASTERN GULF OF MEXICO WILL BE MOVING TOWARD FLORIDA THIS AFTERNOON AND SHOULD ARRIVE IN THE NATURE COAST THIS EVENING AND THE REMAINDER OF THE AREA OVERNIGHT. DAMAGING WIND WILL BE THE MAIN THREAT WITH THE LINE OF STRONGER THUNDERSTORMS. TREES...POWER LINES...AND POORLY CONSTRUCTED BUILDINGS WILL BE MOST AT RISK. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA OUTLETS FOR POSSIBLE WATCHES OR WARNINGS. HEAVY RAINS ARE ALSO EXPECTED WITH THE THUNDERSTORMS OVERNIGHT...MAINLY FROM THE TAMPA BAY AREA NORTHWARD. THE RAIN MAY CAUSE MINOR FLOODING OF POOR DRAINAGE AND LOW LYING AREAS. DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY: THE THREAT FOR STRONG THUNDERSTORMS AND HEAVY RAIN WILL CONTINUE THROUGH MONDAY AND MONDAY NIGHT THROUGHOUT THE ENTIRE AREA. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED TONIGHT. && FOR ADDITIONAL WEATHER INFORMATION...CHECK OUR WEB SITE AT HTTP://WWW.SRH.NOAA.GOV/TBW (LOWER CASE)
In the hours before
Special weather statement, Apr 11, 6:48 PM EDT, 31 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 648 PM EDT SUN APR 11 2004 FLZ048-049-051-112330- HERNANDO-HILLSBOROUGH-PASCO- 648 PM EDT SUN APR 11 2004 ...STRONG THUNDERSTORMS WILL AFFECT NORTHERN HILLSBOROUGH... PASCO...AND HERNANDO COUNTIES... THUNDERSTORMS...MOVING NORTHEAST AT 20 MPH...WILL AFFECT ODESSA...LUTZ...MOON LAKE ESTATES AND LAND O LAKES...UNTIL 730 PM EDT. GUSTY WINDS UP TO 40 MPH WILL OCCUR. FREQUENT CLOUD TO GROUND LIGHTNING IS EXPECTED. IF CAUGHT OUTSIDE...CROUCH DOWN IN A LOW SPOT...AWAY FROM TALL OBJECTS. HAIL UP TO ONE HALF INCH IN DIAMETER IS EXPECTED. RAINFALL RATES OF 1 INCH PER HOUR ARE EXPECTED. DAVIS
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 6:56 PM EDT | Special Marine Warning | TBW | 64 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2004Every severe thunderstorm warning in 2004
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.