Alert archive / Florida / Severe Thunderstorm Warnings in 2005
Severe Thunderstorm Warning 4, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Mar 23, 2005, 8:40 AM EST for Hillsborough County, Florida. It was in force for 37 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
- Mar 23, 2005, 8:40 AM EST (13:40 UTC)
- Expired
- Mar 23, 2005, 9:17 AM EST
- In force
- 37 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Counties, with a storm outline in the text
County Hillsborough County, FL
The radar
The Tampa radar (KTBW), 12 km from the middle of the area, began a volume at 13:41 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.
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 23, 4:50 AM EST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 1.7 hours before the alert went out and 12 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
- 1869 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 606 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 4.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS52 KTBW 231341 SVRTBW FLC057-231415- /O.NEW.KTBW.SV.W.0004.050323T1340Z-050323T1415Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 840 AM EST WED MAR 23 2005 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN HILLSBOROUGH COUNTY IN FLORIDA. * UNTIL 915 AM EST * AT 840 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH DAMAGING WINDS...OVER LOWER TAMPA BAY... MOVING NORTHEAST AT 40 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... RUSKIN. APOLLO BEACH. SEVERE THUNDERSTORMS CONTAIN WIND GUSTS OF 60 MPH OR HIGHER...AND HAIL THE SIZE OF PENNIES OR LARGER. MOVE TO A PLACE OF SAFETY. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER... SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 2769 8267 2760 8263 2769 8227 2787 8236 $$ 69
2 follow-up statements
000 WWUS52 KTBW 231353 SVSTBW SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 853 AM EST WED MAR 23 2005 FLC057-231415- /O.CON.KTBW.SV.W.0004.000000T0000Z-050323T1415Z/ HILLSBOROUGH- 853 AM EST WED MAR 23 2005 ...A SEVERE THUNDERSTORM WARNING CONTINUES FOR SOUTHERN HILLSBOROUGH COUNTY UNTIL 915 AM EST... AT 850 AM EST...THE BUOY LOCATED JUST NORTHEAST OF THE SUNSHINE SKYWAY REPORTED A WIND GUSTS OF 60 MPH. DOPPLER RADAR SHOWED THE SEVERE THUNDERSTORM MOVING NORTHEAST AT 40 MPH. THE SEVERE THUNDERSTORM IS ALSO CAPABLE OF PRODUCING... 60 MPH WIND GUSTS. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER... SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 2769 8267 2760 8263 2769 8227 2787 8236 $$ 69
000 WWUS52 KTBW 231417 SVSTBW SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 916 AM EST WED MAR 23 2005 FLC057-231426- /O.EXP.KTBW.SV.W.0004.000000T0000Z-050323T1415Z/ HILLSBOROUGH- 916 AM EST WED MAR 23 2005 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN HILLSBOROUGH COUNTY EXPIRED AT 915 AM EST... AT 916 AM EST...NATIONAL WEATHER SERVICE RADAR INDICATED THE THUNDERSTORM HAD WEAKENED AND WAS NO LONGER SEVERE...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE. DOPPLER RADAR INDICATED THAT HEAVY RAIN AND GUSTY WINDS WERE STILL POSSIBLE FROM THE THUNDERSTORM. A TORNADO WATCH REMAINS IN EFFECT UNTIL 11 AM. && LAT...LON 2769 8267 2760 8263 2769 8227 2787 8236 $$ 69
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 Mar 23, 5:12 AM EST, 3 hours 28 minutes earlier.
Area forecast discussion, Mar 23, 5:12 AM EST, 3 hours 28 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 512 AM EST WED MAR 23 2005 WILL BE UPDATING ZONES AND COASTAL MARINE FORECASTS SHORTLY TO ACCOUNT FOR NEWLY ISSUED TORNADO WATCH BOX #75 VALID UNTIL 11 AM EST. PREVIOUS FORECAST BELOW. .SHORT TERM (TODAY - FRI)...GFS AND NAM ARE SIMILAR WITH HANDLING OF SYNOPTIC SCALE FEATURES THIS MORNING...BUT THE GFS SEEMS TO BE HANDLING THE PRE-FRONTAL SQUALL LINE A BIT BETTER THAN THE NAM WITH RESPECT TO 88D RETURN...SO WILL FAVOR. DEEP UPPER LOW AND ATTENDANT SURFACE FEATURE OVER THE TN/OH VALLEYS THIS MORNING WILL CONTINUE TO LIFT NEWD TOWARD THE NERN STATES THIS AFTERNOON AND TONIGHT WITH A TRAILING COLD FRONT MOVING THROUGH THE FORECAST AREA DURING THE DAY THEN CLEARING THE REGION BY EARLY THIS EVENING. ONGOING PRE-FRONTAL SQUALL LINE NOW EXTENDING FROM CEDAR KEY SWWD OVER THE GULF WILL CONTINUE TO MOVE EAST SOUTHEASTWARD THE REST OF THE MORNING... AFFECTING THE NATURE COAST THE REST OF THE PRE-DAWN HOURS...THEN FROM THE TAMPA BAY AREA AND POINTS SOUTH TOWARD SUNRISE THROUGH THE AFTERNOON. MOIST UNSTABLE AIR MASS WITH MODEST MID LEVEL WIND FLOW AND COLD MID LEVEL TEMPS (-13C AT 50H) LIKELY TO SUPPORT SOME STRONG TO POSSIBLY SEVERE STORMS WITHIN THE SQUALL LINE THROUGH THE MORNING AND EARLY AFTERNOON WITH THE PRIMARY HAZARDS BEING DAMAGING WINDS AND HAIL. BY LATE THIS AFTERNOON UPPER SUPPORT AND ATTENDANT WIND FIELDS WILL LIFT OUT TO THE NE WITH DIMINISHING SEVERE WEATHER THREAT AND POPS EXPECTED FROM NORTH TO SOUTH. AS FOR POPS WILL ADVERTISE 60% FROM THE NATURE COAST NORTH...AND 50% ACROSS CENTRAL AND SOUTHERN ZONES. TONIGHT SOME LINGERING SHOWERS WILL AFFECT SOUTHERN MOST ZONES EARLY IN THE EVENING THEN THEY WILL END AS DRIER AND SLIGHTLY COOLER AIR MASS FILTERS INTO THE REGION FROM THE NORTH IN THE WAKE OF THE COLD FRONT. DECREASING CLOUDS AND DRIER AIR WILL SUPPORT COOLER TEMPS WITH READINGS FALLING INTO THE LOWER AND MID 50S FAR NORTH...AND LOWER TO MID 60S CENTRAL AND SOUTH. ON THURSDAY WEAK HIGH PRESSURE AND DRY AIR MASS WILL SUPPORT PARTLY TO MOSTLY SUNNY SKIES WITH TEMPERATURES REBOUNDING INTO THE 70S NORTH AND CENTRAL AND 80 FAR SOUTH. THURSDAY NIGHT INTO FRIDAY THE HIGH WILL MOVE EASTWARD INTO THE ATLANTIC. RETURN FLOW AROUND IT WILL INCREASE MOISTURE ACROSS THE FORECAST AREA WITH PERHAPS SOME ISOLATED SHOWERS OR A FEW TSTMS DEVELOPING DURING FRIDAY AFTERNOON AS HEATING AND INSTABILITY INCREASES ACROSS THE FORECAST AREA. WILL KEEP 20% POP MENTION IN PLACE AND WILL ADD ISOLATED TSTM MENTION INTO THE GRIDS. TEMPS ON FRIDAY WILL AGAIN BE WARM WITH READINGS CLIMBING INTO THE LOWER AND MIDDLE 80S FROM NORTH TO SOUTH UNDER A SOUTH TO SOUTHWESTERLY WIND FLOW. .LONG TERM (FRI NGT - TUE)...SURFACE RIDGE SHOULD EXTEND FROM THE ATLANTIC...EASTWARD TO THE FLORIDA PENINSULA THROUGH SATURDAY WHILE A FRONTAL BOUNDARY REMAINS STATIONARY JUST NORTH OF THE FLORIDA/GEORGIA BORDER. BEST CHANCES FOR SHOWERS WOULD BE CLOSEST TO FRONTAL BOUNDARY...SO WILL CONTINUE TO SHOW 20 POPS THERE WHILE REST OF FORECAST AREA REMAINS IN SILENT 10 POPS FOR POSSIBILITY OF VERY ISOLATED SEA BREEZE/AIR MASS TYPE SHOWERS. HUGE MODEL DIFFERENCE COME INTO PLAY ON SUNDAY AS GFS SUGGEST A STRONG LOW WILL MOVE BE MOVING NORTHEAST TOWARD OHIO WHILE THE DGEX HAS A LOW GETTING ORGANIZED ALONG THE GULF COAST NEAR LOUISIANA. NEEDLESS TO SAY...THESE DIFFERENCES HAVE A BIG IMPACT ON WHEN AND WHERE SHOWERS AND THUNDERSTORMS WILL OCCUR WITH THE ASSOCIATED FRONTAL BOUNDARY. FOR NOW...WILL LEAN CLOSER TO GFS SINCE THE TIMING OF THE COLD FRONT IS VERY CLOSE TO WHAT WAS ALREADY IN THE GRIDS. THIS WILL BRING THE FRONT AND ASSOCIATED SHOWERS AND THUNDERSTORMS INTO OUR NORTHERN ZONES LATER SUNDAY EVENING...THEN INTO THE REMAINDER OF THE AREA ON MONDAY. THE DGEX IS SLOWER...WITH SHOWERS AND STORMS NOT ARRIVING IN THE NORTH UNTIL AFTER SUNRISE MONDAY AND THEN SPREADING SOUTHEAST ACROSS THE STATE THROUGH MONDAY EVENING. BECAUSE OF TIMING DIFFERENCES AND THE GREAT AMOUNT OF UNCERTAINTY AT THIS TIME...I WILL KEEP SOME SHOWERS AND THUNDERSTORMS IN THE FORECAST FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING...WITH THE BEST CHANCES DURING THE DAY ON MONDAY. EITHER WAY...THE FRONT APPEARS TO HAVE ENOUGH GAS TO PUSH ENTIRELY THROUGH THE STATE BY TUESDAY MORNING...SO DECREASING CLOUDS WITH PERHAPS A FEW LINGERING SHOWERS IN THE SOUTH WITH A COOLER AND DRIER AIRMASS IN ITS WAKE. && .MARINE...PRE-FRONTAL SOUTHWESTERLY WIND FLOW IN THE 15-20 KNOT RANGE WITH SEAS IN THE 4-5 FOOT RANGE WILL CONTINUE OVER THE COASTAL WATERS THIS MORNING INTO EARLY THIS AFTERNOON WITH THE FLOW SHIFTING INTO THE WEST AND NORTHWEST AS THE COLD FRONT MOVES THROUGH DURING THE AFTERNOON. GIVEN CURRENT WIND/SEAS TRENDS AND THE POSSIBILITY OF STRONGER WIND GUSTS NEAR TSTMS WILL MAINTAIN EXERCISE CAUTION FLAGS ALL WATERS IN THE 430 AM PACKAGE. WINDS/SEAS WILL DECREASE LATER THIS AFTERNOON AND TONIGHT IN THE WAKE OF THE FRONT WITH NO ADDITIONAL HIGHLIGHTS EXPECTED THROUGH THE END OF THE WEEK AND INTO THE UPCOMING WEEKEND. && .FIRE WEATHER...HIGH MOISTURE LEVELS AND RAIN CHANCES WILL PRECLUDE ANY HIGHLIGHTS TODAY. ON THURSDAY DRIER AIR COMBINED WITH TEMPS CLIMBING INTO THE 70S MAY RESULT IN ONE OR TWO HOURS OF RHS 35% OVER INTERIOR LEVY AND NORTHERN SUMTER COUNTIES...BUT NO RED FLAG CONDITIONS ARE EXPECTED. ON FRIDAY RETURN FLOW WILL AGAIN INCREASE MOISTURE LEVEL ONCE AGAIN WITH NO HIGHLIGHTS ANTICIPATED. && .PRELIMINARY POINT TEMPS/POPS... TPA 78 61 78 65/ 50 00 00 00 FMY 83 66 84 65/ 50 20 00 00 GIF 81 60 82 64/ 50 00 00 00 SRQ 78 62 78 65/ 50 00 00 00 BKV 78 53 79 58/ 60 00 00 00 && .TBW WATCHES/WARNINGS/ADVISORIES... SMALL CRAFT EXERCISE CAUTION TODAY BONITA BEACH TO SUWANNEE RIVER OUT 60 NM...INCLUDING TAMPA BAY. TORNADO WATCH UNTIL 11 AM EST FOR CITRUS...SUMTER...PASCO...PINELLAS PASCO...HILLSBOROUGH...MANATEE...SARASOTA...POLK...AND HARDEE COUNTIES AND THE ADJACENT COASTAL WATERS FROM ENGLEWOOD TO SUWANNEE RIVER OUT 20 NM. && SHORT TERM...MCMICHAEL LONG TERM....JILLSON
Hazardous weather outlook, Mar 23, 5:46 AM EST, 2 hours 54 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 546 AM EST WED MAR 23 2005 FLZ039-042-043-048>052-055>057-060>062-065-231600- CHARLOTTE-CITRUS-DE SOTO-HARDEE-HERNANDO-HIGHLANDS-HILLSBOROUGH-LEE- LEVY-MANATEE-PASCO-PINELLAS-POLK-SARASOTA-SUMTER- 546 AM EST WED MAR 23 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST FLORIDA. .DAY ONE...TODAY: A MOIST AND UNSTABLE AIR MASS AHEAD OF AN APPROACHING COLD FRONT WILL SUPPORT SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS WEST CENTRAL AND SOUTHWEST FLORIDA TODAY. WITH COLD TEMPERATURES IN THE MID LEVELS OF THE ATMOSPHERE AND MODEST WINDS THROUGH A DEEP LAYER OF THE ATMOSPHERE SUPPORTING GOOD SHEAR...SOME OF THE THUNDERSTORMS MAY BECOME STRONG OR SEVERE WITH DAMAGING WINDS... LARGE HAIL... AND BRIEF TORNADOES. IN ADDITION LOCALLY HEAVY RAINS AND FREQUENT CLOUD TO GROUND LIGHTNING WILL ACCOMPANY THE STORMS. IN ADDITION TO THE THUNDERSTORMS WINDS IN THE 15-25 KNOT RANGE WITH SEAS OF 3-5 FEET WILL MAKE FOR ROUGH BOATING OVER THE ADJACENT GULF WATERS TODAY...AND SMALL CRAFT OPERATORS SHOULD EXERCISE CAUTION. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA OUTLETS FOR POSSIBLE WATCHES OR WARNINGS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY: NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS MORNING. && FOR ADDITIONAL WEATHER INFORMATION...CHECK OUR WEB SITE AT HTTP://WWW.SRH.NOAA.GOV/TBW (LOWER CASE) JCM
In the hours before
Special weather statement, Mar 23, 3:09 AM EST, 5 hours 31 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 309 AM EST WED MAR 23 2005 FLZ042-230830- CITRUS- 309 AM EST WED MAR 23 2005 ...STRONG THUNDERSTORMS WILL AFFECT CENTRAL AND NORTHERN CITRUS COUNTY... STRONG THUNDERSTORMS...MOVING NORTHEAST AT 30 MPH...WILL AFFECT HOMOSASSA SPRING...CRYSTAL RIVER...CITRUS SPRINGS...AND BEVERLY HILLS...UNTIL 330 AM EST. GUSTY WINDS UP TO 40 MPH WILL BE POSSIBLE. FREQUENT CLOUD TO GROUND LIGHTNING IS EXPECTED. IF CAUGHT OUTSIDE...CROUCH DOWN IN A LOW SPOT...AWAY FROM TALL OBJECTS. TORRENTIAL RAINS WILL CAUSE PONDING OF WATER ON ROADS...AND MINOR FLOODING OF POOR DRAINAGE AREAS. JCM
Special weather statement, Mar 23, 5:20 AM EST, 3 hours 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 520 AM EST WED MAR 23 2005 FLZ042-043-048>052-055-056-060-GMZ830-850-853-231600- CITRUS-HARDEE-HERNANDO-HILLSBOROUGH-MANATEE-PASCO-PINELLAS-POLK- SARASOTA-SUMTER- 520 AM EST WED MAR 23 2005 ...TORNADO WATCH NUMBER 75 IS IN EFFECT UNTIL 1100 AM EST... THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH FOR PASCO... SUMTER...CITRUS...HILLSBOROUGH...SARASOTA...HERNANDO...POLK... HARDEE...PINELLAS AND MANATEE COUNTIES AND THE ADJACENT NEAR SHORE COASTAL WATERS FROM ENGLEWOOD TO SUWANNEE RIVER OUT 20NM. A WARM UNSTABLE AIR MASS AHEAD OF A COLD FRONT...COMBINED WITH AN UPPER AIR DISTURBANCE ...WILL INCREASE THE THREAT OF STRONG TO SEVERE THUNDERSTORMS WITHIN THE WATCH AREA THROUGH LATE THIS MORNING. THE MAIN THREAT WITH THESE THUNDERSTORMS WILL BE DAMAGING WIND GUSTS...LARGE HAIL...FREQUENT LIGHTNING...AND TORRENTIAL DOWNPOURS. IN ADDITION...THE COMBINATION OF INSTABILITY AND IMPRESSIVE SHEAR WILL ALLOW FOR ISOLATED TORNADIC ACTIVITY. IF THREATENING WEATHER APPROACHES YOUR LOCATION MOVE INDOORS IMMEDIATELY. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA OUTLETS FOR UPDATES. && FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT HTTP://WWW.SRH.NOAA.GOV/TBW (LOWER CASE) JCM
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 4:59 AM EST | Special Marine Warning | TBW | 61 min | |
| Mar 23, 5:39 AM EST | Tornado Warning | TBW | Hernando, Pasco | 25 min |
| Mar 23, 8:31 AM EST | Special Marine Warning | TBW | 29 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2005Every severe thunderstorm warning in 2005
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.