Alert archive / Florida / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 45, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at May 19, 2003, 5:44 PM EDT for Polk County, Florida. It was in force for 31 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
- May 19, 2003, 5:44 PM EDT (21:44 UTC)
- Expired
- May 19, 2003, 6:15 PM EDT
- In force
- 31 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Counties, with a storm outline in the text
County Polk County, FL
The radar
The Tampa radar (KTBW), 81 km from the middle of the area, began a volume at 21:45 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 nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 9.7 hours before the alert went out and 81 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
- 1772 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 794 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS52 KTBW 192144 SVRTBW FLC105-192215- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 543 PM EDT MON MAY 19 2003 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL POLK COUNTY IN FLORIDA. * UNTIL 615 PM EDT * AT 543 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL...OVER HAINES CITY...MOVING NORTHWEST AT 5 MPH. QUARTER SIZE HAIL IS POSSIBLE. MOVE INDOORS IMMEDIATELY. * THE SEVERE THUNDERSTORM WILL AFFECT... HAINES CITY. WINTER HAVEN. LAKE ALFRED. SEVERE THUNDERSTORMS CONTAIN WIND GUSTS OF 60 MPH OR HIGHER...AND HAIL THE SIZE OF PENNIES OR LARGER. MOVE TO A PLACE OF SAFETY. && LAT...LON 2795 8165 2814 8154 2828 8174 2802 8187 $$ 33
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 May 19, 12:56 PM EDT, 4 hours 48 minutes earlier.
Area forecast discussion, May 19, 12:56 PM EDT, 4 hours 48 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 1256 PM EDT MON MAY 19 2003 THE UPPER LOW EFFECTING OUR WEATHER WILL CONTINUE TO SINK SOUTH TO NEAR THE YUCATAN AND BECOME DIFFUSE. IN ITS WAKE A COMPLEX SYSTEM OF OF A DEEP UPPER LOW NEAR BERMUDA A RIDGE AXIS ALONG THE U.S. EAST COAST AND A WEAK DIGGING TROUGH NEAR THE GREAT LAKES. THE TROUGH OVER THE GREAT LAKES EVENTUALLY DIGS IN ALONG THE EAST COAST AND BECOMES THE DOMINANT FEATURE. FOR THE SHORT TERM WE STAY IN LOW LEVEL EASTERLY FLOW AND A SUMMER LIKE PATTERN. THE UPPER LOW WILL HAVE A DECREASING INFLUENCE ON OUR WEATHER HENCE THE POPS WILL BE DECREASING DAILY THROUGH MIDWEEK. BUT THERE WILL BE ADEQUATE INSTABILITY AND PLENTY OF MOISTURE FOR SUMMER LIKE AFTERNOON CONVECTION. .EXTENDED(THU-MON)...UPPER LOW OVER THE ATLANTIC SLIDES EAST AS FRONTAL SYSTEM LINGERS OVER THE EASTERN SEA BOARD AND THE GULF COAST INTO EARLY FRIDAY...WHEN GFS/MRF FORMS A SURFACE LOW ACROSS THE SOUTHEASTERN STATES AS UPPER TROUGH DROPS INTO THE MID MISS VALLEY AND THEN DEEPENS AS IT MOVES EAST. THE SURFACE LOW MOVES NORTHWARD ALONG THE EAST COAST AS THE FRONT MOVES THROUGH THE STATE AND HIGH PRESSURE BUILDS INTO THE GULF REGION. WITH SOME UNCERTAINTY IN THE MODELS WILL MAINTAIN THE CURRENT TREND IN THE EXTENDED. SCT PCPN INTO FRIDAY AND THEN DECREASING BACK TO AFTERNOON/EVENING TIMING FOR THE WEEKEND AND THEN SOME CLEARING MONDAY. THERE ARE NO MARINE AND OR FIRE WEATHER ISSUES. PRELIMINARY NUMBERS TPA 074/089 073/090 4544 FMY 072/091 071/091 4544 GIF 072/092 071/091 2524 SRQ 074/087 072/088 4544 BKV 069/090 069/090 4544 .TBW...NONE. SOBIEN/RUDE
Hazardous weather outlook, May 19, 5:35 AM EDT, 12 hours 9 minutes before
FLZ039-042-043-048>052-055>057-060>062-065-191530- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 535 AM EDT MON MAY 19 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST FLORIDA. .DAY ONE...TODAY: ...SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING... A WARM AND HUMID AIR MASS OVER FLORIDA WILL BECOME INCREASINGLY UNSTABLE THIS AFTERNOON AS TEMPERATURES RISE TO NEAR 90. LATE DAY SEA BREEZES WILL HELP FORM THUNDERSTORMS...A FEW OF WHICH MAY BECOME SEVERE. THE BEST CHANCES WILL BE BETWEEN 3 PM AND 10 PM. DAMAGING WIND AND LARGE HAIL ARE THE MAIN THREATS WITH ANY STORMS THAT BECOME SEVERE TODAY. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA OUTLETS FOR POSSIBLE WATCHES OR WARNINGS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY: SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED TO OCCUR THROUGH THE WEEK. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING. FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT HTTP://WWW.SRH.NOAA.GOV/TBW
In the hours before
Local storm report, May 19, 3:13 PM EDT, 2 hours 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
313 PM EDT MON MAY 19 2003
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0202 PM LUTZ FL 1.00 INCH HAIL
05/19/03 HILLSBOROUGH REPORTED BY PUBLIC.
BSGLocal storm report, May 19, 3:13 PM EDT, 2 hours 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
313 PM EDT MON MAY 19 2003
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0302 PM LUTZ FL 1.00 INCH HAIL
05/19/03 HILLSBOROUGH REPORTED BY PUBLIC.
...CORRECTED FOR EVENT TIME...
BSGThe office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 2:25 PM EDT | Severe Thunderstorm Warning | TBW | Pinellas | 35 min |
| May 19, 2:45 PM EDT | Tornado Warning | TBW | Pinellas | 30 min |
| May 19, 2:54 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough | 36 min |
| May 19, 3:32 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough | 28 min |
| May 19, 6:02 PM EDT | Severe Thunderstorm Warning | TBW | DeSoto | 28 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; radar from the NEXRAD Level II archive.