Alert archive / Florida / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 124, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Aug 9, 2001, 5:24 PM EDT for Manatee County, Sarasota County, Florida. It was in force for 51 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 9, 2001, 5:24 PM EDT (21:24 UTC)
- Expired
- Aug 9, 2001, 6:15 PM EDT
- In force
- 51 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
Counties Manatee County, FL, Sarasota County, FL
The radar
The Tampa radar (KTBW), 42 km from the middle of the area, began a volume at 21:27 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 9, 5:26 PM EDT | Hail 0.75 | Sarasota, FL | Dime sized hail was reported at the Sarasota-Bradenton International Airport. |
| Aug 9, 5:26 PM EDT | Hail 0.75 | Tallevast, FL | Dime sized hail was reported by the public in Tellavast. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 9.4 hours before the alert went out and 42 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
- 2212 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 719 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
271 WUUS52 KTBW 092125 SVRTBW FLC081-115-092215- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 524 PM EDT THU AUG 9 2001 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN MANATEE COUNTY IN FLORIDA. NORTHWESTERN SARASOTA COUNTY IN FLORIDA. * UNTIL 615 PM EDT. * AT 524 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS...OVER SARASOTA...MOVING NORTHWEST AT 5 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... WHITFIELD. BAYSHORE GARDENS. LONGBOAT KEY. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. DO NOT USE ELECTRICAL APPLIANCES OR TELEPHONES. $$ LAT...LON 2728 8256 2742 8244 2762 8267 2743 8284 15 NNNN
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 Aug 9, 2:09 PM EDT, 3 hours 15 minutes earlier.
Area forecast discussion, Aug 9, 2:09 PM EDT, 3 hours 15 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 209 PM EDT THU AUG 9 2001 CURRENTLY...VISIBLE SATELLITE LOOP DEPICTS WELL DEFINED SEA BREEZE BOUNDARIES ALONG BOTH COASTS EARLY THIS AFTERNOON. 88D RETURNS ALREADY INDICATING A GOOD DEAL OF CONVECTION DEVELOPING ON THEM AND IT LOOKS LIKE ITS GOING TO BE RATHER ACTIVE THE REST OF THE AFTERNOON AND EVENING HOURS AS BOUNDARY COLLISIONS TAKE PLACE. WITH THIS IN MIND PLAN TO CARRY SCATTERED EVENING POPS (30-40% RANGE) ACROSS THE BOARD IN THE 5 PM PACKAGE. SHORT TERM...MODELS CONTINUE TO BE IN GOOD AGREEMENT WITH SYNOPTIC SCALE FEATURES THIS CYCLE AND PROG LEFTOVER SHORT WAVE ENERGY (REMNANTS OF BARRY) NOW OVER THE LOWER TN VALLEY SEWD INTO SOUTH CENTRAL GA DURING THE NEXT 48 HOURS AS WEAK UPPER LEVEL TROUGHINESS DEVELOPS OVER THE STATE. AS THIS OCCURS THE SURFACE HIGH PRESSURE RIDGE NOW OVER THE N-CENTRAL PENINSULA WILL SAG SOUTH TO AROUND THE LAKE OVER THE WEEKEND...PROVIDING MY NORTHERN FA WITH A SW-WLY FLOW AND A LIGHT AND VARIABLE FLOW CENTRAL AND SOUTH. WITH LITTLE CHANGE IN MOISTURE EXPECTED...SCATTERED SEA BREEZE DRIVEN CONVECTION WILL CONTINUE TO BE THE RULE EACH DAY AND WILL ADVERTISE BETWEEN 30-50% POPS IN MOST ZONES. GUIDANCE TEMPERATURES CONTINUE VERY CLOSE...SO A BLEND WILL BE USED. EXTENDED...LITTLE CHANGE FROM PREVIOUS 24 HOURS. SURFACE RIDGE PROGD TO MEANDER ABOUT THE NORTH CENTRAL PENINSULA INTO EARLY NEXT WEEK AS SERIES OF TROPICAL WAVES PASS BY TO THE SOUTH. WITH MODEL X-SECTIONS CONTINUING TO ADVERTISE ABUNDANT MOISTURE...DAILY AFTERNOON AND EVENING SEA BREEZE DRIVEN CONVECTION WILL RULE AND WILL LEAVE SCATTERED POP MENTION AS IS. LITTLE TEMPERATURE CHANGES EXPECTED. MARINE...TRANQUIL WIND/SEA STATES TO CONTINUE IN THE NEAR AND LONG TERM AS WEAK HIGH PRESSURE PERSISTS OVER THE COASTAL WATERS WITH DAILY AFTERNOON SEA BREEZES. NO HIGHLIGHTS EXPECTED. PRELIMINARY NUMBERS TPA BB 077/092 076/091 3435 FMY BB 076/092 075/092 3434 .TBW...NONE. MCMICHAEL
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 1:54 PM EDT | Severe Thunderstorm Warning | TBW | Polk | 36 min |
| Aug 9, 2:32 PM EDT | Severe Thunderstorm Warning | TBW | Polk | 43 min |
| Aug 9, 3:24 PM EDT | Severe Thunderstorm Warning | TBW | Polk | 36 min |
| Aug 9, 3:28 PM EDT | Severe Thunderstorm Warning | TBW | Hardee | 32 min |
| Aug 9, 3:36 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough | 39 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2001Every severe thunderstorm warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.