Alert archive / Florida / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 133, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Aug 12, 2001, 6:57 PM EDT for Charlotte County, Florida. It was in force for 33 min. 1 report 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 12, 2001, 6:57 PM EDT (22:57 UTC)
- Expired
- Aug 12, 2001, 7:30 PM EDT
- In force
- 33 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Charlotte County, FL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 12, 7:07 PM EDT | Hail 1.75 | Punta Gorda, FL | Charlotte county emergency management reported golf ball sized hail along Interstate 75 near Airport Road in Punta Gorda. |
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, 11.0 hours before the alert went out and 100 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
- 824 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 1033 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
903 WUUS52 KTBW 122257 SVRTBW FLC015-122330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 657 PM EDT SUN AUG 12 2001 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL CHARLOTTE COUNTY IN FLORIDA. * UNTIL 730 PM EDT. * AT 657 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL...OVER SOUTHERN CHARLOTTE COUNTY...MOVING NORTH AT 10 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... CLEVELAND. SEVERE THUNDERSTORMS CONTAIN WIND GUSTS OF 60 MPH OR HIGHER...AND HAIL THE SIZE OF DIMES OR LARGER. MOVE TO A PLACE OF SAFETY. $$ LAT...LON 2677 8201 2677 8181 2703 8180 2701 8205 33 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 12, 2:50 PM EDT, 4 hours 7 minutes earlier.
Area forecast discussion, Aug 12, 2:50 PM EDT, 4 hours 7 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 250 PM EDT SUN AUG 12 2001 CURRENTLY...DRY MID LEVEL AIR AND SUBSIDENCE IS HELPING TO SUPPRESS CONVECTIVE DEVELOPMENT ACROSS THE FA EARLY THIS AFTERNOON WITH ONLY A FEW SHOWERS NOTED ALONG THE EAST COAST SEA BREEZE AS I WRITE. LOOKS AS THOUGH CONVECTION WILL BE VERY LATE TO START AND MAINLY FOCUSED OVER INTERIOR COASTAL ZONES AND INLAND LOCATIONS WHERE BEST BOUNDARY COLLISIONS TAKES PLACE AND 5 PM PACKAGE WILL REFLECT THIS. SHORT TERM...MODELS IN GOOD AGREEMENT THIS AFTERNOON. ATLANTIC UPPER RIDGE AND ATTENDANT SURFACE RIDGE AXIS ACROSS THE N-CENTRAL PENINSULA WILL HOLD THROUGH MONDAY...THEN DRIFT SOUTH TO THE NEAR THE LAKE BY LATE ON TUESDAY AS AN UPPER TROUGH DEVELOPS ALONG THE EAST COAST WITH AN ATTENDANT FRONTAL BOUNDARY SAGGING SOUTH INTO THE SERN GULF STATES. END RESULT FOR THE NEXT TWO DAYS WILL BE A STATUS-QUO WITH LATE NIGHT THROUGH EARLY AFTERNOON CONVECTION NORTH...AND AFTERNOON AND EVENING ACTIVITY ELSEWHERE. MAV POPS CONTINUE TO LOW THROUGH THE PERIOD...SO WILL FAVOR A BLEND OF FWC/FAN WITH 30-40% DURING THE DAY...AND 20% FOR THE EVENING HOURS. EXTENDED...LITTLE CHANGE EXPECTED ON WEDNESDAY AS SURFACE RIDGE AXIS PERSISTS OVER THE SOUTH-CENTRAL PENINSULA. BEYOND THIS THE ATLANTIC UPPER RIDGE BUILDS WEST FOR THURSDAY AND FRIDAY WITH THE SURFACE RIDGE AXIS ADVANCING NORTH WHICH WILL BRIEFLY TRANSITION THE FA INTO A EAST/SOUTHEASTERLY FLOW REGIME WITH LATE AFTERNOON AND EVENING CONVECTION. BY SATURDAY THOUGH ANOTHER UPSTREAM TROUGH MAY SUPPRESS THE RIDGE BACK TO THE SOUTH AGAIN WITH YET ANOTHER TRANSITION TO SWLY FLOW NORTH...AND WEAK FLOW CENTRAL AND SOUTH. SEEING THAT THESE TRENDS MAY CHANGE AGAIN OVER THE NEXT FIVE DAYS...WILL KEEP CURRENT TIMING AND COVERAGE OF POPS AS IS FOR NOW. MARINE...SFC RIDGE AXIS MEANDERING ABOUT THE PENINSULA DURING THE NEXT FIVE DAYS WILL CONTINUE TO SUPPORT TRANQUIL WIND/SEA STATES WITH AFTERNOON ONSHORE SEA BREEZE COMPONENT DEVELOPING NEAR THE COAST EACH DAY. NO HIGHLIGHTS EXPECTED. THANKS FOR COORD KMLB. PRELIMINARY NUMBERS TPA BB 076/092 076/091 2424 FMY BB 075/093 075/092 3434 .TBW...NONE. MCMICHAEL
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.