Alert archive / Florida / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 82, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 20, 2001, 4:00 PM EDT for Sarasota County, Florida. It was in force for 45 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
- Jun 20, 2001, 4:00 PM EDT (20:00 UTC)
- Expired
- Jun 20, 2001, 4:45 PM EDT
- In force
- 45 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Sarasota County, FL
The radar
The Tampa radar (KTBW), 58 km from the middle of the area, began a volume at 20:03 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 |
|---|---|---|---|
| Jun 20, 4:25 PM EDT | Hail 0.75 | Nokomis, FL | Dime sized hail was reported by Sarasota county fire & rescue along Jackson Road in Nokomis. |
| Jun 20, 4:35 PM EDT | Tornado F0 | Laurel, FL | The public reported, through WWSB-TV (ABC) of Sarasota, a small tornado that briefly touched down over a sparsely populated, partially wooded area, near the intersection of Interstate 75 and State Road 681, two miles northeast of Laurel in western Sarasota cou |
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, 8.0 hours before the alert went out and 58 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
- 636 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1062 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -10 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 202000
SVRTBW
FLC115-202045-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
400 PM EDT WED JUN 20 2001
THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SARASOTA COUNTY IN FLORIDA.
* UNTIL 445 PM EDT.
* AT 400 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS...8 MILES
NORTHWEST OF NORTH PORT...MOVING NORTHWEST AT 30 MPH.
* THE SEVERE THUNDERSTORM WILL AFFECT...
WARM MINERAL SPRINGS.
MYAKKA RIVER STATE PARK.
BEE RIDGE.
FRUITVILLE.
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 2697 8232 2705 8227 2704 8212 2721 8226
2733 8230 2735 8253
25
NNNNWhat 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 Jun 20, 1:41 PM EDT, 2 hours 19 minutes earlier.
Area forecast discussion, Jun 20, 1:41 PM EDT, 2 hours 19 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 141 PM EDT WED JUN 20 2001 CURRENTLY: SLOWER START TO CONVECTION AS PLANNED. EXCEPT FOR A COUPLE OF THUNDERSHOWERS IN DESOTO COUNTY ALL THINGS ARE QUIET SO FAR. LATE AFTERNOON AND EVENING BOUNDARY COLLISION SHOULD LIGHT THINGS UP...HOWEVER. FORECAST: 12Z MODELS STILL SUPPORTING THE SAME GENERAL TREND THAT HAS BEEN ADVERTISED. THURSDAY WILL BE A TRANSITION DAY AS THE SURFACE RIDGE SLIDES INTO THE SOUTH CENTRAL FA BY LATE IN THE DAY. CONVECTION WILL BE A LITTLE EARLIER NORTH OF TAMPA BAY THURSDAY WITH SOME MORNING ACTIVITY POSSIBLE COMING IN OFF THE GULF. CONVECTION WILL STILL GENERALLY BE IN THE AFTERNOON ALONG THE SOUTHWEST COAST CLOSER TO THE RIDGE AXIS. BY FRIDAY AFTERNOON RIDGE WILL HAVE MOVED SOUTH OF THE AREA AS UPPER LEVEL TROF DEEPENS OVER THE EASTERN U.S. AND A WEAK COLD FRONT STARTS MOVING INTO THE PANHANDLE. THIS WILL GIVE SOUTHWESTERLY FLOW TO ALL AREAS LATER FRIDAY WITH THE BEST CHANCE FOR AFTERNOON CONVECTION OVER THE INTERIOR PORTIONS OF THE CWA. CLIMO TEMPS EXPECTED THURSDAY...THEN WARMER NIGHTS ALONG THE COAST BY FRIDAY WITH THE ONSHORE FLOW. PLENTY OF MOISTURE TO SUPPORT SCATTERED THUNDERSTORMS. MARINE: NO HEADLINES NEEDED. WINDS WILL SHIFT TO MORE SOUTHWESTERLY BY FRIDAY AND CONTINUE INTO THE WEEKEND. EXTENDED: SOUTHWESTERLY LOW LEVEL FLOW EXPECTED TO CONTINUE THROUGH SUNDAY...THEN SHIFT BACK TO SOUTHEASTERLY BY EARLY NEXT WEEK AS SURFACE RIDGE SLIDES BACK NORTHWARD. AVN SHOWS A PRETTY STRONG VORT MAX FOR THIS TIME OF YEAR ROUNDING THE UPPER TROF AND PASSING OVERHEAD ON SATURDAY...WHICH SUPPORTS NUMEROUS THUNDERSTORMS IN FORECAST. PRELIM NUMBERS: TPA 73/92/75/91 4545 FMY 73/92/73/92 4545 .TBW...NONE. ALSHEIMER
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 3:53 PM EDT | Severe Thunderstorm Warning | TBW | Charlotte | 37 min |
| Jun 20, 4:23 PM EDT | Tornado Warning | TBW | Sarasota | 37 min |
| Jun 20, 5:08 PM EDT | Severe Thunderstorm Warning | TBW | Lee | 37 min |
| Jun 20, 5:25 PM EDT | Tornado Warning | TBW | Manatee | 35 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.