Alert archive / Florida / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 79, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 19, 2001, 5:10 PM EDT for Pinellas County, Florida. It was in force for 35 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
- Jun 19, 2001, 5:10 PM EDT (21:10 UTC)
- Expired
- Jun 19, 2001, 5:45 PM EDT
- In force
- 35 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Pinellas County, FL
The radar
The Tampa radar (KTBW), 40 km from the middle of the area, began a volume at 21:11 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 19, 5:28 PM EDT | Hail 0.75 | St Petersburg, FL | Dime sized hail was reported by a Skywarn Spotter in St. Petersburg. |
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, 9.2 hours before the alert went out and 40 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
- 856 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1008 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- -9 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 192113 SVRTBW FLC103-192145- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 510 PM EDT TUE JUN 19 2001 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... PINELLAS COUNTY IN FLORIDA. * UNTIL 545 PM EDT. * AT 510 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS... FROM 9 MILES SOUTH OF ST. PETERSBURG TO NEAR THE GANDY CAUSEWAY TO JUST SOUTH OF TOWN AND COUNTRY. RADAR INDICATED THE STRONGEST WINDS MOVING ONSHORE THE PINELLAS BAYFRONT FROM GANDY SOUTH TO THE TIERA VERDE AREA...MOVING NORTHWEST AT 15 MPH. * SEVERE THUNDERSTORMS WILL AFFECT... ST. PETERSBURG. GULFPORT. KENNETH CITY. TREASURE ISLAND. MADEIRA BEACH. MOVE INSIDE A STURDY BUILDING. DAMAGING WIND...LARGE HAIL... TORRENTIAL RAIN...AND DEADLY LIGHTNING ARE EXPECTED. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. THIS IS A DANGEROUS STORM! DESTRUCTIVE WIND GUSTS WILL CAUSE LOCALLY MAJOR STRUCTURAL DAMAGE. MOBILE HOMES ARE NOT SAFE! TAKE COVER NOW. $$ LAT...LON 2766 8257 2801 8264 2810 8283 2768 8291 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 Jun 19, 1:26 PM EDT, 3 hours 44 minutes earlier.
Area forecast discussion, Jun 19, 1:26 PM EDT, 3 hours 44 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 126 PM EDT TUE JUN 19 2001 CURRENTLY: GULF SEA BREEZE REMAINING PINNED NEAR THE COAST SO FAR THIS AFTERNOON...A SIGN THAT COASTAL COMMUNITIES SHOULD SEE THE BULK OF THE STRONGER THUNDERSTORMS LATER TODAY. ALSO STARTING TO SEE A FEW SHOWERS FORMING ON THE GULF BREEZE TO THE NORTH OF TAMPA BAY. FORECAST: WITH A RELATIVE DIRTH OF 12Z MODEL DATA...WILL GENERALLY JUST CONTINUE THE CURRENT FORECAST THROUGH ANOTHER DAY. WHAT MODEL DATA WE DO HAVE CONTINUES TO SHOW A PREDOMINANT LOW LEVEL SOUTHEASTERLY FLOW THROUGH THE SHORT TERM WITH PLENTY OF MOISTURE TO FUEL AFTERNOON AND EVENING THUNDERSTORMS. MARINE: OVERALL WINDS AND SEAS REMAINING QUIET BUT AFTERNOON AND EVENING THUNDERSTORMS WILL PROVIDE LOCALLY GUSTY WINDS...FREQUENT LIGHTNING...AND REDUCED VISIBILITIES. EXTENDED: LOOKS LIKE WE WILL HAVE A COUPLE OF DAYS OF SOUTHWESTERLY WINDS REVISIT OVER THE WEEKEND FROM TAMPA BAY NORTH IN RESPONSE TO UPPER TROF DIGGING INTO THE EAST. WE SHOULD GO BACK TO EASTERLY FLOW BY EARLY NEXT WEEK...HOWEVER...AS SURFACE RIDGE TO THE NORTH BRIDGES DOWN THE EAST COAST. STILL ENOUGH MOISTURE AROUND TO MAINTAIN SCATTERED CONVECTION THROUGHOUT THE EXTENDED PERIOD. PRELIM NUMBERS: TPA 92/72/92/72 5555 FMY 92/72/92/72 5555 .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 19, 3:06 PM EDT | Severe Thunderstorm Warning | TBW | Levy | 39 min |
| Jun 19, 4:39 PM EDT | Severe Thunderstorm Warning | TBW | Lee | 51 min |
| Jun 19, 4:55 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough | 50 min |
| Jun 19, 5:46 PM EDT | Severe Thunderstorm Warning | TBW | Hernando | 44 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.