Alert archive / Florida / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 38, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Jul 19, 2000, 4:59 PM EDT for Polk County, Florida. It was in force for 46 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
- Jul 19, 2000, 4:59 PM EDT (20:59 UTC)
- Expired
- Jul 19, 2000, 5:45 PM EDT
- In force
- 46 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Polk County, FL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 19, 5:34 PM EDT | Thunderstorm Wind | Winter Haven, FL | The Polk County Sheriffs Department reported that thunderstorm winds downed several large branches and power lines in Winter Haven. |
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, 9.0 hours before the alert went out and 74 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
- 1847 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 966 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- -21 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 192102 COR SVRTBW FLC105-192145- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTED FOR COUNTY. NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 500 PM EDT WED JUL 19 2000 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... POLK COUNTY. * UNTIL 545 PM EDT. * AT 500 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR WINTER HAVEN OVER HIGHWAY 17. THE STORM WAS DRIFTING SOUTHWESTWARD. * THE SEVERE THUNDERSTORM WILL AFFECT... WINTER HAVEN WHANETA WAVERLY LAKE WALES 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. $$ LAT...LON 2812 8179 2799 8165 2823 8134 2839 8152 77 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 Jul 19, 3:20 PM EDT, 1 hour 39 minutes earlier.
Area forecast discussion, Jul 19, 3:20 PM EDT, 1 hour 39 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 315 AM EDT TUE JUL 18 2000 CURRENTLY... SHOWERS/TSTMS MIGRATING FROM ALONG COAST MAINLY SOUTH OF TAMPA BAY TO MORE NORTH-SOUTH ARRANGEMENT ALONG WEST COAST SEABREEZE. SURFACE WINDS CONTINUE WESTERLY WITH A SEABREEZE DEVELOPING ALONG THE EAST COAST. FORECAST... SEABREEZES MERGE TOWARD THE EAST COAST THIS AFTERNOON AND CONVECTION INTENSIFIES. THAT CONVECTION FADES AWAY AFTER SUNSET. 12Z MODELS SHOW A LESS COHESIVE MOISTURE INSTABILITY PATTERN THAN ON PREVIOUS RUN BUT... BY LATE TODAY NEXT SHORT WAVE AND HIGH PW VALUES UP TO 2.0 DRIFT SOUTHWARD. AS THIS REACHES MORE UNSTABLE CONDTIONS OF THE GULF... CONVECTION IS GENERATED. A BAND OF CONVECTION MOVES SOUTHWARD ALONG THE WEST COAST DURING THE NIGHT ARRIVING IN THE TAMPA BAY AREA BY SUNRISE TOMORROW. BY TOMORROW AFTERNOON... CONVECTION REFOCUSES INLAND TOWARD THE EAST COAST. EXTENDED... TREND FOR SURFACE RIDGE THAT IS SUPPRESSED SOUTH TO SLOWLY MIGRATE NORTH ALTHOUGH THIS MIGRATION IS SLOW AND FA STAYS IN WESTERLY SURFACE FLOW THROUGH EXTENDED PERIOD. MARINE... WESTERLY FLOW AROUND 10 KTS CONTINUES THROUGH MON. WIND SPEEDS EXPECTED TO REMAIN BELOW 15 KTS THROUGH THE PERIOD. .FIRE WEATHER...NO SIGNIFICANT PROBLEMS. CCFTBW TPA TE 078/088 078/091 078 03363 FMY TB 077/091 077/092 076 03252 .TBW...NONE. 03
Nearby
Severe Thunderstorm Warnings in Florida, 2000Every severe thunderstorm warning in 2000
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.