Alert archive / Florida / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 37, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Jul 18, 2000, 5:24 PM EDT for Polk County, Florida. It was in force for 36 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
- Jul 18, 2000, 5:24 PM EDT (21:24 UTC)
- Expired
- Jul 18, 2000, 6:00 PM EDT
- In force
- 36 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Polk County, FL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 18, 5:50 PM EDT | Thunderstorm Wind | Frostproof, FL | The Frostproof Police Department reported that thunderstorm winds blew down the scoreboard at a baseball field, damaged the tin roof of a commercial building and downed nine large trees in Frostproof. |
| Jul 18, 5:50 PM EDT | Hail 1.75 | Frostproof, FL | Golfball sized hail was reported in Frostproof by the local police department. |
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 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
- 1909 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 919 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 22 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 182124 SVRTBW FLC105-182200- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 524 PM EDT TUE JUL 18 2000 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL POLK COUNTY. * UNTIL 600 PM EDT. * AT 524 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS...OVER LAKE WALES...MOVING SOUTHEAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... CYPRESS GARDENS BY 525 PM EDT. LAKE WALES BY 535 PM EDT. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. MOVE TO A PLACE OF SAFETY...AN INTERIOR ROOM IN THE LOWEST FLOOR OF YOUR HOUSE OR BUSINESS. $$ LAT...LON 2805 8165 2792 8179 2775 8162 2790 8145 RK 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 18, 3:21 PM EDT, 2 hours 3 minutes earlier.
Area forecast discussion, Jul 18, 3:21 PM EDT, 2 hours 3 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 321 PM EDT TUE JUL 18 2000 CURRENTLY...MESO-SCALE BOUNDARY/SEA BREEZE COLLISIONS RESULTING IN SCATTERED SHOWERS AND THUNDERSTORMS FROM HERNANDO COUNTY NORTH AND OVER MY INTERIOR AND SWRN ZONES EARLY THIS AFTERNOON AS DEPICTED BY 88D RETURNS. AS THE AFTERNOON CONTINUES ONGOING AND ANY ADDITIONAL CONVECTION SHOULD PUSH EAST AND SEWD INTO THE INTERIOR ON A WEST TO NORTHWEST STEERING FLOW...HOWEVER WITH NUMEROUS BOUNDARIES AROUND WILL WORD FOR A LOW EVENING POP MENTION IN MOST ZONES. NELY FLOW ABOVE 50H WILL SPREAD BLOWOFF CLOUDINESS ALONG COASTAL ZONES...SO WILL WORD FOR MOSTLY CLOUDY IN THESE LOCATIONS...AND PARTLY CLOUDY ELSEWHERE. FORECAST...MODELS AGAIN IN RELATIVELY GOOD AGREEMENT THIS AFTERNOON. UPPER TROUGH OFF THE MID ATLANTIC WILL CONTINUE TO LIFT NEWD THRU WED NIGHT...HOWEVER ADDITIONAL SHORT WAVE ENERGY DROPPING SEWD ON EASTERN SIDE OF CENTRAL U.S. UPPER RIDGE WILL KEEP A GENERAL AREA OF TROUGHINESS ALONG THE U.S. EAST COAST THROUGH FRIDAY. MODELS HAVE NOT BEEN HANDLING THE TIMING OF THE INDIVIDUAL VORT LOBES WITHIN THE FLOW ALOFT...SO CONFIDENCE IN ANY ONE MODEL IS LOW. AT THE SURFACE PERSISTENT HIGH PRESSURE ACROSS THE FL STRAITS WILL LIFT SLOWLY NORTH INTO THE SRN PENINSULA THRU EARLY THURSDAY WHERE IT SHOULD TAKE UP RESIDENCE AS A WEAK COLD FRONT MOVES INTO SRN GA/NE FL AND STALLS. POSITION OF THE SURFACE RIDGE AXIS WILL CONTINUE TO PROVIDE A WESTERLY FLOW REGIME AND WILL CONTINUE WITH LATE AND EARLY MORNING COASTAL AND AFTERNOON INTERIOR POP TIMING THROUGH THE PERIOD. WITH VARYING MODEL POP SOLUTIONS WILL KEEP POPS IN GENERAL 30-40% CATEGORY IN MOST ZONES. WESTERLY FLOW WILL AGAIN RESULT IN WARM MUGGY CONDITIONS OVERNIGHT SO WILL AGAIN GO ABOVE MODEL GUIDANCE MINS IN MOST LOCATIONS...WITH BLEND OF GUIDANCE BEING USED FOR MAXS. EXTENDED...FRI-SUN...LATEST MRF RUN RETROGRADES CENTRAL UPPER RIDGE WEST WITH SHARPER LOOKING EAST COAST TROUGH DEVELOPING THROUGH THE PERIOD. LIKE ALL LAST WEEK THE TIMING OF ANY SHORT WAVES ROTATING INTO THE BASE OF THIS NEW TROUGH WILL BE DIFFICULT TO DETERMINE. SURFACE HIGH ACROSS THE S-CENTRAL PENINSULA WILL FAVOR A WEAK TO NON- EXISTENT GRADIENT...SO SEA BREEZE INDUCED CONVECTION LOOKS A GOOD BET ENHANCED BY ANY SHORT WAVES THAT MAY MOVE THROUGH...SO WILL CARRY SCATTERED POP MENTION THROUGHOUT. MARINE...SURFACE RIDGE TO THE SOUTH TO CONTINUE SW-WLY FLOW IN THE 10 TO 15 KNOT RANGE ALL LEGS. NO HIGHLIGHTS EXPECTED. PRELIMINARY NUMBERS TPA BB 080/091 080/092 3424 FMY TB 078/092 078/093 3534 .TBW...NONE. MCMICHAEL
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.