Alert archive / Florida / Tornado Warnings in 1999
Tornado Warning 11, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this tornado warning at May 29, 1999, 6:25 PM EDT for Polk County, Florida. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 29, 1999, 6:25 PM EDT (22:25 UTC)
- Expired
- May 29, 1999, 7:00 PM EDT
- In force
- 35 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Polk County, FL
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 10.4 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
- 436 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 845 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTBW 292225 RRA TORTBW FLC105-292300- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 625 PM EDT SAT MAY 29 1999 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * TORNADO WARNING FOR... SOUTHERN POLK COUNTY IN CENTRAL FLORIDA * UNTIL 700 PM EDT * AT 625 PM...A TORNADO WAS INDICATED BY NATIONAL WEATHER SERVICE DOPPLER RADAR 1 MILE NORTHWEST OF FORT MEADE MOVING SOUTH AT 15 MPH. * SOME LOCATIONS> AFFECTED... ROCKLAND JUNCTION AT 635 PM THIS IS A DANGEROUS SITUATION. PERSONS IN THE PATH OF THE STORM NEED TO TAKE COVER IN A STURDY BUILDING. MOBILE HOMES AND CARS ARE NOT SAFE.
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at May 29, 2:43 PM EDT, 3 hours 42 minutes earlier.
Area forecast discussion, May 29, 2:43 PM EDT, 3 hours 42 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY-RUSKIN FL 243 PM EDT SAT MAY 29 1999 .CURRENTLY...FA QUIET WITH SOME CLOUDINESS STREAMING EAST. WCSB ALONG COAST ATTM. HOWEVER...STLT & RADAR INDICATES FORMING TSTM/RW FORMING NEAR BKV AND ALSO BEYOND OUR SOUTHERN BORDER. .DISCUSSION...GENERALLY FAVOR AVN/NGM SOLUTION OF H5 RIDGE BUILDING IN OVER FL WITH WEAK SHORT WAVE TROF MOVING INTO CENTRAL GULF COAST BY MONDAY. SFC HIGH OVER MID-ATLANTIC STATES WILL RIDGE EAST WITH AXIS OFF THE CAROLINA COAST AS EASTERLY FLOW BUILDS IN OVER THE STATE BY SUNDAY...KEEPING WCSB CLOSER TO THE COAST SUN. MOISTURE/INSTABILITY TO REMAIN SUFFICIENT FOR ANOTHER ROUND OF TSTMS SUNDAY ALTHOUGH MORE LIKELY COASTAL AREAS. WOULD GO WITH NGM TEMPS/POP OVER AVN. FOG/HAZE LESS LIKELY IN MORNING WITH INCREASING LOW LEVEL FLOW. THANKS FOR COORD CALL MIA. TPA TB 68/89/68/89 09252 FMY TB 70/90/70/90 09252 RKR
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 3:14 PM EDT | Severe Thunderstorm Warning | TBW | Hernando | 31 min |
| May 29, 5:08 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough | 27 min |
Nearby
Tornado Warnings in Florida, 1999Every tornado warning in 1999Tornadoes in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.