Alert archive / Florida / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 20, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 29, 2002, 6:29 PM EDT for Hillsborough 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
- Jun 29, 2002, 6:29 PM EDT (22:29 UTC)
- Expired
- Jun 29, 2002, 7:15 PM EDT
- In force
- 46 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Hillsborough County, FL
The radar
The Tampa radar (KTBW), 23 km from the middle of the area, began a volume at 22:32 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 29, 6:45 PM EDT | Thunderstorm Wind 50 E | Valrico, FL | Downed trees damaged one car and one home. |
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, 10.5 hours before the alert went out and 23 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
- 576 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 880 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -2 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 292229 SVRTBW FLC057-292315- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 630 PM EDT SAT JUN 29 2002 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... HILLSBOROUGH COUNTY IN FLORIDA. * UNTIL 715 PM EDT. * AT 630 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH DAMAGING WINDS...OVER PLANT CITY...MOVING NORTHWEST AT 10 TO 15 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... PLANT CITY. SEFFNER. HILLSBOROUGH RIVER STATE PARK. OTHER STRONG THUNDERSTORMS WERE LOCATED NEAR MANGO AND ALSO SUN CITY. 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 2786 8216 2796 8205 2818 8222 2809 8240 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 29, 3:10 PM EDT, 3 hours 19 minutes earlier.
Area forecast discussion, Jun 29, 3:10 PM EDT, 3 hours 19 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION...COR WORDING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 310 PM EDT SAT JUN 29 2002 WET PATTERN ACROSS THE REGION WILL CONTINUE INTO NEXT WEEK. LIGHT SOUTHEAST BOUNDARY FLOW WILL PERSIST ONE MORE DAY BEFORE BECOMING SOUTHERLY ON SUNDAY NIGHT AS SURFACE HIGH TEMPORARILY RETREATS EAST OF FLORIDA. MOISTURE WILL POOL OVER THE NORTHERN FA INVOF A WEAK U/L LOW. THIS WILL INCREASE AFTERNOON SHOWER AND THUNDERSTORM ACTIVITY NORTH OF TAMPA. MONDAY APPEARS VERY SIMILAR WITH WEAK SOUTHERLY BOUNDARY LAYER FLOW AND DEEP TROPICAL MOISTURE OVER THE REGION. HIGH POPS ACROSS THE AREA WITH HEAVIEST RAINFALL LIKELY NORTH OF TAMPA...WITH TRAINING OF CELLS AND LOCALLY HEAVY RAIN POSSIBLE. SURFACE HIGH WILL BEGIN TO BUILD OVER SOUTH FLORIDA MONDAY NIGHT CAUSING THE BOUNDARY LAYER FLOW TO SHIFT SOUTHWEST. WITH U/L LOW POSITIONED OVER THE NORTHEAST GULF...ALTHOUGH WEAK...DEEP SOUTHWEST FLOW WILL DEVELOP ACROSS THE FA. THIS WILL LEAD TO LATE NIGHT SHOWERS AND THUNDERSTORMS DEVELOPING OVER THE EASTERN GULF OF MEXICO AND SPREADING LOCALLY ONSHORE DURING THE MORNING HOURS. LOCALIZED TRAINING OF CELLS MAY DEVELOP ALONG PORTIONS OF THE COAST WITH HEAVY RAINFALL POSSIBLE. THIS PATTERN WILL PERSIST THROUGH WEDNESDAY. TIMING IS DIFFICULT...BUT IT APPEARS THE U/L LOW AND POSSIBLE WEAK SURFACE LOW WILL BEGIN TO LIFT EAST OF FLORIDA THURSDAY WITH FLOW BECOMING WEST TO NORTHWEST ACROSS THE FA FOR THURSDAY AND FRIDAY. THIS WOULD DECREASE AFTERNOON CONVECTION OVER MUCH OF THE FA WITH THE BEST CHANCE OF THUNDERSTORMS OVER THE INTERIOR. SURFACE HIGH WILL BUILD OVER THE SOUTHEAST U.S. ON SATURDAY WITH DRIER AIR ALOFT ADVECTING OVER MUCH OF THE FA SIGNIFICANTLY LOWERING POPS ACROSS WEST CENTRAL FLORIDA SATURDAY. MARINE...WINDS AND SEAS LESS THAN 15 KNOTS AND SEAS LESS THAN 4 FEET THROUGH THE PERIOD. PRELIM S: BKV 071/089 071/088 3737 TPA 073/089 075/088 4747 GIF 073/091 074/091 3636 SRQ 072/089 074/088 4747 FMY 073/091 074/090 4747= TBW...NONE. OGLESBY
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 3:37 PM EDT | Special Marine Warning | TBW | 83 min | |
| Jun 29, 3:37 PM EDT | Special Marine Warning | TBW | 83 min | |
| Jun 29, 5:43 PM EDT | Severe Thunderstorm Warning | TBW | Manatee | 47 min |
| Jun 29, 6:38 PM EDT | Special Marine Warning | TBW | 52 min | |
| Jun 29, 7:04 PM EDT | Severe Thunderstorm Warning | TBW | Pinellas | 41 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2002Every severe thunderstorm warning in 2002
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.