Alert archive / Florida / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 25, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Jul 13, 2002, 9:55 AM EDT for Polk County, Florida. It was in force for 50 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 13, 2002, 9:55 AM EDT (13:55 UTC)
- Expired
- Jul 13, 2002, 10:45 AM EDT
- In force
- 50 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Polk County, FL
The radar
The Tampa radar (KTBW), 74 km from the middle of the area, began a volume at 13:58 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 |
|---|---|---|---|
| Jul 13, 10:33 AM EDT | Thunderstorm Wind 60 E | Lake Wales, FL |
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, 1.9 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
- 655 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 758 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 178 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
999 WUUS52 KTBW 131355 SVRTBW FLC105-131445- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 955 AM EDT SAT JUL 13 2002 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHWESTERN POLK COUNTY IN FLORIDA. * UNTIL 1045 AM EDT. * AT 955 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH DAMAGING WINDS...20 MILES SOUTHWEST OF BARTOW...MOVING NORTHEAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... FORT MEADE. BARTOW. 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. 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 2764 8210 2753 8196 2781 8160 2797 8179
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 13, 9:18 AM EDT, 37 minutes earlier.
Area forecast discussion, Jul 13, 9:18 AM EDT, 37 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 918 AM EDT SAT JUL 13 2002 MORNING SOUNDING SHOWS PWS AT 2.14 INCHES...GIVING A DARN GOOD REASON FOR THE WIDESPREAD RAIN THIS MORNING. EXPECT THE RAIN TO CONTINUE FOR A FEW HOURS MORE CENTRAL AND NORTH COASTAL...AND DEVELOP OVER THE INTERIOR AND SOUTH WHERE IT HAS NOT RAINED YET. RAISED POPS ON MORNING UPDATE. GETTING GOOD GUSTS WITH THE SHOWERS... WHICH IS NOT SURPRISING SINCE SOUNDING SHOWS 30 KNOTS OFF THE SURFACE. MARINE: TIDES RUNNING A FOOT OR MORE ABOVE NORMAL FROM THE TAMPA BAY AREA NORTH AS CONNECTIVELY INDUCED GUSTY SSW WINDS HAVE RAISED THE NEAR SHORE WATER LEVELS. AS THE CONVECTION MOVES INLAND...THE WINDS SHOULD DIE DOWN AND THE WATER LEVELS SHOULD SLOWLY COME BACK DOWN. MAY ISSUE ANOTHER MWS AROUND NOON IF THE WATERS LEVELS ARE STILL UP...BECAUSE ASTRONOMICAL TIDES START RISING AGAIN THIS AFTERNOON. WHILE IT IS GUSTY AND ROUGH AT TIMES...THE SUSTAINED WINDS AWAY FROM THE CONVECTION ARE BELOW ANY HIGHLITE CRITERIA. MAY BEEF UP THE WIND GUST WORDING...BUT SEE NO REASON TO PUT UP FLAGS AS SUSTAINED WINDS AND SEAS ARE NOT SUPPORTIVE (ONLY 3.6 FOOT SEAS AT BUOY 42036 WITH 10 KNOTS SUSTAINED). .TBW...NONE. ALSHEIMER
In the hours before
Special weather statement, Jul 13, 5:30 AM EDT, 4 hours 25 minutes before
FLZ039-042-043-048>052-055>057-060>062-065-131400- WEST CENTRAL AND SOUTHWEST FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 530 AM EDT SAT JUL 13 2002 AN UPPER LEVEL DISTURBANCE...CURRENTLY OVER THE NORTHERN GULF OF MEXICO...IS EXPECTED TO MOVE ACROSS NORTHERN FLORIDA TODAY. THIS DISTURBANCE WILL COMBINE WITH THE ALREADY MOIST AND UNSTABLE ATMOSPHERE TO PRODUCE NUMEROUS SHOWERS AND THUNDERSTORMS. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS OVER THE EASTERN GULF OF MEXICO EARLY THIS MORNING...WILL MOVE RAPIDLY NORTHEAST TOWARD THE COASTAL COUNTIES OF WEST CENTRAL AND SOUTHWEST FLORIDA THIS MORNING. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER THE INTERIOR COUNTIES BY LATER IN THE MORNING AND EARLY THIS AFTERNOON. THE MAIN THREAT FROM ANY STRONGER SHOWERS OR THUNDERSTORMS WILL BE GUSTY WINDS OF 30 TO 40 MPH. REMEMBER...ALL THUNDERSTORMS ARE CAPABLE OF PRODUCING DEADLY CLOUD TO GROUND LIGHTNING. MOVE INDOORS AS SOON AS YOU HEAR THUNDER OR SEE LIGHTNING. FOR MARINE INTEREST...CONDITIONS ARE FAVORABLE FOR WATERSPOUT FORMATION THIS MORNING. WIND GUSTS OF 35 KNOTS OR GREATER WILL ALSO BE POSSIBLE WITH ANY STRONGER SHOWERS OR THUNDERSTORMS. MORALES
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 4:52 AM EDT | Special Marine Warning | TBW | 53 min | |
| Jul 13, 4:52 AM EDT | Special Marine Warning | TBW | 53 min | |
| Jul 13, 5:48 AM EDT | Special Marine Warning | TBW | 27 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.