Alert archive / Florida / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 63, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Oct 13, 2002, 2:39 PM EDT for Pinellas County, Florida. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 13, 2002, 2:39 PM EDT (18:39 UTC)
- Expired
- Oct 13, 2002, 3:15 PM EDT
- In force
- 36 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Counties, with a storm outline in the text
County Pinellas County, FL
The radar
The Tampa radar (KTBW), 56 km from the middle of the area, began a volume at 18:42 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 6.7 hours before the alert went out and 56 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
- 2737 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 564 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- -8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
946 WUUS52 KTBW 131839 SVRTBW FLC103-131915- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 239 PM EDT SUN OCT 13 2002 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN PINELLAS COUNTY IN FLORIDA. * UNTIL 315 PM EDT * AT 239 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL...OVER PALM HARBOR...MOVING NORTHEAST AT 5 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... PALM HARBOR. DIME TO NICKEL SIZE HAIL IS POSSIBLE WITH THIS STORM. WIND GUSTS TO 60 MPH MAY CAUSE SOME STRUCTURAL DAMAGE...MAINLY TO TREES AND POWER LINES. && LAT...LON 2809 8287 2797 8273 2812 8262 2820 8272 $$
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 Oct 13, 2:18 PM EDT, 21 minutes earlier.
Area forecast discussion, Oct 13, 2:18 PM EDT, 21 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 218 PM EDT SUN OCT 13 2002 ALREADY HAD A PULSE SEVERE THUNDERSTORM IN LEVY COUNTY THIS AFTERNOON ON TAIL END OF JET STREAK MOVING BY. THUNDERSTORMS WILL CONTINUE WITH PRETTY GOOD COVERAGE EXPECTED LATER THIS AFTERNOON AND EVENING...A FEW BECOMING STRONG WITH RAIN IN EXCESS OF 2 INCHES AND QUITE A BIT OF LIGHTNING. CONVECTION SHOULD QUIET DOWN OVERNIGHT...BUT KICK BACK UP AGAIN MONDAY AS PLENTIFUL MOISTURE REMAINS IN PLACE. ALL MODELS ARE IN REASONABLE AGREEMENT WITH DEVELOPMENT OF MULTIPLE LOW CENTERS OVER THE EASTERN GULF MONDAY NIGHT...PASSING THROUGH DURING THE DAY TUESDAY. LOTS OF CLOUDS AND HIGH POPS...WITH TEMPS EXPECTED TO BE DOWN DURING THE DAY WITH LESS SUNSHINE. DRYING KICKS IN BEHIND FIRST COLD FRONT OF THE SEASON ON WEDNESDAY. HIGH TEMPS WILL BE A LITTLE BELOW NORMAL BY THEN. THURSDAY MORNING WILL FEEL NICE WITH TEMPS 5 TO 10 DEGREES BELOW NORMAL. THE DRIER AND COOLER CONDITIONS WILL CONTINUE INTO FRIDAY WITH A SLOW WARM UP TOWARDS NORMAL TEMPS OVER THE WEEKEND. MARINE: GRADIENT REMAINS REASONABLY LOW THROUGH MONDAY NIGHT...THEN WINDS PICK UP ON TUESDAY AS LOWS MOVE BY. WINDS WILL BE STRONGEST WEDNESDAY AND THURSDAY AS COLD ADVECTION KICKS IN BEHIND THE FRONT. SCEC WILL LIKELY BE NEEDED BY THEN. PRELIM NUMBERS: BKV 70/86/70/83 5667 TPA 74/88/74/84 5667 GIF 73/87/72/84 4557 SRQ 73/88/73/84 5667 FMY 73/88/73/85 5667 .TBW...NONE. ALSHEIMER
Hazardous weather outlook, Oct 13, 5:52 AM EDT, 8 hours 47 minutes before
FLZ039-042-043-048>052-055>057-060>062-065-131500- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 552 AM EDT SUN OCT 13 2002 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST FLORIDA. .DAY ONE...TODAY: ...SCATTERED LATE AFTERNOON AND EVENING THUNDERSTORMS ESPECIALLY ACROSS COASTAL COUNTIES... HOT AND HUMID AIR WILL BE LIFTED BY THE COLLISION OF EASTERLY FLOW WITH THE GULF COAST SEA BREEZE TO PRODUCE MORE LATE AFTERNOON AND EVENING THUNDERSTORMS. A FEW STORMS WILL DEVELOP OVER INTERIOR WEST CENTRAL FLORIDA BETWEEN 2 AND 4 PM. THESE STORMS WILL CONTAIN OCCASIONAL LIGHTNING AND A BRIEF DOWNPOUR. BOUNDARIES FROM THESE STORMS WILL IGNITE MORE ACTIVITY OVER THE COASTAL COUNTIES BETWEEN 5 AND 7 PM. STRONGER STORMS ARE POSSIBLE BY SUNSET IN AREAS WHERE THE EAST COAST SEA BREEZE PROVIDES ADDITIONAL LIFT. THESE STRONGER STORMS WILL CONTAIN FREQUENT CLOUD TO GROUND LIGHTNING...RAINFALL RATES OF 2 OR 3 INCHES PER HOUR...AND BRIEF WIND GUSTS TO 30 MPH. CONDITIONS WILL GRADUALLY IMPROVE LATER THIS EVENING. WHEN SKIES DARKEN...MOVE INDOORS. IF THERE IS TIME...UNPLUG APPLIANCES AND ELECTRICAL EQUIPMENT. WAIT UNTIL THE STORM ENDS BEFORE USING THE TELEPHONE OR RUNNING WATER. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED. DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY: ...LOCALLY HEAVY RAINFALL POSSIBLE MONDAY NIGHT AND TUESDAY... AN AREA OF LOW PRESSURE WILL DEVELOP IN THE EASTERN GULF MONDAY NIGHT...THEN BEGIN TO INTENSIFY TUESDAY AS AN UPPER LEVEL DISTURBANCE APPROACHES FROM THE WEST. DEEP TROPICAL MOISTURE WILL BE DRAWN NORTHWARD AHEAD OF THE SYSTEM...RESULTING IN NUMEROUS SHOWERS AND THUNDERSTORMS MONDAY NIGHT AND TUESDAY. THE POTENTIAL EXISTS FOR 1 TO 2 INCHES OF RAIN ACROSS A GOOD PART OF WEST CENTRAL AND SOUTHWEST FLORIDA...WITH HIGHER AMOUNTS WHERE STRONGER CELLS DEVELOP. THE ENERGY PROVIDED BY THE DISTURBANCE WILL ALSO INCREASE THE THREAT FOR STRONG THUNDERSTORMS...ESPECIALLY LATE MONDAY NIGHT AND EARLY TUESDAY MORNING. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA OUTLETS FOR FURTHER INFORMATION AS THE SITUATION UNFOLDS. FOR ADDITIONAL INFORMATION...CHECK OUT OUR WEBSITE AT HTTP://WWW.SRH.NOAA.GOV/TBW BSG
In the hours before
Local storm report, Oct 13, 2:32 PM EDT, 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
232 PM EDT SUN OCT 13 2002
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0150 PM OTTER CREEK FL .75 INCH HAIL
10/13/02 LEVY REPORTED BY LAW
ENFORCEMENT.
0220 PM LARGO FL .75 INCH HAIL
10/13/02 PINELLAS REPORTED BY STORM SPOTTER.
JTDThe office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 1:35 PM EDT | Severe Thunderstorm Warning | TBW | Levy | 40 min |
| Oct 13, 2:42 PM EDT | Severe Thunderstorm Warning | TBW | Citrus | 48 min |
| Oct 13, 2:55 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough | 50 min |
| Oct 13, 3:45 PM EDT | Severe Thunderstorm Warning | TBW | Pinellas | 30 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.