Alert archive / Florida / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 45, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Jul 27, 2002, 6:56 PM EDT for Polk County, Florida. It was in force for 49 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 27, 2002, 6:56 PM EDT (22:56 UTC)
- Expired
- Jul 27, 2002, 7:45 PM EDT
- In force
- 49 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 22:59 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 27, 7:15 PM EDT | Hail 0.75 | Mulberry, 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, 10.9 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
- 1414 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 931 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
192 WUUS52 KTBW 272256 SVRTBW FLC105-272345- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 656 PM EDT SAT JUL 27 2002 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHWESTERN POLK COUNTY IN FLORIDA. * UNTIL 745 PM EDT. * AT 656 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS...8 MILES SOUTH OF LAKELAND...MOVING SOUTHEAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... WILLOW OAK. MULBERRY. $$ LAT...LON 2804 8196 2799 8205 2768 8204 2777 8180 15
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 27, 3:14 PM EDT, 3 hours 42 minutes earlier.
Area forecast discussion, Jul 27, 3:14 PM EDT, 3 hours 42 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 314 PM EDT SAT JUL 27 2002 AN UPPER LOW OVER HISPANOLA IS MOVING WEST...SIMILAR TO AN AVN SOLUTION. DRY MID AND UPPER LEVEL AIR WILL STRETCH ACROSS THE SOUTHERN COUNTIES. THE UPPER LOW IS RAPPING SOME MOISTURE AROUND IT THAT HAS NOW WORKED INTO THE NORTHERN BAHAMAS. MODELS WASH OUT THE DRY AIR SO I WILL DECREASE POPS ONLY A LITTLE INLAND AND IN THE SOUTH. THE CONVECTION OVER THE GULF THAT HAS BEEN GROWING IN AREAL COVERAGE ALL DAY LONG SEEMS TO BE ASSOCIATED WITH SOME UPPER DIFLUENCE. THIS SHOULD MOVE WESTWARD AS THE UPPER LOW PUSHES WEST. THEREFORE OTHER THAN INCREASED ACTIVITY OVER THE SOUTHERN COASTAL WATERS TONIGHT IT WILL HAVE LITTLE IMPACT ON OUR AREA. MONDAY...SOME MOISTURE RETURNS AND I SLOWLY UP THE POPS A LITTLE. AN EASTERLY WAVE STARTS TO SPREAD DEEP MOISTURE BACK ACROSS THE STATE LATE MONDAY BUT MORE LIKE TUESDAY. THE RIDGE AXIS STAYS OVER NORTH OR CENTRAL FLORIDA THROUGH TUESDAY WHICH WILL KEEP THE BEST LOW LEVEL CONVERGENCE ALONG THE WEST COAST. BY WEDNESDAY A FRONT WANTS TO PUSH INTO GEORGIA...NUDGING THE SUBTROPICAL RIDGE SOUTHWARD. WEDNESDAY WILL BE THE TRANSITION DAY... BUT BY THURSDAY WE WILL BE SOLIDLY INTO THE WESTERLIES. I WILL REMOVE TIMING OF CONVECTION FROM THE FORECAST AND INCREASE LOW TEMPERATURES AND DECREASE HIGHS ALONG THE COASTAL AREAS FOR THURSDAY THROUGH SATURDAY. PRELIMINARY NUMBERS... BKV 072/092 071/092 3424 TPA 076/091 076/090 3424 GIF 075/093 075/092 2424 SRQ 075/091 075/091 2324 FMY 076/092 076/092 2324 .TBW...NONE. SOBIEN
In the hours before
Local storm report, Jul 27, 6:32 PM EDT, 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
632 PM EDT SAT JUL 27 2002
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0435 PM TAMPA FL WIND DAMAGE
07/27/02 HILLSBOROUGH A FEW OAK TREES BLOWN DOWN
AT 15TH AVE AND 131ST ST.
REPORTED BY WTVT
0535 PM WEBSTER FL TORNADO
07/27/02 SUMTER SMALL TORNADO RELAYED FROM
SUMTER COUNTY SHERIFF FROM
A PRIVATE CITIZEN. DAMAGE
TO A BARN AND SEVERERAL
TREES AND POWER LINES BLOWN
DOWN
DSThe office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 5:34 PM EDT | Severe Thunderstorm Warning | TBW | DeSoto | 26 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.