Alert archive / Florida / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 111, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Jul 14, 2001, 4:18 PM EDT for Hillsborough County, Florida. It was in force for 42 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 14, 2001, 4:18 PM EDT (20:18 UTC)
- Expired
- Jul 14, 2001, 5:00 PM EDT
- In force
- 42 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 20:17 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 14, 4:28 PM EDT | Thunderstorm Wind | Thonotosassa, FL | Thunderstorm winds caused minor damage to the roofs of several mobile homes, downed several large trees, numerous large branches and power lines from Thonotosassa to Valrico in northeast Hillsborough county. |
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, 8.3 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
- 2220 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 603 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 29 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 142018 SVRTBW FLC057-142100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 418 PM EDT SAT JUL 14 2001 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN HILLSBOROUGH COUNTY IN FLORIDA. * UNTIL 500 PM EDT. * AT 418 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH DAMAGING WINDS...6 MILES NORTHEAST OF TEMPLE TERRACE...MOVING SOUTHEAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... THONOTOSASSA. MANGO. SEFFNER. VALRICO. 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 2817 8229 2811 8244 2785 8225 2796 8208 15 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 Jul 14, 2:30 PM EDT, 1 hour 48 minutes earlier.
Area forecast discussion, Jul 14, 2:30 PM EDT, 1 hour 48 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 230 PM EDT SAT JUL 14 2001 CURRENTLY: LOCAL POCKETS OF HEAVY RAIN THIS AFTERNOON WITH 88D SHOWING 3 INCHES PLUS IN A FEW SPOTS. ECHOES ARE TRAINING ALONG NORTHWEST TO SOUTHEAST ORIENTED BOUNDARIES. MORE TO COME FOR THE NEXT FEW HOURS AS BOUNDARIES CONTINUE TO MOVE INTO THE AREA FROM THE NORTH. FORECAST: NOT MUCH CHANGE FROM THINKING OF PREVIOUS FORECAST CYCLE. DRIER AIR WORKING IN FROM THE NORTH BEHIND WEAK BOUNDARY WILL LOWER POPS SOMEWHAT THE NEXT COUPLE OF DAYS...ESPECIALLY NORTH OF TAMPA BAY. WITH LOW LEVEL FLOW BECOMING OFFSHORE...TIMING WILL BE MORE TOWARDS THE AFTERNOON AND EVENING THROUGH MONDAY. AFTERNOON TEMPS WILL BE NEAR NORMAL WITH MORE SUNSHINE THAN THE PAST FEW DAYS...BUT EVENINGS WILL BE COOLER THAN USUAL NORTH AND CENTRAL AS SKIES START CLEARING AND SOME RADIATIONAL COOLING SETS IN. COULD SEE SOME PATCHY FOG DURING THE EARLY MORNING HOURS IN THE USUAL LOW SPOTS... BUT I DONT EXPECT IT TO BE WIDESPREAD ENOUGH TO MENTION IN THE ZONES AT THIS TIME. MARINE: WINDS TURNING MORE OFFSHORE...WHICH WILL REDUCE THE SEAS SOMEWHAT THROUGH MONDAY. NO HEADLINES. EXTENDED: SURFACE RIDGE SETS UP OVER CENTRAL FLORIDA FOR THE MIDDLE OF THE WEEK...INDICATING CLIMO TEMPS AND POPS. BEST CONVECTION CHANCES SHOULD BE IN THE AFTERNOON AND EVENING. PRELIM NUMBERS: TPA 74/90/72/91 3323P FMY 74/91/73/91 5535 .TBW...NONE. ALSHEIMER
In the hours before
Local storm report, Jul 14, 10:48 AM EDT, 5 hours 30 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1048 AM EDT SAT JUL 14 2001
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0915 AM MADEIRA BEACH FL WATERSPOUT
07/14/01 PINELLAS SEVERAL REPORTS OF
WATERSPOUTS FROM
MADEIRA BEACH TO TIERRA
VERDE FROM 915AM TO
940AM EDT. REPORTS
RECEIVED FROM EMERGENCY
MANAGEMENT, MEDIA, AND
SKYWARN SPOTTERS. EVENT
DURATION 25 MINUTES.
0939 AM TIERRA VERDE FL TORNADO
07/14/01 PINELLAS BRIEF F0 TORNADO CAUSED
BY MOVEMENT ONSHORE OF
WATERSPOUT AT TIERRA
VERDE. NO DAMAGE
REPORTS AT THIS TIME.
REPORTED BY SKYWARN
SPOTTER. TIME ESTIMATE
BY RADAR.The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 9:36 AM EDT | Tornado Warning | TBW | Pinellas | 9 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2001Every severe thunderstorm warning in 2001
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.