Alert archive / Florida / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 27, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Mar 31, 2001, 8:06 PM EST for Highlands County, Florida. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 31, 2001, 8:06 PM EST (01:06 UTC)
- Expired
- Mar 31, 2001, 8:30 PM EST
- In force
- 24 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Highlands County, FL
The radar
The Melbourne radar (KMLB), 109 km from the middle of the area, began a volume at 01:08 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 31, 6:00 PM EST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 00:00Z, 1.1 hours before the alert went out and 112 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
- 1413 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 576 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 3.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS52 KTBW 010106 SVRTBW FLC055-010130- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 806 PM EST SAT MAR 31 2001 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL HIGHLANDS COUNTY IN FLORIDA. * UNTIL 830 PM EST. * AT 806 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL...6 MILES NORTHWEST OF LAKE PLACID...MOVING EAST AT 45 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT... LAKE PLACID. SEVERE THUNDERSTORMS CONTAIN WIND GUSTS OF 60 MPH OR HIGHER...AND HAIL THE SIZE OF DIMES OR LARGER. MOVE TO A PLACE OF SAFETY. $$ LAT...LON 2744 8144 2726 8143 2728 8081 2750 8083 13 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 Mar 31, 8:00 PM EST, 6 minutes earlier.
Area forecast discussion, Mar 31, 8:00 PM EST, 6 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
800 PM EST SAT MAR 31 2001
SEVERE THUNDERSTORM WATCH CONTINUES FOR A LARGE PORTION OF WEST
CENTRAL AND SOUTHWEST FLORIDA UNTIL 11 PM. A LINE OF SHOWERS AND
A FEW STRONG THUNDERSTORMS CONTINUES FROM EASTERN HARDEE COUNTY TO 80
MILES WEST OF CAPTIVA. THE STORMS HAVE WEAKENED DURING THE LAST
COUPLE HOURS DUE TO THE LOSS OF DAYTIME HEATING AND A SLIGHT DECREASE
IN LOW LEVEL CONVERGENCE. THUNDERSTORMS MAY REINTENSIFY DURING THE
NEXT COUPLE HOURS AS U/L DIVERGENCE INCREASES AHEAD OF A DIGGING
SHORTWAVE OVER THE LOWER MISSISSIPPI VALLEY. CURRENT ZONES ARE ON
TRACK.
.TBW...FIRE WX WATCH SUNDAY FLZ039-042>043-052-056>057-061...
AND INTERIOR FLZ048>049.
OGLESBYIn the hours before
Local storm report, Mar 31, 5:22 PM EST, 2 hours 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
522 PM EST SAT MAR 31 2001
TIME(EST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0200 PM 6 NE THONOTOSASSA FL .75 INCH HAIL
03/31/01 HILLSBOROUGH REPORTED BY HILLSBOROUGH
RIVER STATE PARK.
0205 PM LARGO FL .75 INCH HAIL
03/31/01 PINELLAS REPORTED BY STORM
SPOTTER.
0208 PM LARGO FL 1.75 INCH HAIL
03/31/01 PINELLAS REPORTED BY STORM
SPOTTER.
0238 PM POLK CITY FL .75 INCH HAIL
03/31/01 POLK REPORTED BY STORM
SPOTTER.
0250 PM HAINES CITY FL 1.75 INCH HAIL
03/31/01 POLK REPORTED BY LAW
ENFORCEMENT OFFICIAL.
0258 PM SEFFNER FL 1 INCH HAIL
03/31/01 HILLSBOROUGH REPORTED BY MEDIA.
0300 PM PLANT CITY FL 1 INCH HAIL
03/31/01 HILLSBOROUGH REPORTED BY PUBLIC.
0300 PM 3 NNW BRANDON FL .75 INCH HAIL
03/31/01 HILLSBOROUGH REPORTED BY FIRE AND
RESCUE.
0301 PM SEFFNER FL 1.5 INCH HAIL
03/31/01 HILLSBOROUGH REPORTED BY MEDIA.
0305 PM TURKEY CREEK FL 1.5 INCH HAIL
03/31/01 HILLSBOROUGH REPORTED BY STORM
SPOTTER.
0319 PM 1 W LAKELAND FL .75 INCH HAIL
03/31/01 POLK REPORTED BY STORM
SPOTTER.
0403 PM 1 N CYPRESS GARDENS FL .75 INCH HAIL
03/31/01 POLK REPORTED BY STORM
SPOTTER.
0404 PM WINTER HAVEN FL .88 INCH HAIL
03/31/01 POLK REPORTED BY HAM RADIO
OPERATOR.
RKRNearby
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.