Alert archive / Florida / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 38, NWS Tampa Bay, FL

June 4, 2001Pinellas County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 4, 2001, 9:02 PM EDT for Pinellas County, Florida. It was in force for 28 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
Jun 4, 2001, 9:02 PM EDT (01:02 UTC)
Expired
Jun 4, 2001, 9:30 PM EDT
In force
28 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

County Pinellas County, FL

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 1.0 hours before the alert went out and 40 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.

Skew-T log-pSkew-T log-p diagram, Tampa Bay, FL at 00:00Z on 2001-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1323 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 00:00Z on 2001-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1323 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
1407 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS52 KTBW 050103
SVRTBW

FLC103-050130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
902 PM EDT MON JUN 4 2001

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN PINELLAS COUNTY IN FLORIDA.

* UNTIL 930 PM EDT.

* AT 902 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS WITH DAMAGING WINDS...FROM 9 MILES
  EAST OF CLEARWATER TO 13 MILES EAST OF TARPON SPRINGS...MOVING
  WEST AT 15 MPH.

* SEVERE THUNDERSTORMS WILL AFFECT...
  HIGHPOINT.
  OLDSMAR.
  CLEARWATER.
  PALM HARBOR.

SEVERE THUNDERSTORMS CONTAIN WIND GUSTS OF 60 MPH OR HIGHER...AND
HAIL THE SIZE OF DIMES OR LARGER. MOVE TO A PLACE OF SAFETY.


$$


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 Jun 4, 2:30 PM EDT, 6 hours 32 minutes earlier.

Area forecast discussion, Jun 4, 2:30 PM EDT, 6 hours 32 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
230 PM EDT MON JUN 4 2001

UPPER RIDGE AXIS REMAINS IN PLACE OVER THE STATE WITH SFC RIDGE
CURRENTLY PLACED OVER THE N FL. SE LOW LEVEL FLOW GENERATING
STREAKY CU FIELD AS WEST COAST SEABREEZE BEGINNING TO SLOWLY PUSH
INLAND AS SEEN IN SAT IMAGERY. CURRENT TEMPS WARMING TO NEAR
EXPECTED CONVECTIVE TEMPS SO EXPECT CONVECTIVE ACTIVITY TO BEGIN
SHORTLY THIS AFTERNOON INTO THIS EVENING.

MODELS IN GOOD AGREEMENT WITH DEEPENING SE FLOW/MOISTURE TO PRODUCE
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS OVER THE AREA FOR
THE NEXT FEW DAYS. MODEL SOUNDING SHOWING PWATS APPROACHING 2 INCHES
WITH LIS -5 TO -6 AND CAPES OVER 3000 TO CONTINUE UNSTABLE
ENVIRONMENT OVER THE AREA. ALL MODEL GRAPHICS ALSO INDICATING
AFTERNOON PRECIP FIELDS OVER INTERIOR ZONES THEN MOVING OVER THE
COAST THEREAFTER AS STRONGER E COAST SEABREEZE DRIVES CONVECTION
WESTWARD. WILL BUY OFF ON THIS SOLUTION WITH THE COMBINATION
OF UNSTABLE ATMOSPHERE/DIURNAL HEATING AND BOUNDARY COLLISIONS FOR
CHANCE EVENING POPS TONIGHT WITH LIKELY POPS ON WED AFTERNOON INTO
EVENING. MODEL TEMPS LOOK GOOD WILL BLEND.

MARINE...SE FLOW TO CONTINUE WITH NO HIGHLIGHTS OVER THE WATERS AS
RIDGE REMAINS N THRU 48 HRS. RIDGE TO SINK S AS FRONT APPROACHES TO
E GULF THU/FRI.

EXTENDED...UPPER RIDGE TO SHIFT EASTWARD AS DEEPENING TROF MOVES INTO
THE S MS RV VALLEY INTO THU. SFC FRONT TO APPROACH THE AREA THU
NIGHT INTO FRI. UPPER SUPPORT WITH VORT MAX AT THE BASE OF THE
TROF TO MOVE OVER THE AREA TO PRODUCE SCT CONVECTION AHEAD
AND ALONG THE FRONT. FRONT EXPECTED TO GET HUNG OVER S FL PENINSULA
OVER THE WEEKEND WITH MOISTURE S OF FRONT AND SOME SFC DRYING OVER
THE N PENINSULA. UPPER TROF TO REMAIN OVER THE STATE LATE IN THE
PERIOD WITH WEAK SFC RIDGING BUILDING IN.

THX COORD MLB.

PRELIM NUMBERS:
TPA 75/91/75/90 4645
FMY 72/91/73/91 4645

.TBW...NONE.

RD

In the hours before

Local storm report, Jun 4, 7:17 PM EDT, 1 hour 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
717 PM EDT MON JUN 04 2001

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0340 PM    CITRUS SPGS               FL   .75 INCH HAIL
06/04/01   CITRUS                         REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0459 PM    TAMPA                     FL   .75 INCH HAIL
06/04/01   HILLSBOROUGH                   LOCATED AT BUSCH AND
                                          NEBRASKA RD. REPORTED
                                          BY STORM SPOTTER.

0510 PM    TAMPA                     FL   1 INCH HAIL
06/04/01   HILLSBOROUGH                   LOCATED AT SLIGH AND
                                          HANNA RD. REPORTED BY
                                          WFLA-TV.

0514 PM    TAMPA                     FL   .88 INCH HAIL
06/04/01   HILLSBOROUGH                   LOCATED AT BUSCH AND
                                          DALE MABRY RD. REPORTED
                                          BY STORM SPOTTER.

0515 PM    TAMPA                     FL   1 INCH HAIL
06/04/01   HILLSBOROUGH                   LOCATED IN SEMINOLE
                                          HEIGHTS. REPORTED BY
                                          WFLA-TV.

0622 PM    LAND O LAKES              FL   .88 INCH HAIL
06/04/01   PASCO                          REPORTED BY WTSP COOP
                                          OBSERVER.

The office that day

Everything else NWS Tampa Bay, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 4, 8:32 PM EDTSevere Thunderstorm WarningTBWHillsborough43 min
Jun 5, 2:34 PM EDTSevere Thunderstorm WarningTBWSarasota41 min
Jun 5, 3:44 PM EDTSevere Thunderstorm WarningTBWCharlotte, Sarasota46 min
Jun 5, 5:57 PM EDTSevere Thunderstorm WarningTBWPasco48 min
Jun 5, 6:42 PM EDTSevere Thunderstorm WarningTBWHernando33 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; the sounding from the Mesonet's radiosonde archive.