Alert archive / Florida / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 83, NWS Tampa Bay, FL

July 25, 2003Pinellas County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jul 25, 2003, 1:59 PM EDT for Pinellas County, Florida. It was in force for 46 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
Jul 25, 2003, 1:59 PM EDT (17:59 UTC)
Expired
Jul 25, 2003, 2:45 PM EDT
In force
46 min
Issued by
NWS Tampa Bay, FL
Area
Counties, with a storm outline in the text

County Pinellas County, FL

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, 6.0 hours before the alert went out and 43 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 12:00Z on 2003-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 117 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 12:00Z on 2003-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 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
117 J/kg
Mixed-layer CIN
-113 J/kg
Mixed-layer LCL
1219 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
24 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.

704 
WUUS52 KTBW 251759
SVRTBW
FLC103-251845-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
158 PM EDT FRI JUL 25 2003

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

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

* UNTIL 245 PM EDT

* AT 158 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS...OVER
  PINELLAS PARK...MOVING SOUTHEAST AT 5 TO 10 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT...
  PINELLAS PARK.
  LEALMAN.
  TREASURE ISLAND.
  SAINT PETERSBURG.
  SAINT PETE BEACH.

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

LAT...LON 2805 8292 2767 8278 2774 8255 2806 8267

$$

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 25, 9:30 AM EDT, 4 hours 29 minutes earlier.

Area forecast discussion, Jul 25, 9:30 AM EDT, 4 hours 29 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
930 AM EDT FRI JUL 25 2003

CURRENT/SHORT TERM...MORNING TBW SOUNDING SHOWS SOUTHERLY LOW
LEVEL FLOW BECOMING WEST ABOVE 800 MB THEN SE ABOVE 300 MB. RIDGE
STILL ACROSS CENTRAL FL BUT LOW LEVEL FLOW IS SOMEWHAT DISTORTED BY
SMALL LOW OFF VOLUSIA/FLAGLER COUNTIES. PLENTY OF LOW LEVEL MOISTURE
AND MID LEVEL TEMPERATURES ARE COOLER THAN NORMAL AND THIS ADDED
INSTABILITY SHOULD HELP KEEP TSTMS STRONGER WITH ISOLATED SEVERE
WEATHER THIS AFTERNOON ESPECIALLY FROM TAMPA BAY NORTH.
CONVECTION ALREADY NEAR SHORE OVER NORTHERN FA AND OVER SOUTHERN
FA WHERE FLOW IS MORE SE TSTMS SHOULD BE LATER.

MARINE...NO PROBLEMS.

.TBW...NONE.

CP
Hazardous weather outlook, Jul 25, 6:00 AM EDT, 7 hours 59 minutes before
FLZ039-042-043-048>052-055>057-060>062-065-251430-

WEST CENTRAL AND SOUTHWEST FLORIDA HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL FL
600 AM EDT FRI JUL 25 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST
FLORIDA.

.DAY ONE...TODAY:
SOUTHEASTERLY LOW LEVEL FLOW WILL BRING THE EAST COAST SEA BREEZE
TO THE WEST COAST THIS AFTERNOON. THIS AND THUNDERSTORM OUTFLOW
BOUNDARIES WILL TRIGGER SCATTERED MAINLY AFTERNOON THUNDERSTORMS. IN
ADDITION TO THE SEA BREEZE FRONT...A SMALL SCALE UPPER LEVEL ROTATION
150 MILES WEST OF NAPLES EARLY THIS MORNING WILL MOVE INTO THE AREA
THIS AFTERNOON. A SMALL POCKET OF COOL AIR ASSOCIATED WITH THIS
SYSTEM COULD ENHANCE THE HAIL POTENTIAL. LOCALIZED FLOODING AND BRIEF
60 MPH DOWNBURST WINDS ARE ALSO POSSIBLE.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY:

SOUTHEASTERLY LOW LEVEL FLOW WILL CONTINUE THROUGH MONDAY AS A RIDGE
OF HIGH PRESSURE REMAINS OVER NORTHERN FLORIDA. THIS WILL PUSH
THE EAST COAST SEA BREEZE INTO THE AREA AND CREATE AFTERNOON AND
EARLY EVENING THUNDERTSORMS. WINDS WILL VEER TO THE SOUTHWEST TUESDAY
AS LARGE UPPER LEVEL TROUGH MOVES INTO THE EASTERN QUARTER OF THE
U.S. THIS WILL BRING EARLY MORNING STORMS TO THE COAST AND SCATTERED
STORMS IN THE AFTERNOON.

.SPOTTER CALL TO ACTION STATEMENT...

SPOTTER ACTIVATION IS REQUESTED THIS AFTERNOON AND EARLY EVENING.
WEATHER SPOTTERS ARE REMINDED TO RELAY ANY REPORTS OF SIGNIFICANT
WEATHER TO THE NWS OFFICE IN RUSKIN.

NOAH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 3:37 PM EDTSevere Thunderstorm WarningTBWHillsborough23 min

Nearby

Severe Thunderstorm Warnings in Florida, 2003Every severe thunderstorm warning in 2003

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.