Alert archive / Florida / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 60, NWS Tampa Bay, FL

June 29, 2003Manatee County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 29, 2003, 8:29 PM EDT for Manatee County, Florida. It was in force for 16 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
Jun 29, 2003, 8:29 PM EDT (00:29 UTC)
Expired
Jun 29, 2003, 8:45 PM EDT
In force
16 min
Issued by
NWS Tampa Bay, FL
Area
Counties, with a storm outline in the text

County Manatee 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 00:00Z, 0.5 hours before the alert went out and 42 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 2003-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1023 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 2003-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 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
1023 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
1539 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
31 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.

372 
WUUS52 KTBW 300029
SVRTBW
FLC081-300045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
829 PM EDT SUN JUN 29 2003

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN MANATEE COUNTY IN FLORIDA.

* UNTIL 845 PM EDT

* AT 829 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS...OVER
  NORTHWESTERN SARASOTA COUNTY...MOVING NORTHWEST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT...
  LONGBOAT KEY.
  CORTEZ.
  BRADENTON 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.

WIND GUSTS TO 60 MPH WILL CAUSE SOME STRUCTURAL DAMAGE...MAINLY TO
TREES AND POWER LINES. POORLY ANCHORED ROOFS...MOBILE HOMES...AND
SHEDS ARE ALSO AT RISK. 

&&

LAT...LON 2736 8268 2739 8256 2758 8271 2747 8283

$$

88

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 29, 2:00 PM EDT, 6 hours 29 minutes earlier.

Area forecast discussion, Jun 29, 2:00 PM EDT, 6 hours 29 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
200 PM EDT SUN JUN 29 2003

CURRENT/SHORT TERM(TONIGHT-TUE)...... CIRRUS/MID CLOUDS EXTEND FROM
TAMPA BAY NORTH. TO THE SOUTH A FIELD OF CU. TEMPERATURES AROUND 90
IN PLACES AND EXPECT CONTINUED INCREASE FOR A COUPLE MORE HOURS.
GRADIENT WINDS AROUND 15 MPH AND THIS KEEP THE WEST COAST SEABREEZE
LATE TO DEVELOP OR MAY JUST HAVE A WIND SLOW DOWN NEAR THE COAST
LATE ESPECIALLY IN AREAS TO NORTH WHERE HEATING IS LESS. STILL
EXPECT THUNDERSTORMS NEAR THE WEST COAST DEVELOPING LATE THIS
AFTERNOON. SOME OF THE THUNDERSTORMS COULD BE STRONG ESPECIALLY THOSE
DEVELOPING NEAR BOUNDARY INTERSECTIONS. MONDAY AND TUESDAY A SURFACE
RIDGE TO THE NORTH WITH A SOUTHEAST FLOW WILL PROVIDE MOSTLY SUNNY
SKIES IN THE MORNING WITH SCATTERED AFTERNOON THUNDERSTORMS.

EXTENDED (WED-SAT)...AS HEIGHTS ALOFT BEGIN TO SLOWLY FALL...THE
SURFACE RIDGE WILL MOVE TO THE SOUTHERN FA MID WEEK...THEN INTO THE
STRAITS BY FRIDAY AND SATURDAY.THIS WILL PRODUCE SCATTERED
CONVECTION EACH DAY. CONVECTION WILL START ALONG THE NORTH COAST IN
THE MORNING AND GRADUALLY MOVE INLAND AND SOUTH DURING THE AFTERNOON.
BEST CHANCE FOR RAIN MAY BE SATURDAY AS SURFACE TROF TRIES TO SLIDE
SOUTH INTO THE FA.

MARINE...NO CHANGES WITH SE GRADIENT WIND 10 TO 15 KT. MODERATE SE
FLOW TO CONTINUE SUN THEN TAPER OFF MON THRU THE WEEK.

FIRE WEATHER...  NO CONCERNS.

CCFTBW
TPA BB 076/091 076/091 076 03444
FMY BB 075/091 074/091 074 03444
GIF BB 074/092 073/092 074 03242
SRQ BB 076/090 074/090 074 03444
BKV BB 072/091 073/091 071 03444

.TBW...NONE.

CP/FA
Hazardous weather outlook, Jun 29, 5:30 AM EDT, 14 hours 59 minutes before
FLZ039-042-043-048>052-055>057-060>062-065-291400-

WEST CENTRAL AND SOUTHWEST FLORIDA HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL FL
530 AM EDT SUN JUN 29 2003

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

.DAY ONE...TODAY:

A WARM...MOIST...AND UNSTABLE ENVIRONMENT WILL REMAIN OVER THE AREA
TO GENERATE POTENTIALLY STRONG THUNDERSTORMS TODAY. SCATTERED SHOWERS
AND THUNDERSTORMS ARE ALREADY MOVING INTO THE THE AREA THIS MORNING.
WITH DAYTIME HEATING...THIS ACTIVITY IS EXPECTED TO INCREASE IN
COVERAGE BY THIS AFTERNOON. STORM MOVEMENT WILL BE NORTHWARD THROUGH
THE DAY. SOME STORMS MAY BE STRONG PRODUCING STRONG GUSTY WINDS...
DANGEROUS CLOUD TO GROUND LIGHTNING AND LOCALLY HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY:

THE BERMUDA HIGH PRESSURE RIDGE WILL REMAIN ESTABLISHED OVER THE
FLORIDA PENINSULA FOR MORE TYPICAL MAINLY AFTERNOON AND EVENING
THUNDERSTORM DEVELOPMENT EACH DAY.

.SPOTTER CALL TO ACTION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY.

RD

In the hours before

Local storm report, Jun 29, 3:32 PM EDT, 4 hours 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN  FL
332 PM EDT SUN JUN 29 2003

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

0653 PM    2 NW DADE CITY            FL   WIND DAMAGE
06/29/03   PASCO                          NUMEROUS TREES DOWN FROM
                                          POSSIBLE TONADO. REPORTED
                                          BY STORM SPOTTER.

RKR
Special weather statement, Jun 29, 6:43 PM EDT, 1 hour 46 minutes before
FLZ043-048-049-052-292315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
643 PM EDT SUN JUN 29 2003

...STRONG THUNDERSTORMS RACING THROUGH THE LOWER GREEN SWAMP...
THUNDERSTORMS...MOVING NORTHWEST AT 30 MPH...WILL AFFECT THE GREEN
SWAMP...DADE CITY...LACOOCHEE AND RIDGE MANOR...UNTIL 715 PM
EDT. GUSTY WINDS UP TO 40 MPH WILL OCCUR. FREQUENT CLOUD TO GROUND
LIGHTNING IS EXPECTED. IF CAUGHT OUTSIDE...CROUCH DOWN IN A LOW
SPOT...AWAY FROM TALL OBJECTS.

GOLDSMITH
Local storm report, Jun 29, 7:32 PM EDT, 57 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN  FL
732 PM EDT SUN JUN 29 2003

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

0653 PM    2 NW DADE CITY            FL   WIND DAMAGE
06/29/03   PASCO                          NUMEROUS TREES DOWN FROM
                                          POSSIBLE TONADO. REPORTED
                                          BY STORM SPOTTER.

RKR

...CORRECTED FOR PRODUCT TIME...
Local storm report, Jun 29, 8:04 PM EDT, 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN  FL
804 PM EDT SUN JUN 29 2003

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

0655 PM    BOCA GRANDE               FL   WIND DAMAGE
06/29/03   LEE                            SEVERAL TREES WERE DOWN AT
                                          VARIOUS LOCATIONS ON THE
                                          ISLAND. REPORTED BY FIRE
                                          AND RESCUE.

RKR

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 8:07 PM EDTSpecial Marine WarningTBW38 min
Jun 29, 8:35 PM EDTSpecial Marine WarningTBW40 min
Jun 29, 9:54 PM EDTSpecial Marine WarningTBW36 min
Jun 30, 7:27 PM EDTSpecial Marine WarningTBW63 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.