Alert archive / Florida / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 20, NWS Tampa Bay, FL

June 4, 2004Charlotte County, Sarasota County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 4, 2004, 6:49 PM EDT for Charlotte County, Sarasota County, Florida. It was in force for 41 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 4, 2004, 6:49 PM EDT (22:49 UTC)
Expired: Jun 4, 2004, 7:30 PM EDT
In force: 41 min
Issued by: NWS Tampa Bay, FL
Area: Counties, with a storm outline in the text

Counties Charlotte County, FL, Sarasota County, FL

The radar

The Tampa radar (KTBW), 88 km from the middle of the area, began a volume at 22:49 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
Jun 4, 7:00 PM EDT	HAIL 0.75	Punta Gorda, FL	PENNY SIZE HAIL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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, 10.8 hours before the alert went out and 88 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 754 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 890 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -25 m²/s²
0-3 km storm-relative helicity: -20 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.

984 
WUUS52 KTBW 042249
SVRTBW
FLC015-115-042330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
648 PM EDT FRI JUN 4 2004

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CHARLOTTE COUNTY IN FLORIDA.
  SOUTHEASTERN SARASOTA COUNTY IN FLORIDA.

* UNTIL 730 PM EDT

* AT 648 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS...8 MILES
  NORTHEAST OF PUNTA GORDA...MOVING WEST AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT...
  CLEVELAND.
  PORT CHARLOTTE.
  NORTHPORT. 

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

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN RUSKIN.


&&

LAT...LON 2692 8189 2703 8190 2703 8205 2714 8216
      2692 8218

$$

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, 1:10 PM EDT, 5 hours 39 minutes earlier.

Area forecast discussion, Jun 4, 1:10 PM EDT, 5 hours 39 minutes before

WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
110 PM EDT FRI JUN 4 2004

.SHORT TERM (TONIGHT THRU SUNDAY)...AN UPPER TROUGH WITH WEAK VORT
LOBES MOVING THROUGH ITS BASE WILL PERSIST OVER THE SERN U.S. AND
FLORIDA THROUGH THE PERIOD. AT THE SURFACE HIGH PRESSURE ACROSS THE
SOUTHERN PENINSULA WILL GRADUALLY DRIFT NORTH BY SUNDAY BECOMING
ALIGNED SE-NW ACROSS THE N-CENTRAL PENINSULA. COMBINATION OF AMPLE
LOW LEVEL MOISTURE...INSTABILITY AND DAILY AFTERNOON SEA BREEZE
CIRCULATIONS WILL SUPPORT SCATTERED SHOWERS AND THUNDERSTORMS BOTH
DAYS...AND WILL BLANKET THE FORECAST AREA WITH POPS IN THE 40-50%
RANGE. LIGHT STEERING FLOW ON SATURDAY WILL AGAIN ALLOW STORMS TO
PROPAGATE ALONG THE SEA BREEZE BOUNDARIES WITH SOME LOCALLY HEAVY
RAINFALL POSSIBLE.

ON SUNDAY STEERING FLOW WILL BECOME SOUTHEASTERLY AS THE SURFACE
RIDGE DRIFTS A BIT FURTHER NORTH...WITH BEST COVERAGE OF CONVECTION
SETTING UP ALONG COASTAL LOCATIONS DURING THE LATE AFTERNOON AND
EARLY EVENING HOURS. INCREASED CLOUD COVER AND HIGHER PRECIP CHANCES
WILL KEEP TEMPERATURES NEAR CLIMO-LEVELS THROUGH THE WEEKEND. MAV/MET
GUIDANCE IS AGAIN CLOSE...SO WILL USE A BLEND.

.LONG TERM (SUN NIGHT-FRI)...UPPER RIDGING TO BUILD OVER THE AREA SUN
NIGHT AND BECOME WELL ESTABLISHED BY MID WEEK. SFC RIDGE AXIS MOVES
OVER N FL/S GA KEEPING THE AREA IN SE LL FLOW WITH PLENTY OF
ATLANTIC MOISTURE IN PLACE TO COMBINE WITH DIURNAL HEATING TO PRODUCE
AFTERNOON WEST COAST SEABREEZE CONVECTION THAT WILL LATER COLLIDE
WITH EAST COAST SEA BREEZE AND OUT FLOW BOUNDARIES FOR SCATTERED
AFTERNOON INTO EVENING SHOWERS AND THUNDERSTORMS. LATEST EXT MODELS
TRY TO SPIN UP UPPER AND SFC LOW IN WESTERN GULF LATE IN THE PERIOD
AND MOVE IT INTO THE NORTH CENTRAL GULF. SFC GRADIENT WOULD TIGHTEN
WITH INCREASING CHANCES FOR PRECIP AHEAD OF SYSTEM. WILL KEEP SCT
POPS ATTM AND WAIT TO SEE BETTER MODEL CONTINUITY. TEMPS NEAR NORMAL.

&&

.MARINE...HAVE MADE LITTLE CHANGES TO THE ONGOING FORECAST. A LIGHT
SOUTH TO SOUTHWEST WIND FLOW IN THE 5 TO 10 KNOT RANGE CAN BE
EXPECTED TONIGHT AND SATURDAY. WINDS WILL BACK TO THE SOUTH AND
SOUTHEAST SUNDAY AND INTO EARLY NEXT WEEK AS SURFACE HIGH PRESSURE
SETS UP OVER THE NORTH-CENTRAL PENINSULA. NO HIGHLIGHTS EXPECTED AT
THIS TIME...BUT HIGHER WIND AND SEAS WILL BE POSSIBLE IN THE VICINITY
OF LATE AFTERNOON AND EVENING THUNDERSTORMS EACH DAY.

&&

.FIRE WEATHER...AMPLE LOW LEVEL MOISTURE ALONG WITH GOOD CHANCES FOR
SHOWERS AND THUNDERSTORMS WILL KEEP HUMIDITY LEVELS ABOVE CRITICAL
VALUES INTO THE WEEKEND WITH NO WATCHES OR RED FLAGS EXPECTED.

&&

.PRELIMINARY POINT TEMPS/POPS...
TPA 075 088 074 090/ 20 50 40 50
FMY 072 090 072 091/ 30 50 40 50
GIF 072 090 072 091/ 40 50 40 50
SRQ 072 087 072 089/ 20 50 40 50
BKV 068 090 068 090/ 20 50 30 50

&&

.TBW WATCHES/WARNINGS/ADVISORIES...NONE.

&&

SHORT TERM...MCMICHAEL
LONG TERM....DAVIS

Hazardous weather outlook, Jun 4, 5:00 AM EDT, 13 hours 49 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
5 AM EDT FRI JUN 4 2004

FLZ039-042-043-048>052-055>057-060>062-065-041500-
CHARLOTTE-CITRUS-DESOTO-HARDEE-HERNANDO-HIGHLANDS-HILLSBOROUGH-LEE-
LEVY-MANATEE-PASCO-PINELLAS-POLK-SARASOTA-SUMTER-
5 AM EDT FRI JUN 4 2004

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

.DAY ONE...TODAY:

...ISOLATED STRONG TO SEVERE THUNDERSTORMS POSSIBLE TODAY...

THE COMBINATION OF AN UPPER LEVEL DISTURBANCE...AND A
MOIST...UNSTABLE ATMOSPHERE...WILL LEAD TO SCATTERED SHOWERS AND
THUNDERSTORMS AGAIN THIS AFTERNOON AND EVENING...ESPECIALLY
INLAND...AWAY FROM THE GULF COAST.

ISOLATED SHOWERS AND THUNDERSTORMS COULD DEVELOP AS EARLY AS THIS
MORNING OVER THE EASTERN GULF WATERS...AND IMMEDIATE COASTAL COUNTIES
FROM THE TAMPA BAY AREA...NORTHWARD TO CEDAR KEY.

BY THIS AFTERNOON...SHOWERS AND THUNDERSTORMS ARE EXPECTED TO BECOME
MORE NUMEROUS AS THE WEST COAST SEA BREEZE HELPS TO PUSH THE STORMS
EASTWARD TOWARD THE INLAND COUNTIES.

SOME STORMS COULD BECOME STRONG OR SEVERE THIS AFTERNOON...
ESPECIALLY INLAND.

THE MAIN THREATS WITH ANY STRONG TO POSSIBLY SEVERE THUNDERSTORMS
WILL BE DAMAGING WIND AND SMALL HAIL.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA OUTLETS FOR
POSSIBLE WATCHES OR WARNINGS THIS AFTERNOON.

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

SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ARE AGAIN EXPECTED FOR
SATURDAY...ESPECIALLY OVER INLAND LOCATIONS. SOME STORMS COULD BECOME
STRONG. BY SUNDAY...LOW LEVEL WINDS ARE EXPECTED TO BECOME
SOUTHEASTERLY...AND CONTINUE FROM THE SOUTHEAST THROUGH MUCH OF NEXT
WEEK. THE LOW LEVEL SOUTHEAST WINDS WILL SHIFT THE BEST CHANCES FOR
SCATTERED AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS TOWARD THE
GULF COAST...WHICH WILL ALSO BE WHERE THE HIGHEST THREAT FOR ISOLATED
STRONG TO SEVERE THUNDERSTORMS WILL BE EACH DAY.

.SPOTTER CALL TO ACTION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON.

&&

FOR ADDITIONAL WEATHER INFORMATION...CHECK OUR WEB SITE AT
HTTP://WWW.SRH.NOAA.GOV/TBW (LOWER CASE)

In the hours before

Local storm report, Jun 4, 4:03 PM EDT, 2 hours 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
403 PM EDT FRI JUN 04 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0352 PM     WATER SPOUT      3 WNW GIBSONTON         27.86N 82.41W
06/04/2004                   XXX                XX   BROADCAST MEDIA

            NUMEROUS REPORTS FROM LOCAL MEDIA. EVENT BEGAN AT
            APPROXIMATELY 352 PM AND CONTINUED FOR SEVERAL MINUTES.

&&
LOCATED IN HILLSBOROUGH BAY FLORIDA.

BSG

Special weather statement, Jun 4, 4:46 PM EDT, 2 hours 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
446 PM EDT FRI JUN 4 2004

FLZ062-065-042145-
CHARLOTTE-LEE-
446 PM EDT FRI JUN 4 2004

...STRONG THUNDERSTORMS WILL AFFECT EASTERN LEE AND CHARLOTE
COUNTIES...
THUNDERSTORMS...MOVING NORTHWEST AT 5 MPH...WILL AFFECT ALVA AND
TUCKERS CORNER...UNTIL 545 PM EDT. GUSTY WINDS 40 TO 50 MPH MAY
CAUSE LOOSE OBJECTS TO BLOW AROUND. MINOR DAMAGE TO TREE LIMBS AND
WIRES IS POSSIBLE. FREQUENT CLOUD TO GROUND LIGHTNING IS EXPECTED.
IF CAUGHT OUTSIDE...CROUCH DOWN IN A LOW SPOT...AWAY FROM TALL
OBJECTS. THIS STORM WILL PRODUCE PEA SIZE HAIL. TORRENTIAL RAINS
WILL CAUSE PONDING OF WATER ON ROADS...AND MINOR FLOODING OF POOR
DRAINAGE AREAS.

JILLSON

Local storm report, Jun 4, 4:57 PM EDT, 1 hour 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
457 PM EDT FRI JUN 04 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0345 PM     HAIL             POLK CITY               28.18N 81.82W
06/04/2004  1.75 INCH        POLK               FL   BROADCAST MEDIA

            REPORT RECEIVED VIA MEDIA FROM GENERAL PUBLIC. TIME
            ESTIMATED FROM RADAR.

&&

BSG

Special weather statement, Jun 4, 5:15 PM EDT, 1 hour 34 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
515 PM EDT FRI JUN 4 2004

FLZ051-042200-
HILLSBOROUGH-
515 PM EDT FRI JUN 4 2004

...STRONG THUNDERSTORMS WILL AFFECT GIBSONTON...
A THUNDERSTORM...NEARLY STATIONARY...WILL AFFECT RIVERVIEW AND
GIBSONTON...UNTIL 600 PM EDT. GUSTY WINDS UP TO 50 MPH MAY CAUSE
LOOSE OBJECTS TO BLOW AROUND. SOME DAMAGE TO TREE LIMBS AND WIRES IS
POSSIBLE. FREQUENT CLOUD TO GROUND LIGHTNING IS EXPECTED. IF CAUGHT
OUTSIDE...CROUCH DOWN IN A LOW SPOT...AWAY FROM TALL OBJECTS. HAIL
UP TO ONE HALF INCH IN DIAMETER IS EXPECTED. DIME SIZE HAIL WAS
REPORTED WITH THIS STORM AT 514 PM. TORRENTIAL RAINS WILL REDUCE
VISIBILITY TO NEAR ZERO AT TIMES. MOTORISTS MAY WANT TO DELAY TRAVEL.

Local storm report, Jun 4, 5:17 PM EDT, 1 hour 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
517 PM EDT FRI JUN 04 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0514 PM     HAIL             2 SW RIVERVIEW          27.85N 82.34W
06/04/2004  1.00 INCH        HILLSBOROUGH       FL   TRAINED SPOTTER

            AT EXIT 250 ON INTERSTATE 75 GIBSONTON ROAD.

&&

BSG

Special weather statement, Jun 4, 6:44 PM EDT, 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
644 PM EDT FRI JUN 4 2004

FLZ060>062-042330-
CHARLOTTE-DE SOTO-SARASOTA-
644 PM EDT FRI JUN 4 2004

...STRONG THUNDERSTORMS WILL AFFECT PORT CHARLOTTE
...A THUNDERSTORM...MOVING WEST AT 5 MPH...WILL AFFECT FORT
OGDEN...CLEVELAND...PUNTA GORDA AND PORT CHARLOTTE...UNTIL 730 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. THIS STORM WILL PRODUCE PEA SIZE
HAIL. RAINFALL RATES OF 1 TO 2 INCHES PER HOUR WILL OCCUR. MOTORISTS
CAN EXPECT PONDING OF WATER ON ROADS...AND MINOR FLOODING OF POOR
DRAINAGE AREAS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 1:24 PM EDT	Severe Thunderstorm Warning	TBW	Manatee	36 min
Jun 4, 3:04 PM EDT	Severe Thunderstorm Warning	TBW	Hillsborough, Polk	41 min
Jun 4, 3:54 PM EDT	Special Marine Warning	TBW		36 min
Jun 4, 4:20 PM EDT	Severe Thunderstorm Warning	TBW	Hillsborough	40 min
Jun 4, 7:45 PM EDT	Severe Thunderstorm Warning	TBW	Manatee	30 min

Nearby

Severe Thunderstorm Warnings in Florida, 2004 Every severe thunderstorm warning in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.