Alert archive / Florida / Tornado Warnings in 2004

Tornado Warning 20, NWS Tampa Bay, FL

August 14, 2004Pasco County, Florida

NWS Tampa Bay, FL issued this tornado warning at Aug 14, 2004, 1:54 PM EDT for Pasco County, Florida. It was in force for 36 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
Aug 14, 2004, 1:54 PM EDT (17:54 UTC)
Expired
Aug 14, 2004, 2:30 PM EDT
In force
36 min
Issued by
NWS Tampa Bay, FL
Area
Counties, with a storm outline in the text

County Pasco County, FL

The radar

The Tampa radar (KTBW), 70 km from the middle of the area, began a volume at 17:58 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado 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, 5.9 hours before the alert went out and 70 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 2004-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1978 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 2004-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 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
1978 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
725 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
74 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KTBW 141754
TORTBW
FLC101-141830-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
154 PM EDT SAT AUG 14 2004

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN PASCO COUNTY IN FLORIDA.

* UNTIL 230 PM EDT

* AT 154 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A WATERSPOUT MOVING ASHORE AS A TORNADO OVER NEW PORT              
  RICHEY...MOVING NORTHEAST AT 20 MPH.

* THE TORNADO WILL AFFECT...
  PORT RICHEY.
  JASMINE ESTATES.

IF CAUGHT OUTSIDE...MOVE INTO A STURDY BUILDING. AS A LAST RESORT...
SEEK SHELTER IN A CULVERT...DITCH...OR LOW SPOT...AND COVER YOUR HEAD
WITH YOUR HANDS.


&&

LAT...LON 2828 8281 2819 8280 2821 8268 2831 8270

$$

25

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Aug 14, 9:00 AM EDT, 4 hours 54 minutes earlier.

Area forecast discussion, Aug 14, 9:00 AM EDT, 4 hours 54 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
900 AM EDT SAT AUG 14 2004

.FOR THE MORNING UPDATE...DEEP TROPICAL MOISTURE REMAINS OVER THE
REGION IN THE WAKE OF HURRICANE CHARLIE.  DEEP SOUTHWEST FLOW
REMAINS OVER THE AREA...WITH SCATTERED SHOWERS AND THUNDERSTORMS
ACROSS THE NORTHEAST GULF OF MEXICO SPREADING ONSHORE OF THE
NORTHERN FORECAST AREA.  A BAND OF SHOWERS AND THUNDERSTORMS WAS
ALSO OVER SOUTHWEST FLORIDA LIFTING SLOWLY NORTH.  DAYTIME HEATING
WILL LEAD TO NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS THE REGION
THIS AFTERNOON WITH LOCALLY HEAVY RAINFALL.  CURRENT FORECAST IS ON
TRACK WITH NO UPDATE TO THE ZONES PLANNED.

&&

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

OGLESBY
Hazardous weather outlook, Aug 14, 5:30 AM EDT, 8 hours 24 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
530 AM EDT SAT AUG 14 2004

FLZ039-042-043-048>052-055>057-060>062-065-141430-
CHARLOTTE-CITRUS-DE SOTO-HARDEE-HERNANDO-HIGHLANDS-HILLSBOROUGH-LEE-
LEVY-MANATEE-PASCO-PINELLAS-POLK-SARASOTA-SUMTER-
530 AM EDT SAT AUG 14 2004

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

.DAY ONE...TODAY:

NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED TODAY AS LEFTOVER
MOISTURE FROM HURRICANE CHARLEY COMBINES WITH AN UPPER LEVEL
DISTURBANCE MOVING ACROSS THE REGION.  THE PRIMARY THREATS FROM
STRONGER CELLS WILL BE FREQUENT CLOUD TO GROUND LIGHTNING...GUSTY
WINDS TO 40 MPH AND LOCALLY HEAVY DOWNPOURS THAT COULD CAUSE MINOR
FLOODING OF LOW LYING AND POOR DRAINAGE AREAS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY:

SCATTERED MAINLY AFTERNOON AND EARLY EVENING THUNDERSTORMS ARE
EXPECTED EACH DAY.  THE PRIMARY THREATS FROM STRONGER CELLS WILL BE
FREQUENT CLOUD TO GROUND LIGHTNING AND BRIEF HEAVY DOWNPOURS.

.SPOTTER CALL TO ACTION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED.

&&

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

PRC

In the hours before

Special weather statement, Aug 14, 11:44 AM EDT, 2 hours 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1144 AM EDT SAT AUG 14 2004

FLZ039-042-043-048-049-051-055-141645-
CITRUS-HERNANDO-HILLSBOROUGH-LEVY-MANATEE-PASCO-SUMTER-
1144 AM EDT SAT AUG 14 2004

...FUNNEL CLOUDS ARE POSSIBLE IN MANATEE...EASTERN
HERNANDO...EASTERN HILLSBOROUGH...EASTERN CITRUS...EASTERN
LEVY...SUMTER AND EASTERN PASCO COUNTIES...

A LINE OF THUNDERSTORMS MOVING EAST INTO INTERIOR SECTIONS OF
COASTAL COUNTIES HAS THE POTENTIAL TO PRODUCE FUNNEL CLOUDS EARLY
THIS AFTERNOON.

AT 1145 AM EDT...LAW ENFORCEMENT OFFICIALS REPORTED A FUNNEL CLOUD IN
SUMTER COUNTY. DOPPLER RADAR SHOWED STORMS CAPABLE OF PRODUCING
FUNNEL CLOUDS MOVING NORTHEAST AT 20 MPH.

FUNNEL CLOUDS CAN BECOME BRIEF...SMALL...BUT DANGEROUS TORNADOES.
MOVE INDOORS ..AND STAY AWAY FROM WINDOWS.

LAT...LON 2932 8253 2746 8253 2739 8234 2742 8206
      2822 8212 2931 8206

25
Special weather statement, Aug 14, 12:15 PM EDT, 1 hour 39 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1215 PM EDT SAT AUG 14 2004

FLZ052-056-057-061-141700-
DE SOTO-HARDEE-HIGHLANDS-POLK-
1215 PM EDT SAT AUG 14 2004

...FUNNEL CLOUDS ARE POSSIBLE IN DESOTO...HARDEE...HIGHLANDS AND POLK
COUNTIES...

AT 1215 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF SCATTERED THUNDERSTORMS...CAPABLE OF PRODUCING FUNNEL
CLOUDS...OVER DESOTO...POLK...HIGHLANDS...AND HARDEE
COUNTIES...MOVING NORTHEAST AT 20 MPH.

FUNNEL CLOUDS CAN BECOME BRIEF...SMALL...BUT DANGEROUS TORNADOES.
MOVE INDOORS...AND STAY AWAY FROM WINDOWS.

LAT...LON 2707 8203 2724 8109 2806 8147 2827 8202

25
Special weather statement, Aug 14, 12:50 PM EDT, 1 hour 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1250 PM EDT SAT AUG 14 2004

FLZ042-043-048>052-055>057-060>062-065-141800-
CHARLOTTE-CITRUS-DE
SOTO-HARDEE-HERNANDO-HIGHLANDS-HILLSBOROUGH-LEE-MANATEE-PASCO-
PINELLAS-POLK-SARASOTA-SUMTER-
1250 PM EDT SAT AUG 14 2004

...FUNNEL CLOUDS ARE POSSIBLE IN MANATEE...CHARLOTTE...LEE...
PINELLAS...DESOTO...HARDEE...HIGHLANDS...POLK...HERNANDO...SARASOTA..
.HILLSBOROUGH...CITRUS...SUMTER AND PASCO COUNTIES AS WELL AS TAMPA
BAY...

AT 1250 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SCATTERED TO NUMEROUS THUNDERSTORMS OVER THE AREA...CAPABLE OF
PRODUCING FUNNEL CLOUDS...MOVING NORTHEAST AT 20 MPH.

LAW ENFORCEMENT OFFICIALS HAVE ALSO REPORTED FUNNEL CLOUDS EARLIER
OVER THE NATURE COAST.

FUNNEL CLOUDS CAN BECOME BRIEF...SMALL...BUT DANGEROUS TORNADOES.
MOVE INDOORS...AND STAY AWAY FROM WINDOWS.

LAT...LON 2900 8270 2785 8287 2652 8225 2648 8158
      2700 8153 2722 8090 2827 8155 2841 8190
      2901 8186

25

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 1:14 PM EDTTornado WarningTBWManatee31 min
Aug 14, 1:23 PM EDTTornado WarningTBWSumter37 min
Aug 14, 1:29 PM EDTSpecial Marine WarningTBW31 min
Aug 14, 1:48 PM EDTSpecial Marine WarningTBW57 min
Aug 14, 2:18 PM EDTTornado WarningTBWPolk27 min
Aug 14, 2:22 PM EDTTornado WarningTBWManatee23 min
Aug 14, 2:43 PM EDTSpecial Marine WarningTBW47 min
Aug 14, 2:48 PM EDTTornado WarningTBWManatee27 min
Aug 14, 2:50 PM EDTTornado WarningTBWHardee25 min
Aug 14, 2:54 PM EDTTornado WarningTBWSarasota36 min
Aug 14, 3:00 PM EDTTornado WarningTBWPasco30 min
Aug 14, 3:10 PM EDTSpecial Marine WarningTBW65 min
Aug 14, 3:17 PM EDTTornado WarningTBWPinellas13 min
Aug 14, 4:10 PM EDTFlash Flood WarningTBWPasco65 min
Aug 14, 4:29 PM EDTSpecial Marine WarningTBW61 min
Aug 14, 4:36 PM EDTSevere Thunderstorm WarningTBWHighlands24 min
Aug 14, 4:54 PM EDTTornado WarningTBWLevy21 min
Aug 14, 4:58 PM EDTSevere Thunderstorm WarningTBWHighlands32 min
Aug 14, 5:33 PM EDTTornado WarningTBWLevy27 min
Aug 14, 5:36 PM EDTSpecial Marine WarningTBW54 min
Aug 14, 6:26 PM EDTSpecial Marine WarningTBW64 min
Aug 14, 6:32 PM EDTTornado WarningTBWPinellas28 min
Aug 14, 7:13 PM EDTTornado WarningTBWHillsborough32 min

Nearby

Tornado Warnings in Florida, 2004Every tornado warning in 2004Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.