Alert archive / Florida / Flash Flood Warnings in 2004

Flash Flood Warning 4, NWS Tampa Bay, FL

September 26, 20047 counties in Florida

NWS Tampa Bay, FL issued this flash flood warning at Sep 26, 2004, 11:47 AM EDT for 7 counties in Florida. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 26, 2004, 11:47 AM EDT (15:47 UTC)
Expired
Sep 26, 2004, 8:00 PM EDT
In force
8 hr
Issued by
NWS Tampa Bay, FL
Area
Counties, with a storm outline in the text

Counties Hardee County, FL, Highlands County, FL, Hillsborough County, FL, Manatee County, FL, Pasco County, FL, Polk County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 65 km from the middle of the area, began a volume at 15:47 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 flash flood 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, 3.8 hours before the alert went out and 65 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 2004-09-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 12:00Z on 2004-09-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1737 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 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 
WGUS52 KTBW 261547
FFWTBW
FLC049-055-057-081-101-105-119-270000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1147 AM EDT SUN SEP 26 2004

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN HARDEE COUNTY IN FLORIDA.
  POLK COUNTY IN FLORIDA.
  SOUTHERN SUMTER COUNTY IN FLORIDA.
  NORTHWESTERN HIGHLANDS COUNTY IN FLORIDA.
  HILLSBOROUGH COUNTY IN FLORIDA.
  NORTHEASTERN MANATEE COUNTY IN FLORIDA.
  EASTERN PASCO COUNTY IN FLORIDA.

* UNTIL 800 PM EDT

* AT 1143 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
RAINFALL RATES OF ONE INCH PER HOUR FOR SEVERAL HOURS. WIDESPREAD 
FLOODING IS OCCURRING...OR WILL OCCUR...IN THE WARNED AREA. LOW 
LYING URBAN AREAS AND SMALL CREEKS WILL BE ESPECIALLY VULNERABLE. 
NUMEROUS ROADS IN THESE AREAS WILL BE CLOSED...AND SOME HOMES IN 
FLOOD PRONE AREAS MAY BECOME INUNDATED. 

DONT BECOME A STATISTIC. TURN AROUND...DONT DROWN


&&

LAT...LON 2837 8191 2834 8165 2753 8140 2755 8226
      2839 8231

$$
1 follow-up statement
000 
WGUS72 KTBW 261735
FFSTBW
FLC049-055-057-081-101-105-119-270000-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
131 PM EDT SUN SEP 26 2004

...A FLASH FLOOD WARNING CONTINUES FOR NORTHERN HARDEE...POLK 
...SOUTHERN SUMTER...NORTHWESTERN HIGHLANDS...HILLSBOROUGH
...NORTHEASTERN MANATEE AND EASTERN PASCO COUNTY...

...UNTIL 800 PM EDT.

LAW ENFORCEMENT OFFICIALS HAVE REPOTED WIDESPREAD MINOR FLOODING IN 
POLK COUNTY.

PERIODIC HEAVY RAIN WILL CONTINUE THROUGH THE AFTERNOON HOURS WITH 
ANOTHER 2 TO 3 INCHES OF RAIN EXPECTED IN THE WARNED AREA.

WIDESPREAD FLOODING IS OCCURRING...OR WILL OCCUR. NUMEROUS ROADS 
WILL BE CLOSED. MOST STREAMS AND POOR DRAINAGE AREAS WILL FLOOD...AS 
WILL FAST RISING RIVERS. 

DONT BECOME A STATISTIC. TURN AROUND...DONT DROWN


&&

LAT...LON 2848 8185 2751 8133 2750 8228 2845 8223

$$

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Sep 26, 9:30 AM EDT, 2 hours 17 minutes earlier.

Area forecast discussion, Sep 26, 9:30 AM EDT, 2 hours 17 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
930 AM EDT SUN SEP 26 2004

CURRENTLY...SATELLITE AND 88D RETURNS SHOW HURRICANE JEANNE WAS
LOCATED IN THE VICINITY OF FORT MEADE IN SOUTHERN POLK COUNTY EARLY
THIS MORNING. SURFACE OBSERVATIONAL DATA SHOWS TROPICAL STORM FORCE
WINDS WERE IMPACTING A LARGE PORTION OF THE FORECAST AREA AS I WRITE
WITH SEVERAL REPORTS OF HURRICANE FORCE GUSTS AS WELL. AS JEANNE
CONTINUES TO MOVE WEST TROPICAL STORM TO HURRICANE CONDITIONS WILL
PREVAIL ACROSS MUCH OF WEST CENTRAL FL INTO THE AFTERNOON HOURS.
ZONES AND COASTAL PRODUCTS HAVE ALREADY BEEN UPDATED TO INCLUDE THE
TORNADO WATCH BOX...WITH NO OTHER CHANGES EXPECTED AT THIS TIME.
FOR DETAILED INFORMATION ON HURRICANE JEANNE...PLEASE REFER TO OUR
HURRICANE LOCAL STATEMENTS.

NOTE TO TV METEOROLOGISTS...INSTANT MESSAGING CAPABILITY IS DOWN
HERE IN RUSKIN DUE TO HIGH WINDS.

&&

.MARINE...HURRICANE WARNINGS REMAIN IN EFFECT FROM ENGLEWOOD NORTH
TO THE SUWANNEE RIVER...WITH TROPICAL STORM WARNINGS IN EFFECT FROM
BONITA BEACH TO ENGLEWOOD. ALL MARINERS ARE ADVISED TO REMAIN IN
PORT. NO CHANGES EXPECTED AT THIS TIME.

&&

.TBW WATCHES/WARNINGS/ADVISORIES...
 HURRICANE WARNING IS IN EFFECT FROM ENGLEWOOD TO SUWANNEE RIVER.
 TROPICAL STORM WARNING IN EFFECT FOR LEE...CHARLOTTE AND DESOTO
  COUNTIES...INCLUDING COASTAL WATERS BONITA BEACH TO ENGLEWOOD OUT
T 60 NM.
 INLAND HURRICANE WIND WARNING IS IN EFFECT FOR SUMTER...POLK...
  HIGHLANDS AND HARDEE COUNTIES.
 TORNADO WATCH IS IN EFFECT UNTIL 5 PM FOR LEVY...CITRUS...SUMTER...
  HERNANDO...PASCO...PINELLAS...HILLSBOROUGH...AND POLK COUNTIES
  INCLUDING THE ADJACENT GULF COASTAL WATERS OUT 20 NM.
 FLOOD WATCH IN EFFECT FOR ALL COUNTIES.

&&

SHORT TERM...MCMICHAEL
LONG TERM...SHARP
Hazardous weather outlook, Sep 26, 6:00 AM EDT, 5 hours 47 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
600 AM EDT SUN SEP 26 2004

FLZ039-042-043-048>052-055>057-060>062-065-261800-
CHARLOTTE-CITRUS-DE SOTO-HARDEE-HERNANDO-HIGHLANDS-HILLSBOROUGH-LEE-
LEVY-MANATEE-PASCO-PINELLAS-POLK-SARASOTA-SUMTER-
600 AM EDT SUN SEP 26 2004

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

.DAY ONE...TODAY:

HURRICANE JEANNE WILL BE MOVING ACROSS WEST CENTRAL FLORIDA.  SEE
THE LATEST HURRICANE LOCAL STATEMENT FOR UPDATED STORM INFORMATION.

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

RIVER FLOODING WILL BE THE MAIN CONCERN IN THE WAKE OF HURRICANE
JEANNE.  SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE MONDAY
AFTERNOON...WITH ISOLATED AFTERNOON SHOWERS AND THUNDERSTORMS
TUESDAY THROUGH SATURDAY.

.SPOTTER CALL TO ACTION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED TODAY.

&&

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

13

In the hours before

Local storm report, Sep 26, 9:23 AM EDT, 2 hours 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
923 AM EDT SUN SEP 26 2004

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

0815 AM     HURRICANE        BARTOW                  27.90N 81.85W
09/26/2004                   POLK               FL   AMATEUR RADIO

            71 MPH WIND GUST

0830 AM     HURRICANE        BARTOW                  27.90N 81.85W
09/26/2004                   POLK               FL   AMATEUR RADIO

            69 MPH WIND GUST

0830 AM     HURRICANE        10 S MULBERRY           27.76N 81.97W
09/26/2004                   POLK               FL   AMATEUR RADIO

            71 MPH WIND GUST

0845 AM     HURRICANE        SAINT PETERSBURG        27.76N 82.67W
09/26/2004                   PINELLAS           FL   AMATEUR RADIO

            61 MPH WIND GUST

0800 AM     HURRICANE        ARCADIA                 27.22N 81.86W
09/26/2004                   DESOTO             FL   EMERGENCY MNGR

            76 MPH WIND GUST

0845 AM     HURRICANE        VALRICO                 27.95N 82.26W
09/26/2004                   HILLSBOROUGH       FL   AMATEUR RADIO

            ROOF DAMAGE FROM WIND.

0711 AM     HURRICANE        BARTOW                  27.90N 81.85W
09/26/2004                   POLK               FL   AMATEUR RADIO

            WIND GUSTS OF 76 MPH.

0730 AM     HURRICANE        LAKELAND                28.04N 81.96W
09/26/2004                   POLK               FL   AMATEUR RADIO

            WIND GUSTS OF 54 MPH.

0900 AM     HURRICANE        3 NW BRANDON            27.96N 82.33W
09/26/2004                   HILLSBOROUGH       FL   AWOS

            66 MPH WIND GUST AT VANDENBERG AIRPORT.

0903 AM     HURRICANE        10 S BRADENTON          27.34N 82.58W
09/26/2004                   SARASOTA           FL   OFFICIAL NWS OBS

            60 MPH WIND GUST AT SARASOTA/BRADENTON AIRPORT.

&&

AWIPSUSR

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 26, 9:50 AM EDTFlash Flood WarningTBWPolk85 min
Sep 26, 3:38 PM EDTFlash Flood WarningTBWPinellas4 hr
Sep 26, 3:40 PM EDTFlash Flood WarningTBWCitrus, Hernando, Levy, Sumter4 hr

Nearby

Flash Flood Warnings in Florida, 2004Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.