Alert archive / Florida / Flash Flood Warnings in 2003
Flash Flood Warning 15, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this flash flood warning at Sep 6, 2003, 6:35 AM EDT for Hernando County, Florida. It was in force for 115 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
- Sep 6, 2003, 6:35 AM EDT (10:35 UTC)
- Expired
- Sep 6, 2003, 8:30 AM EDT
- In force
- 115 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Counties, with a storm outline in the text
County Hernando County, FL
The radar
The Tampa radar (KTBW), 90 km from the middle of the area, began a volume at 10:39 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 00:00Z, 10.6 hours before the alert went out and 90 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.
- Mixed-layer CAPE
- 426 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 600 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS52 KTBW 061034 FFWTBW FLC053-061230- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 635 AM EDT SAT SEP 6 2003 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL HERNANDO COUNTY IN FLORIDA. FLOODING WILL AFFECT THE FOLLOWING CITIES. BROOKSVILLE. * UNTIL 830 AM EDT * AT 635 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED RAINFALL RATES OF THREE INCHES PER HOUR. SHOWERS AND THUNDERSTORMS ARE PRODUCING VERY HEAVY RAINFALL FROM SPRING HILL TO BROOKSVILLE. THE HARDEST HIT AREA WILL BE ALONG STATE ROAD 41 BETWEEN BROOKSVILLE AND MASARYKTOWN. DOPPLER RADAR INDICATES 4 TO 6 INCHES OF RAIN HAS FALLEN IN THIS REGION DURING THE PAST TWO HOURS. AN ADDITIONAL 2 TO 4 INCHES OF RAIN IS POSSIBLE IN CENTRAL HERNANDO COUNTY THROUGH 830 AM. FLOODING OF ROADWAYS AND INTERSECTIONS IS LIKELY THIS MORNING. MOTORISTS ARE URGED TO DRIVE WITH EXTREME CAUTION. RESIDENTS IN LOW LYING AND FLOOD PRONE AREAS SHOULD TAKE PRECAUTIONS TO PROTECT PROPERTY FROM FLOOD WATERS. DONT BECOME A STATISTIC. TURN AROUND...DONT DROWN && LAT...LON 2853 8220 2845 8229 2845 8259 2859 8243 $$ 13
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 6, 5:00 AM EDT, 1 hour 35 minutes earlier.
Area forecast discussion, Sep 6, 5:00 AM EDT, 1 hour 35 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
500 AM EDT SAT SEP 6 2003
UPDATE...HENRI DOWNGRADED FROM A TROPICAL STORM TO A TROPICAL
DEPRESSION. TROPICAL STORM WARNINGS FROM ENGLEWOOD TO SUWANNEE RIVER
HAVE BEEN CANCELLED. TROPICAL DEPRESSION HENRI WILL LIKELY MAKE
LANDFALL OVER SOUTHERN PINELLAS COUNTY EARLY THIS MORNING AND WILL
THEN MOVE ACROSS HILLSBOROUGH COUNTY. CONDITIONS MAY BECOME
BREEZY THIS MORNING WITH WINDS OF 15 TO 25 MPH AND GUSTY AS THE
DEPRESSION MOVES ACROSS THE TAMPA AREA. THIS MORNING BANDS OF
MODERATE SHOWERS WILL MOVE ACROSS WEST CENTRAL FLORIDA EARLY THIS
MORNING MAINLY TO THE NORTH AND EAST OF THE DEPRESSION. A BAND OF
SHOWERS AND ISOLATED THUNDERSTORMS PERSISTS OVER SOUTHERN LEE COUNTY.
ADDITIONAL SHOWERS AND ISOLATED THUNDERSTORMS ARE EXPECTED TO DEVELOP
TODAY WITH ONLY WEAK DAYTIME HEATING. SPECIAL MARINE WARNINGS IN
EFFECT FROM ENGLEWOOD TO TARPON SPRINGS THIS MORNING DUE TO THE
DEPRESSION. WINDS AND SEAS WILL SUBSIDE THIS AFTERNOON AS THE
DEPRESSION MOVES INLAND AND WEAKENS. FLOOD WATCH REMAINS IN EFFECT
ACROSS WEST CENTRAL AND SOUTHWEST FLORIDA AS LOCALLY HEAVY RAIN IS
STILL POSSIBLE TODAY.
.TBW...FLOOD WATCH THROUGH SATURDAY AFTERNOON ALL ZONES.
...SPECIAL MARINE WARNING ENGLEWOOD TO TARPON SPRINGS.
...SMALL CRAFT EXERCISE CAUTION BONITA BEACH TO ENGLEWOOD.
OGLESBYHazardous weather outlook, Sep 6, 6:00 AM EDT, 35 minutes before
FLZ039-042-043-048>052-055>057-060>062-065-061500- WEST CENTRAL AND SOUTHWEST FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL FL 600 AM EDT SAT SEP 6 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST FLORIDA. .DAY ONE...TODAY: ...A FLOOD WATCH IS IN EFFECT FOR THE WESTERN FLORIDA PENINSULA THROUGH SATURDAY AFTERNOON... TROPICAL DEPRESSION HENRI WILL MOVE ACROSS THE FLORIDA PENINSULA TODAY. NUMEROUS SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS THE REGION DUE TO DEEP TROPICAL MOISTURE OVER THE AREA...WEAK SURFACE HEATING...AND THE DEPRESSION. GUSTY WINDS OF 20 TO 25 MPH ARE POSSIBLE IN THE TAMPA BAY AREA AS THE CENTER OF THE DEPRESSION MOVES ACROSS THE AREA. WINDS WILL SUBSIDE ACROSS THE AREA BY AFTERNOON AS THE DEPRESSION WEAKENS AND MOVES INLAND. RAINFALL WILL GENERALLY BE AN INCH OR LESS...HOWEVER A FEW AREAS MAY RECEIVE 2 TO 5 INCHES OF RAIN WHERE TRAINING OF SHOWERS AND THUNDERSTORMS DEVELOPS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY: NO SIGNIFICANT WEATHER HAZARDS EXPECTED WITH SCATTERED AFTERNOON SHOWERS AND THUNDERSTORMS EACH AFTERNOON THE REMAINDER OF THE WEEK. SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED TODAY. OGLESBY
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 10:29 PM EDT | Flash Flood Warning | TBW | Lee | 3 hr |
| Sep 6, 7:10 AM EDT | Tornado Warning | TBW | Pasco | 35 min |
Nearby
Flash Flood Warnings in Florida, 2003Every flash flood 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; radar from the NEXRAD Level II archive.