Alert archive / Florida / Flash Flood Warnings in 1997

Flash Flood Warning 22, NWS Tampa Bay, FL

December 13, 1997Pasco County, Pinellas County, Florida

NWS Tampa Bay, FL issued this flash flood warning at Dec 13, 1997, 12:29 PM EST for Pasco County, Pinellas County, Florida. It was in force for 12 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 13, 1997, 12:29 PM EST (17:29 UTC)
Expired
Dec 14, 1997, 12:00 AM EST
In force
12 hr
Issued by
NWS Tampa Bay, FL
Area
Whole counties

Counties Pasco County, FL, Pinellas County, FL

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 5.5 hours before the alert went out and 48 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 1997-12-13Temperature 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°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 1997-12-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 square meters per square second.19395878Sfc1 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
526 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
112 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 
TTAA00 KTBW 131729
FFWTBW
FLC049-057-081-101-103-105-115-140500-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1229 PM EST SAT DEC 13 1997

THE NATIONAL WEATHER SERVICE HAS ISSUED A...FLOOD WARNING
EFFECTIVE UNTIL MIDNIGHT EST FOR

THE FOLLOWING COUNTIES:
   PASCO..PINELLAS..HILLSBOROUGH..POLK..MANATEE..HARDEE
   AND SARASOTA

SHORTLY AFTER NOON...WEATHER SERVICE DOPPLER RADAR AND SATELLITE
CONTINUED TO SHOW A LARGE AREA OF MODERATE RAINS HEADING FOR WEST-
CENTRAL FLORIDA. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES BY
EARLY EVENING ARE LIKELY...ESPECIALLY ACROSS MANATEE...SARASOTA AND
HARDEE COUNTIES.

WITH THE PREVIOUS FEW DAYS OF HEAVY RAINS...TOTALING 3 TO 7 INCHES
ACROSS A WIDE AREA...WIDESPREAD FLOODING IS BECOMING IMMINENT. LOCAL
OFFICIALS IN PASCO AND SARASOTA COUNTIES REPORT SOME CREEKS GETTING
CLOSE TO SOME HOMES...AND THE WATER CONTINUES RISING. ALSO...PAYNES
CREEK AT THE HISTORICAL SITE IN HARDEE COUNTY IS RISING AND FLOODING OF
THE PARK AND NEARBY ROADS IS IMMINENT. WIDESPREAD STREET FLOODING
ACROSS THE WARNED AREA WILL OCCUR AND SOME ROAD CLOSURES POSSIBLE WITH
THE CONTINUED RAINS.

FLOODING PROBLEMS...ONCE THEY BEGIN...WILL BE SLOW TO SUBSIDE DUE TO
THE ALREADY SATURATED GROUND.

RESIDENTS LIVING IN AREAS THAT FLOOD EASILY OR ALONG STREAMS AND CREEKS
SHOULD TAKE IMMEDIATE ACTION. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING
WATERS BY FOOT OR BY AUTO. DO NOT ATTEMPT TO DRIVdE THROUGH WATER OF
UNKNOWN DEPTHS OR WHICH COVERS THE ROADWAY. IT TAKES LESS THAN TWO FEET
OF WATER FOR VEHICLES TO STALL AND BEGIN TO FLOAT.

UPDATED SPECIFIC INFORMATION WILL BE ISSUED IN FOLLOW-UP STATEMENTS
LATER TODAY.

NASH

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 Dec 13, 3:10 AM EST, 9 hours 19 minutes earlier.

Area forecast discussion, Dec 13, 3:10 AM EST, 9 hours 19 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY-RUSKIN, FL
305 AM EST SAT DEC 13 1997

FLOOD WATCH COMMENTS...
WOULD NOT BE OPPOSED AND FOR CONTINUITY OF FA AND WOULD PREFER TO INCLUDE
LEE COUNTY IN THE FLOOD WATCH. SUSPECT WITH SLOW SAG OF SFC BNDRY SWD
AND PROSPECT FOR ANOTHER MESO LOW PULLING OUT OF THE SE GOMEX WITH
POTENTIAL CYCLOGENSIS AS IT PUSHES NEWD ALONG FRONT INTO ATLANTIC...
SUSPECT THREAT FOR HEAVY RAIN WILL SPREAD SWD. LEE COUNTY HAS ALREADY
SEEN ONE ROUND OF RAIN FRI WITH ANOTHER TDY.

SFC BNDRY HAS CONTD SLO PUSH S TO A PGD TO NR VRB LN AND HAS TEMP STALLED
AGAIN.  WDSPD LOW CIGS AND RAIN N OF FNT WITH A SCT-NRMS SHWRS AND FEW
TSTMS ALONG FNTAL BNDRY. ONE 5H VORT MAX AND WK MESO LOW PRES WILL TREK
ACROSS PNSULA TDY SO XPT RAINS TO LIGHTEN TO AREAS OF LGT RAIN N OF FNT
WITH SHWRS/TSTMS SRN FA ALONG CONVERGENT FRONTAL BNDRY. THEN AS NEXT
DVLPG SFC LO PULLS OUT OF SE GOMEX WITH APPROACH OF MAIN 5H LOW...EXPECT
RENEWED HEAVIER RAINS TO SPRD BACK ACROSS PNSULA TNGT INTO SUN. ANOTHER
2-4 INCHES OF RAIN PSBL FOR MOST OF FA NEXT 36 TO 48 HRS. STILL LIKELY
CLDY CONDS WITH AREAS OF WRAP ARND RAIN SLOLY COMING TO AN END ON MON
AS CLOSED 5H LO AND INTENSIFYING SFC LOW DVLOPG OFF FL E COAST PULLS
SLOWLY EWD.

TEMPS WILL BE HELD DOWN CONSIDERABLY BY CLDS AND CAA/EVAP COOLING N OF
FNT. NO SUNSHINE THIS WEEKEND ENTIRE FA.

DMR

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 13, 12:29 PM ESTFlash Flood WarningTBWHardee, Hillsborough, Manatee, Polk, Sarasota12 hr

Nearby

Flash Flood Warnings in Florida, 1997Every flash flood warning in 1997

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.