Alert archive / Florida / Flash Flood Warnings in 1997

Flash Flood Warning 21, NWS Tampa Bay, FL

December 13, 19975 counties in Florida

NWS Tampa Bay, FL issued this flash flood warning at Dec 13, 1997, 12:29 PM EST for 5 counties in 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 Hardee County, FL, Hillsborough County, FL, Manatee County, FL, Polk County, FL, Sarasota County, FL

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 5.5 hours before the alert went out and 30 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

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 13, 12:29 PM ESTFlash Flood WarningTBWPasco, Pinellas12 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.