Alert archive / Florida / Flash Flood Warnings in 1998

Flash Flood Warning 13, NWS Tallahassee, FL

September 29, 1998Franklin County, Wakulla County, Florida

NWS Tallahassee, FL issued this flash flood warning at Sep 29, 1998, 3:57 PM EDT for Franklin County, Wakulla County, Florida. It was in force for 4 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
Sep 29, 1998, 3:57 PM EDT (19:57 UTC)
Expired
Sep 29, 1998, 8:00 PM EDT
In force
4 hr
Issued by
NWS Tallahassee, FL
Area
Whole counties

Counties Franklin County, FL, Wakulla County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.0 hours before the alert went out and 54 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, Tallahassee Rgnl, FL at 12:00Z on 1998-09-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 675 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 1998-09-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 square meters per square second.193958Sfc1 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
675 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
827 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
146 m²/s²
Significant tornado parameter
0.2
Supercell composite
4.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTLH 291956
FFWTLH
FLC037-039-073-077-129-300000-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
357 PM EDT TUE SEP 29 1998

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* FLOOD WARNING FOR...
  FRANKLIN...GADSDEN...LEON...LIBERTY AND WAKULLA COUNTY IN NORTHERN
  FLORIDA.

* UNTIL 800 PM EDT

A BAND OF VERY HEAVY SHOWERS AND THUNDERSTORMS CURRENTLY OVER
PORTIONS OF THE EXTREME EASTERN PANHANDLE WILL MOVE INTO THE
WESTERN PORTIONS OF THE BIG BEND BEFORE 5 PM EDT. THESE SHOWERS AND
STORMS WILL PRODUCE TORRENTIAL RAINFALL IN A VERY SHORT PERIOD OF
TIME. DOPPLER RADAR HAS ALREADY ESTIMATED RAINFALL AMOUNTS OF 4 TO 6
INCHES WITH THESE STORMS DURING THE PAST THREE HOURS AND FLOODING
WILL LIKELY OCCUR WITH THESE STORMS AS THEY MOVE INTO THE WESTERN
SECTIONS OF THE BIG BEND AND WILL AFFECT TOWNS SUCH AS QUINCY...
CRAWFORDVILLE AND TALLAHASSEE THROUGH THE EARLY EVENING HOURS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED
QUICKLY. IT ONLY TAKES A FOOT OR TWO OF FLOWING WATER TO SWEEP MOST
CARS AWAY. REM.EMBER...MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 28, 8:55 PM EDTTornado WarningTAEWalton15 min
Sep 28, 9:30 PM EDTTornado WarningTAEWalton15 min
Sep 29, 1:47 AM EDTFlash Flood WarningTAEWalton12 hr
Sep 29, 7:52 AM EDTTornado WarningTAEHolmes, Washington63 min
Sep 29, 8:51 AM EDTFlash Flood WarningTAEBay, Holmes, Washington6 hr
Sep 29, 9:07 AM EDTTornado WarningTAEBay48 min
Sep 29, 9:24 AM EDTTornado WarningTAEWashington31 min
Sep 29, 9:49 AM EDTTornado WarningTAEHolmes46 min
Sep 29, 10:13 AM EDTSevere Thunderstorm WarningTAEBay77 min
Sep 29, 10:49 AM EDTTornado WarningTAEGulf61 min
Sep 29, 11:13 AM EDTSevere Thunderstorm WarningTAECalhoun, Jackson77 min
Sep 29, 3:35 PM EDTTornado WarningTAEGulf35 min
Sep 29, 3:57 PM EDTFlash Flood WarningTAEGadsden, Leon, Liberty4 hr
Sep 29, 5:14 PM EDTSevere Thunderstorm WarningTAELeon, Wakulla76 min
Sep 29, 5:14 PM EDTSevere Thunderstorm WarningTAEGadsden76 min
Sep 29, 6:30 PM EDTSevere Thunderstorm WarningTAELeon, Wakulla60 min

Nearby

Flash Flood Warnings in Florida, 1998Every flash flood warning in 1998

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.