Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 3, NWS Fort Worth, TX

January 4, 1998Fannin County, Texas

NWS Fort Worth, TX issued this flash flood warning at Jan 4, 1998, 5:30 PM CST for Fannin County, Texas. It was in force for 3 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
Jan 4, 1998, 5:30 PM CST (23:30 UTC)
Expired
Jan 4, 1998, 8:30 PM CST
In force
3 hr
Issued by
NWS Fort Worth, TX
Area
Whole counties

County Fannin County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 159 km from the middle of the area, began a volume at 23:32 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.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.5 hours before the alert went out and 139 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, Fort Worth, TX at 12:00Z on 1998-01-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 908 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 12:00Z on 1998-01-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 196 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
908 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
533 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
196 m²/s²
0-3 km storm-relative helicity
251 m²/s²
Significant tornado parameter
1.2
Supercell composite
5.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFTW 042336
FFWFTW
TXC147-050230-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
530 PM CST SUN JAN 4 1998
 
THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  830 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
   ...FANNIN COUNTY
 
AT 530 PM...DOPPLER RADAR ESTIMATED 2 TO 2 1/2 INCHES OF RAINFALL OVER
SOUTHWEST FANNIN. ADDITIONAL THUNDERSTORMS WITH HEAVY RAIN ARE EXPECTED
TO MOVE OVER THE ENTIRE COUNTY AND RAINFALL TOTALS COULD RISE TO 3 TO 4
INCHES...RESULTING IN FLASH FLOODING.
 
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 4, 3:30 PM CSTFlash Flood WarningFWDDenton, Grayson3 hr
Jan 4, 4:07 PM CSTSevere Thunderstorm WarningFWDCollin68 min
Jan 4, 4:45 PM CSTFlash Flood WarningFWDCollin3 hr

Nearby

Flash Flood Warnings in Texas, 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; radar from the NEXRAD Level II archive.