Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 129, NWS Fort Worth, TX

December 10, 1998Ellis County, Hill County, Johnson County, Texas

NWS Fort Worth, TX issued this flash flood warning at Dec 10, 1998, 5:57 PM CST for Ellis County, Hill County, Johnson County, Texas. 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 outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Dec 10, 1998, 5:57 PM CST (23:57 UTC)
Expired
Dec 10, 1998, 10:00 PM CST
In force
4 hr
Issued by
NWS Fort Worth, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Ellis County, TX, Hill County, TX, Johnson County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 70 km from the middle of the area, began a volume at 23:59 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

Shreveport, LA (KSHV), launched 12:00Z, 12.0 hours before the alert went out and 263 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, Shreveport, LA at 12:00Z on 1998-12-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Shreveport, LA at 12:00Z on 1998-12-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 square meters per square second.1939587897117Sfc1 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
503 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
250 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 KFWD 102357
FFWFTW
TXC139-213-217-231-251-257-349-379-467-110400-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
557 PM CST THU DEC 10 1998

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ELLIS COUNTY IN TEXAS
  HENDERSON COUNTY IN TEXAS
  HILL COUNTY IN TEXAS
  HUNT COUNTY IN TEXAS
  JOHNSON COUNTY IN TEXAS
  KAUFMAN COUNTY IN TEXAS
  NAVARRO COUNTY IN TEXAS
  RAINS COUNTY IN TEXAS
  VAN ZANDT COUNTY IN TEXAS

* UNTIL 1000 PM CST

* AT 557 PM CST...LAW ENFORCEMENT OFFICIALS CONTINUE TO REPORT HIGH 
WATER COVERING SOME ROADS IN PARTS OF JOHNSON...ELLIS AND HILL COUNTIES.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE 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.
MOVE TO HIGHER GROUND.

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 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.
n
LAT...LON 3251 9759 3225 9757 3213 9743 3182 9724
          3195 9689 3186 9649 3204 9612 3212 9549
          3268 9567 3293 9571 3297 9591 3339 9589
          3333 9626 3280 9625 3280 9647 3253 9649
          3252 9700

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 10, 9:59 AM CSTFlash Flood WarningFWDBosque, Hamilton4 hr
Dec 10, 9:59 AM CSTFlash Flood WarningFWDEllis, Henderson, Hill, Navarro4 hr
Dec 10, 9:59 AM CSTFlash Flood WarningFWDKaufman, Rains, Van Zandt4 hr
Dec 10, 9:59 AM CSTFlash Flood WarningFWDJohnson4 hr
Dec 10, 1:48 PM CSTFlash Flood WarningFWDHunt, Rains, Van Zandt4 hr
Dec 10, 1:48 PM CSTFlash Flood WarningFWDBosque, Hill, Johnson4 hr
Dec 10, 1:48 PM CSTFlash Flood WarningFWDCollin, Fannin4 hr
Dec 10, 1:48 PM CSTFlash Flood WarningFWDEllis, Henderson, Kaufman, Navarro4 hr
Dec 10, 5:57 PM CSTFlash Flood WarningFWDHenderson, Hunt, Kaufman, Van Zandt4 hr
Dec 10, 5:57 PM CSTFlash Flood WarningFWDRains4 hr
Dec 10, 5:57 PM CSTFlash Flood WarningFWDNavarro4 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.