Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 121, NWS Fort Worth, TX

December 10, 1998Bosque County, Hamilton County, Texas

NWS Fort Worth, TX issued this flash flood warning at Dec 10, 1998, 9:59 AM CST for Bosque County, Hamilton 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, 9:59 AM CST (15:59 UTC)
Expired
Dec 10, 1998, 2:00 PM CST
In force
4 hr
Issued by
NWS Fort Worth, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Bosque County, TX, Hamilton County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 57 km from the middle of the area, began a volume at 16:00 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, 4.0 hours before the alert went out and 286 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 101604
FFWFTW
TXC035-139-193-213-217-251-257-349-379-467-102000-

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

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
   BOSQUE COUNTY IN TEXAS
   ELLIS COUNTY IN TEXAS
   HAMILTON COUNTY IN TEXAS
   HENDERSON COUNTY IN TEXAS
   HILL 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 200 PM CST

* AT 959 AM CST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY 
  RAIN CONTINUING FROM HAMILTON TO HILLSBORO TO CORSICANA TO EMORY.  
  RADAR ESTIMATES BETWEEN ONE AND TWO INCHES OF RAIN HAVE FALLEN   
  SINCE 600 AM...AND ANOTHER ONE TO TWO INCHES ARE EXPECTED BY 200 PM. 
  DUE TO THE WET GROUND...FLOODING OF LOW-LYING AND FLOOD PRONE AREAS 
  IS LIKELY.

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...DIPS...OR OTHER 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.

LAT...LON 3252 9759 3221 9764 3170 9843 3145 9828
          3169 9769 3168 9759 3187 9706 3182 9650
          3203 9610 3213 9546 3270 9563 3298 9568
          3296 9594 3285 9593 3284 9610 3280 9649
          3253 9653

The office that day

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

IssuedProductOfficeCountiesLasted
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 WarningFWDEllis, Hill, Johnson4 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.