Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 140, NWS Houston/Galveston, TX

November 14, 1998Waller County, Washington County, Texas

NWS Houston/Galveston, TX issued this flash flood warning at Nov 14, 1998, 4:45 AM CST for Waller County, Washington 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
Nov 14, 1998, 4:45 AM CST (10:45 UTC)
Expired
Nov 14, 1998, 7:35 AM CST
In force
3 hr
Issued by
NWS Houston/Galveston, TX
Area
Whole counties

Counties Waller County, TX, Washington County, TX

The radar

The Houston radar (KHGX), 129 km from the middle of the area, began a volume at 10:44 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

Corpus Christi, TX (KCRP), launched 00:00Z, 10.8 hours before the alert went out and 287 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, Corpus Christi, TX at 00:00Z on 1998-11-14Temperature 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, Corpus Christi, TX at 00:00Z on 1998-11-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 198 square meters per square second.1939587897Sfc1 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
471 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
198 m²/s²
0-3 km storm-relative helicity
244 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.9

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 14, 4:45 AM CSTFlash Flood WarningHGXAustin, Colorado, Jackson, Wharton3 hr
Nov 14, 5:22 AM CSTFlash Flood WarningHGXGrimes, Montgomery, Walker4 hr
Nov 14, 5:47 AM CSTFlash Flood WarningHGXLiberty, Polk, San Jacinto4 hr
Nov 14, 5:47 AM CSTFlash Flood WarningHGXHarris4 hr
Nov 14, 6:36 AM CSTFlash Flood WarningHGXTrinity3 hr
Nov 14, 6:36 AM CSTFlash Flood WarningHGXMadison3 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.