Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 25, NWS Houston/Galveston, TX

January 13, 1998Chambers County, Liberty County, Texas

NWS Houston/Galveston, TX issued this flash flood warning at Jan 13, 1998, 11:49 AM CST for Chambers County, Liberty 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 13, 1998, 11:49 AM CST (17:49 UTC)
Expired
Jan 13, 1998, 2:45 PM CST
In force
3 hr
Issued by
NWS Houston/Galveston, TX
Area
Whole counties

Counties Chambers County, TX, Liberty County, TX

The radar

The Houston radar (KHGX), 60 km from the middle of the area, began a volume at 17:52 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 5.8 hours before the alert went out and 150 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, Lake Charles Mun, LA at 12:00Z on 1998-01-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1061 joules per kilogram.LCLLFCEL10008507005003002001001 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, Lake Charles Mun, LA at 12:00Z on 1998-01-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
1061 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
476 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.0

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.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at Jan 13, 9:36 AM CST, 2 hours 13 minutes earlier.

Area forecast discussion, Jan 13, 9:36 AM CST, 2 hours 13 minutes before
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In the hours before

Special weather statement, Jan 13, 9:05 AM CST, 2 hours 44 minutes before
TXZ-200-213-214-226-227-235>238-132100-

HEAVY RAINFALL OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
905 AM CST TUE JAN 13 1998

...THREAT HEAVY RAINFALL ACROSS SOUTHEAST TEXAS THROUGH THIS
AFTERNOON...

A WEAK UPPER LEVEL DISTURBANCE COUPLED WITH A COLD FRONT ACROSS THE
NORTHERN SECTIONS AND ABUNDANT GULF MOISTURE WILL COMBINE TO PRODUCE
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS TODAY...MAINLY ALONG
AND SOUTH OF AN EDNA TO RICHMOND TO LIBERTY LINE.  OTHER CITIES
INCLUDED IN THE OUTLOOK AREA ARE...HOUSTON... ANAHUAC... GALVESTON...
ANGLETON AND BAY CITY.

AT 9 AM...WEATHER RADAR WAS SHOWING A LARGE AREA OF SHOWERS AND
THUNDERSTORMS JUST OFFSHORE AND SLOWLY PROGRESSING TO THE NORHTEAST.
SCATTERED SHOWERS WERE ALSO NOTED DEVELOPING ACROSS THE OUTLOOK AREA
AND EXPECTED TO BECOME MORE NUMEROUS THROUGHOUT THE DAY.  RAINFALL
AMOUNTS COULD AVERAGE FROM 1 TO 2 INCHES WITH ISOLATED TOTALS OF 3 TO
4 INCHES POSSIBLE.

WITH RECENT HEAVY RAINS ACROSS A LARGE PORTION OF SOUTHEAST
TEXAS...ADDITIONAL HEAVY RAINFALL COULD LEAD TO A THREAT OF FLASH
FLOODING.  THEREFORE...RESIDENTS ACROSS SOUTHEAST TEXAS ARE STRONGLY
URGED TO STAY ABREAST OF THIS DEVELOPING WEATHER SITUATION.  IF
CONDITIONS WORSEN AND APPEAR TO POINT TOWARD A FLOOD THREAT...A FLASH
FLOOD WATCH MAY BE REQUIRED.

STAY TUNED TO NOAA WEATHER RADIO OR OTHER WEATHER NEWS SOURCES FOR
FURTHER UPDATES.
Special weather statement, Jan 13, 9:05 AM CST, 2 hours 44 minutes before
TXZ-200-213-214-226-227-235>238-132100-

HEAVY RAINFALL OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
905 AM CST TUE JAN 13 1998

...THREAT HEAVY RAINFALL ACROSS SOUTHEAST TEXAS THROUGH THIS
AFTERNOON...

A WEAK UPPER LEVEL DISTURBANCE COUPLED WITH A COLD FRONT ACROSS THE
NORTHERN SECTIONS AND ABUNDANT GULF MOISTURE WILL COMBINE TO PRODUCE
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS TODAY...MAINLY ALONG
AND SOUTH OF AN EDNA TO RICHMOND TO LIBERTY LINE.  OTHER CITIES
INCLUDED IN THE OUTLOOK AREA ARE...HOUSTON... ANAHUAC... GALVESTON...
ANGLETON AND BAY CITY.

AT 9 AM...WEATHER RADAR WAS SHOWING A LARGE AREA OF SHOWERS AND
THUNDERSTORMS JUST OFFSHORE AND SLOWLY PROGRESSING TO THE NORHTEAST.
SCATTERED SHOWERS WERE ALSO NOTED DEVELOPING ACROSS THE OUTLOOK AREA
AND EXPECTED TO BECOME MORE NUMEROUS THROUGHOUT THE DAY.  RAINFALL
AMOUNTS COULD AVERAGE FROM 1 TO 2 INCHES WITH ISOLATED TOTALS OF 3 TO
4 INCHES POSSIBLE.

WITH RECENT HEAVY RAINS ACROSS A LARGE PORTION OF SOUTHEAST
TEXAS...ADDITIONAL HEAVY RAINFALL COULD LEAD TO A THREAT OF FLASH
FLOODING.  THEREFORE...RESIDENTS ACROSS SOUTHEAST TEXAS ARE STRONGLY
URGED TO STAY ABREAST OF THIS DEVELOPING WEATHER SITUATION.  IF
CONDITIONS WORSEN AND APPEAR TO POINT TOWARD A FLOOD THREAT...A FLASH
FLOOD WATCH MAY BE REQUIRED.

STAY TUNED TO NOAA WEATHER RADIO OR OTHER WEATHER NEWS SOURCES FOR
FURTHER UPDATES.

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 13, 2:05 PM CSTSevere Thunderstorm WarningHGXMatagorda60 min
Jan 13, 3:05 PM CSTSevere Thunderstorm WarningHGXBrazoria, Matagorda75 min

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.