Alert archive / Texas / Flash Flood Warnings in 1998
Flash Flood Warning 29, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Jan 21, 1998, 9:51 PM CST for Harris 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 21, 1998, 9:51 PM CST (03:51 UTC)
- Expired
- Jan 22, 1998, 12:50 AM CST
- In force
- 3 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Harris County, TX
The radar
The Houston radar (KHGX), 52 km from the middle of the area, began a volume at 03:50 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 00:00Z, 3.9 hours before the alert went out and 213 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.
- Mixed-layer CAPE
- 1567 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 528 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 6.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KHOU 220350 FFWHOU TXC201-220650- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 951 PM CST WED JAN 21 1998 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1250 AM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEASTERN TEXAS ...SOUTHEASTERN HARRIS COUNTY VERY HEAVY RAIN HAS FALLEN DURING THE PAST 2-3 HOURS ACROSS SOUTHEAST HARRIS COUNTY WITH RAINFALL AMOUNTS ESTIMATED OF 2-3 INCHES. AN ADDITIONAL 1-2 INCHES OF RAIN IS POSSIBLE BEFORE MIDNIGHT WHICH COULD INCREASE THE FLOODING PROBLEM IN SOUTHEAST HARRIS COUNTY. PASADENA WAS REPORTING NUMEROUS ROADS THROUGHOUT THE CITY UNDERWATER AND DRIVING WAS DIFFICULT. CONDITIONS WILL CONTINUE TO WORSEN AS ADDITIONAL RAINS MOVE ACROSS THE REGION. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLASH FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE 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. &
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 21, 7:55 PM CST, 1 hour 56 minutes earlier.
Area forecast discussion, Jan 21, 7:55 PM CST, 1 hour 56 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 755 PM CST WED JAN 21 1998 QUITE A HECTIC LATE AFTN-EVE W/OUTBREAK OF SUPERCELLS. 00Z LCH SOUNDING QUITE POTENT W/ABOUT 2000J/KG. SR HELICITY 144. CONVECTION SHOULD CONT ALL OF FA TONITE. RECOMMEND IST PD MINOR CHANGES AS FOLLOWS... CLL AREA...WND BCMG NORTHEAST. IAH AREA...WIND BECMG NORTHEAST LATE. GLS AREA...LOW UPPER 50S INLAND...NR 60 COAST. 37
In the hours before
Special weather statement, Jan 21, 8:12 PM CST, 1 hour 39 minutes before
TXZ178-179-199-200-213-214-226-227-235>238-220805- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 812 PM CST WED JAN 21 1998 SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MUCH OF SOUTHEAST TEXAS GENERALLY SOUTH AND EAST OF A LINE FROM EDNA TO WHARTON TO CONROE TO LIVINGSTON LINE. THIS THUNDERSTORM WATCH REPLACES THE TORNADO WATCH THAT EXPIRED AT 800 PM. THE FOLLOWING COUNTIES IN SOUTHEAST TEXAS ARE INCLUDED IN THE THUNDERSTORM WATCH...JACKSON...WHARTON...BRAZORIA...CHAMBERS...FORT BEND...GALVESTON...HARRIS...LIBERTY....MATAGORDA...MONTGOMERY... POLK...SAN JACINTO AND ADJACENT COASTAL WATERS. A WEAK COLD FRONT WILL MOVE SLOWLY SOUTHEAST INTO SOTUHEAST TEXAS TONIGHT. THIS FRONT WILL BE MOVING INTO A VERY WARM MOIST UNSTABLE AIRMASS. THIS COMBINATION WILL CONTINUE TO LEAD TO DEVELOPMENT OF ADDITIONAL THUNDERSTORMS TONIGHT SOME POSSIBLY SEVERE CONTAINING LARGE HAIL AND DAMAGING WINDS. IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A STORM APPROACHES. MOTORISTS SHOULD REMAIN ALERT FOR REDUCED VISIBILITIES DURING DOWNPOURS OF RAIN. STREETS MAY FLOOD QUICKLY.
Special weather statement, Jan 21, 8:12 PM CST, 1 hour 39 minutes before
TXZ178-179-199-200-213-214-226-227-235>238-220805- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 812 PM CST WED JAN 21 1998 SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MUCH OF SOUTHEAST TEXAS GENERALLY SOUTH AND EAST OF A LINE FROM EDNA TO WHARTON TO CONROE TO LIVINGSTON LINE. THIS THUNDERSTORM WATCH REPLACES THE TORNADO WATCH THAT EXPIRED AT 800 PM. THE FOLLOWING COUNTIES IN SOUTHEAST TEXAS ARE INCLUDED IN THE THUNDERSTORM WATCH...JACKSON...WHARTON...BRAZORIA...CHAMBERS...FORT BEND...GALVESTON...HARRIS...LIBERTY....MATAGORDA...MONTGOMERY... POLK...SAN JACINTO AND ADJACENT COASTAL WATERS. A WEAK COLD FRONT WILL MOVE SLOWLY SOUTHEAST INTO SOTUHEAST TEXAS TONIGHT. THIS FRONT WILL BE MOVING INTO A VERY WARM MOIST UNSTABLE AIRMASS. THIS COMBINATION WILL CONTINUE TO LEAD TO DEVELOPMENT OF ADDITIONAL THUNDERSTORMS TONIGHT SOME POSSIBLY SEVERE CONTAINING LARGE HAIL AND DAMAGING WINDS. IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A STORM APPROACHES. MOTORISTS SHOULD REMAIN ALERT FOR REDUCED VISIBILITIES DURING DOWNPOURS OF RAIN. STREETS MAY FLOOD QUICKLY.
Local storm report, Jan 21, 9:50 PM CST, 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TEXAS
950 PM CST WED JAN 21 1998
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0142 PM EAGLE LAKE TX 1.25 INCH HAIL
01/21/98 COLORADO
0305 PM DEANVILLE TX .75 INCH HAIL
01/21/98 BURLESON
0340 PM CALDWELL TX 1.75 INCH HAIL
01/21/98 BURLESON
0340 PM LA SALLE TX TORNADO
01/21/98 JACKSON UNION PACIFIC RAILROAD
REPORTED TORNADO TOUCHDOWN
NEAR THE RAILROAD TRACKS.
NO INJURIES OR DAMAGE
REPORTED.
0408 PM LYONS TX 2.75 INCH HAIL
01/21/98 BURLESON
0425 PM WELLBORN TX .88 INCH HAIL
01/21/98 BRAZOS HAIL BETWEEN MILLICAN AND
WELLBORN
0520 PM SHIRO TX 1.75 INCH HAIL
01/21/98 GRIMES
0525 PM MIDWAY TX TORNADO
01/21/98 MADISON TORNADO TOUCHDOWN AT OSR &
I45 ABOUT 10 MILES NW
MIDWAY. RESTUARANT ROOF
TORN OFF.
0532 PM NEEDVILLE TX 1 INCH HAIL
01/21/98 FORT BEND 90 PERCENT OF THE GROUND
COVERED WITH HAIL
0540 PM RICHARDS TX TORNADO
01/21/98 GRIMES TORNADO TOUCHDOWN REPORTED
BY NAVASOTA PD ON FM 149
EAST OF RICHARDS
0545 PM NEEDVILLE TX .88 INCH HAIL
01/21/98 FORT BEND
0600 PM ROANS PRAIRIE TX 1.75 INCH HAIL
01/21/98 GRIMES
0627 PM HUNTSVILLE TX 1 INCH HAIL
01/21/98 WALKER SEVERAL INCHES OF HAIL
COVERING GROUND ON HWY 75
(4-5) MILES SOUTH OF
HUNTSVILLE.
0650 PM COLDSPRING TX .75 INCH HAIL
01/21/98 SAN JACINTO
0653 PM HOUSTON TX .75 INCH HAIL
01/21/98 HARRIS KEY MAP 532
0705 PM HOUSTON TX .75 INCH HAIL
01/21/98 HARRIS HAIL NEAR HOBBY AIRPORT
0725 PM HOUSTON TX 1 INCH HAIL
01/21/98 HARRIS HAIL NEAR HOBBY AIRPORT
0740 PM MORGANS POINT TX .88 INCH HAIL
01/21/98 HARRIS
0740 PM LA PORTE TX 1 INCH HAIL
01/21/98 HARRIS
0744 PM SHOREACRES TX .88 INCH HAIL
01/21/98 HARRIS
0810 PM COVE TX 1.75 INCH HAIL
01/21/98 CHAMBERS
0835 PM ROSHARON TX .75 INCH HAIL
01/21/98 BRAZORIA
0850 PM HOUSTON TX .5 INCH HAIL
01/21/98 HARRIS HAIL IN THE GALLERIA AREA
0858 PM HANKAMER TX 1 INCH HAIL
01/21/98 CHAMBERS
0858 PM ANAHUAC TX 1 INCH HAIL
01/21/98 CHAMBERS
0910 PM WINNIE TX 1.75 INCH HAIL
01/21/98 CHAMBERS HAIL 7 MILES WEST OF
WINNIE ON I-10
0944 PM WINNIE TX .75 INCH HAIL
01/21/98 CHAMBERSThe office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 21, 6:07 PM CST | Tornado Warning | HGX | Matagorda, Wharton | 68 min |
| Jan 21, 6:18 PM CST | Flash Flood Warning | HGX | Grimes, Walker | 2 hr |
| Jan 21, 6:21 PM CST | Tornado Warning | HGX | Grimes, Montgomery | 49 min |
| Jan 21, 6:29 PM CST | Tornado Warning | HGX | San Jacinto, Walker | 61 min |
| Jan 21, 6:33 PM CST | Flash Flood Warning | HGX | Fort Bend | 3 hr |
| Jan 21, 6:46 PM CST | Severe Thunderstorm Warning | HGX | Brazoria, Harris | 64 min |
| Jan 21, 6:58 PM CST | Severe Thunderstorm Warning | HGX | Polk | 62 min |
| Jan 21, 7:38 PM CST | Severe Thunderstorm Warning | HGX | Chambers | 62 min |
| Jan 21, 8:19 PM CST | Severe Thunderstorm Warning | HGX | Houston | 61 min |
| Jan 21, 8:25 PM CST | Severe Thunderstorm Warning | HGX | Brazoria | 65 min |
| Jan 21, 8:35 PM CST | Severe Thunderstorm Warning | HGX | Chambers, Liberty | 65 min |
| Jan 21, 8:48 PM CST | Severe Thunderstorm Warning | HGX | Galveston, Harris | 62 min |
| Jan 21, 9:34 PM CST | Flash Flood Warning | HGX | Chambers | 3 hr |
| Jan 21, 9:40 PM CST | Severe Thunderstorm Warning | HGX | Chambers | 35 min |
| Jan 21, 10:27 PM CST | Severe Thunderstorm Warning | HGX | Harris | 33 min |
| Jan 21, 10:36 PM CST | Flash Flood Warning | HGX | Chambers | 64 min |
| Jan 21, 10:36 PM CST | Severe Thunderstorm Warning | HGX | Chambers | 64 min |
| Jan 21, 10:53 PM CST | Severe Thunderstorm Warning | HGX | Chambers | 67 min |
| Jan 22, 12:33 AM CST | Flash Flood Warning | HGX | Chambers, Harris | 4 hr |
| Jan 22, 4:27 AM CST | Flash Flood Warning | HGX | Chambers | 3 hr |
| Jan 22, 9:05 AM CST | Severe Thunderstorm Warning | HGX | Jackson | 55 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.