Alert archive / Texas / Flash Flood Warnings in 1998
Flash Flood Warning 1, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Jan 4, 1998, 4:07 PM CST for Brazoria County, Galveston County, Harris 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 counties it named.
The facts
- Issued
- Jan 4, 1998, 4:07 PM CST (22:07 UTC)
- Expired
- Jan 4, 1998, 8:15 PM CST
- In force
- 4 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
Counties Brazoria County, TX, Galveston County, TX, Harris County, TX
The radar
The Houston radar (KHGX), 13 km from the middle of the area, began a volume at 22:07 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, 10.1 hours before the alert went out and 208 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
- 156 J/kg
- Mixed-layer CIN
- -112 J/kg
- Mixed-layer LCL
- 513 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 167 m²/s²
- 0-3 km storm-relative helicity
- 175 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KHOU 042209 FFWHOU TXC039-167-201-050215- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 407 PM CST SUN JAN 4 1998 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 815 PM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST TEXAS ...NORTHERN BRAZORIA COUNTY...NORTHERN GALVESTON COUNTY ...SOUTHEASTERN HARRIS COUNTY AT 400 PM...DOPPLER WEATHER RADAR INDICATED A CLUSTER OF SLOW MOVING THUNDERSTORMS WHICH EXTENDED FROM MT. BELVIEU TO FREEPORT. RAINFALL IN THIS CLUSTER HAS AVERAGED 3 INCHES WITH ISOLATED TOTALS APPROACHING 5 INCHES. FLOODING HAS BEEN REPORTED IN FRIENDSWOOD...PEARLAND AND SOUTH HOUSTON. FEEDER ROADS ALONG THE BELTWAY AND GULF FREEWAY ARE WATER COVERED. WATER IS RISING RAPIDLY ON CLEAR CREEK AND MARYS CREEK AND FLOODING ALONG THESE WATERSHEDS CAN BE EXPECTED. AN ADDITIONAL 1 TO 2 INCHES OF RAIN IS POSSBILE THROUGH 6 PM. FLOOD WATERS HAVE RISEN RATHER DRAMATICALLY IN PORTIONS OF LEAGUE CITY AND WATER IS APPROACHING HOMES NEAR CORAL COVE COURT. THE RAIN IS EXPECTED TO END AROUND SUNSET AND FLOOD WATERS WILL RECEDE SHORTLY AFTER SUNSET. MOTORISTS SHOULD AVOID TRAVEL IN NORTHERN GALVESTON COUNTY UNTIL THE RAIN SUBSIDES. 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. &
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 4, 2:50 PM CST, 1 hour 17 minutes earlier.
Area forecast discussion, Jan 4, 2:50 PM CST, 1 hour 17 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 250 PM CST SUN JAN 4 1998 SO FAR TODAY THE TSRA HAVE BEEN SOUTHEAST OF THE HIGHWAY 59 CORRIDOR AND MAINLY IN THE BRAZORIA/GALVESTON/HARRIS/CHAMBERS COUNTY CLUSTER. 2 TO 3 INCH AMOUNTS IN THIS CLUSTER OF COUNTIES DURING THE LAST 3 HOURS. THE CLUSTER OF STORMS RESPONSIBLE FOR THIS RAINFALL SHOULD LIFT OFF TO THE NE THIS EVENING AS LF QUAD OF JET MOVES EAST AND RR OF JET IN N TX MOVES NE. FOG WILL CONTINUE THROUGHOUT THE NIGHT WITH SOME PATCHY DENSE FOG POSSIBLE. TEMPS WILL HOLD NEARLY STEADY THROUGHOUT THE NIGHT IN THE MID 60S AREAWIDE...EXCEPT PERHAPS ALONG THE COAST WHERE TEMPS MAY BEGIN TO RISE NEAR THE END OF THE PERIOD. CONVECTION SHOULD DIMINSH RAPIDLY AFTER 9 PM AND THEN REDEVELOP AGAIN ON MONDAY AS THE NEXT IN A SERIES OF S/W ROTATE OUT AHEAD OF THE MAIN TROUGH THAT SWINGS INTO THE AREA LATE TUESDAY. WILL CONTINUE THE THREAT OF LOCALLY HEAVY RAINFALL THROUGH THIS EVENING. PW RECOVER AFTER THE CURRENT S/W EXITS BUT WITH A MORE SWRLY FLOW AT 850. WILL HOLD OFF ON MENTION OF LOCALLY HEAVY RAIN FOR MONDAY ALTHOUGH THE FOLLOWING SHIFTS MAY HAVE TO INTRODUCE IT. PAC FRONT SHOULD ARRIVE LATE TUESDAY AFTERNOON/EVENING WITH THE MAIN TROUGH AXIS TO THE WEST SO WILL NEED TO KEEP POPS IN FOR EARLY WED. 45 PRELIMS... CLL C>F F>E/C E 067 072/065 70 3355 IAH C+F F>C/C E 064 072/065 72 6556 TSRA LOC HEAVY RAIN THIS EVENING GLS C+F F>C/E E 063 068/065 69 7667 TSRA
In the hours before
Special weather statement, Jan 4, 12:24 PM CST, 3 hours 43 minutes before
GMZ335-355-375-TXZ178-179-199-200-210>214-226-227-235>238-050310- HEAVY RAINFALL OUTLOOK FOR SOUTHEAST TEXAS NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1224 PM CST SUN JAN 4 1998 THE THREAT OF LOCALLY HEAVY RAIN WILL EXSIST OVER THE SOUTHERN PORTIONS OF SOUTHEAST TEXAS THIS AFTERNOON AND TONIGHT AS A VERY MOIST TROPICAL AIRMASS MOVES INTO THE REGION. THE SUB-TROPICAL JETSTREAM WILL LINK UP WITH THE POLAR JETSTREAM AS AN UPPER LEVEL DISTURBANCE MOVES THROUGH THE AREA CREATING CONDITIONS FAVORABLE FOR SLOW-MOVING THUNDERSTORMS TO PRODUCE HEAVY RAINFALL. THE THREATENED AREA WILL BE MAINLY SOUTH OF A LINE FROM COLUMBUS TO HEMPSTEAD TO LAKE LIVINGSTON. WIDELY SCATTERED RAINFALL ACCUMULATIONS WILL AVERAGE AROUND 1/2 INCH WITH ISOLATED TOTALS NEAR 3 INCHES. THE THREAT OF LOCALLY HEAVY RAINFALL SHOULD END AROUND MID-EVENING AS THE UPPER LEVEL SYSTEM LEAVES THE AREA TO THE EAST. PERSONS IN SOUTHEAST TEXAS SHOULD CHECK BACK WITH YOUR LOCAL NEWS SOURCES THIS AFTERNOON FOR UPDATES ON THIS DEVELOPING WEATHER SITUATION.
Special weather statement, Jan 4, 12:24 PM CST, 3 hours 43 minutes before
GMZ335-355-375-TXZ178-179-199-200-210>214-226-227-235>238-050310- HEAVY RAINFALL OUTLOOK FOR SOUTHEAST TEXAS NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1224 PM CST SUN JAN 4 1998 THE THREAT OF LOCALLY HEAVY RAIN WILL EXSIST OVER THE SOUTHERN PORTIONS OF SOUTHEAST TEXAS THIS AFTERNOON AND TONIGHT AS A VERY MOIST TROPICAL AIRMASS MOVES INTO THE REGION. THE SUB-TROPICAL JETSTREAM WILL LINK UP WITH THE POLAR JETSTREAM AS AN UPPER LEVEL DISTURBANCE MOVES THROUGH THE AREA CREATING CONDITIONS FAVORABLE FOR SLOW-MOVING THUNDERSTORMS TO PRODUCE HEAVY RAINFALL. THE THREATENED AREA WILL BE MAINLY SOUTH OF A LINE FROM COLUMBUS TO HEMPSTEAD TO LAKE LIVINGSTON. WIDELY SCATTERED RAINFALL ACCUMULATIONS WILL AVERAGE AROUND 1/2 INCH WITH ISOLATED TOTALS NEAR 3 INCHES. THE THREAT OF LOCALLY HEAVY RAINFALL SHOULD END AROUND MID-EVENING AS THE UPPER LEVEL SYSTEM LEAVES THE AREA TO THE EAST. PERSONS IN SOUTHEAST TEXAS SHOULD CHECK BACK WITH YOUR LOCAL NEWS SOURCES THIS AFTERNOON FOR UPDATES ON THIS DEVELOPING WEATHER SITUATION.
Special weather statement, Jan 4, 3:50 PM CST, 17 minutes before
GMZ335-355-375-TXZ178-179-199-200-210>214-226-227-235>238-050530- HEAVY RAINFALL OUTLOOK FOR SOUTHEAST TEXAS NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 350 PM CST SUN JAN 4 1998 THE THREAT OF LOCALLY HEAVY RAIN WILL CONTINUE OVER THE SOUTHERN PORTIONS OF SOUTHEAST TEXAS THROUGH TONIGHT. A VERY MOIST TROPICAL AIRMASS OVER THE REGION WILL COMBINE WITH AN INTERACTION BETWEEN THE SUB-TROPICAL AND POLAR JETSTREAMS TO PRODUCE LOCALLY HEAVY RAINFALL. A CLUSTER OF THUNDERSTORMS THAT PRODUCED 2 TO 4 INCHES OF RAIN IN NORTHERN GALVESTON COUNTY AND SOUTHEAST HARRIS COUNTY WILL SHIFT TO THE NORTHEAST WITH THE UPPER LEVEL DISTURBANCE. OTHER THUNDERSTORMS MAY DEVELOP OVER THE SOUTHERN PORTIONS OF THE REGION MAINLY SOUTH OF A LINE FROM WHARTON TO HOUSTON TO NEAR LIVINGSTON. SCATTERED RAINFALL ACCUMULATIONS WILL AVERAGE AROUND 1/4 INCH WITH ISOLATED TOTALS NEAR 3 INCHES. THE GREATER ACCUMULATIONS SHOULD BE MAINLY EAST OF A LINE FROM CLEVELAND TO DOWNTOWN HOUSTON TO FREEPORT. THIS HEAVY RAINFALL WILL LIKELY CAUSE PONDING OF WATER LOW-LYING AREAS AND MAY HAMPER TRAFFIC. PERSONS IN SOUTHEAST TEXAS SHOULD CHECK BACK WITH YOUR LOCAL NEWS SOURCES THIS EVENING FOR UPDATES ON THIS DEVELOPING WEATHER SITUATION.
Special weather statement, Jan 4, 3:50 PM CST, 17 minutes before
GMZ335-355-375-TXZ178-179-199-200-210>214-226-227-235>238-050530- HEAVY RAINFALL OUTLOOK FOR SOUTHEAST TEXAS NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 350 PM CST SUN JAN 4 1998 THE THREAT OF LOCALLY HEAVY RAIN WILL CONTINUE OVER THE SOUTHERN PORTIONS OF SOUTHEAST TEXAS THROUGH TONIGHT. A VERY MOIST TROPICAL AIRMASS OVER THE REGION WILL COMBINE WITH AN INTERACTION BETWEEN THE SUB-TROPICAL AND POLAR JETSTREAMS TO PRODUCE LOCALLY HEAVY RAINFALL. A CLUSTER OF THUNDERSTORMS THAT PRODUCED 2 TO 4 INCHES OF RAIN IN NORTHERN GALVESTON COUNTY AND SOUTHEAST HARRIS COUNTY WILL SHIFT TO THE NORTHEAST WITH THE UPPER LEVEL DISTURBANCE. OTHER THUNDERSTORMS MAY DEVELOP OVER THE SOUTHERN PORTIONS OF THE REGION MAINLY SOUTH OF A LINE FROM WHARTON TO HOUSTON TO NEAR LIVINGSTON. SCATTERED RAINFALL ACCUMULATIONS WILL AVERAGE AROUND 1/4 INCH WITH ISOLATED TOTALS NEAR 3 INCHES. THE GREATER ACCUMULATIONS SHOULD BE MAINLY EAST OF A LINE FROM CLEVELAND TO DOWNTOWN HOUSTON TO FREEPORT. THIS HEAVY RAINFALL WILL LIKELY CAUSE PONDING OF WATER LOW-LYING AREAS AND MAY HAMPER TRAFFIC. PERSONS IN SOUTHEAST TEXAS SHOULD CHECK BACK WITH YOUR LOCAL NEWS SOURCES THIS EVENING FOR UPDATES ON THIS DEVELOPING WEATHER SITUATION.
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.