Alert archive / Texas / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 9, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jan 11, 1998, 9:23 PM CST for San Jacinto County, Texas. It was in force for 27 min. 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 11, 1998, 9:23 PM CST (03:23 UTC)
- Expired
- Jan 11, 1998, 9:50 PM CST
- In force
- 27 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County San Jacinto County, TX
The radar
The Houston radar (KHGX), 124 km from the middle of the area, began a volume at 03:23 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 11, 4:45 PM CST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 3.4 hours before the alert went out and 196 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
- 16 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 953 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 253 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 severe thunderstorm 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 severe thunderstorm warning went out at Jan 11, 8:27 PM CST, 56 minutes earlier.
Area forecast discussion, Jan 11, 8:27 PM CST, 56 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 827 PM CST SUN JAN 11 1998 A COUPLE OF STRONG TO SEVERE STORMS OVER GRIMES/MONTGOMERY COUNTY MOVING EAST. SOUTHERNMOST STORM TRAVELLING TO THE RIGHT WITH A STRONG MESOCYCLONE SIGNATURE. S/W PASSING BY TO THE NORTH WITH DRYING EVIDENT SO EXPECT THE SEVERE THREAT TO END AFTER 2 AM OR SO BUT THE CONVECTION WILL CONTINUE WITH THE SSW LLJ OVER THE AREA...(ONLY HOPE IS THE CAP GETS STRONGER.) THE DRY LINE WILL LIKELY CONTINUE TO RETREAT LEAVING THE OLD STATIONARY FRONTAL BOUNDARY AS A FOCUS FOR MORE SHOWERS AND THUNDERSTORMS TO DEVELOP ALONG AS THE NEXT S/W OVER NM APPROACHES THE AREA IN THE MORNING. WILL LEAVE IN THE MENTION OF SVR AND HOLD OFF ON ALTER TORNADO WATCH. WOULD LIKE TO ADD THE MENTION OF LOCALLY HEAVY RAINFALL POSSIBLE FOR THE NORTHERN ZONES. WILL ALSO INCLUDE CHICKEN 20 POPS FOR MONDAY FOR THE TIME BEING. 45 PRELIMS... NE T/E>B B/>E 053/072 048/070 7202 LOCALLY HEAVY RAINFALL POSSIBLE CLL T/E>B B/>E 051/074 049/070 7202 LOCALLY HEAVY RAINFALL POSSIBLE IAH T/E>B >E/E 055/074 052/071 6223 GLS T/E>B >E/E 060/069 058/069 6223
In the hours before
Special weather statement, Jan 11, 4:32 PM CST, 4 hours 51 minutes before
TXZ211-237-210-227-198-213-163-200-511-236-199-179-178-164-177- 212-197-226-196-195-214-238-235-176-120430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 432 PM CST SUN JAN 11 1998 ...TORNADO WATCH ISSUED FOR SOUTHEAST TEXAS UNTIL 1000 PM... A TORNADO WATCH IS IN EFFECT FOR ALL OF SOUTHEAST TEXAS FROM 445 PM UNTIL 10 PM THIS EVENING. THE COUNTIES INCLUDED IN THE WATCH AREA...BURLESON...BRAZOS...MADISON...HOUSTON...WASHINGTON... GRIMES...WALKER...TRINITY...COLORADO...AUSTIN...WALLER...MONTGOMERY... SAN JACINTO...POLK...JACKSON...WHARTON...FORT BEND...HARRIS... LIBERTY...MATAGORDA...BRAZORIA...GALVESTON AND CHAMBERS COUNTIES. SCATTERED SHOWERS AND THUNDERSTORMS OVER CENTRAL TEXAS WILL SPREAD OVER EAST TEXAS THROUGH THE EVENING...WITH THE POTENTIAL OF SOME STORMS BECOMING SEVERE. IN ADDITION...ISOLATED THUNDERSTORMS MAY PRODUCE LOCALLY HEAVY RAINFALL UP TO 2 INCHES WHICH WILL AGGRAVATE THE FLOODING PROBLEMS OVER ALREADY SATURATED GROUNDS. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR THE LATEST STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Jan 11, 4:32 PM CST, 4 hours 51 minutes before
TXZ211-237-210-227-198-213-163-200-511-236-199-179-178-164-177- 212-197-226-196-195-214-238-235-176-120430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 432 PM CST SUN JAN 11 1998 ...TORNADO WATCH ISSUED FOR SOUTHEAST TEXAS UNTIL 1000 PM... A TORNADO WATCH IS IN EFFECT FOR ALL OF SOUTHEAST TEXAS FROM 445 PM UNTIL 10 PM THIS EVENING. THE COUNTIES INCLUDED IN THE WATCH AREA...BURLESON...BRAZOS...MADISON...HOUSTON...WASHINGTON... GRIMES...WALKER...TRINITY...COLORADO...AUSTIN...WALLER...MONTGOMERY... SAN JACINTO...POLK...JACKSON...WHARTON...FORT BEND...HARRIS... LIBERTY...MATAGORDA...BRAZORIA...GALVESTON AND CHAMBERS COUNTIES. SCATTERED SHOWERS AND THUNDERSTORMS OVER CENTRAL TEXAS WILL SPREAD OVER EAST TEXAS THROUGH THE EVENING...WITH THE POTENTIAL OF SOME STORMS BECOMING SEVERE. IN ADDITION...ISOLATED THUNDERSTORMS MAY PRODUCE LOCALLY HEAVY RAINFALL UP TO 2 INCHES WHICH WILL AGGRAVATE THE FLOODING PROBLEMS OVER ALREADY SATURATED GROUNDS. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR THE LATEST STATEMENTS AND POSSIBLE WARNINGS.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 11, 6:31 PM CST | Tornado Warning | HGX | Brazos, Burleson | 59 min |
| Jan 11, 6:36 PM CST | Tornado Warning | HGX | Washington | 69 min |
| Jan 11, 7:01 PM CST | Tornado Warning | HGX | Grimes | 59 min |
| Jan 11, 7:42 PM CST | Tornado Warning | HGX | Montgomery | 48 min |
| Jan 11, 8:31 PM CST | Tornado Warning | HGX | Montgomery | 34 min |
| Jan 11, 9:38 PM CST | Severe Thunderstorm Warning | HGX | Polk | 57 min |
| Jan 11, 9:38 PM CST | Severe Thunderstorm Warning | HGX | Polk | 67 min |
| Jan 12, 1:34 AM CST | Tornado Warning | HGX | Liberty | 61 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1998Every severe thunderstorm 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.