Alert archive / Texas / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 9, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 30, 1989, 1:42 AM CDT for Harris County, Liberty County, Texas. It was in force for 63 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 30, 1989, 1:42 AM CDT (06:42 UTC)
- Expired
- Apr 30, 1989, 2:45 AM CDT
- In force
- 63 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
Counties Harris County, TX, Liberty County, TX
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 30, 2:15 AM CDT | Thunderstorm Wind 0 | Harris, TX |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 6.7 hours before the alert went out and 183 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
- 2157 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 915 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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.
In the hours before
Special weather statement, Apr 29, 10:15 PM CDT, 3 hours 27 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 1020 PM CDT SAT APR 29 1989 ...LINE OF VERY STRONG THUNDERSTORMS APPROACHING SOUTHEAST TEXAS... ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL MIDNIGHT FOR PART OF SOUTH CENTRAL TEXAS...INCLUDING COLORADO...AUSTIN...WASHINGTON...GRIMES AND HOUSTON COUNTIES... WEATHER SERVICE RADAR INDICATED A LINE OF VERY STRONG THUNDERSTORMS FROM NEAR VICTORIA TO NEAR COLLEGE STATION TO CROCKETT. THESE STORMS WERE MOVING EAST AT 15 TO 20 MPH. MANY OF THESE THUNDERSTORMS CAUSED SEVERE WEATHER THROUGHOUT THE HILL COUNTRY...SAN ANTONIO...AUSTIN AND WACO AREAS EARLIER THIS EVENING. STRONG GUSTY WINDS...HEAVY RAIN...DANGEROUS LIGHTNING AND HAIL CAN BE EXPECTED WITH THE PASSAGE OF THESE STORMS. LOCATIONS IN SOUTHEAST TEXAS THAT WILL PROBABLY BE AFFECTED BY MIDNIGHT INCLUDE CROCKETT...HUNTSVILLE...BRENHAM...BELLVILLE AND COLUMBUS. PEOPLE IN SOUTHEAST TEXAS ARE URGED TO STAY TUNED T O NOAA WEATHER RADIO... LOCAL RADIO OR TELEVISION STATIONS TO GET UP TO THE MINUTE INFORMATION ON THIS SEVERE WEATHER EVENT.
Special weather statement, Apr 29, 11:38 PM CDT, 2 hours 4 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 1140 PM CDT SAT APR 29 1989 ...THUNDERSTORMS APPROACHING SOUTHEAST TEXAS ARE WEAKENING... ...THE SEVERE THUNDERSTORM WATCH FOR PART OF SOUTH CENTRAL TEXAS... INCLUDING COLORADO...AUSTIN...WASHINGTON...GRIMES AND HOUSTON COUNTIES... EXPIRES AT MIDNIGHT... THE LINE OF STRONG THUNDERSTORMS THAT AFFECTED PARTS OF SOUTH CENTRAL AND EAST TEXAS EARLIER TONIGHT HAVE WEAKENED AS THEY APPROACH SOUTHEAST TEXAS. WEATHER SERVICE RADAR INDICATED STRONG THUNDERSTORMS FROM COLUMBUS TO SOUTH OF VICTORIA. THE STRONGEST STORM WAS ABOUT 20 MILES SOUTH OF COLUMBUS. OTHER THUNDERSTORMS WERE FROM WEST OF HUNTSVILLE TO NEAR CROCKETT. MOVEMENT WAS EAST AT 15 TO 20 MPH. STAY TUNED TO YOUR NOAA WEATHER RADIO...LOCAL RADIO OR TELEVISION FOR ADDITIONAL STATEMENTS.
Special weather statement, Apr 30, 12:52 AM CDT, 50 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 1140 PM CDT SAT APR 29 1989 ...THUNDERSTORMS APPROACHING SOUTHEAST TEXAS ARE WEAKENING... ...THE SEVERE THUNDERSTORM WATCH FOR PART OF SOUTH CENTRAL TEXAS... INCLUDING COLORADO...AUSTIN...WASHINGTON...GRIMES AND HOUSTON COUNTIES... EXPIRES AT MIDNIGHT... THE LINE OF STRONG THUNDERSTORMS THAT AFFECTED PARTS OF SOUTH CENTRAL AND EAST TEXAS EARLIER TONIGHT HAVE WEAKENED AS THEY APPROACH SOUTHEAST TEXAS. WEATHER SERVICE RADAR INDICATED STRONG THUNDERSTORMS FROM COLUMBUS TO SOUTH OF VICTORIA. THE STRONGEST STORM WAS ABOUT 20 MILES SOUTH OF COLUMBUS. OTHER THUNDERSTORMS WERE FROM WEST OF HUNTSVILLE TO NEAR CROCKETT. MOVEMENT WAS E5AST AT 15 TO 20 MPH. STAY TUNED TO YOUR NOAA WEATHER RADIO...LOCAL RADIO OR TELEVISION FOR ADDITIONAL STATEMENTS.
Special weather statement, Apr 30, 1:02 AM CDT, 40 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 102 AM CDT SUN APR 30 1989 ...LINE OF THUNDERSTORMS MOVING INTO SOUTHEAT TEXAS CONTINUES TO WEAKEN.. AT 1 AM...THE MOST ACTIVE PART OF THE LINE OF THUNDERSTORMS WAS MOVING INTO WESTERN HARRIS AND FORT-BEND COUNTIES..MOVING EAST AT 20 MPH. INTENSITIES CONTINUE TO WEAKEN. HOWEVER MUCH OF THE GREATER HOUSTON AREA AND FORT-BEND COUNTIES CAN EXPECT SOME BRIEFLY HEAVY RAINS AND GUSTY WINDS ALONG WITH FREQUENT LIGHTNING BETWEEN 1 AND 2 AM AS THE THUNDERSTORMS MOVE THROUGH THE AREA. ELSEWHERE...SHOWERS AND THUNDERSHOWERS STRETCH FROM THE COAST AT PALACIOS...PAST THE HUNTSVILLE AREA AND NORTHWARD TOWARDS LONGVIEW. THIS LARGE AREA OF RAIN AND IMBEDDED THUNDERSHOWERS WILL CONTINUE TO SPREAD EASTWARD INTO MUCH OF SOUTHEAST TEXAS DURING THE EARLY MORNING HOURS. BUT WITH INTENSITIES EXPECTED TO FURTHER DIMINISH MANY COUNTIES MAY ONLY GET SOME LIGHT RAINS...AND SOME MAY NOT RECEIVE JANY.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 2:21 AM CDT | Tornado Warning | HGX | Galveston | 54 min |
| Apr 30, 3:04 AM CDT | Severe Thunderstorm Warning | HGX | Chambers | 56 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1989Every severe thunderstorm warning in 1989
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.