Alert archive / Texas / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 39, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 27, 1990, 11:00 PM CDT for Brazoria County, Texas. It was in force for 22 min.
The area
The counties it named.
The facts
- Issued
- Apr 27, 1990, 11:00 PM CDT (04:00 UTC)
- Expired
- Apr 27, 1990, 11:22 PM CDT
- In force
- 22 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Brazoria County, TX
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 4.0 hours before the alert went out and 240 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
- 934 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 1032 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KHOU 280359 SVRHOU TXC039-280430- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE HOUSTON TX 1100 PM CDT FRI APR 27 1990 THE NATIONAL WEATHER SERVICE IN HOUSTON HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 1130 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST TEXAS ...SOUTHERN BRAZORIA COUNTY AND FOR MARINE INTERESTS ON THE COASTAL WATERS FROM ...SAN LUIS PASS TO FREEPORT RADAR SHOWS THAT THE SEVERE THUNDERSTORM THAT MOVED INTO NORTHERN BRAZORIA COUNTY AT 10 PM HAS MOVED INTO THE SOUTHCENTRAL PART OF THE COUNTY...AND THE WARNING FOR BRAZORIA COUNTY HAS BEEN EXTENDED UNTIL 1130 PM CDT. THERE WAS A REPORT FROM THE SHERRIFS DEPARTMENT OF POSSIBLE TORNADO TOUCH DOWN ABOUT 1035 PM IN WEST COLUMBIA WHEN THE STORM MOVED THROUGH THERE. SOME DAMAGE TO HOUSES...BUT REPORT INCOMPLETE AT THIS TIME. REMEMBER SEVERE THUND9ERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
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 27, 5:54 PM CDT, 5 hours 6 minutes before
TXZ047-049-037-032-046-045-280045- SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 544 PM CDT FRI APR 27 1990 A TORNADO WATCH HAS BEEN ISSUED FOR ALL OF SOUTHEAST TEXAS FROM 6 PM CDT UNTIL MIDNIGHT. THIS WATCH INCLUDES THE HOUSTON/GALVESTON METROPOLITAN AREAS. NO SEVERE THUNDERSTORMS ARE CURRENTLY IN SOUTHEAST TEXAS BUT THUNDERSTORMS ARE RAPIDLY DEVELOPING FROM A LINE JUST EAST OF COLLEGE TO EAST OF WACO. THESE THUNDERSTORMS ARE MOVING SOUTHEAST AT 35 MILES AN HOUR AND WILL BE EFFECTING HOUSTON, WALKER, AND GRIMES COUNTIES WITHIN THE NEXT HOUR.
Special weather statement, Apr 27, 7:06 PM CDT, 3 hours 54 minutes before
TXZ047-032-037-045>047-049-281000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 700 PM CDT FRI APR 27 1990 ...A TORNADO WATCH IS IN EFFECT FOR ALL OF SOUTHEAST TEXAS FROM 6 PM CDT UNTIL MIDNIGHT. THIS WATCH INCLUDES THE HOUSTON/GALVESTON METROPOLITAN AREAS.... ...A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR HOUSTON COUNTY UNTIL 715 PM...AND FOR GRIMES COUNTY UNTIL 730 PM... RADAR SHOWS A LINE OF STRONG THUNDERSTORMS MOVING INTO THE ABOVE TWO COUNTIES FROM THE NORTHWEST...MOVING SOUTHEAST AT 25 MPH. THERE HAVE BEEN REPORTS OF TORNADOES ON THE GROUND IN BRAZOS COUNTY DURING THE PAST 15 MINUTES...NEAR OR SLIGHTLY EAST OF BRYAN AND COLLEGE STATION. RESIDENTS IN THE WARNED COUNTIES SHOULD BE ALERT FOR POSSIBLE SEVERE THUNDERSTORMS APPROACHING FROM THE NORTHWEST AND BE READY TO TAKE SHELTER IF SEVERE WEATHER IS SIGHTED. . RESIDENTS IN COUNTIES ADJACENT TO HOUSTON AND GRIMES COUNTIES SHOULD BE ALERT...SINCBE ADDITIONAL WARNINGS MAY BE ISSUED OVER THE NEXT FEW HOURS AS THE LINE OF STORMS MOVES DEEPER INTO SOUTHEAST TEXAS. STAY TUNED TO YOUR WEATHER RADIO...LOCAL RADIO AND TV...FOR THE LATEST UPDATES.
Local storm report, Apr 27, 9:10 PM CDT, 1 hour 50 minutes before
ATTN SELS A HOU
STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON TX
911 PM CDT FRI APR 27 1990
...STORM REPORT FOR FRI APR 27 1990...PRELIMINARY....
WALKER COUNTY... 7:12 PM CDT...TRINITY POLICE DEPARTMENT REPORTED A TORNADO
15 MILES WEST OF HUNSTVILLE.
GRIMES COUNTY... 7:19 PM CDT...GRIMES COUNTY SHERRIF REPORTS FUNNEL CLOUD
MOVING TOWARDS ANDERSON. MARBEL SIZE HAIL.
GRIMES COUNTY... 7:38 PM CDT...BASEBALL SIZE HAIL REPORTED NEAR NAVASOTA
IN GRIMES COUNTY.
WALKER COUNTY... 7:51 PM CDT...ONE INCH HAIL FALLING AT NEW WAVERLY..REPORTED
BY RADIO STATION IN COUNTY.
.
MONTGOMERY COUNTY...8:10 PM CDT...MARBLE SIZE HAIL REPORTED IN MAGNOLIA
BY SHERRIFS DEPARTMENT.
MONTGOMER COUNTY... 8:10 PM CDT...SHERRIFS DEPARTMENT REPORTS TORNADO
TOUCHED DOWN BRIEFLY NEAR SPLENDORA AND RECEDED
BACK INTO CLOUD.
HARRIS COUNTY... 8:49..TO 9:01 PM CDT...IN NORTHWEST HARRIS COUNTY...
3/8 INCH HAIL JOHNS ROAD AND WHY 290.
MARBLE SIZE HAIL HWY 6 AND HWY 290.
FUNNEL REPORTED HWY 6 AND HWY 290.
GOLF BALL SIZE HAIL WHY 6 AND WHY 290.
WIND SPEED OVER 50 MPH NEAR COPPERFIELD...JOHNS ROAD.Special weather statement, Apr 27, 10:34 PM CDT, 26 minutes before
TXZ047-032-037-045>047-049-281000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 1034 PM CDT FRI APR 27 1990 ...THE TORNADO WATCH HAS BEEN CANCELED FOR MOST OF SOUTHEAST TEXAS INCLUDING THE HOUSTON HOUSTON AREA...AND INCLUDING THE FOLLOWING COUNTIES.. HOUSTON...TRINITY...POLK...SAN-JACINTO...WALKER...GRIMES...MONTGOMERY... WASHINGTON...AUSTIN...WALLER...COLORADO...WHARTON...FORT-BEND...LIBERTY... AND HARRIS... ...THE TORNADO WATCH CONTINUES IN EFFECT UNTIL MIDNIGHT FOR MATAGORDA.. ..BRAZORIA...GALVESTON..AND CHAMBERS COUNTIES.. THE LINE OF THUNDERSTORMS HAS MOVED SOUTH OF THE CLEARED COUNTIES AND AT 1030 PM WAS MOVING INTO COASTAL COUNTIES THAT STILL REMAIN UNDER THE WA TCH AREA. ON THIS TRACK THE STORMS WILL MOVE OFFSHORE OF THE UPPER TEXAS COAST BETWEEN NOW AND MIDNIGHT. . STAY TUNED TO WEATHER RADIO...LOCAL RADIO AND TV...FOR THE LATEST UPDATES.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 7:04 PM CDT | Severe Thunderstorm Warning | HGX | Walker | 56 min |
| Apr 27, 7:18 PM CDT | Severe Thunderstorm Warning | HGX | Houston | 42 min |
| Apr 27, 7:31 PM CDT | Severe Thunderstorm Warning | HGX | Trinity | 59 min |
| Apr 27, 7:34 PM CDT | Tornado Warning | HGX | Grimes | 56 min |
| Apr 27, 8:24 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 66 min |
| Apr 27, 9:21 PM CDT | Severe Thunderstorm Warning | HGX | Liberty | 69 min |
| Apr 27, 9:30 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 45 min |
| Apr 27, 9:48 PM CDT | Severe Thunderstorm Warning | HGX | Fort Bend | 57 min |
| Apr 27, 9:59 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria | 61 min |
| Apr 27, 10:00 PM CDT | Severe Thunderstorm Warning | HGX | Galveston | 60 min |
| Apr 27, 10:28 PM CDT | Severe Thunderstorm Warning | HGX | Galveston | 2 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 1990Every severe thunderstorm warning in 1990
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.