Alert archive / Texas / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 28, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 27, 1990, 6:28 PM CDT for Grimes County, Texas. It was in force for 62 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 27, 1990, 6:28 PM CDT (23:28 UTC)
- Expired
- Apr 27, 1990, 7:30 PM CDT
- In force
- 62 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Grimes 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 27, 7:34 PM CDT | Thunderstorm Wind 0 | Grimes, 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
Longview/Gregg, TX (KGGG), launched 12:00Z, 11.5 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
- 81 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 634 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- -18 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 27, 4:37 PM CDT, 1 hour 51 minutes before
TXZ032-046-045-272345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 437 PM CDT FRI APR 27 1990 ...A TORNADO WATCH IS IN EFFECT FOR NORTHEAST TEXAS AND A PART OF SOUTHEAST TEXAS INCLUDING HOUSTON...TRINITY...POLK...AND WAKLER COUNTIES UNTIL 1000 PM CDT THIS EVENING... ALTHOUGH NO THUNDERSTORMS WERE INDICATED IN THESE COUNTIES AT THIS TIME...CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE WEATHER AND TORNADOES IN AND CLOSE TO THE WATCH AREA. AT 430 PM CDT RADAR INDICATED SCATTERED THUNDERSTORMS NORTH AND NORTHE OF THE WACO AREA AND MOVING TO THE SOUTHEAST AT 35 MILES AND HOUR. THESE COULD BEGIN TO EFFECT HOUSTON COUNTY WITH IN THE NEXT TWO HOURS.
Special weather statement, Apr 27, 5:54 PM CDT, 34 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.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 6:16 PM CDT | Severe Thunderstorm Warning | HGX | Houston | 59 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.