Alert archive / Texas / Flash Flood Warnings in 1989
Flash Flood Warning 29, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Aug 1, 1989, 11:02 AM CDT for Brazoria County, Harris County, Texas. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Aug 1, 1989, 11:02 AM CDT (16:02 UTC)
- Expired
- Aug 1, 1989, 2:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
Counties Brazoria County, TX, Harris 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 12:00Z, 4.0 hours before the alert went out and 224 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
- 563 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 568 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 197 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 8:50 AM CDT | Tornado Warning | HGX | Galveston | 70 min |
| Aug 1, 10:42 AM CDT | Flash Flood Warning | HGX | Chambers, Galveston | 3 hr |
| Aug 1, 1:37 PM CDT | Flash Flood Warning | HGX | Fort Bend | 3 hr |
| Aug 1, 1:56 PM CDT | Flash Flood Warning | HGX | Galveston | 4 hr |
Nearby
Flash Flood Warnings in Texas, 1989Every flash flood 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; the sounding from the Mesonet's radiosonde archive.