Alert archive / Texas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 13, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jan 22, 1999, 4:08 AM CST for Houston County, Trinity County, Walker County, Texas. It was in force for 57 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 22, 1999, 4:08 AM CST (10:08 UTC)
- Expired
- Jan 22, 1999, 5:05 AM CST
- In force
- 57 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
Counties Houston County, TX, Trinity County, TX, Walker County, TX
The radar
The Houston radar (KHGX), 178 km from the middle of the area, began a volume at 10:14 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 22, 3:00 AM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 10.1 hours before the alert went out and 221 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
- 959 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1162 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 204 m²/s²
- 0-3 km storm-relative helicity
- 299 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 7.9
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 |
|---|---|---|---|---|
| Jan 22, 1:51 AM CST | Severe Thunderstorm Warning | HGX | Burleson | 34 min |
| Jan 22, 2:20 AM CST | Severe Thunderstorm Warning | HGX | Burleson | 45 min |
| Jan 22, 3:01 AM CST | Tornado Warning | HGX | Burleson | 34 min |
| Jan 22, 3:04 AM CST | Tornado Warning | HGX | Brazos | 51 min |
| Jan 22, 3:26 AM CST | Tornado Warning | HGX | Grimes | 59 min |
| Jan 22, 3:45 AM CST | Tornado Warning | HGX | Madison | 50 min |
| Jan 22, 4:32 AM CST | Tornado Warning | HGX | Brazos | 43 min |
| Jan 22, 4:43 AM CST | Tornado Warning | HGX | Grimes | 62 min |
| Jan 22, 5:08 AM CST | Tornado Warning | HGX | Walker | 37 min |
| Jan 22, 5:42 AM CST | Severe Thunderstorm Warning | HGX | Polk | 33 min |
| Jan 22, 7:51 AM CST | Severe Thunderstorm Warning | HGX | Liberty, San Jacinto | 44 min |
| Jan 22, 8:02 AM CST | Severe Thunderstorm Warning | HGX | Polk | 63 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1999Every severe thunderstorm warning in 1999
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.