Alert archive / Texas / Tornado Warnings in 1999
Tornado Warning 21, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Jan 1, 1999, 11:25 PM CST for Chambers County, Texas. It was in force for 65 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 1, 1999, 11:25 PM CST (05:25 UTC)
- Expired
- Jan 2, 1999, 12:30 AM CST
- In force
- 65 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Chambers County, TX
The radar
The Houston radar (KHGX), 47 km from the middle of the area, began a volume at 05:25 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 1, 11:00 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 5.4 hours before the alert went out and 149 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
- 437 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 704 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 202 m²/s²
- 0-3 km storm-relative helicity
- 238 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.9
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 1, 7:05 PM CST | Tornado Warning | HGX | Burleson | 55 min |
| Jan 1, 7:41 PM CST | Severe Thunderstorm Warning | HGX | Houston | 59 min |
| Jan 1, 7:51 PM CST | Tornado Warning | HGX | Brazos | 59 min |
| Jan 1, 8:37 PM CST | Severe Thunderstorm Warning | HGX | Madison | 48 min |
| Jan 1, 8:48 PM CST | Tornado Warning | HGX | Harris | 42 min |
| Jan 1, 9:01 PM CST | Tornado Warning | HGX | Colorado | 44 min |
| Jan 1, 9:12 PM CST | Severe Thunderstorm Warning | HGX | Grimes, Washington | 63 min |
| Jan 1, 9:15 PM CST | Severe Thunderstorm Warning | HGX | Houston | 65 min |
| Jan 1, 9:35 PM CST | Tornado Warning | HGX | Montgomery | 65 min |
| Jan 1, 9:47 PM CST | Tornado Warning | HGX | Harris | 63 min |
| Jan 1, 9:50 PM CST | Tornado Warning | HGX | San Jacinto | 65 min |
| Jan 1, 9:55 PM CST | Tornado Warning | HGX | Liberty | 60 min |
| Jan 1, 10:10 PM CST | Severe Thunderstorm Warning | HGX | Walker | 65 min |
| Jan 1, 10:34 PM CST | Tornado Warning | HGX | Polk | 61 min |
| Jan 1, 10:41 PM CST | Tornado Warning | HGX | Montgomery | 64 min |
| Jan 1, 10:46 PM CST | Tornado Warning | HGX | Harris | 64 min |
| Jan 1, 10:47 PM CST | Tornado Warning | HGX | Liberty | 28 min |
| Jan 1, 10:47 PM CST | Tornado Warning | HGX | Liberty | 58 min |
| Jan 1, 11:25 PM CST | Tornado Warning | HGX | Chambers, Galveston | 90 min |
| Jan 1, 11:49 PM CST | Severe Thunderstorm Warning | HGX | Harris | 61 min |
| Jan 1, 11:50 PM CST | Severe Thunderstorm Warning | HGX | Chambers, Galveston | 65 min |
| Jan 1, 11:54 PM CST | Severe Thunderstorm Warning | HGX | Liberty | 61 min |
Nearby
Tornado Warnings in Texas, 1999Every tornado warning in 1999Tornadoes 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.