Alert archive / Texas / Tornado Warnings in 1999
Tornado Warning 32, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Mar 13, 1999, 1:59 AM CST for Harris County, Texas. It was in force for 31 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
- Mar 13, 1999, 1:59 AM CST (07:59 UTC)
- Expired
- Mar 13, 1999, 2:30 AM CST
- In force
- 31 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Harris County, TX
The radar
The Houston radar (KHGX), 52 km from the middle of the area, began a volume at 07:59 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 13, 2:30 AM CST | Thunderstorm Wind | Houston, TX | Roof damage along Rankin Rd.; reports of 50-60 mph winds throughout northern part of city |
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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 12, 8:00 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 8.0 hours before the alert went out and 213 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
- 892 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 549 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 327 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 9.8
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 |
|---|---|---|---|---|
| Mar 12, 9:05 PM CST | Severe Thunderstorm Warning | HGX | Burleson | 40 min |
| Mar 12, 9:20 PM CST | Tornado Warning | HGX | Polk | 40 min |
| Mar 12, 9:45 PM CST | Severe Thunderstorm Warning | HGX | Burleson | 30 min |
| Mar 12, 9:55 PM CST | Severe Thunderstorm Warning | HGX | Brazos, Burleson, Washington | 50 min |
| Mar 12, 10:40 PM CST | Severe Thunderstorm Warning | HGX | Brazos, Grimes, Washington | 50 min |
| Mar 12, 10:40 PM CST | Severe Thunderstorm Warning | HGX | Madison | 50 min |
| Mar 12, 11:15 PM CST | Severe Thunderstorm Warning | HGX | Houston, Madison, Walker | 45 min |
| Mar 12, 11:45 PM CST | Severe Thunderstorm Warning | HGX | San Jacinto, Trinity | 45 min |
| Mar 13, 12:10 AM CST | Severe Thunderstorm Warning | HGX | Polk, Trinity | 35 min |
| Mar 13, 12:24 AM CST | Severe Thunderstorm Warning | HGX | San Jacinto, Walker | 36 min |
| Mar 13, 1:34 AM CST | Tornado Warning | HGX | Montgomery | 26 min |
| Mar 13, 1:45 AM CST | Severe Thunderstorm Warning | HGX | Harris | 45 min |
| Mar 13, 2:03 AM CST | Severe Thunderstorm Warning | HGX | Liberty | 42 min |
| Mar 13, 2:05 AM CST | Tornado Warning | HGX | Polk | 50 min |
| Mar 13, 2:14 AM CST | Severe Thunderstorm Warning | HGX | Montgomery | 26 min |
| Mar 13, 2:30 AM CST | Severe Thunderstorm Warning | HGX | Harris | 45 min |
| Mar 13, 2:37 AM CST | Flash Flood Warning | HGX | Polk | 3 hr |
| Mar 13, 2:37 AM CST | Tornado Warning | HGX | Liberty | 23 min |
| Mar 13, 2:56 AM CST | Severe Thunderstorm Warning | HGX | Chambers, Liberty | 49 min |
| Mar 13, 3:08 AM CST | Tornado Warning | HGX | Liberty | 37 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.