Alert archive / Texas / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 138, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Aug 25, 2015, 1:15 PM CDT for Liberty County, Texas. It was in force for 30 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
- Aug 25, 2015, 1:15 PM CDT (18:15 UTC)
- Expired
- Aug 25, 2015, 1:45 PM CDT
- In force
- 30 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
County Liberty County, TX
The radar
The Houston radar (KHGX), 80 km from the middle of the area, began a volume at 18:14 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 nearest sounding before it
Shreveport, LA (KBAD), launched 12:00Z, 6.3 hours before the alert went out and 278 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
- 416 J/kg
- Mixed-layer CIN
- -224 J/kg
- Mixed-layer LCL
- 1095 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 8:58 AM CDT | Special Weather Statement | HGX | Houston | 62 min |
| Aug 25, 10:56 AM CDT | Special Weather Statement | HGX | San Jacinto | 64 min |
| Aug 25, 12:00 PM CDT | Special Weather Statement | HGX | Grimes, Liberty, Montgomery, San Jacinto | 60 min |
| Aug 25, 12:11 PM CDT | Severe Thunderstorm Warning | HGX | Montgomery | 35 min |
| Aug 25, 12:15 PM CDT | Special Weather Statement | HGX | Brazos | 45 min |
| Aug 25, 12:27 PM CDT | Severe Thunderstorm Warning | HGX | Brazos, Burleson | 39 min |
| Aug 25, 12:42 PM CDT | Special Weather Statement | HGX | Harris, Liberty, Waller, Washington | 33 min |
| Aug 25, 12:48 PM CDT | Severe Thunderstorm Warning | HGX | Chambers, Harris, Liberty, Montgomery | 27 min |
| Aug 25, 12:55 PM CDT | Severe Thunderstorm Warning | HGX | Burleson | 35 min |
| Aug 25, 1:04 PM CDT | Special Marine Warning | HGX | 86 min | |
| Aug 25, 1:20 PM CDT | Special Weather Statement | HGX | Austin, Chambers, Fort Bend, Galveston, Harris, Waller and 1 more | 40 min |
| Aug 25, 1:27 PM CDT | Severe Thunderstorm Warning | HGX | Washington | 27 min |
| Aug 25, 1:44 PM CDT | Special Marine Warning | HGX | 61 min | |
| Aug 25, 1:47 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Galveston, Harris | 43 min |
| Aug 25, 1:59 PM CDT | Special Weather Statement | HGX | Washington | 46 min |
| Aug 25, 2:06 PM CDT | Special Weather Statement | HGX | Chambers | 39 min |
| Aug 25, 2:24 PM CDT | Special Weather Statement | HGX | Austin, Brazoria, Chambers, Colorado, Fort Bend, Wharton | 51 min |
| Aug 25, 2:37 PM CDT | Special Marine Warning | HGX | 83 min | |
| Aug 25, 3:19 PM CDT | Special Weather Statement | HGX | Brazoria, Jackson, Matagorda, Wharton | 86 min |
| Aug 25, 3:52 PM CDT | Special Marine Warning | HGX | 53 min | |
| Aug 25, 4:40 PM CDT | Special Marine Warning | HGX | 50 min | |
| Aug 25, 4:44 PM CDT | Special Marine Warning | HGX | 91 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2015Every severe thunderstorm warning in 2015
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.