Alert archive / Texas / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 21, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Feb 14, 2017, 9:43 AM CST for Liberty County, Polk County, Texas. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Feb 14, 2017, 9:43 AM CST (15:43 UTC)
- Expired
- Feb 14, 2017, 10:30 AM CST
- In force
- 47 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Liberty County, TX, Polk County, TX
The radar
The Houston radar (KHGX), 135 km from the middle of the area, began a volume at 15:45 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 2, 1:39 AM CST | Severe Thunderstorm Watch | SPC | 59 days |
| Feb 14, 5:09 AM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 3.7 hours before the alert went out and 161 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
- 22 J/kg
- Mixed-layer CIN
- -294 J/kg
- Mixed-layer LCL
- 644 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 227 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
479
WUUS54 KHGX 141543
SVRHGX
TXC291-373-141630-
/O.NEW.KHGX.SV.W.0021.170214T1543Z-170214T1630Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Houston/Galveston TX
943 AM CST TUE FEB 14 2017
The National Weather Service in League City has issued a
* Severe Thunderstorm Warning for...
Northwestern Liberty County in southeastern Texas...
Eastern Polk County in southeastern Texas...
* Until 1030 AM CST.
* At 943 AM CST, severe thunderstorms were located along a line
extending from near Corrigan to near Alabama-Coushatta Reservation
to near Shepherd, moving northeast at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Cleveland, Corrigan, Seven Oaks, Alabama-Coushatta Reservation,
Rye, Moscow, Romayor and Segno.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
A tornado watch remains in effect until 100 PM CST for southeastern
Texas.
LAT...LON 3049 9454 3049 9473 3042 9470 3040 9470
3033 9504 3042 9499 3049 9485 3051 9487
3053 9483 3056 9492 3067 9486 3103 9486
3111 9472 3107 9459 3107 9460 3101 9466
TIME...MOT...LOC 1543Z 238DEG 38KT 3104 9484 3068 9479 3043 9494
HAIL...<.75IN
WIND...60MPH
$$The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 13, 9:35 PM CST | Marine Dense Fog Advisory | HGX | 6 hr | |
| Feb 14, 3:47 AM CST | Small Craft Advisory | HGX | 12 hr | |
| Feb 14, 5:55 AM CST | Special Weather Statement | HGX | Austin, Colorado | 50 min |
| Feb 14, 6:28 AM CST | Severe Thunderstorm Warning | HGX | Colorado, Jackson, Matagorda, Wharton | 62 min |
| Feb 14, 6:42 AM CST | Severe Thunderstorm Warning | HGX | Austin, Brazos, Burleson, Colorado, Grimes, Waller and 1 more | 48 min |
| Feb 14, 6:45 AM CST | Tornado Warning | HGX | Colorado, Jackson, Wharton | 45 min |
| Feb 14, 6:56 AM CST | Areal Flood Advisory | HGX | Colorado, Jackson, Wharton | 3 hr |
| Feb 14, 7:25 AM CST | Severe Thunderstorm Warning | HGX | Austin, Brazoria, Colorado, Fort Bend, Jackson, Matagorda and 1 more | 65 min |
| Feb 14, 7:28 AM CST | Special Weather Statement | HGX | Grimes, Montgomery, Waller | 62 min |
| Feb 14, 7:29 AM CST | Tornado Warning | HGX | Brazoria, Fort Bend, Matagorda, Wharton | 31 min |
| Feb 14, 7:31 AM CST | Areal Flood Advisory | HGX | Austin, Colorado, Fort Bend, Jackson, Wharton | 3 hr |
| Feb 14, 7:39 AM CST | Tornado Warning | HGX | Austin, Fort Bend, Wharton | 36 min |
| Feb 14, 7:55 AM CST | Tornado Warning | HGX | Brazoria, Fort Bend, Harris, Wharton | 50 min |
| Feb 14, 7:59 AM CST | Special Marine Warning | HGX | 2 hr | |
| Feb 14, 8:16 AM CST | Severe Thunderstorm Warning | HGX | Brazoria, Fort Bend, Harris, Montgomery, Walker | 44 min |
| Feb 14, 8:21 AM CST | Severe Thunderstorm Warning | HGX | Harris, Houston, Liberty, Madison, Montgomery, Polk and 3 more | 54 min |
| Feb 14, 8:30 AM CST | Areal Flood Advisory | HGX | Austin, Brazoria, Colorado, Fort Bend, Galveston, Harris and 3 more | 2 hr |
| Feb 14, 8:35 AM CST | Special Marine Warning | HGX | 115 min | |
| Feb 14, 8:37 AM CST | Tornado Warning | HGX | Brazoria, Fort Bend, Galveston, Harris | 38 min |
| Feb 14, 8:42 AM CST | Tornado Warning | HGX | Brazoria, Galveston, Matagorda | 33 min |
| Feb 14, 8:45 AM CST | Severe Thunderstorm Warning | HGX | Brazoria, Galveston, Matagorda | 30 min |
| Feb 14, 8:56 AM CST | Severe Thunderstorm Warning | HGX | Brazoria, Chambers, Galveston, Harris, Liberty, Montgomery and 1 more | 64 min |
| Feb 14, 8:58 AM CST | Severe Thunderstorm Warning | HGX | Houston, Liberty, Montgomery, Polk, San Jacinto, Trinity | 47 min |
| Feb 14, 9:09 AM CST | Tornado Warning | HGX | Chambers, Harris, Liberty | 30 min |
| Feb 14, 9:13 AM CST | Severe Thunderstorm Warning | HGX | Brazoria, Fort Bend, Harris | 32 min |
| Feb 14, 9:21 AM CST | Severe Thunderstorm Warning | HGX | Brazoria, Galveston, Matagorda | 39 min |
| Feb 14, 9:24 AM CST | Tornado Warning | HGX | Brazoria | 36 min |
| Feb 14, 9:35 AM CST | Areal Flood Advisory | HGX | Harris, Liberty | 115 min |
| Feb 14, 9:56 AM CST | Tornado Warning | HGX | Brazoria, Galveston | 34 min |
| Feb 14, 9:57 AM CST | Severe Thunderstorm Warning | HGX | Chambers, Galveston, Harris, Liberty, Polk | 63 min |
| Feb 14, 10:22 AM CST | Severe Thunderstorm Warning | HGX | Chambers, Galveston | 53 min |
| Feb 14, 10:28 AM CST | Special Marine Warning | HGX | 2 hr | |
| Feb 14, 3:51 PM CST | Small Craft Advisory | HGX | 20 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 2017Every severe thunderstorm warning in 2017
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.