Alert archive / Texas / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 130
The Storm Prediction Center issued this severe thunderstorm watch at Apr 30, 2016, 5:27 AM CDT for 17 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 30, 2016, 5:27 AM CDT (10:27 UTC)
- Expired
- Apr 30, 2016, 11:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
Counties Austin County, TX, Brazoria County, TX, Brazos County, TX, Burleson County, TX, Chambers County, TX, Colorado County, TX, Fort Bend County, TX, Galveston County, TX, Grimes County, TX, Harris County, TX, Liberty County, TX, Montgomery County, TX, Polk County, TX, San Jacinto County, TX, Waller County, TX, Washington County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 107 km from the middle of the area, began a volume at 10:29 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 5:51 AM CDT | Severe Thunderstorm Warning | HGX | Austin, Brazos, Burleson, Colorado, Fort Bend, Grimes and 5 more | 39 min |
| Apr 30, 5:56 AM CDT | Flash Flood Warning | HGX | Montgomery, Polk, San Jacinto | 79 min |
| Apr 30, 6:33 AM CDT | Severe Thunderstorm Warning | HGX | Austin, Brazos, Burleson, Colorado, Grimes, Madison and 2 more | 42 min |
| Apr 30, 7:13 AM CDT | Severe Thunderstorm Warning | HGX | Grimes, Harris, Houston, Liberty, Madison, Montgomery and 4 more | 47 min |
| Apr 30, 7:19 AM CDT | Flash Flood Warning | HGX | Montgomery, Polk, San Jacinto | 116 min |
| Apr 30, 8:00 AM CDT | Severe Thunderstorm Warning | HGX | Harris, Liberty, Montgomery, Polk, San Jacinto | 30 min |
| Apr 30, 8:31 AM CDT | Severe Thunderstorm Warning | HGX | Harris, Liberty, Montgomery, Polk, San Jacinto | 44 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 10.5 hours before the alert went out and 265 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
- 1365 J/kg
- Mixed-layer CIN
- -102 J/kg
- Mixed-layer LCL
- 717 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.7
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 8:07 PM CDT | Mesoscale Discussion | SPC | Bandera, Bastrop, Bell, Bexar, Blanco, Bosque and 29 more | 83 min |
| Apr 29, 8:20 PM CDT | Severe Thunderstorm Watch | SPC | Bandera, Bastrop, Bexar, Blanco, Burnet, Caldwell and 19 more | 9 hr |
| Apr 29, 8:56 PM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Bowie, Brazos, Burleson, Camp and 34 more | 94 min |
| Apr 29, 9:58 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Angelina, Bell, Bowie, Brazos, Burleson and 47 more | 7 hr |
| Apr 29, 11:42 PM CDT | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Gregg, Harrison, Marion and 4 more | 93 min |
| Apr 30, 1:46 AM CDT | Mesoscale Discussion | SPC | Bandera, Bexar, Blanco, Comal, Hays, Kendall and 3 more | 59 min |
| Apr 30, 3:23 AM CDT | Mesoscale Discussion | SPC | Hardin, Harris, Jasper, Jefferson, Liberty, Newton and 7 more | 97 min |
| Apr 30, 5:11 AM CDT | Severe Thunderstorm Watch | SPC | Hardin, Jasper, Jefferson, Newton, Orange, Sabine and 1 more | 9 hr |
| Apr 30, 5:12 AM CDT | Mesoscale Discussion | SPC | Austin, Burleson, Colorado, Fayette, Grimes, Harris and 7 more | 93 min |
| Apr 30, 7:38 AM CDT | Mesoscale Discussion | SPC | Chambers, Fort Bend, Hardin, Harris, Jefferson, Liberty and 1 more | 67 min |
Nearby
Severe Thunderstorm Watches in Texas, 2016Every severe thunderstorm watch in 2016
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.