Alert archive / Texas / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 478
The Storm Prediction Center issued this severe thunderstorm watch at Sep 16, 2016, 4:34 PM CDT for 20 counties in Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 16, 2016, 4:34 PM CDT (21:34 UTC)
- Expired
- Sep 16, 2016, 10:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
Counties Andrews County, TX, Borden County, TX, Callahan County, TX, Coke County, TX, Dawson County, TX, Ector County, TX, Fisher County, TX, Glasscock County, TX, Howard County, TX, Jones County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Nolan County, TX, Runnels County, TX, Scurry County, TX, Shackelford County, TX, Sterling County, TX, Taylor County, TX, Winkler County, TX
The radar
The Midland/Odessa radar (KMAF), 42 km from the middle of the area, began a volume at 21:33 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
- 20%
- 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
- 30%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 16, 4:43 PM CDT | Severe Thunderstorm Warning | MAF | Mitchell, Scurry | 62 min |
| Sep 16, 4:55 PM CDT | Severe Thunderstorm Warning | SJT | Fisher, Jones | 50 min |
| Sep 16, 5:22 PM CDT | Severe Thunderstorm Warning | SJT | Fisher | 38 min |
| Sep 16, 5:43 PM CDT | Severe Thunderstorm Warning | SJT | Fisher, Jones, Taylor | 47 min |
| Sep 16, 6:01 PM CDT | Severe Thunderstorm Warning | SJT | Fisher, Nolan | 44 min |
| Sep 16, 6:26 PM CDT | Severe Thunderstorm Warning | MAF | Mitchell | 49 min |
| Sep 16, 6:29 PM CDT | Severe Thunderstorm Warning | SJT | Callahan, Jones, Shackelford, Taylor | 46 min |
| Sep 16, 6:33 PM CDT | Severe Thunderstorm Warning | SJT | Coke, Nolan, Sterling | 42 min |
| Sep 16, 6:46 PM CDT | Severe Thunderstorm Warning | MAF | Ector | 29 min |
| Sep 16, 7:02 PM CDT | Severe Thunderstorm Warning | SJT | Coke, Nolan, Sterling, Tom Green | 43 min |
| Sep 16, 8:37 PM CDT | Severe Thunderstorm Warning | MAF | Andrews, Dawson, Gaines, Martin | 38 min |
| Sep 16, 9:13 PM CDT | Severe Thunderstorm Warning | MAF | Dawson | 47 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
Midland Regional, TX (KMAF), launched 12:00Z, 9.6 hours before the alert went out and 42 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
- 995 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 656 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 262 m²/s²
- 0-3 km storm-relative helicity
- 313 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 16, 2:29 PM CDT | Mesoscale Discussion | SPC | Andrews, Borden, Dawson, Dickens, Fisher, Gaines and 11 more | 2 hr |
| Sep 16, 2:40 PM CDT | Mesoscale Discussion | SPC | Jeff Davis, Pecos, Reeves, Ward | 65 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.