Alert archive / Texas / Severe Thunderstorm Watches in 2018
Severe Thunderstorm Watch 410
The Storm Prediction Center issued this severe thunderstorm watch at Oct 12, 2018, 8:14 PM CDT for 19 counties in Texas. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 12, 2018, 8:14 PM CDT (01:14 UTC)
- Expired
- Oct 13, 2018, 4:00 AM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
Counties Andrews County, TX, Brewster County, TX, Crane County, TX, Culberson County, TX, Ector County, TX, Glasscock County, TX, Howard County, TX, Jeff Davis County, TX, Loving County, TX, Martin County, TX, Midland County, TX, Pecos County, TX, Presidio County, TX, Reagan County, TX, Reeves County, TX, Terrell County, TX, Upton County, TX, Ward County, TX, Winkler County, TX
The radar
The Midland/Odessa radar (KMAF), 133 km from the middle of the area, began a volume at 01:13 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
- 5%
- Ten or more severe wind reports
- 20%
- 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
- 50%
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 12, 8:55 PM CDT | Severe Thunderstorm Warning | MAF | Brewster, Pecos | 65 min |
| Oct 12, 9:05 PM CDT | Severe Thunderstorm Warning | MAF | Brewster, Pecos | 70 min |
| Oct 12, 9:20 PM CDT | Severe Thunderstorm Warning | MAF | Brewster, Pecos | 70 min |
| Oct 12, 9:51 PM CDT | Severe Thunderstorm Warning | MAF | Pecos | 54 min |
| Oct 12, 9:58 PM CDT | Severe Thunderstorm Warning | MAF | Brewster, Pecos, Terrell | 62 min |
| Oct 12, 10:27 PM CDT | Severe Thunderstorm Warning | MAF | Pecos | 63 min |
| Oct 12, 10:56 PM CDT | Severe Thunderstorm Warning | MAF | Pecos, Terrell | 64 min |
| Oct 12, 11:56 PM CDT | Severe Thunderstorm Warning | MAF | Terrell | 94 min |
| Oct 13, 12:03 AM CDT | Severe Thunderstorm Warning | MAF | Pecos | 57 min |
| Oct 13, 1:27 AM CDT | Flash Flood Warning | MAF | Howard | 5 hr |
| Oct 13, 1:30 AM CDT | Severe Thunderstorm Warning | MAF | Pecos | 60 min |
| Oct 13, 2:26 AM CDT | Severe Thunderstorm Warning | MAF | Crane, Pecos, Upton | 64 min |
| Oct 13, 2:58 AM CDT | Flash Flood Warning | MAF | Ector | 4 hr |
| Oct 13, 3:45 AM CDT | Flash Flood Warning | MAF | Andrews, Martin, Midland | 3 hr |
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 00:00Z, 1.2 hours before the alert went out and 132 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
- 481 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1136 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- -36 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -1.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 12, 7:22 PM CDT | Mesoscale Discussion | SPC | Crane, Crockett, Ector, Glasscock, Irion, Jeff Davis and 9 more | 2 hr |
| Oct 12, 10:58 PM CDT | Mesoscale Discussion | SPC | Crane, Ector, Glasscock, Loving, Midland, Pecos and 6 more | 2 hr |
| Oct 13, 1:40 AM CDT | Mesoscale Discussion | SPC | Concho, Crane, Crockett, Ector, Gillespie, Glasscock and 16 more | 65 min |
| Oct 13, 1:59 AM CDT | Severe Thunderstorm Watch | SPC | Concho, Crockett, Irion, Kimble, McCulloch, Mason and 5 more | 6 hr |
| Oct 13, 7:40 AM CDT | Tornado Watch | SPC | Brown, Coleman, Concho, McCulloch, Menard, Runnels and 3 more | 4 hr |
| Oct 13, 7:47 AM CDT | Mesoscale Discussion | SPC | Bell, Bosque, Brown, Burnet, Coleman, Comanche and 13 more | 118 min |
| Oct 13, 9:54 AM CDT | Tornado Watch | SPC | Anderson, Bell, Bosque, Burnet, Comanche, Coryell and 22 more | 9 hr |
| Oct 13, 11:04 AM CDT | Mesoscale Discussion | SPC | Anderson, Bell, Bosque, Brown, Burnet, Comanche and 27 more | 116 min |
| Oct 13, 1:56 PM CDT | Mesoscale Discussion | SPC | Anderson, Bell, Brazos, Burleson, Burnet, Cherokee and 23 more | 2 hr |
| Oct 13, 3:06 PM CDT | Tornado Watch | SPC | Angelina, Cherokee, Gregg, Harrison, Houston, Madison and 7 more | 5 hr |
| Oct 13, 5:34 PM CDT | Mesoscale Discussion | SPC | Anderson, Bell, Falls, Freestone, Leon, Milam and 1 more | 56 min |
| Oct 13, 6:41 PM CDT | Mesoscale Discussion | SPC | Angelina, Harrison, Houston, Madison, Nacogdoches, Panola and 4 more | 94 min |
Nearby
Severe Thunderstorm Watches in Texas, 2018Every severe thunderstorm watch in 2018
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.