Alert archive / Texas / Severe Thunderstorm Watches in 2018

Severe Thunderstorm Watch 342

August 18, 201811 counties in Kansas; Beaver County, Cimarron County, Texas County, Oklahoma; 13 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Aug 18, 2018, 6:55 PM CDT for 11 counties in Kansas; Beaver County, Cimarron County, Texas County, Oklahoma; 13 counties in Texas. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Aug 18, 2018, 6:55 PM CDT (23:55 UTC)
Expired
Aug 18, 2018, 10:05 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 27 counties

Finney County, KS, Grant County, KS, Gray County, KS, Hamilton County, KS, Haskell County, KS, Kearny County, KS, Meade County, KS, Morton County, KS, Seward County, KS, Stanton County, KS, Stevens County, KS, Beaver County, OK, Cimarron County, OK, Texas County, OK, Armstrong County, TX, Carson County, TX, Dallam County, TX, Deaf Smith County, TX, Hansford County, TX, Hartley County, TX, Hutchinson County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Potter County, TX, Randall County, TX, Sherman County, TX

The radar

The Dodge City radar (KDDC), 170 km from the middle of the area, began a volume at 23:54 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
20%
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
60%

Warnings issued inside it

8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Aug 18, 6:58 PM CDTSevere Thunderstorm WarningDDCHamilton, Kearny47 min
Aug 18, 7:08 PM CDTSevere Thunderstorm WarningDDCGrant, Kearny37 min
Aug 18, 7:26 PM CDTFlash Flood WarningDDCKearny3 hr
Aug 18, 7:34 PM CDTFlash Flood WarningDDCGrant, Kearny3 hr
Aug 18, 7:38 PM CDTSevere Thunderstorm WarningDDCGrant, Kearny52 min
Aug 18, 7:54 PM CDTTornado WarningDDCGrant21 min
Aug 18, 8:28 PM CDTSevere Thunderstorm WarningDDCFinney, Grant, Haskell, Kearny32 min
Aug 18, 9:40 PM CDTFlash Flood WarningDDCGrant, Kearny4 hr

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 18, 1:25 PM CDTMesoscale DiscussionSPCBaca, Bent, Cheyenne, Crowley, El Paso, Kiowa and 5 more2 hr
Aug 18, 1:47 PM CDTSevere Thunderstorm WatchSPCBaca, Bent, Cheyenne, Crowley, Elbert, El Paso and 8 more7 hr
Aug 18, 3:26 PM CDTMesoscale DiscussionSPCPhillips, Sedgwick3 hr
Aug 18, 3:50 PM CDTMesoscale DiscussionSPCBaca, Bent, Cheyenne, Crowley, Elbert, El Paso and 7 more55 min
Aug 18, 6:34 PM CDTMesoscale DiscussionSPCBaca, Prowers116 min

Nearby

Severe Thunderstorm Watches in Texas, 2018Severe Thunderstorm Watches in Kansas, 2018Severe Thunderstorm Watches in Oklahoma, 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; radar from the NEXRAD Level II archive.