Alert archive / Texas / Severe Thunderstorm Watches in 2018

Severe Thunderstorm Watch 87

May 13, 201815 counties in Kansas; 14 counties in Oklahoma; 20 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 13, 2018, 3:59 PM CDT for 15 counties in Kansas; 14 counties in Oklahoma; 20 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 13, 2018, 3:59 PM CDT (20:59 UTC)
Expired
May 13, 2018, 11:00 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
3 in
Strongest gust expected
75 kt
All 49 counties

Barber County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Ellis County, KS, Ford County, KS, Hodgeman County, KS, Kiowa County, KS, Meade County, KS, Ness County, KS, Pawnee County, KS, Pratt County, KS, Rush County, KS, Stafford County, KS, Trego County, KS, Beaver County, OK, Beckham County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Kiowa County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Briscoe County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Foard County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Hemphill County, TX, King County, TX, Knox County, TX, Lipscomb County, TX, Motley County, TX, Ochiltree County, TX, Roberts County, TX, Wheeler County, TX

The radar

The Altus AFB radar (KFDR), 125 km from the middle of the area, began a volume at 20:59 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
5%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
40%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
40%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 13, 4:36 PM CDTSevere Thunderstorm WarningOUNHarper, Woods29 min
May 13, 4:37 PM CDTSevere Thunderstorm WarningAMALipscomb, Ochiltree, Roberts83 min
May 13, 4:38 PM CDTSevere Thunderstorm WarningDDCClark, Comanche52 min
May 13, 4:40 PM CDTSevere Thunderstorm WarningAMABeaver73 min
May 13, 4:45 PM CDTSevere Thunderstorm WarningAMABeaver59 min
May 13, 5:14 PM CDTSevere Thunderstorm WarningAMAHemphill, Lipscomb, Ochiltree, Roberts61 min
May 13, 5:17 PM CDTSevere Thunderstorm WarningDDCComanche, Kiowa26 min
May 13, 5:20 PM CDTSevere Thunderstorm WarningAMACollingsworth, Wheeler55 min
May 13, 5:22 PM CDTSevere Thunderstorm WarningDDCBarber, Comanche, Edwards, Kiowa, Pratt38 min
May 13, 5:25 PM CDTSevere Thunderstorm WarningAMACollingsworth, Donley, Gray65 min
May 13, 5:28 PM CDTSevere Thunderstorm WarningAMABeaver40 min
May 13, 5:30 PM CDTSevere Thunderstorm WarningLUBChildress, Cottle, Hall, Motley60 min
May 13, 5:33 PM CDTSevere Thunderstorm WarningLUBChildress, Hall57 min
May 13, 5:45 PM CDTSevere Thunderstorm WarningDDCClark, Meade45 min
May 13, 5:50 PM CDTSevere Thunderstorm WarningDDCEdwards, Kiowa, Pratt, Stafford40 min
May 13, 5:53 PM CDTSevere Thunderstorm WarningAMABeaver66 min
May 13, 5:56 PM CDTSevere Thunderstorm WarningAMABeaver79 min
May 13, 6:06 PM CDTSevere Thunderstorm WarningAMAHemphill36 min
May 13, 6:18 PM CDTSevere Thunderstorm WarningDDCEdwards, Kiowa, Pawnee, Pratt, Stafford42 min
May 13, 6:21 PM CDTSevere Thunderstorm WarningDDCClark14 min
May 13, 6:28 PM CDTSevere Thunderstorm WarningAMADonley, Gray, Wheeler62 min
May 13, 6:28 PM CDTSevere Thunderstorm WarningLUBHall62 min
May 13, 6:32 PM CDTSevere Thunderstorm WarningLUBChildress, Hall58 min
May 13, 6:41 PM CDTSevere Thunderstorm WarningDDCClark, Meade49 min
May 13, 6:53 PM CDTSevere Thunderstorm WarningAMACollingsworth, Donley, Wheeler67 min
May 13, 7:00 PM CDTSevere Thunderstorm WarningDDCEdwards, Pawnee24 min
May 13, 7:08 PM CDTSevere Thunderstorm WarningAMABeaver97 min
May 13, 7:09 PM CDTSevere Thunderstorm WarningDDCClark, Ford14 min
May 13, 7:14 PM CDTSevere Thunderstorm WarningDDCClark, Meade46 min
May 13, 7:21 PM CDTSevere Thunderstorm WarningDDCEllis, Ness, Pawnee, Rush, Trego54 min
May 13, 7:24 PM CDTSevere Thunderstorm WarningOUNHarper36 min
May 13, 7:25 PM CDTSevere Thunderstorm WarningLUBChildress, Hall65 min
May 13, 7:33 PM CDTSevere Thunderstorm WarningDDCClark, Ford, Gray, Meade26 min
May 13, 7:35 PM CDTSevere Thunderstorm WarningDDCNess, Trego38 min
May 13, 7:50 PM CDTSevere Thunderstorm WarningAMAHemphill, Wheeler55 min
May 13, 8:04 PM CDTSevere Thunderstorm WarningLUBChildress, Hall26 min
May 13, 8:05 PM CDTSevere Thunderstorm WarningDDCClark, Comanche55 min
May 13, 8:09 PM CDTSevere Thunderstorm WarningDDCEllis, Ness, Rush, Trego51 min
May 13, 8:10 PM CDTSevere Thunderstorm WarningLUBChildress, Cottle, Hall, Motley65 min
May 13, 8:17 PM CDTSevere Thunderstorm WarningOUNRoger Mills58 min
May 13, 8:23 PM CDTSevere Thunderstorm WarningDDCEllis52 min
May 13, 8:26 PM CDTSevere Thunderstorm WarningDDCComanche, Kiowa49 min
May 13, 8:26 PM CDTSevere Thunderstorm WarningLUBChildress, Hall64 min
May 13, 8:33 PM CDTSevere Thunderstorm WarningDDCEdwards, Ford, Hodgeman, Pawnee44 min
May 13, 8:56 PM CDTSevere Thunderstorm WarningDDCEdwards, Pawnee, Rush39 min
May 13, 8:57 PM CDTSevere Thunderstorm WarningOUNWoods44 min
May 13, 8:59 PM CDTSevere Thunderstorm WarningDDCEllis, Ness, Rush, Trego46 min
May 13, 8:59 PM CDTFlash Flood WarningLUBChildress, Cottle, Hall, Motley2 hr
May 13, 9:02 PM CDTSevere Thunderstorm WarningDDCBarber, Comanche, Kiowa, Pratt43 min
May 13, 9:05 PM CDTFlash Flood WarningDDCNess, Rush6 hr
May 13, 9:09 PM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills51 min
May 13, 9:12 PM CDTSevere Thunderstorm WarningLUBChildress, Cottle, Hall63 min
May 13, 9:42 PM CDTSevere Thunderstorm WarningDDCEllis, Ness, Rush, Trego48 min
May 13, 10:10 PM CDTSevere Thunderstorm WarningLUBChildress41 min
May 13, 10:29 PM CDTSevere Thunderstorm WarningDDCEllis, Ness, Rush, Trego46 min
May 13, 10:33 PM CDTSevere Thunderstorm WarningOUNHardeman42 min
May 13, 10:38 PM CDTSevere Thunderstorm WarningOUNBeckham37 min
May 13, 10:55 PM CDTSevere Thunderstorm WarningOUNHarmon, Jackson50 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

Amarillo Airport, TX (KAMA), launched 12:00Z, 9.0 hours before the alert went out and 150 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.

Skew-T log-pSkew-T log-p diagram, Amarillo Airport, TX at 12:00Z on 2018-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 61 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 12:00Z on 2018-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
61 J/kg
Mixed-layer CIN
-288 J/kg
Mixed-layer LCL
2990 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 13, 3:41 PM CDTMesoscale DiscussionSPCBarber, Clark, Comanche, Kingman, Kiowa, Pratt2 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.