Alert archive / Texas / Severe Thunderstorm Watches in 2017

Severe Thunderstorm Watch 281

May 27, 20175 states

The Storm Prediction Center issued this severe thunderstorm watch at May 27, 2017, 4:27 PM MDT for 5 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 27, 2017, 4:27 PM MDT (22:27 UTC)
Expired
May 27, 2017, 10:19 PM MDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
60 kt
All 27 counties

Baca County, CO, Bent County, CO, Las Animas County, CO, Otero County, CO, Prowers County, CO, Grant County, KS, Hamilton County, KS, Haskell County, KS, Kearny County, KS, Morton County, KS, Seward County, KS, Stanton County, KS, Stevens County, KS, Union County, NM, Beaver County, OK, Cimarron County, OK, Texas County, OK, Dallam County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Roberts County, TX, Sherman County, TX

The radar

The Pueblo radar (KPUX), 193 km from the middle of the area, began a volume at 22:29 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
20%
One or more EF2 to EF5 tornadoes
5%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 27, 4:42 PM MDTSevere Thunderstorm WarningPUBLas Animas48 min
May 27, 4:43 PM MDTSevere Thunderstorm WarningPUBBent32 min
May 27, 4:51 PM MDTSevere Thunderstorm WarningPUBLas Animas39 min
May 27, 5:00 PM MDTSevere Thunderstorm WarningABQUnion45 min
May 27, 5:15 PM MDTSevere Thunderstorm WarningPUBBent, Prowers30 min
May 27, 5:23 PM MDTSevere Thunderstorm WarningPUBLas Animas52 min
May 27, 5:31 PM MDTSevere Thunderstorm WarningABQUnion29 min
May 27, 5:34 PM MDTSevere Thunderstorm WarningABQUnion26 min
May 27, 5:44 PM MDTSevere Thunderstorm WarningAMACimarron46 min
May 27, 6:09 PM MDTSevere Thunderstorm WarningAMACimarron66 min
May 27, 6:11 PM MDTSevere Thunderstorm WarningPUBBaca29 min
May 27, 6:16 PM MDTSevere Thunderstorm WarningABQUnion29 min
May 27, 6:21 PM MDTSevere Thunderstorm WarningDDCMorton54 min
May 27, 6:44 PM MDTSevere Thunderstorm WarningAMATexas46 min
May 27, 6:58 PM MDTSevere Thunderstorm WarningAMADallam, Sherman47 min
May 27, 7:08 PM MDTSevere Thunderstorm WarningDDCMorton, Stevens52 min
May 27, 7:17 PM MDTSevere Thunderstorm WarningAMATexas43 min
May 27, 7:31 PM MDTSevere Thunderstorm WarningAMAHansford, Hutchinson, Moore, Sherman59 min
May 27, 7:42 PM MDTSevere Thunderstorm WarningAMADallam, Hartley, Sherman48 min
May 27, 7:51 PM MDTSevere Thunderstorm WarningDDCMeade, Seward, Stevens54 min
May 27, 7:51 PM MDTSevere Thunderstorm WarningAMABeaver, Texas54 min
May 27, 8:16 PM MDTSevere Thunderstorm WarningAMAHansford, Hutchinson, Ochiltree, Roberts59 min
May 27, 8:21 PM MDTSevere Thunderstorm WarningAMADallam, Hansford, Hutchinson, Moore, Sherman54 min
May 27, 8:37 PM MDTSevere Thunderstorm WarningAMABeaver53 min
May 27, 9:42 PM MDTSevere Thunderstorm WarningAMAHemphill20 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, 10.5 hours before the alert went out and 236 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 2017-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2017-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -63 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
4238 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
-63 m²/s²
0-3 km storm-relative helicity
-21 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 26, 7:15 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Cheyenne, Crowley, Elbert, Kiowa and 8 more60 min
May 26, 9:03 PM MDTMesoscale DiscussionSPCCheyenne, Kit Carson, Phillips, Yuma117 min
May 27, 1:45 PM MDTMesoscale DiscussionSPCBaca, Bent, Crowley, Kiowa, Las Animas, Otero and 1 more2 hr
May 26, 6:38 PM MDTSevere Thunderstorm WatchSPCCheyenne, Decatur, Finney, Gove, Graham, Greeley and 12 more7 hr
May 26, 10:45 PM MDTMesoscale DiscussionSPCCheyenne, Decatur, Ellis, Gove, Graham, Logan and 12 more2 hr
May 26, 11:52 PM MDTSevere Thunderstorm WatchSPCBarton, Ellis, Ellsworth, Jewell, Lincoln, Mitchell and 8 more5 hr
May 27, 12:47 AM MDTMesoscale DiscussionSPCCheyenne, Decatur, Gove, Graham, Greeley, Lane and 10 more88 min
May 27, 2:35 AM MDTMesoscale DiscussionSPCBarton, Clay, Cloud, Dickinson, Ellis, Ellsworth and 21 more115 min
May 27, 8:59 AM MDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Chautauqua and 20 more2 hr
May 27, 11:13 AM MDTTornado WatchSPCBourbon, Cherokee, Crawford, Johnson, Linn, Miami7 hr
May 27, 12:12 PM MDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Linn, Miami, Neosho93 min
May 27, 1:46 PM MDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Coffey, Greenwood, Neosho and 1 more59 min
May 26, 9:36 PM MDTMesoscale DiscussionSPCAdair, Cherokee, Delaware, Haskell, Latimer, McIntosh and 5 more54 min
May 26, 11:06 PM MDTSevere Thunderstorm WatchSPCDelaware, Mayes5 hr
May 27, 1:04 PM MDTMesoscale DiscussionSPCBlaine, Cherokee, Craig, Creek, Delaware, Garfield and 22 more86 min
May 27, 3:01 PM MDTTornado WatchSPCAdair, Atoka, Bryan, Carter, Cherokee, Choctaw and 40 more10 hr
May 27, 3:51 PM MDTMesoscale DiscussionSPCCarter, Cleveland, Coal, Craig, Creek, Garvin and 25 more24 min
May 27, 5:00 PM MDTMesoscale DiscussionSPCArcher, Clay, Eastland, Jack, Montague, Palo Pinto and 4 more90 min

Nearby

Severe Thunderstorm Watches in Texas, 2017Severe Thunderstorm Watches in Kansas, 2017Severe Thunderstorm Watches in Colorado, 2017Every severe thunderstorm watch in 2017

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.