Alert archive / Oklahoma / Mesoscale Discussions in 2026

Mesoscale Discussion 894

May 29, 2026Barber County, Comanche County, Harper County, Kansas; 19 counties in Oklahoma; Hemphill County, Lipscomb County, Texas

The Storm Prediction Center issued this mesoscale discussion at May 29, 2026, 3:16 PM CDT for Barber County, Comanche County, Harper County, Kansas; 19 counties in Oklahoma; Hemphill County, Lipscomb County, Texas. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: May 29, 2026, 3:16 PM CDT (20:16 UTC)
Expired: May 29, 2026, 4:45 PM CDT
In force: 89 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch possible
Chance of a watch: 60%

All 24 counties

Barber County, KS, Comanche County, KS, Harper County, KS, Alfalfa County, OK, Beaver County, OK, Blaine County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Harper County, OK, Kay County, OK, Kingfisher County, OK, Logan County, OK, Major County, OK, Noble County, OK, Payne County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Hemphill County, TX, Lipscomb County, TX

The radar

The Vance AFB radar (KVNX), 73 km from the middle of the area, began a volume at 20:16 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.

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 250May 29, 3:45 PM CDT

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 8.3 hours before the alert went out and 140 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 823 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 1007 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 29, 3:19 PM CDT	Mesoscale Discussion	SPC	Greeley, Sherman, Wallace	116 min
May 29, 5:57 PM CDT	Mesoscale Discussion	SPC	Barber, Chautauqua, Cowley, Elk, Harper, Kingman and 1 more	93 min
May 29, 6:05 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Greeley, Logan, Rawlins, Sherman, Thomas and 1 more	115 min
May 29, 3:42 PM CDT	Severe Thunderstorm Watch	SPC	Alfalfa, Blaine, Custer, Dewey, Garfield, Grant and 10 more	6 hr
May 29, 5:23 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Blaine, Custer, Dewey, Garfield, Grant and 10 more	2 hr
May 29, 2:29 PM CDT	Mesoscale Discussion	SPC	Andrews, Borden, Briscoe, Childress, Collingsworth, Crane and 26 more	2 hr
May 29, 5:05 PM CDT	Severe Thunderstorm Watch	SPC	Armstrong, Borden, Briscoe, Carson, Castro, Childress and 42 more	5 hr

Nearby

Mesoscale Discussions in Oklahoma, 2026 Mesoscale Discussions in Kansas, 2026 Mesoscale Discussions in Texas, 2026 Every mesoscale discussion in 2026

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.