Alert archive / Missouri / Mesoscale Discussions in 2026

Mesoscale Discussion 593

April 28, 202613 counties in Arkansas; 21 counties in Missouri; 9 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 28, 2026, 10:01 AM CDT for 13 counties in Arkansas; 21 counties in Missouri; 9 counties in Oklahoma. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued
Apr 28, 2026, 10:01 AM CDT (15:01 UTC)
Expired
Apr 28, 2026, 12:00 PM CDT
In force
119 min
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch likely
Chance of a watch
80%
All 43 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Fulton County, AR, Izard County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Searcy County, AR, Sharp County, AR, Washington County, AR, Barry County, MO, Christian County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Howell County, MO, Laclede County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Oregon County, MO, Ozark County, MO, Pulaski County, MO, Reynolds County, MO, Shannon County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Delaware County, OK, Haskell County, OK, Mayes County, OK, Muskogee County, OK, Ottawa County, OK, Sequoyah County, OK, Wagoner County, OK

The radar

The Springfield radar (KSGF), 93 km from the middle of the area, began a volume at 15:03 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.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 3.0 hours before the alert went out and 60 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, Springfield, MO at 12:00Z on 2026-04-28Temperature 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, Springfield, MO at 12:00Z on 2026-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.1939587897117Sfc1 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
1333 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
180 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

IssuedProductOfficeCountiesLasted
Apr 27, 7:23 PM CDTMesoscale DiscussionSPCBaxter, Boone, Cleburne, Conway, Faulkner, Fulton and 17 more2 hr
Apr 27, 8:10 PM CDTMesoscale DiscussionSPCClay, Fulton, Randolph2 hr
Apr 27, 8:23 PM CDTTornado WatchSPCBaxter, Boone, Cleburne, Conway, Faulkner, Fulton and 28 more6 hr
Apr 27, 9:48 PM CDTTornado WatchSPCClay, Craighead, Crittenden, Cross, Greene, Lee and 4 more7 hr
Apr 27, 10:09 PM CDTMesoscale DiscussionSPCClay, Cleburne, Craighead, Greene, Independence, Jackson and 8 more2 hr
Apr 27, 10:46 PM CDTMesoscale DiscussionSPCCleburne, Independence, Jackson, Stone59 min
Apr 28, 1:00 AM CDTMesoscale DiscussionSPCCrittenden, Cross, Jackson, Mississippi, Poinsett, Woodruff2 hr
Apr 28, 9:33 AM CDTMesoscale DiscussionSPCBradley, Calhoun, Clark, Cleveland, Columbia, Dallas and 20 more117 min
Apr 28, 10:15 AM CDTSevere Thunderstorm WatchSPCBaxter, Benton, Boone, Carroll, Cleburne, Fulton and 13 more9 hr
Apr 28, 10:45 AM CDTTornado WatchSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 40 more8 hr
Apr 28, 1:08 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Cleburne, Fulton and 11 more2 hr
Apr 28, 1:40 PM CDTMesoscale DiscussionSPCAshley, Chicot65 min
Apr 28, 1:54 PM CDTTornado WatchSPCAshley, Chicot8 hr
Apr 28, 2:18 PM CDTMesoscale DiscussionSPCCraighead, Crittenden, Cross, Lee, Mississippi, Phillips and 2 more57 min
Apr 28, 2:32 PM CDTTornado WatchSPCClay, Craighead, Crittenden, Cross, Greene, Lee and 4 more7 hr
Apr 28, 3:18 PM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 37 more117 min
Apr 28, 4:18 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Clay, Fulton and 8 more87 min
Apr 28, 5:26 PM CDTMesoscale DiscussionSPCClay94 min
Apr 28, 5:45 PM CDTTornado WatchSPCArkansas, Baxter, Boone, Bradley, Calhoun, Clark and 50 more7 hr
Apr 28, 5:52 PM CDTMesoscale DiscussionSPCBaxter, Boone, Clark, Conway, Franklin, Garland and 20 more113 min
Apr 27, 8:08 PM CDTMesoscale DiscussionSPCIron, Jefferson, Madison, Perry, Sainte Genevieve, Saint Francois and 2 more97 min
Apr 28, 1:32 PM CDTSevere Thunderstorm WatchSPCBollinger, Butler, Cape Girardeau, Carter, Cole, Crawford and 17 more6 hr
Apr 28, 4:49 AM CDTMesoscale DiscussionSPCCaddo, Carter, Cleveland, Comanche, Cotton, Garvin and 10 more3 hr
Apr 28, 5:31 AM CDTSevere Thunderstorm WatchSPCAtoka, Bryan, Carter, Cleveland, Coal, Comanche and 16 more6 hr
Apr 28, 7:46 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Coal, Cotton, Garvin and 8 more119 min
Apr 28, 12:07 PM CDTMesoscale DiscussionSPCJefferson, Love, Marshall113 min
Apr 28, 1:09 PM CDTTornado WatchSPCAtoka, Bryan, Carter, Coal, Garvin, Hughes and 8 more9 hr
Apr 28, 2:26 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Jefferson and 5 more94 min

Nearby

Mesoscale Discussions in Missouri, 2026Mesoscale Discussions in Arkansas, 2026Mesoscale Discussions in Oklahoma, 2026Every 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.