Alert archive / Kansas / Mesoscale Discussions in 2020

Mesoscale Discussion 528

May 4, 20204 states

The Storm Prediction Center issued this mesoscale discussion at May 4, 2020, 9:00 AM CDT for 4 states. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
May 4, 2020, 9:00 AM CDT (14:00 UTC)
Expired
May 4, 2020, 10:30 AM CDT
In force
90 min
Issued by
the Storm Prediction Center
All 78 counties

Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Johnson County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Washington County, AR, Allen County, KS, Anderson County, KS, Atchison County, KS, Bourbon County, KS, Chase County, KS, Cherokee County, KS, Clay County, KS, Cloud County, KS, Coffey County, KS, Crawford County, KS, Dickinson County, KS, Douglas County, KS, Franklin County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Labette County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Marion County, KS, Miami County, KS, Montgomery County, KS, Morris County, KS, Neosho County, KS, Osage County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Saline County, KS, Shawnee County, KS, Wabaunsee County, KS, Washington County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Barry County, MO, Barton County, MO, Bates County, MO, Cass County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Ozark County, MO, Platte County, MO, Polk County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Vernon County, MO, Webster County, MO, Adair County, OK, Craig County, OK, Delaware County, OK, Ottawa County, OK, Sequoyah County, OK

The radar

The Tulsa radar (KINX), 160 km from the middle of the area, began a volume at 14:04 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

Topeka, KS (KTOP), launched 12:00Z, 2.0 hours before the alert went out and 156 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, Topeka, KS at 12:00Z on 2020-05-04Temperature 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, Topeka, KS at 12:00Z on 2020-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 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
2076 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
207 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
May 4, 10:38 AM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Cleburne, Fulton and 12 more97 min
May 4, 12:35 PM CDTSevere Thunderstorm WatchSPCBaxter, Boone, Cleburne, Fulton, Independence, Izard and 9 more5 hr
May 4, 1:04 PM CDTMesoscale DiscussionSPCBaxter, Boone, Cleburne, Fulton, Independence, Izard and 8 more86 min
May 4, 1:21 PM CDTMesoscale DiscussionSPCBenton114 min
May 4, 2:02 PM CDTMesoscale DiscussionSPCClay, Craighead, Greene, Mississippi, Poinsett118 min
May 4, 2:32 PM CDTTornado WatchSPCBenton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more9 hr
May 4, 2:58 PM CDTSevere Thunderstorm WatchSPCClay, Craighead, Crittenden, Greene, Mississippi, Poinsett6 hr
May 4, 3:44 PM CDTMesoscale DiscussionSPCClay, Greene, Mississippi, Randolph61 min
May 4, 6:21 PM CDTMesoscale DiscussionSPCMississippi54 min
May 4, 6:42 PM CDTMesoscale DiscussionSPCBenton, Boone, Carroll, Crawford, Franklin, Johnson and 6 more2 hr
May 4, 1:39 AM CDTMesoscale DiscussionSPCCheyenne, Decatur, Graham, Norton, Phillips, Rawlins and 5 more3 hr
May 4, 5:50 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Cherokee and 38 more55 min
May 4, 6:33 AM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Atchison, Barton, Bourbon, Brown and 49 more12 hr
May 4, 3:46 PM CDTMesoscale DiscussionSPCCarter, Cleveland, Garvin, Jefferson, Johnston, Lincoln and 11 more119 min
May 4, 4:38 PM CDTSevere Thunderstorm WatchSPCAtoka, Bryan, Carter, Cleveland, Garvin, Jefferson and 7 more5 hr

Nearby

Mesoscale Discussions in Kansas, 2020Mesoscale Discussions in Missouri, 2020Mesoscale Discussions in Arkansas, 2020Every mesoscale discussion in 2020

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.