Alert archive / Missouri / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 439, NWS Kansas City, MO

July 31, 20267 counties in Missouri; Atchison County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at Jul 31, 2026, 2:32 AM CDT for 7 counties in Missouri; Atchison County, Kansas. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 31, 2026, 2:32 AM CDT (07:32 UTC)
Expired: Jul 31, 2026, 3:15 AM CDT
In force: 43 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Damage threat: Considerable
Hail: 0.75 in
Wind: 70.0 mph

Counties Atchison County, KS, Buchanan County, MO, Caldwell County, MO, Clay County, MO, Clinton County, MO, DeKalb County, MO, Platte County, MO, Ray County, MO

The radar

The Pleasant Hill radar (KEAX), 85 km from the middle of the area, began a volume at 07:32 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 nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 7.5 hours before the alert went out and 115 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: 1164 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 878 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 303 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Kansas City, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 31, 12:06 AM CDT, 2 hours 26 minutes earlier.

Area forecast discussion, Jul 31, 12:06 AM CDT, 2 hours 26 minutes before

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Hazardous weather outlook, Jul 30, 5:05 AM CDT, 21 hours 27 minutes before

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In the hours before

Local storm report, Jul 31, 2:30 AM CDT, 2 minutes before

Preliminary Local Storm Report
National Weather Service Kansas City/Pleasant HIll MO
230 AM CDT Fri Jul 31 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0224 AM     Tstm Wnd Gst     1 ESE Saint Joseph Airp 39.76N 94.91W
07/31/2026  M66 MPH          Buchanan           MO   ASOS

&&

AK

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 31, 1:50 AM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Holt	29 min
Jul 31, 2:15 AM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Platte	45 min
Jul 31, 5:26 AM CDT	Areal Flood Advisory	EAX	Cass, Jackson	3 hr
Jul 31, 7:23 AM CDT	River Flood Warning	EAX	Jackson	3 hr
Jul 31, 8:11 AM CDT	Areal Flood Warning	EAX	Clay, Platte	109 min
Jul 31, 4:32 AM CDT	Areal Flood Advisory	EAX	Johnson, Leavenworth, Wyandotte	3 hr
Jul 31, 5:10 AM CDT	Flash Flood Warning	EAX	Johnson, Leavenworth, Wyandotte	3 hr
Jul 31, 5:13 AM CDT	Special Weather Statement	EAX	Miami	32 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2026 Severe Thunderstorm Warnings in Kansas, 2026 Every severe thunderstorm warning 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.