Alert archive / Missouri / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 347, NWS Kansas City, MO

June 11, 2026Grundy County, Mercer County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 11, 2026, 6:12 AM CDT for Grundy County, Mercer County, Missouri. It was in force for 25 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: Jun 11, 2026, 6:12 AM CDT (11:12 UTC)
Expired: Jun 11, 2026, 6:37 AM CDT
In force: 25 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Grundy County, MO, Mercer County, MO

The radar

The Des Moines radar (KDMX), 163 km from the middle of the area, began a volume at 11:12 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 11, 2:13 AM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 11.2 hours before the alert went out and 227 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: 2804 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1422 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 180 m²/s²
0-3 km storm-relative helicity: 233 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 16.0

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 Jun 11, 3:49 AM CDT, 2 hours 23 minutes earlier.

Area forecast discussion, Jun 11, 3:49 AM CDT, 2 hours 23 minutes before

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Hazardous weather outlook, Jun 11, 5:05 AM CDT, 1 hour 7 minutes before

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
0505 AM CDT Thu Jun 11 2026

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-121005-
Atchison KS-Miami-Linn KS-Doniphan-Leavenworth-Wyandotte-Johnson KS-
Atchison MO-Nodaway-Worth-Gentry-Harrison-Mercer-Putnam-Schuyler-
Holt-Andrew-De Kalb-Daviess-Grundy-Sullivan-Adair-Buchanan-Clinton-
Caldwell-Livingston-Linn MO-Macon-Platte-Clay-Ray-Carroll-Chariton-
Randolph-Jackson-Lafayette-Saline-Howard-Cass-Johnson MO-Pettis-
Cooper-Bates-Henry-
0505 AM CDT Thu Jun 11 2026

This hazardous weather outlook is for northwest...north central and
west central Missouri...as well as extreme eastern Kansas.

.DAY ONE...Through tonight.

Please go to https://weather.gov/media/eax/DssPacket.pdf for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Please go to https://weather.gov/media/eax/DssPacket.pdf for more information on
potential weather hazards.

.KEY MESSAGES...

* Enhanced Risk (level 3 of 5) for severe weather today as a
  cold front slides through the area. All severe hazards remain
  possible.

* Additional severe weather looks possible for Saturday.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 7:04 PM CDT	Severe Thunderstorm Warning	EAX	Grundy, Harrison, Mercer	41 min
Jun 10, 7:07 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Putnam, Sullivan	53 min
Jun 10, 7:10 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Holt	65 min
Jun 10, 7:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	EAX	Grundy, Mercer, Putnam, Sullivan	46 min
Jun 10, 7:44 PM CDT	Areal Flood Advisory	EAX	Gentry, Grundy, Harrison, Mercer, Nodaway, Putnam and 1 more	6 hr
Jun 10, 8:01 PM CDT	Severe Thunderstorm Warning	EAX	Daviess, Grundy, Harrison, Linn, Sullivan	44 min
Jun 10, 8:10 PM CDT	Flash Flood Warning	EAX	Adair, Grundy, Mercer, Putnam, Schuyler, Sullivan	6 hr
Jun 10, 8:51 PM CDT	Flash Flood Warning	EAX	Adair, Schuyler	5 hr
Jun 10, 9:47 PM CDT	Flash Flood Warning	EAX	Gentry, Harrison, Nodaway, Worth	3 hr
Jun 10, 11:00 PM CDT	Flash Flood Warning	EAX	Adair, Grundy, Linn, Livingston, Macon, Sullivan	3 hr
Jun 10, 11:57 PM CDT	River Flood Warning	EAX	Grundy, Livingston	11 hr
Jun 10, 11:58 PM CDT	River Flood Warning	EAX	Adair, Macon, Putnam, Schuyler	14 hr
Jun 11, 1:49 AM CDT	Areal Flood Warning	EAX	Adair, Daviess, DeKalb, Gentry, Grundy, Harrison and 7 more	9 hr
Jun 11, 4:48 AM CDT	Severe Thunderstorm Warning	EAX	Atchison	15 min
Jun 11, 6:32 AM CDT	Severe Thunderstorm Warning	EAX	Nodaway, Worth	43 min
Jun 11, 6:57 AM CDT	Severe Thunderstorm Warning	EAX	Putnam, Schuyler, Sullivan	48 min
Jun 11, 7:06 AM CDT	Severe Thunderstorm Warning Considerable damage threat	EAX	Gentry, Harrison, Mercer, Worth	54 min
Jun 11, 7:55 AM CDT	Severe Thunderstorm Warning	EAX	Gentry, Grundy, Harrison, Mercer, Putnam, Worth	50 min
Jun 11, 8:02 AM CDT	Flash Flood Warning	EAX	Gentry, Grundy, Harrison, Mercer, Worth	3 hr
Jun 11, 8:28 AM CDT	Severe Thunderstorm Warning	EAX	Daviess, Grundy, Harrison, Mercer, Putnam, Schuyler and 1 more	47 min
Jun 11, 8:45 AM CDT	Flash Flood Warning	EAX	Grundy, Mercer, Putnam, Sullivan	3 hr
Jun 11, 8:58 AM CDT	River Flood Warning	EAX	Atchison, Holt	25 hr
Jun 11, 9:06 AM CDT	Severe Thunderstorm Warning Considerable damage threat	EAX	Adair, Grundy, Linn, Macon, Mercer, Putnam and 2 more	54 min
Jun 11, 9:36 AM CDT	Tornado Warning	EAX	Putnam, Schuyler	22 min
Jun 11, 9:56 AM CDT	Severe Thunderstorm Warning Considerable damage threat	EAX	Adair, Linn, Macon, Putnam, Schuyler, Sullivan	64 min
Jun 11, 10:40 AM CDT	Areal Flood Warning	EAX	Adair, Chariton, Daviess, DeKalb, Gentry, Grundy and 10 more	36 hr
Jun 11, 1:42 PM CDT	River Flood Warning	EAX	Andrew, Buchanan	50 hr
Jun 11, 1:52 PM CDT	Severe Thunderstorm Warning	EAX	Grundy, Mercer, Putnam, Schuyler, Sullivan	53 min
Jun 11, 2:23 PM CDT	River Flood Warning	EAX	Andrew, Nodaway	39 hr
Jun 11, 2:42 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Putnam, Schuyler, Sullivan	63 min
Jun 11, 3:03 PM CDT	River Flood Warning	EAX	Grundy, Livingston	30 hr
Jun 11, 3:04 PM CDT	Severe Thunderstorm Warning	EAX	Linn, Macon	56 min
Jun 11, 3:08 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Saline	52 min
Jun 11, 3:21 PM CDT	Tornado Warning	EAX	Adair, Schuyler	25 min
Jun 11, 3:43 PM CDT	Flash Flood Warning	EAX	Adair, Putnam, Schuyler	3 hr
Jun 11, 3:43 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Macon	47 min
Jun 11, 3:50 PM CDT	Severe Thunderstorm Warning	EAX	Macon	40 min
Jun 11, 3:51 PM CDT	Tornado Warning	EAX	Macon	27 min
Jun 11, 3:56 PM CDT	Special Weather Statement	EAX	Carroll	34 min
Jun 11, 4:16 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Chariton, Howard, Saline	44 min
Jun 11, 4:26 PM CDT	Severe Thunderstorm Warning Considerable damage threat	EAX	Macon	49 min
Jun 11, 4:36 PM CDT	Flash Flood Warning	EAX	Macon	3 hr
Jun 11, 4:38 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass, Henry	67 min
Jun 11, 4:49 PM CDT	Severe Thunderstorm Warning	EAX	Johnson	41 min
Jun 11, 4:49 PM CDT	Severe Thunderstorm Warning	EAX	Chariton, Howard, Randolph, Saline	56 min
Jun 11, 5:03 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Howard, Pettis, Saline	57 min
Jun 11, 5:41 PM CDT	Severe Thunderstorm Warning	EAX	Henry	49 min
Jun 11, 5:44 PM CDT	Severe Thunderstorm Warning	EAX	Howard	31 min
Jun 11, 5:55 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Howard, Pettis	50 min

Nearby

Severe Thunderstorm Warnings in Missouri, 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.