Alert archive / Missouri / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 271, NWS Kansas City, MO

September 23, 2023Cass County, Henry County, Johnson County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Sep 23, 2023, 12:38 PM CDT for Cass County, Henry County, Johnson County, Missouri. It was in force for 37 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: Sep 23, 2023, 12:38 PM CDT (17:38 UTC)
Expired: Sep 23, 2023, 1:15 PM CDT
In force: 37 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cass County, MO, Henry County, MO, Johnson County, MO

The radar

The Pleasant Hill radar (KEAX), 34 km from the middle of the area, began a volume at 17:38 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 12:00Z, 5.6 hours before the alert went out and 150 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: 521 J/kg
Mixed-layer CIN: -349 J/kg
Mixed-layer LCL: 792 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 366 m²/s²
0-3 km storm-relative helicity: 368 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 Sep 23, 12:38 PM CDT, 0 minutes earlier.

Area forecast discussion, Sep 23, 12:38 PM CDT, 0 minutes before

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Hazardous weather outlook, Sep 23, 5:13 AM CDT, 7 hours 25 minutes before

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
513 AM CDT Sat Sep 23 2023

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-241015-
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-
513 AM CDT Sat Sep 23 2023

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

.DAY ONE...Today and Tonight

 Strong to severe weather expected this evening into the night.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Additional rounds of showers expected for Sunday. Severe not expected
at this time.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

In the hours before

Special weather statement, Sep 23, 9:46 AM CDT, 2 hours 52 minutes before

Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
946 AM CDT Sat Sep 23 2023

KSZ025-103-MOZ020-021-028-231515-
Atchison KS-Leavenworth KS-Platte MO-Buchanan MO-Clinton MO-
946 AM CDT Sat Sep 23 2023

...A strong thunderstorm will impact portions of north central
Leavenworth, southeastern Atchison, Buchanan, west central Clinton
and northern Platte Counties through 1015 AM CDT...

At 946 AM CDT, Doppler radar was tracking a strong thunderstorm near
Lewis And Clark Village, or 7 miles northwest of Weston, moving
northeast at 35 mph.

HAZARD...Winds in excess of 30 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
St. Joseph, Atchison, Weston, Gower, Agency, Dearborn, Rushville,
Lewis And Clark Village, De Kalb, Iatan, Faucett, Bean Lake, Lewis
And Clark Vi and Lowemont.

This includes the following highways...
 Interstate 29 between mile markers 25 and 45.
 Interstate 229 between mile markers 0 and 2.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3934 9503 3949 9517 3978 9473 3956 9453
TIME...MOT...LOC 1446Z 235DEG 32KT 3946 9503

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...30 MPH

BT

Local storm report, Sep 23, 10:14 AM CDT, 2 hours 24 minutes before

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Local storm report, Sep 23, 10:28 AM CDT, 2 hours 10 minutes before

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Local storm report, Sep 23, 11:16 AM CDT, 1 hour 22 minutes before

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Special weather statement, Sep 23, 11:59 AM CDT, 39 minutes before

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Special weather statement, Sep 23, 12:05 PM CDT, 33 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 23, 9:21 AM CDT	Special Weather Statement	EAX	Holt	24 min
Sep 23, 9:46 AM CDT	Special Weather Statement	EAX	Buchanan	29 min
Sep 23, 10:04 AM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Clay, Clinton, Platte	26 min
Sep 23, 10:12 AM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Clay, Clinton, Platte	33 min
Sep 23, 10:31 AM CDT	Severe Thunderstorm Warning	EAX	Clay, Jackson, Platte	29 min
Sep 23, 10:54 AM CDT	Severe Thunderstorm Warning	EAX	Clay, Jackson	36 min
Sep 23, 11:30 AM CDT	Severe Thunderstorm Warning	EAX	Jackson	30 min
Sep 23, 11:47 AM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	43 min
Sep 23, 11:59 AM CDT	Special Weather Statement	EAX	Jackson	31 min
Sep 23, 12:05 PM CDT	Special Weather Statement	EAX	Daviess	25 min
Sep 23, 12:34 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Jackson, Lafayette, Ray	26 min
Sep 23, 12:58 PM CDT	Special Weather Statement	EAX	Ray	47 min
Sep 23, 1:02 PM CDT	Severe Thunderstorm Warning Considerable damage threat	EAX	Cass, Johnson	28 min
Sep 23, 1:24 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Carroll, Clay, Jackson, Livingston, Ray	36 min
Sep 23, 1:29 PM CDT	Severe Thunderstorm Warning	EAX	Henry, Johnson	31 min
Sep 23, 2:16 PM CDT	Special Weather Statement	EAX	Pettis	29 min
Sep 23, 2:37 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Pettis	23 min
Sep 23, 2:48 PM CDT	Special Weather Statement	EAX	Lafayette	27 min
Sep 23, 3:05 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Lafayette, Pettis, Saline	25 min
Sep 23, 3:27 PM CDT	Severe Thunderstorm Warning Considerable damage threat	EAX	Cooper, Pettis, Saline	33 min
Sep 23, 3:35 PM CDT	Special Weather Statement	EAX	Livingston	25 min
Sep 23, 3:59 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	31 min
Sep 23, 4:00 PM CDT	Special Weather Statement	EAX	Howard	30 min
Sep 23, 4:25 PM CDT	Special Weather Statement	EAX	Livingston	35 min
Sep 23, 4:27 PM CDT	Severe Thunderstorm Warning Considerable damage threat	EAX	Cass, Jackson, Johnson	33 min
Sep 23, 4:32 PM CDT	Severe Thunderstorm Warning	EAX	Cass	28 min
Sep 23, 4:39 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Chariton, Daviess, Grundy, Linn, Livingston	36 min
Sep 23, 4:55 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson, Johnson	50 min
Sep 23, 5:07 PM CDT	Flash Flood Warning	EAX	Cass	3 hr
Sep 23, 5:13 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Henry, Johnson	32 min
Sep 23, 5:27 PM CDT	Special Weather Statement	EAX	Chariton, Linn	33 min
Sep 23, 5:28 PM CDT	Severe Thunderstorm Warning	EAX	Cass	32 min
Sep 23, 5:35 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass, Henry, Johnson	55 min
Sep 23, 5:49 PM CDT	Special Weather Statement	EAX	Cass	26 min
Sep 23, 5:56 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Chariton, Linn, Livingston, Macon	34 min
Sep 23, 6:00 PM CDT	Severe Thunderstorm Warning	EAX	Bates	30 min
Sep 23, 6:12 PM CDT	Areal Flood Advisory	EAX	Bates, Cass, Henry, Johnson	6 hr
Sep 23, 6:25 PM CDT	Severe Thunderstorm Warning	EAX	Henry	35 min
Sep 23, 6:29 PM CDT	Severe Thunderstorm Warning	EAX	Chariton, Macon, Randolph	46 min
Sep 23, 6:29 PM CDT	Severe Thunderstorm Warning	EAX	Bates	31 min
Sep 23, 8:24 AM CDT	Special Weather Statement	EAX	Johnson	36 min
Sep 23, 8:44 AM CDT	Severe Thunderstorm Warning	EAX	Johnson, Miami	46 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2023 Every severe thunderstorm warning in 2023

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.