Alert archive / Kansas / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 63, NWS Kansas City, MO

April 20, 2023Johnson County, Leavenworth County, Wyandotte County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at Apr 20, 2023, 3:19 AM CDT for Johnson County, Leavenworth County, Wyandotte County, Kansas. It was in force for 26 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: Apr 20, 2023, 3:19 AM CDT (08:19 UTC)
Expired: Apr 20, 2023, 3:45 AM CDT
In force: 26 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Johnson County, KS, Leavenworth County, KS, Wyandotte County, KS

The radar

The Pleasant Hill radar (KEAX), 60 km from the middle of the area, began a volume at 08:22 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
Apr 19, 10:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 8.3 hours before the alert went out and 67 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: 1951 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1353 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 309 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 10.0

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 Apr 20, 12:57 AM CDT, 2 hours 22 minutes earlier.

Area forecast discussion, Apr 20, 12:57 AM CDT, 2 hours 22 minutes before

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Hazardous weather outlook, Apr 19, 12:45 PM CDT, 14 hours 34 minutes before

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
1245 PM CDT Wed Apr 19 2023

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-201745-
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-
1245 PM CDT Wed Apr 19 2023

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

.DAY ONE...This Afternoon and Tonight

 Strong to severe storms are possible this evening and overnight
 across northeastern KS and northwestern MO. Large hail, damaging
 winds, and a few tornadoes are possible. Locally heavy rainfall is
 also possible.

 Strong non-thunderstorm wind gusts are expected this evening and
 overnight. Wind gusts to 45 mph are expected.

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

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

 Widespread subfreezing temperatures are expected Sunday morning.

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

In the hours before

Special weather statement, Apr 19, 10:02 PM CDT, 5 hours 17 minutes before

Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
1002 PM CDT Wed Apr 19 2023

KSZ103>105-MOZ021-022-028>030-200345-
Johnson KS-Wyandotte KS-Leavenworth KS-Platte MO-Ray MO-Clinton MO-
Caldwell MO-Clay MO-
1002 PM CDT Wed Apr 19 2023

...A strong thunderstorm will impact portions of Wyandotte,
Leavenworth, northwestern Johnson, Clinton, Clay, northwestern Ray,
southwestern Caldwell and Platte Counties through 1045 PM CDT...

At 1001 PM CDT, Doppler radar was tracking a strong thunderstorm near
Platte City, moving northeast at 35 mph.

HAZARD...Wind gusts up to 50 mph and half inch 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...
Shawnee, Leavenworth, Liberty, Gladstone, Lansing, Excelsior Springs,
Smithville, Kearney, Bonner Springs, De Soto, Parkville, Tonganoxie,
Platte City, Basehor, Edwardsville, North Kansas City, Riverside,
Lawson, Plattsburg and Lathrop.

This includes the following highways...
 Interstate 70 in Kansas between mile markers 410 and 419.
 Interstate 35 in Missouri between mile markers 7 and 50.
 Interstate 29 between mile markers 0 and 26.
 Interstate 635 between mile markers 4 and 12.
 Interstate 435 between mile markers 8 and 53.
 Kansas Turnpike between mile markers 206 and 226.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

A Tornado Watch remains in effect until 1100 PM CDT for northwestern
Missouri.

&&

LAT...LON 3921 9518 3954 9468 3953 9460 3959 9460
      3973 9437 3970 9419 3938 9410 3890 9506
      3899 9507 3898 9509 3896 9508 3898 9516
      3896 9517 3897 9519
TIME...MOT...LOC 0301Z 241DEG 32KT 3931 9474

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

PP

Special weather statement, Apr 19, 10:15 PM CDT, 5 hours 4 minutes before

Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
1015 PM CDT Wed Apr 19 2023

MOZ014-021>023-030-031-200345-
Ray MO-Carroll MO-Clinton MO-Daviess MO-Livingston MO-Caldwell MO-
1015 PM CDT Wed Apr 19 2023

...A strong thunderstorm will impact portions of southeastern
Daviess, east central Clinton, northern Ray, northwestern Carroll,
Caldwell and southwestern Livingston Counties through 1045 PM CDT...

At 1014 PM CDT, Doppler radar was tracking a strong thunderstorm near
Polo, or 10 miles northeast of Lawson, moving northeast at 35 mph.

HAZARD...Wind gusts up to 50 mph and half inch 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...
Lawson, Hamilton, Braymer, Polo, Breckenridge, Kingston, Cowgill,
Excelsior Estates, Kidder, Ludlow, Mooresville, Lock Springs, Elmira,
Knoxville and Dawn.

This includes Interstate 35 in Missouri between mile markers 50 and
51.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3995 9375 3949 9354 3938 9421 3945 9421
      3946 9422 3972 9423
TIME...MOT...LOC 0314Z 243DEG 31KT 3957 9413

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

CDB

Special weather statement, Apr 19, 10:46 PM CDT, 4 hours 33 minutes before

Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
1046 PM CDT Wed Apr 19 2023

MOZ014-022-023-200415-
Daviess MO-Livingston MO-Caldwell MO-
1046 PM CDT Wed Apr 19 2023

...A strong thunderstorm will impact portions of southeastern
Daviess, northeastern Caldwell and Livingston Counties through 1115
PM CDT...

At 1045 PM CDT, Doppler radar was tracking a strong thunderstorm near
Breckenridge, or 9 miles east of Hamilton, moving northeast at 45
mph.

HAZARD...Wind gusts up to 50 mph and half inch 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...
Chillicothe, Braymer, Breckenridge, Utica, Chula, Ludlow,
Mooresville, Lock Springs, Dawn, Spring Hill and Avalon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3968 9336 3961 9363 3961 9375 3957 9376
      3956 9381 3979 9396 3996 9359 3997 9350
      3996 9349
TIME...MOT...LOC 0345Z 244DEG 39KT 3969 9383

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

CDB

Special weather statement, Apr 19, 11:52 PM CDT, 3 hours 27 minutes before

Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
1152 PM CDT Wed Apr 19 2023

MOZ007-008-016-017-024-025-200530-
Schuyler MO-Putnam MO-Adair MO-Macon MO-Linn MO-Sullivan MO-
1152 PM CDT Wed Apr 19 2023

...Strong thunderstorms will impact portions of Adair, northeastern
Linn, Sullivan, Putnam, western Schuyler and northwestern Macon
Counties through 1230 AM CDT...

At 1151 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 11 miles southwest of Unionville to 10 miles
northwest of Bucklin. Movement was northeast at 55 mph.

HAZARD...Wind gusts up to 50 mph and half inch 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...
Kirksville, Milan, Unionville, La Plata, Green City, Queen City,
Novinger, Greentop, Greencastle, Gibbs, Millard, Pollock,
Worthington, Elmer, Livonia, South Gifford, Kirksville Regional, New
Boston, Winigan and Lemons.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4010 9236 3979 9299 4038 9325 4058 9309
      4059 9263
TIME...MOT...LOC 0451Z 217DEG 46KT 4037 9317 3992 9297

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

CDB

Local storm report, Apr 20, 12:02 AM CDT, 3 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1202 AM CDT THU APR 20 2023

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

1038 PM     HAIL             TONGANOXIE              39.11N 95.09W
04/19/2023  E1.00 INCH       LEAVENWORTH        KS   PUBLIC

&&

SM

Special weather statement, Apr 20, 12:19 AM CDT, 3 hours 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
Apr 19, 7:48 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt	42 min
Apr 19, 8:25 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt, Nodaway	35 min
Apr 19, 8:53 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Atchison, Holt, Nodaway	24 min
Apr 19, 8:55 PM CDT	Special Weather Statement	EAX	Andrew	35 min
Apr 19, 9:33 PM CDT	Special Weather Statement	EAX	Clay, Platte	27 min
Apr 19, 10:02 PM CDT	Special Weather Statement	EAX	Clay, Clinton, Platte	43 min
Apr 19, 10:15 PM CDT	Special Weather Statement	EAX	Caldwell	30 min
Apr 19, 10:46 PM CDT	Special Weather Statement	EAX	Livingston	29 min
Apr 19, 10:56 PM CDT	Severe Thunderstorm Warning	EAX	Platte	20 min
Apr 19, 11:52 PM CDT	Special Weather Statement	EAX	Adair, Putnam, Sullivan	38 min
Apr 20, 12:07 AM CDT	Severe Thunderstorm Warning	EAX	Andrew, Holt	23 min
Apr 20, 12:19 AM CDT	Special Weather Statement	EAX	Schuyler	26 min
Apr 20, 3:43 AM CDT	Severe Thunderstorm Warning	EAX	Platte	32 min
Apr 20, 4:07 AM CDT	Special Weather Statement	EAX	Clinton, Platte	38 min
Apr 20, 4:12 AM CDT	Special Weather Statement	EAX	Holt	33 min
Apr 20, 4:18 AM CDT	Special Weather Statement	EAX	Holt	27 min
Apr 20, 4:19 AM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	29 min
Apr 20, 4:25 AM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Holt	35 min
Apr 20, 4:57 AM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Clinton, DeKalb, Gentry, Nodaway and 1 more	48 min
Apr 20, 5:11 AM CDT	Severe Thunderstorm Warning	EAX	Platte	25 min
Apr 20, 5:43 AM CDT	Special Weather Statement	EAX	Caldwell, Clay, Clinton	47 min
Apr 20, 6:23 AM CDT	Special Weather Statement	EAX	Carroll, Cass, Jackson, Lafayette, Ray	37 min
Apr 20, 6:37 AM CDT	Special Weather Statement	EAX	Randolph	23 min
Apr 20, 7:01 AM CDT	Areal Flood Advisory	EAX	Cass, Clay, Jackson, Platte	64 min
Apr 19, 8:16 PM CDT	Special Weather Statement	EAX	Atchison	29 min
Apr 19, 8:49 PM CDT	Special Weather Statement	EAX	Leavenworth, Wyandotte	41 min
Apr 19, 10:24 PM CDT	Severe Thunderstorm Warning	EAX	Leavenworth, Wyandotte	36 min
Apr 20, 3:04 AM CDT	Severe Thunderstorm Warning	EAX	Johnson, Miami	26 min
Apr 20, 3:48 AM CDT	Severe Thunderstorm Warning	EAX	Johnson, Miami	42 min

Nearby

Severe Thunderstorm Warnings in Kansas, 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.