Alert archive / Missouri / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 312, NWS Kansas City, MO

December 28, 20194 counties in Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Dec 28, 2019, 5:22 PM CST for 4 counties in Missouri. It was in force for 38 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: Dec 28, 2019, 5:22 PM CST (23:22 UTC)
Expired: Dec 28, 2019, 6:00 PM CST
In force: 38 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Cass County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO

The radar

The Pleasant Hill radar (KEAX), 18 km from the middle of the area, began a volume at 23:24 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

Springfield, MO (KSGF), launched 12:00Z, 11.4 hours before the alert went out and 220 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 446 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 321 m²/s²
0-3 km storm-relative helicity: 312 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Dec 28, 3:34 PM CST, 1 hour 48 minutes earlier.

Area forecast discussion, Dec 28, 3:34 PM CST, 1 hour 48 minutes before

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Hazardous weather outlook, Dec 28, 3:32 AM CST, 13 hours 50 minutes before

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
332 AM CST Sat Dec 28 2019

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-290945-
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-
332 AM CST Sat Dec 28 2019

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

.DAY ONE...Today and Tonight

 Scattered rain is expected this morning, with isolated storms
possible early this afternoon. Then, a line of storms, moving from
west to east, is expected late this afternoon into the evening.
Isolated strong to severe storms are possible along the line, south
of HWY 36. A brief spin up and isolated wind gusts up to 60 mph are
possible along the line. Moderate to heavy rainfall is also expected
this afternoon and evening. Widespread amounts between 1 and 1.5
inches is expected with locally higher amounts possible.

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

.DAYS TWO THROUGH SEVEN...Sunday through Friday

 No hazardous weather is expected at this time.

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

In the hours before

Special weather statement, Dec 28, 4:12 PM CST, 1 hour 10 minutes before

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Special weather statement, Dec 28, 4:41 PM CST, 41 minutes before

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Special weather statement, Dec 28, 4:47 PM CST, 35 minutes before

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Special weather statement, Dec 28, 5:17 PM CST, 5 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
Dec 28, 9:54 AM CST	River Flood Warning	EAX	Carroll, Chariton, Linn, Livingston	3 days
Dec 28, 9:54 AM CST	River Flood Warning	EAX	Andrew, Buchanan	10 hr
Dec 28, 4:41 PM CST	Special Weather Statement	EAX	Bates, Cass	49 min
Dec 28, 4:47 PM CST	Special Weather Statement	EAX	Clay, Jackson	43 min
Dec 28, 5:05 PM CST	Severe Thunderstorm Warning	EAX	Cass, Clay, Jackson, Ray	40 min
Dec 28, 5:17 PM CST	Special Weather Statement	EAX	Caldwell, Clinton, Daviess, DeKalb	43 min
Dec 28, 5:41 PM CST	Special Weather Statement	EAX	Lafayette, Ray	49 min
Dec 28, 5:55 PM CST	Special Weather Statement	EAX	Johnson	50 min
Dec 28, 4:12 PM CST	Special Weather Statement	EAX	Johnson, Wyandotte	48 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2019 Every severe thunderstorm warning in 2019

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.