Alert archive / Missouri / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 56, NWS Kansas City, MO

May 21, 2019Atchison County, Holt County, Nodaway County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at May 21, 2019, 11:15 PM CDT for Atchison County, Holt County, Nodaway County, Missouri. It was in force for 30 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: May 21, 2019, 11:15 PM CDT (04:15 UTC)
Expired: May 21, 2019, 11:45 PM CDT
In force: 30 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Atchison County, MO, Holt County, MO, Nodaway County, MO

The radar

The Omaha radar (KOAX), 152 km from the middle of the area, began a volume at 04:19 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 (KFOE), launched 00:00Z, 4.3 hours before the alert went out and 149 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: 808 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1090 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 176 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.0

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 May 21, 10:49 PM CDT, 26 minutes earlier.

Area forecast discussion, May 21, 10:49 PM CDT, 26 minutes before

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Hazardous weather outlook, May 21, 4:18 AM CDT, 18 hours 57 minutes before

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
418 AM CDT Tue May 21 2019

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-220930-
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-
418 AM CDT Tue May 21 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

Another round of thunderstorms are expected this morning into the
afternoon. Severe weather in the form of large hail, damaging winds,
and isolated tornadoes will be possible. Flash flooding will be
possible in the strongest activity.

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

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Active weather will continue late in the workweek into the weekend as
additional rounds of showers and thunderstorms occur. River flooding
will be ongoing.

Blair

In the hours before

Local storm report, May 21, 7:20 PM CDT, 3 hours 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
720 PM CDT TUE MAY 21 2019

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

0712 PM     TORNADO          5 NE MUSCOTAH           39.60N 95.44W
05/21/2019                   ATCHISON           KS   TRAINED SPOTTER

            BRIEF TOUCHDOWN REPORTED BY TRAINED SPOTTER.
            RELAYED FROM NWS TOP.

&&

32

Local storm report, May 21, 7:54 PM CDT, 3 hours 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
754 PM CDT TUE MAY 21 2019

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

0719 PM     TORNADO          4 SW HURON              39.61N 95.41W
05/21/2019                   ATCHISON           KS   EMERGENCY MNGR

            ACTIVE TORNADO AT 310TH AN EDWARDS RD.

&&

32

Local storm report, May 21, 7:55 PM CDT, 3 hours 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
755 PM CDT TUE MAY 21 2019

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

0754 PM     TSTM WND GST     6 NNW EDGERTON          38.85N 95.05W
05/21/2019  E50 MPH          JOHNSON            KS   TRAINED SPOTTER

            50 MPH WIND GUSTS AND PEA SIZE HAIL.

&&

32

Special weather statement, May 21, 7:56 PM CDT, 3 hours 19 minutes before

Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
756 PM CDT Tue May 21 2019

MOZ020-021-028-029-220130-
Platte MO-Buchanan MO-Clinton MO-Clay MO-
756 PM CDT Tue May 21 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN BUCHANAN...
NORTHWESTERN CLAY...CLINTON AND NORTHEASTERN PLATTE COUNTIES UNTIL
830 PM CDT...

At 756 PM CDT, Doppler radar was tracking a strong thunderstorm over
Trimble, or 7 miles north of Smithville, moving northeast at 35 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Cameron, Smithville, Plattsburg, Gower, Stewartsville, Trimble,
Edgerton, Osborn, Easton, Turney and Ridgely.

This includes Interstate 35 in Missouri between mile markers 51 and
53.

LAT...LON 3975 9464 3975 9423 3974 9421 3972 9421
      3939 9459 3951 9476
TIME...MOT...LOC 0056Z 224DEG 31KT 3949 9459

PP

Special weather statement, May 21, 9:02 PM CDT, 2 hours 13 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
May 21, 7:25 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Platte	35 min
May 21, 7:47 PM CDT	Tornado Warning	EAX	Andrew, Holt	28 min
May 21, 7:56 PM CDT	Special Weather Statement	EAX	Clinton	34 min
May 21, 8:06 PM CDT	Tornado Warning	EAX	Atchison	24 min
May 21, 8:25 PM CDT	Tornado Warning	EAX	Atchison	20 min
May 21, 8:34 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Clay, Clinton, Daviess, DeKalb, Gentry	26 min
May 21, 8:59 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Clinton, Daviess, DeKalb, Gentry, Harrison	23 min
May 21, 9:02 PM CDT	Special Weather Statement	EAX	Nodaway	13 min
May 22, 3:09 AM CDT	Flash Flood Watch	EAX	Bates, Cass, Chariton, Cooper, Henry, Howard and 5 more	24 hr
May 22, 5:29 AM CDT	River Flood Warning	EAX	Atchison, Holt	35 hr
May 22, 8:15 AM CDT	River Flood Warning	EAX	Andrew, Buchanan	32 hr
May 22, 6:30 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass	45 min
May 22, 6:42 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	33 min
May 22, 6:53 PM CDT	Special Weather Statement	EAX	Lafayette	37 min
May 22, 6:58 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Lafayette, Saline	47 min
May 21, 7:11 PM CDT	Tornado Warning	EAX	Atchison, Doniphan	21 min
May 21, 7:26 PM CDT	Tornado Warning Tornado observed	EAX	Atchison, Doniphan	34 min
May 22, 4:41 PM CDT	Special Weather Statement	EAX	Miami	49 min
May 22, 5:27 PM CDT	Special Weather Statement	EAX	Johnson	33 min
May 22, 6:03 PM CDT	Severe Thunderstorm Warning	EAX	Linn, Miami	42 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.