Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 150, NWS Kansas City, MO

December 15, 20215 counties in Missouri; Doniphan County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at Dec 15, 2021, 4:03 PM CST for 5 counties in Missouri; Doniphan County, Kansas. It was in force for 72 min. 12 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Dec 15, 2021, 4:03 PM CST (22:03 UTC)
Expired: Dec 15, 2021, 5:15 PM CST
In force: 72 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Damage threat: Destructive
Hail: 0.88 in
Wind: 80.0 mph

Counties Doniphan County, KS, Andrew County, MO, Atchison County, MO, Holt County, MO, Nodaway County, MO, Worth County, MO

The radar

The Omaha radar (KOAX), 136 km from the middle of the area, began a volume at 22:01 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.

What was reported inside it

Time	Report	Where	Remark
Dec 15, 4:27 PM CST	TSTM WND GST 80	2 N Watson, MO	CORRECTS PREVIOUS NON-TSTM WND GST REPORT FROM 2 N WATSON.
Dec 15, 4:27 PM CST	NON-TSTM WND GST 80	2 N Watson, MO
Dec 15, 4:37 PM CST	TSTM WND GST 60	1 W Tarkio, MO	CORRECTS PREVIOUS NON-TSTM WND GST REPORT FROM 1 W TARKIO. TRAINED SPOTTER REPORT.
Dec 15, 4:37 PM CST	NON-TSTM WND GST 60	1 W Tarkio, MO	TRAINED SPOTTER REPORT.
Dec 15, 4:48 PM CST	TSTM WND GST 70	1 W Tarkio, MO	TRAINED SPOTTER REPORTED 70 MPH WINDS RELAYED TO US BY LAW ENFORCEMENT.
Dec 15, 4:51 PM CST	TSTM WND GST 90	1 W Tarkio, MO	TRAINED SPOTTER REPORTED 90 MPH WINDS RELAYED BY LAW ENFORCEMENT.
Dec 15, 4:51 PM CST	TSTM WND GST 90	3 N Corning, MO	TRAINED SPOTTER REPORTED 90 MPH WINDS RELAYED BY LAW ENFORCEMENT.
Dec 15, 4:55 PM CST	NON-TSTM WND GST 58	2 Wnw Maryville, MO	MARYVILLE NW MISSOURI REGIONAL AIRPORT REPORTED GUST OF 58 MPH JUST AHEAD OF INCOMING LINE OF STORMS.
Dec 15, 5:12 PM CST	TSTM WND GST 74	2 N Quitman, MO	DAMAGE TO OUTBUILDINGS REPORTED.
Dec 15, 5:13 PM CST	TSTM WND GST 70	Clearmont, MO	DELAYED REPORT. A FEW WINDOWS BLOWN OUT OF A HOME.
Dec 15, 5:17 PM CST	TSTM WND DMG	1 Nw Maryville, MO	DEBRIS IN THE ROADWAY AND LIGHT POLES DOWN. TIME ESTIMATED FROM RADAR.
Dec 15, 5:17 PM CST	HAIL 1.75	Maryville, MO	GOLF BALL SIZED HAIL REPORTED ON SOUTH MAIN STREET. POWER LINES AND TREES DOWN IN TOWN. REPORTED BY LAW ENFORCEMENT RELAYED BY EMERGENCY MANAGEMENT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Dec 15, 1:23 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.1 hours before the alert went out and 136 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: 2165 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 346 m²/s²
0-3 km storm-relative helicity: 384 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

406 
WUUS53 KEAX 152203
SVREAX
KSC043-MOC003-005-087-147-227-152315-
/O.NEW.KEAX.SV.W.0150.211215T2203Z-211215T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
403 PM CST Wed Dec 15 2021

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  Northwestern Doniphan County in northeastern Kansas...
  West central Worth County in northwestern Missouri...
  Atchison County in northwestern Missouri...
  Holt County in northwestern Missouri...
  Nodaway County in northwestern Missouri...
  Andrew County in northwestern Missouri...

* Until 515 PM CST.

* At 402 PM CST, severe thunderstorms were located along a line
  extending from near Plattsmouth to near Nebraska City to 6 miles
  east of Summerfield, moving northeast at 90 mph.

  THESE ARE DESTRUCTIVE STORMS FOR FAR NORTHWESTERN MISSOURI.

  HAZARD...80 mph wind gusts and nickel size hail.

  SOURCE...Trained weather spotters.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be heavily damaged. Expect 
           considerable damage to roofs, windows, and vehicles. 
           Extensive tree damage and power outages are likely.

* Locations impacted include...
  Maryville, Savannah, Tarkio, Mound City, Highland, Rock Port,
  Oregon, Fairfax, Burlington Junction, Hopkins, Ravenwood, Maitland,
  Skidmore, Forest City, Craig, Fillmore, White Cloud, Barnard,
  Conception Junction and Sheridan.

This includes Interstate 29 between mile markers 61 and 123.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CST for northeastern
Kansas...and northwestern Missouri.

For your protection move to an interior room on the lowest floor of a
building.

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage across southeastern Nebraska and northeastern Kansas. 
SEEK SHELTER NOW inside a sturdy structure and stay away from 
windows! A Tornado Watch remains in effect until 800 PM CST for 
northeastern Kansas...and northwestern Missouri.

&&

LAT...LON 4058 9577 4057 9461 3998 9461 3983 9533
      4000 9534 4000 9531 4003 9540 4012 9539
      4018 9548 4024 9547 4026 9555 4030 9556
      4031 9566 4034 9562 4041 9566 4046 9564
      4048 9570 4054 9565 4056 9568 4052 9575
TIME...MOT...LOC 2202Z 234DEG 79KT 4101 9600 4062 9593 3998 9623 

THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...OBSERVED
MAX WIND GUST...80 MPH

$$

CDB

2 follow-up statements

454 
WWUS53 KEAX 152229
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
429 PM CST Wed Dec 15 2021

KSC043-MOC003-005-087-147-227-152315-
/O.CON.KEAX.SV.W.0150.000000T0000Z-211215T2315Z/
Doniphan KS-Worth MO-Atchison MO-Holt MO-Nodaway MO-Andrew MO-
429 PM CST Wed Dec 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CST
FOR NORTHWESTERN DONIPHAN...WEST CENTRAL WORTH...ATCHISON...HOLT...
NODAWAY AND ANDREW COUNTIES...

At 428 PM CST, severe thunderstorms were located along a line
extending from near Sidney to near Peru to 7 miles north of Sabetha,
moving northeast at 90 mph.

THESE ARE DESTRUCTIVE STORMS FOR FAR NORTHWESTERN MISSOURI.

HAZARD...80 mph wind gusts and nickel size hail.

SOURCE...Trained weather spotters.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be heavily damaged. Expect 
         considerable damage to roofs, windows, and vehicles. 
         Extensive tree damage and power outages are likely.

Locations impacted include...
Maryville, Savannah, Tarkio, Mound City, Highland, Rock Port, Oregon,
Fairfax, Burlington Junction, Hopkins, Ravenwood, Maitland, Skidmore,
Forest City, Craig, Fillmore, White Cloud, Barnard, Conception
Junction and Sheridan.

This includes Interstate 29 between mile markers 61 and 123.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CST for northeastern
Kansas...and northwestern Missouri.

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage across southeastern Nebraska. SEEK SHELTER NOW inside a 
sturdy structure and stay away from windows.
 
&&

LAT...LON 4058 9577 4057 9461 3998 9461 3983 9533
      4000 9534 4000 9531 4003 9540 4012 9539
      4018 9548 4024 9547 4026 9555 4030 9556
      4031 9566 4034 9562 4041 9566 4046 9564
      4048 9570 4054 9565 4056 9568 4052 9575
TIME...MOT...LOC 2228Z 232DEG 77KT 4080 9556 4048 9563 4002 9582 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...OBSERVED
MAX WIND GUST...80 MPH

$$

CDB

932 
WWUS53 KEAX 152248
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
448 PM CST Wed Dec 15 2021

KSC043-MOC003-005-087-147-227-152315-
/O.CON.KEAX.SV.W.0150.000000T0000Z-211215T2315Z/
Doniphan KS-Worth MO-Atchison MO-Holt MO-Nodaway MO-Andrew MO-
448 PM CST Wed Dec 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CST
FOR NORTHWESTERN DONIPHAN...WEST CENTRAL WORTH...ATCHISON...HOLT...
NODAWAY AND ANDREW COUNTIES...

At 446 PM CST, severe thunderstorms were located along a line
extending from 7 miles west of Blanchard to 7 miles northwest of
Craig to 6 miles west of White Cloud, moving northeast at 80 mph.

THESE ARE DESTRUCTIVE STORMS FOR FAR NORTHWESTERN MISSOURI.

HAZARD...80 mph wind gusts and nickel size hail.

SOURCE...Trained weather spotters reported 80 mph winds near Watson, 
         Missouri.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be heavily damaged. Expect 
         considerable damage to roofs, windows, and vehicles. 
         Extensive tree damage and power outages are likely.

Locations impacted include...
Maryville, Savannah, Tarkio, Mound City, Highland, Rock Port, Oregon,
Fairfax, Burlington Junction, Hopkins, Ravenwood, Maitland, Skidmore,
Forest City, Craig, Fillmore, White Cloud, Barnard, Conception
Junction and Sheridan.

This includes Interstate 29 between mile markers 61 and 123.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CST for northeastern
Kansas...and northwestern Missouri.

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage across northwestern Missouri. SEEK SHELTER NOW inside a 
sturdy structure and stay away from windows.
 
&&

LAT...LON 4058 9577 4057 9461 3998 9461 3983 9533
      4000 9534 4000 9531 4003 9540 4012 9539
      4018 9548 4024 9547 4026 9555 4030 9556
      4031 9566 4034 9562 4041 9566 4046 9564
      4048 9570 4054 9565 4056 9568 4052 9575
TIME...MOT...LOC 2246Z 228DEG 69KT 4060 9537 4025 9549 3996 9542 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...OBSERVED
MAX WIND GUST...80 MPH

$$

CDB

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 15, 4:43 PM CST	Severe Thunderstorm Warning Destructive damage threat	EAX	Andrew, Buchanan, Holt, Platte	62 min
Dec 15, 4:51 PM CST	Tornado Warning	EAX	Andrew, Holt, Nodaway	39 min
Dec 15, 5:03 PM CST	Tornado Warning	EAX	Andrew, Buchanan	27 min
Dec 15, 5:12 PM CST	Severe Thunderstorm Warning Destructive damage threat	EAX	Andrew, Buchanan, Daviess, DeKalb, Gentry, Harrison and 3 more	78 min
Dec 15, 5:18 PM CST	Severe Thunderstorm Warning Considerable damage threat	EAX	Clay, Clinton, DeKalb, Platte	57 min
Dec 15, 5:31 PM CST	Severe Thunderstorm Warning Considerable damage threat	EAX	Johnson, Miami	44 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2021 Severe Thunderstorm Warnings in Kansas, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.