Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 154, NWS Kansas City, MO

December 15, 2021Johnson County, Miami County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at Dec 15, 2021, 5:31 PM CST for Johnson County, Miami County, Kansas. It was in force for 44 min. 5 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, 5:31 PM CST (23:31 UTC)
Expired: Dec 15, 2021, 6:15 PM CST
In force: 44 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Damage threat: Considerable
Hail: 1.5 in
Wind: 70.0 mph

Counties Johnson County, KS, Miami County, KS

The radar

The Pleasant Hill radar (KEAX), 57 km from the middle of the area, began a volume at 23:33 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, 5:46 PM CST	NON-TSTM WND DMG	2 Ssw Merriam, KS	LARGE TREE ON HOUSE NEAR 73RD ST AND SWITZER ROAD.
Dec 15, 5:48 PM CST	TSTM WND DMG	1 Se Merriam, KS	MERRIAM POLICE REPORT MULTIPLE TREES AND POWER LINES DOWN. TIME ESTIMATED FROM RADAR AND SOCIAL MEDIA.
Dec 15, 5:52 PM CST	HAIL 1	3 N Clare, KS	REPORT VIA SOCIAL MEDIA. TIME ESTIMATED VIA RADAR.
Dec 15, 5:54 PM CST	TSTM WND DMG	2 E De Soto, KS	TREE ON HOUSE NEAR 83RD AND CORLISS RD, DE SOTO KS. TIME ESTIMATED VIA RADAR.
Dec 15, 6:01 PM CST	TSTM WND DMG	2 Wsw Merriam, KS	TREE ON HOUSE NEAR W 67TH ST AND NIEMAN RD. TIME ESTIMATED VIA RADAR.

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, 3:18 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 11.5 hours before the alert went out and 64 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: 1036 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 466 m²/s²
0-3 km storm-relative helicity: 477 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

716 
WUUS53 KEAX 152331
SVREAX
KSC091-121-160015-
/O.NEW.KEAX.SV.W.0154.211215T2331Z-211216T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
531 PM CST Wed Dec 15 2021

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  Northern Miami County in east central Kansas...
  Johnson County in east central Kansas...

* Until 615 PM CST.

* At 531 PM CST, a severe thunderstorm was located near Ottawa,
  moving northeast at 70 mph.

  HAZARD...70 mph wind gusts and ping pong ball size hail.

  SOURCE...Trained weather spotters.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           considerable tree damage. Wind damage is also likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Overland Park, Olathe, Shawnee, Lenexa, Leawood, Prairie Village,
  Gardner, Merriam, Mission, Bonner Springs, De Soto, Paola, Spring
  Hill, Edwardsville, Louisburg, Fairway, Mission Hills, Edgerton,
  Westwood and Lake Quivira.

This includes the following highways...
 Interstate 35 in Kansas between mile markers 200 and 230.
 Interstate 635 near mile marker 0.
 Interstate 435 between mile markers 0 and 7, and between mile
markers 76 and 83.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

&&

LAT...LON 3897 9505 3899 9502 3900 9502 3898 9497
      3899 9494 3898 9492 3901 9489 3906 9487
      3906 9482 3904 9480 3904 9461 3861 9461
      3854 9507
TIME...MOT...LOC 2331Z 246DEG 60KT 3863 9535 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

CDB

1 follow-up statement

414 
WWUS53 KEAX 152341
SVSEAX

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

KSC091-121-160015-
/O.CON.KEAX.SV.W.0154.000000T0000Z-211216T0015Z/
Miami KS-Johnson KS-
541 PM CST Wed Dec 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CST
FOR NORTHERN MIAMI AND JOHNSON COUNTIES...

At 541 PM CST, a severe thunderstorm was located near Wellsville, or
near Baldwin City, moving northeast at 70 mph.

HAZARD...Tennis ball size hail and 70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

Locations impacted include...
Overland Park, Olathe, Shawnee, Lenexa, Leawood, Prairie Village,
Gardner, Merriam, Mission, Bonner Springs, De Soto, Paola, Spring
Hill, Edwardsville, Louisburg, Fairway, Mission Hills, Edgerton,
Westwood and Lake Quivira.

This includes the following highways...
 Interstate 35 in Kansas between mile markers 200 and 230.
 Interstate 635 near mile marker 0.
 Interstate 435 between mile markers 0 and 7, and between mile
markers 76 and 83.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

&&

LAT...LON 3897 9505 3899 9502 3900 9502 3898 9497
      3899 9494 3898 9492 3901 9489 3906 9487
      3906 9482 3904 9480 3904 9461 3861 9461
      3854 9507
TIME...MOT...LOC 2341Z 246DEG 60KT 3870 9515 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 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, 4:03 PM CST	Severe Thunderstorm Warning Destructive damage threat	EAX	Doniphan	72 min
Dec 15, 4:43 PM CST	Severe Thunderstorm Warning Destructive damage threat	EAX	Atchison, Doniphan	62 min
Dec 15, 4:51 PM CST	Tornado Warning	EAX	Doniphan	39 min
Dec 15, 5:03 PM CST	Tornado Warning	EAX	Atchison, Doniphan	27 min
Dec 15, 5:12 PM CST	Severe Thunderstorm Warning Destructive damage threat	EAX	Doniphan	78 min
Dec 15, 5:18 PM CST	Severe Thunderstorm Warning Considerable damage threat	EAX	Atchison, Leavenworth, Wyandotte	57 min

Nearby

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.