Alert archive / Kansas / Tornado Warnings in 2021

Tornado Warning 11, NWS Topeka, KS

December 15, 2021Jackson County, Pottawatomie County, Kansas

NWS Topeka, KS issued this tornado warning at Dec 15, 2021, 3:57 PM CST for Jackson County, Pottawatomie County, Kansas. It was in force for 10 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Dec 15, 2021, 3:57 PM CST (21:57 UTC)
Expired: Dec 15, 2021, 4:07 PM CST
In force: 10 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Jackson County, KS, Pottawatomie County, KS

The radar

The Topeka radar (KTWX), 42 km from the middle of the area, began a volume at 21:59 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
Dec 15, 1:23 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 10.0 hours before the alert went out and 68 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.

065 
WFUS53 KTOP 152157
TORTOP
KSC085-149-152230-
/O.NEW.KTOP.TO.W.0011.211215T2157Z-211215T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Topeka KS
357 PM CST Wed Dec 15 2021

The National Weather Service in Topeka has issued a

* Tornado Warning for...
  Northeastern Pottawatomie County in northeastern Kansas...
  West central Jackson County in northeastern Kansas...

* Until 430 PM CST.
    
* At 356 PM CST, a severe thunderstorm capable of producing a tornado
  was located 4 miles southwest of Westmoreland, moving northeast at
  70 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Onaga around 415 PM CST.
  Havensville around 420 PM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3928 9647 3935 9649 3956 9601 3940 9591
TIME...MOT...LOC 2156Z 243DEG 59KT 3933 9645 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Gargan

3 follow-up statements

670 
WWUS53 KTOP 152201
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
401 PM CST Wed Dec 15 2021

KSC085-149-152230-
/O.CON.KTOP.TO.W.0011.000000T0000Z-211215T2230Z/
Pottawatomie-Jackson-
401 PM CST Wed Dec 15 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CST FOR
NORTHEASTERN POTTAWATOMIE AND WEST CENTRAL JACKSON COUNTIES...
    
At 400 PM CST, a severe thunderstorm capable of producing a tornado
was located 1 mile south of Westmoreland, moving northeast at 60 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Onaga around 410 PM CST.
  Havensville around 415 PM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3933 9639 3938 9643 3956 9601 3945 9594
TIME...MOT...LOC 2200Z 239DEG 61KT 3938 9637 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Gargan

851 
WWUS53 KTOP 152203
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
403 PM CST Wed Dec 15 2021

KSC085-149-152230-
/O.CON.KTOP.TO.W.0011.000000T0000Z-211215T2230Z/
Pottawatomie-Jackson-
403 PM CST Wed Dec 15 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CST FOR
NORTHEASTERN POTTAWATOMIE AND NORTHWESTERN JACKSON COUNTIES...
    
At 403 PM CST, a severe thunderstorm capable of producing a tornado
was located 6 miles east of Westmoreland, moving northeast at 65 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Onaga around 410 PM CST.
  Havensville around 415 PM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3937 9634 3941 9636 3956 9601 3945 9594
TIME...MOT...LOC 2203Z 238DEG 66KT 3941 9630 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Gargan

231 
WWUS53 KTOP 152207
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
407 PM CST Wed Dec 15 2021

KSC085-149-152215-
/O.CAN.KTOP.TO.W.0011.000000T0000Z-211215T2230Z/
Pottawatomie-Jackson-
407 PM CST Wed Dec 15 2021

...THE TORNADO WARNING FOR NORTHEASTERN POTTAWATOMIE AND NORTHWESTERN
JACKSON COUNTIES IS CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been 
cancelled. However, damaging winds remain likely and a Severe 
Thunderstorm Warning remains in effect for the area.

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

Remember, a Severe Thunderstorm Warning still remains in effect for
Pottawatomie and Jackson Counties.

LAT...LON 3937 9634 3941 9636 3956 9601 3945 9594
TIME...MOT...LOC 2205Z 243DEG 59KT 3943 9625 

$$

Gargan

The office that day

Everything else NWS Topeka, KS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 15, 1:57 PM CST	Severe Thunderstorm Warning Destructive damage threat	TOP	Cloud, Ottawa, Republic	48 min
Dec 15, 2:42 PM CST	Severe Thunderstorm Warning Destructive damage threat	TOP	Clay, Cloud, Dickinson, Marshall, Ottawa, Republic and 2 more	48 min
Dec 15, 3:00 PM CST	Severe Thunderstorm Warning Destructive damage threat	TOP	Dickinson, Geary, Morris	45 min
Dec 15, 3:01 PM CST	Blowing Dust Advisory	TOP	Clay, Cloud, Dickinson, Ottawa, Republic, Washington	3 hr
Dec 15, 3:19 PM CST	Severe Thunderstorm Warning Destructive damage threat	TOP	Clay, Dickinson, Geary, Jackson, Marshall, Nemaha and 4 more	41 min
Dec 15, 3:29 PM CST	Tornado Warning	TOP	Dickinson, Geary, Riley	13 min
Dec 15, 3:33 PM CST	Tornado Warning	TOP	Pottawatomie, Riley	15 min
Dec 15, 3:39 PM CST	Severe Thunderstorm Warning Destructive damage threat	TOP	Geary, Morris, Wabaunsee	51 min
Dec 15, 3:54 PM CST	Severe Thunderstorm Warning Destructive damage threat	TOP	Brown, Geary, Jackson, Marshall, Nemaha, Pottawatomie and 3 more	51 min
Dec 15, 4:10 PM CST	Tornado Warning	TOP	Nemaha, Pottawatomie	20 min
Dec 15, 4:20 PM CST	Severe Thunderstorm Warning Destructive damage threat	TOP	Lyon, Morris, Osage, Shawnee, Wabaunsee	40 min
Dec 15, 4:33 PM CST	Severe Thunderstorm Warning Destructive damage threat	TOP	Brown, Jackson, Jefferson, Shawnee	27 min
Dec 15, 4:35 PM CST	Severe Thunderstorm Warning Destructive damage threat	TOP	Coffey, Lyon, Osage	40 min
Dec 15, 4:53 PM CST	Severe Thunderstorm Warning Destructive damage threat	TOP	Douglas, Franklin, Jefferson, Lyon, Osage, Shawnee and 1 more	37 min
Dec 15, 4:54 PM CST	Severe Thunderstorm Warning Destructive damage threat	TOP	Brown, Douglas, Jackson, Jefferson, Shawnee	51 min
Dec 15, 5:09 PM CST	Severe Thunderstorm Warning Considerable damage threat	TOP	Franklin, Osage	36 min
Dec 15, 5:15 PM CST	Severe Thunderstorm Warning Destructive damage threat	TOP	Anderson, Coffey, Franklin, Lyon, Osage	45 min
Dec 15, 5:24 PM CST	Severe Thunderstorm Warning Destructive damage threat	TOP	Douglas, Franklin, Jefferson, Osage, Shawnee	36 min
Dec 15, 5:42 PM CST	Severe Thunderstorm Warning Considerable damage threat	TOP	Franklin, Osage	33 min
Dec 15, 5:54 PM CST	Severe Thunderstorm Warning Considerable damage threat	TOP	Anderson, Coffey, Franklin, Osage	36 min
Dec 15, 5:57 PM CST	Severe Thunderstorm Warning	TOP	Douglas, Franklin	18 min

Nearby

Tornado Warnings in Kansas, 2021 Every tornado warning in 2021 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.