Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 181, NWS Topeka, KS

December 15, 20214 counties in Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Dec 15, 2021, 4:33 PM CST for 4 counties in Kansas. It was in force for 27 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, 4:33 PM CST (22:33 UTC)
Expired: Dec 15, 2021, 5:00 PM CST
In force: 27 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Damage threat: Destructive
Hail: 0.75 in
Wind: 80.0 mph

Counties Brown County, KS, Jackson County, KS, Jefferson County, KS, Shawnee County, KS

The radar

The Topeka radar (KTWX), 83 km from the middle of the area, began a volume at 22:35 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, 4:43 PM CST	TSTM WND GST 70	5 Wnw Mayetta, KS
Dec 15, 4:45 PM CST	TSTM WND DMG	2 W Mayetta, KS	DELAYED REPORT OF A METAL POLE BARN BLOWN DOWN AND COMPLETELY DESTROYED.
Dec 15, 4:46 PM CST	NON-TSTM WND DMG	4 Sse Ozawkie, KS	EMERGENCY MANAGER REPORTS TREES DOWN, POLES ON FIRE, AND A BOAT THAT OVERTURNED WITH A WATER RESCUE IN PROGRESS.
Dec 15, 4:54 PM CST	TSTM WND DMG	2 Nne Everest, KS	DELAYED REPORT FROM MPING: 1-INCH TREE LIMBS BROKEN; SHINGLES BLOWN OFF.
Dec 15, 5:04 PM CST	TSTM WND GST 64	3 Ene Topeka, KS	ASOS STATION KTOP TOPEKA.

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
Dec 15, 3:18 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 10.6 hours before the alert went out and 50 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.

754 
WUUS53 KTOP 152233
SVRTOP
KSC013-085-087-177-152300-
/O.NEW.KTOP.SV.W.0181.211215T2233Z-211215T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
433 PM CST Wed Dec 15 2021

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  Jefferson County in northeastern Kansas...
  Northeastern Shawnee County in east central Kansas...
  Eastern Jackson County in northeastern Kansas...
  Brown County in northeastern Kansas...

* Until 500 PM CST.

* At 432 PM CST, severe thunderstorms were located along a line
  extending from near Falls City to 4 miles northwest of Dover,
  moving east at 60 mph.

  THESE ARE DESTRUCTIVE STORMS FOR the warned area.

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

  SOURCE...Radar indicated.

  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...
  Northern Topeka, Holton, Hiawatha, Horton, Valley Falls, Oskaloosa,
  Silver Lake, Perry, McLouth, Meriden, Hoyt, Ozawkie, Nortonville,
  Winchester, Mayetta, Everest, Robinson, Whiting, Denison and
  Netawaka.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

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

&&

LAT...LON 3965 9534 3965 9556 3942 9557 3942 9518
      3904 9519 3905 9538 3907 9544 3905 9550
      3906 9591 4000 9558 4000 9534
TIME...MOT...LOC 2232Z 273DEG 52KT 4009 9561 3901 9599 

THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...80 MPH

$$

Gargan

1 follow-up statement

713 
WWUS53 KTOP 152248
SVSTOP

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

KSC013-085-087-177-152300-
/O.CON.KTOP.SV.W.0181.000000T0000Z-211215T2300Z/
Jefferson-Shawnee-Jackson-Brown-
448 PM CST Wed Dec 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CST
FOR JEFFERSON...NORTHEASTERN SHAWNEE...EASTERN JACKSON AND BROWN
COUNTIES...

At 448 PM CST, severe thunderstorms were located along a line
extending from 3 miles northwest of White Cloud to 3 miles southeast
of Silver Lake, moving east at 55 mph.

THESE ARE DESTRUCTIVE STORMS FOR the warned area.

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

SOURCE...Radar indicated.

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...
Northern Topeka, Holton, Hiawatha, Horton, Valley Falls, Oskaloosa,
Silver Lake, Perry, McLouth, Meriden, Hoyt, Ozawkie, Nortonville,
Winchester, Mayetta, Everest, Robinson, Whiting, Denison and
Netawaka.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3965 9534 3965 9556 3942 9557 3942 9518
      3904 9519 3905 9538 3907 9544 3905 9550
      3906 9591 4000 9558 4000 9534
TIME...MOT...LOC 2248Z 271DEG 48KT 4003 9533 3907 9581 

THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...80 MPH

$$

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, 3:57 PM CST	Tornado Warning	TOP	Jackson, Pottawatomie	10 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, 4:35 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

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.