Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 173, NWS Topeka, KS

November 10, 2021Brown County, Nemaha County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Nov 10, 2021, 1:30 PM CST for Brown County, Nemaha County, Kansas. It was in force for 30 min. 2 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: Nov 10, 2021, 1:30 PM CST (19:30 UTC)
Expired: Nov 10, 2021, 2:00 PM CST
In force: 30 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Brown County, KS, Nemaha County, KS

The radar

The Topeka radar (KTWX), 103 km from the middle of the area, began a volume at 19:30 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
Nov 10, 1:39 PM CST	TSTM WND GST 60	Powhattan, KS	TIME ESTIMATED VIA RADAR.
Nov 10, 1:40 PM CST	TSTM WND GST 60	Horton, KS	TIME ESTIMATED VIA RADAR.

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

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 7.5 hours before the alert went out and 86 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: 24 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 634 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

998 
WUUS53 KTOP 101930
SVRTOP
KSC013-131-102000-
/O.NEW.KTOP.SV.W.0173.211110T1930Z-211110T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
130 PM CST Wed Nov 10 2021

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  East central Nemaha County in northeastern Kansas...
  Brown County in northeastern Kansas...

* Until 200 PM CST.

* At 130 PM CST, severe thunderstorms were located along a line
  extending from 3 miles west of Woodlawn to near Kickapoo
  Reservation to 3 miles northwest of Muscotah, moving northeast at
  45 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Hiawatha, Horton, Everest, Fairview, Robinson, Morrill, Reserve,
  Powhattan, Hamlin, Willis, Kickapoo Reservation and Woodlawn.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3965 9534 3965 9564 3967 9573 3975 9591
      4000 9564 4000 9534
TIME...MOT...LOC 1930Z 226DEG 47KT 3977 9593 3970 9570 3959 9555 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CP

2 follow-up statements

233 
WWUS53 KTOP 101949
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
149 PM CST Wed Nov 10 2021

KSC131-101958-
/O.CAN.KTOP.SV.W.0173.000000T0000Z-211110T2000Z/
Nemaha-
149 PM CST Wed Nov 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL NEMAHA COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4000 9534 3965 9534 3965 9565 3967 9573
      3970 9579 3986 9579 4000 9564
TIME...MOT...LOC 1948Z 226DEG 39KT 3991 9574 3984 9551 3973 9536 

$$

KSC013-102000-
/O.CON.KTOP.SV.W.0173.000000T0000Z-211110T2000Z/
Brown-
149 PM CST Wed Nov 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM CST
FOR BROWN COUNTY...

At 148 PM CST, severe thunderstorms were located along a line
extending from near Morrill to near Hiawatha to 4 miles west of
Denton, moving northeast at 45 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Hiawatha, Horton, Everest, Fairview, Robinson, Morrill, Reserve,
Powhattan, Hamlin, Willis and Kickapoo Reservation.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4000 9534 3965 9534 3965 9565 3967 9573
      3970 9579 3986 9579 4000 9564
TIME...MOT...LOC 1948Z 226DEG 39KT 3991 9574 3984 9551 3973 9536 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CP

712 
WWUS53 KTOP 101959
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
159 PM CST Wed Nov 10 2021

KSC013-102009-
/O.EXP.KTOP.SV.W.0173.000000T0000Z-211110T2000Z/
Brown-
159 PM CST Wed Nov 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR BROWN COUNTY WILL EXPIRE AT
200 PM CST...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with these thunderstorms.

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

LAT...LON 4000 9534 3965 9534 3965 9565 3967 9573
      3970 9579 3986 9579 4000 9564
TIME...MOT...LOC 1959Z 226DEG 47KT 4000 9562 3993 9539 3982 9524 

$$

CP

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 10, 11:45 AM CST	Special Weather Statement	TOP	Morris	15 min
Nov 10, 12:03 PM CST	Special Weather Statement	TOP	Morris	27 min
Nov 10, 12:22 PM CST	Special Weather Statement	TOP	Wabaunsee	23 min
Nov 10, 12:46 PM CST	Special Weather Statement	TOP	Jackson, Shawnee, Wabaunsee	29 min
Nov 10, 1:02 PM CST	Special Weather Statement	TOP	Brown	43 min
Nov 10, 1:17 PM CST	Severe Thunderstorm Warning	TOP	Brown, Jackson, Nemaha	28 min
Nov 10, 1:21 PM CST	Areal Flood Advisory	TOP	Jackson, Nemaha, Pottawatomie	114 min
Nov 10, 1:38 PM CST	Special Weather Statement	TOP	Morris	37 min
Nov 10, 2:26 PM CST	Special Weather Statement	TOP	Jackson	34 min
Nov 10, 4:00 PM CST	Special Weather Statement	TOP	Lyon	30 min
Nov 10, 4:09 PM CST	Areal Flood Advisory	TOP	Pottawatomie, Riley	3 hr
Nov 10, 4:20 PM CST	Special Weather Statement	TOP	Coffey	25 min
Nov 10, 4:27 PM CST	Special Weather Statement	TOP	Osage	33 min
Nov 10, 4:46 PM CST	Special Weather Statement	TOP	Coffey	29 min
Nov 10, 5:22 PM CST	Areal Flood Advisory	TOP	Brown, Jackson, Nemaha, Pottawatomie	2 hr
Nov 10, 5:39 PM CST	Special Weather Statement	TOP	Jefferson	36 min
Nov 10, 5:44 PM CST	Special Weather Statement	TOP	Osage, Shawnee	31 min
Nov 10, 5:54 PM CST	Special Weather Statement	TOP	Coffey	36 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.