Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 142, NWS Topeka, KS

August 20, 2021Dickinson County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Aug 20, 2021, 6:45 PM CDT for Dickinson County, Kansas. It was in force for 30 min. 4 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: Aug 20, 2021, 6:45 PM CDT (23:45 UTC)
Expired: Aug 20, 2021, 7:15 PM CDT
In force: 30 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Dickinson County, KS

The radar

The Topeka radar (KTWX), 92 km from the middle of the area, began a volume at 23:46 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
Aug 20, 6:54 PM CDT	TSTM WND DMG	2 N Abilene, KS	1 FEET IN DIAMETER TREES BLOWN DOWN, KDOT SIGNS BLOWN DOWN.
Aug 20, 7:04 PM CDT	TSTM WND GST 60	1 E Abilene, KS	6 INCH TREE LIMB DOWN.
Aug 20, 7:10 PM CDT	TSTM WND DMG	Abilene, KS	DK 214 REPORTED POWER OUTAGES, 2-3 INCH LIMBS DOWN.
Aug 20, 7:13 PM CDT	TSTM WND DMG	Abilene, KS	DELAYED REPORT FROM SOCIAL MEDIA OF 8-12 INCH TREE LIMB DOWN.

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
Aug 20, 4:39 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 11.8 hours before the alert went out and 144 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: 1273 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 702 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

As transmitted.

639 
WUUS53 KTOP 202345
SVRTOP
KSC041-210015-
/O.NEW.KTOP.SV.W.0142.210820T2345Z-210821T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
645 PM CDT Fri Aug 20 2021

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  Northern Dickinson County in central Kansas...

* Until 715 PM CDT.

* At 645 PM CDT, a severe thunderstorm was located near Solomon,
  moving northeast at 35 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Abilene, Chapman, Solomon, Moonlight and Talmage. 

This includes Interstate 70 between mile markers 267 and 288.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3893 9737 3900 9737 3913 9722 3913 9720
      3900 9697 3880 9737 3891 9737 3892 9738
      3893 9738
TIME...MOT...LOC 2345Z 232DEG 30KT 3888 9739 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Teefey

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 4:09 AM CDT	Special Weather Statement	TOP	Cloud	36 min
Aug 20, 4:16 AM CDT	Severe Thunderstorm Warning	TOP	Cloud, Republic	29 min
Aug 20, 4:24 AM CDT	Special Weather Statement	TOP	Republic	21 min
Aug 20, 4:47 AM CDT	Special Weather Statement	TOP	Washington	28 min
Aug 20, 5:03 AM CDT	Special Weather Statement	TOP	Clay	42 min
Aug 20, 5:13 AM CDT	Special Weather Statement	TOP	Washington	47 min
Aug 20, 5:45 AM CDT	Special Weather Statement	TOP	Riley	45 min
Aug 20, 5:55 AM CDT	Special Weather Statement	TOP	Washington	35 min
Aug 20, 5:00 PM CDT	Severe Thunderstorm Warning	TOP	Cloud	30 min
Aug 20, 5:06 PM CDT	Special Weather Statement	TOP	Ottawa	24 min
Aug 20, 5:20 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Ottawa	25 min
Aug 20, 5:27 PM CDT	Severe Thunderstorm Warning	TOP	Cloud	33 min
Aug 20, 5:35 PM CDT	Special Weather Statement	TOP	Cloud	25 min
Aug 20, 5:40 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Cloud, Dickinson, Ottawa	50 min
Aug 20, 5:56 PM CDT	Severe Thunderstorm Warning	TOP	Republic, Washington	34 min
Aug 20, 6:00 PM CDT	Special Weather Statement	TOP	Cloud	30 min
Aug 20, 6:22 PM CDT	Special Weather Statement	TOP	Clay, Washington	38 min
Aug 20, 6:25 PM CDT	Severe Thunderstorm Warning	TOP	Republic, Washington	35 min
Aug 20, 6:42 PM CDT	Special Weather Statement	TOP	Dickinson	18 min
Aug 20, 6:48 PM CDT	Special Weather Statement	TOP	Marshall	27 min
Aug 20, 6:52 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Washington	32 min
Aug 20, 6:55 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Pottawatomie, Riley	35 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.