Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 67, NWS Topeka, KS

June 24, 2021Marshall County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Jun 24, 2021, 5:34 PM CDT for Marshall County, Kansas. It was in force for 26 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: Jun 24, 2021, 5:34 PM CDT (22:34 UTC)
Expired: Jun 24, 2021, 6:00 PM CDT
In force: 26 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Marshall County, KS

The radar

The Topeka radar (KTWX), 108 km from the middle of the area, began a volume at 22:36 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
Jun 24, 3:44 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 10.6 hours before the alert went out and 135 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: 2072 J/kg
Mixed-layer CIN: -283 J/kg
Mixed-layer LCL: 688 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 342 m²/s²
0-3 km storm-relative helicity: 386 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

288 
WUUS53 KTOP 242234
SVRTOP
KSC117-242300-
/O.NEW.KTOP.SV.W.0067.210624T2234Z-210624T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
534 PM CDT Thu Jun 24 2021

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  Northwestern Marshall County in northeastern Kansas...

* Until 600 PM CDT.

* At 533 PM CDT, a severe thunderstorm was located near Bremen,
  moving northeast at 25 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Marysville, Oketo and Bremen. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM CDT for north central
and northeastern Kansas.

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

&&

LAT...LON 3988 9650 3983 9679 3985 9681 3992 9681
      4000 9670 4000 9661
TIME...MOT...LOC 2233Z 239DEG 20KT 3988 9675 

HAIL...1.25IN
WIND...60MPH
 
$$

Reese

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 4:43 AM CDT	Special Weather Statement	TOP	Brown	32 min
Jun 24, 5:48 AM CDT	Severe Thunderstorm Warning	TOP	Jackson, Jefferson, Shawnee	27 min
Jun 24, 6:42 AM CDT	Severe Thunderstorm Warning	TOP	Douglas, Franklin	18 min
Jun 24, 1:46 PM CDT	Flash Flood Watch	TOP	Anderson, Brown, Coffey, Douglas, Franklin, Jackson and 9 more	58 hr
Jun 24, 5:45 PM CDT	Tornado Warning	TOP	Marshall	30 min
Jun 24, 6:01 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Nemaha	44 min
Jun 24, 6:07 PM CDT	Tornado Warning	TOP	Marshall	23 min
Jun 24, 6:16 PM CDT	Tornado Warning	TOP	Marshall, Nemaha	29 min
Jun 24, 6:26 PM CDT	Tornado Warning	TOP	Marshall, Nemaha	34 min
Jun 24, 6:36 PM CDT	Severe Thunderstorm Warning	TOP	Brown, Nemaha	24 min
Jun 24, 6:46 PM CDT	Severe Thunderstorm Warning	TOP	Pottawatomie, Riley	29 min
Jun 24, 6:58 PM CDT	Areal Flood Advisory	TOP	Brown, Nemaha	61 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.