Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 19, NWS Topeka, KS

May 8, 2021Marshall County, Washington County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at May 8, 2021, 8:38 PM CDT for Marshall County, Washington County, Kansas. It was in force for 52 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: May 8, 2021, 8:38 PM CDT (01:38 UTC)
Expired: May 8, 2021, 9:30 PM CDT
In force: 52 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Marshall County, KS, Washington County, KS

The radar

The Topeka radar (KTWX), 116 km from the middle of the area, began a volume at 01:42 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
May 8, 6:30 PM CDT	Tornado Watch	SPC	7 hr
May 8, 6:42 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.6 hours before the alert went out and 149 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: 377 J/kg
Mixed-layer CIN: -170 J/kg
Mixed-layer LCL: 1653 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 362 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.0

Open this sounding in Storm Lab

The text

As transmitted.

790 
WUUS53 KTOP 090138
SVRTOP
KSC117-201-090230-
/O.NEW.KTOP.SV.W.0019.210509T0138Z-210509T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
838 PM CDT Sat May 8 2021

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  Northeastern Washington County in north central Kansas...
  Northwestern Marshall County in northeastern Kansas...

* Until 930 PM CDT.

* At 838 PM CDT, severe thunderstorms were located along a line
  extending from 5 miles southwest of Hollenberg to 3 miles south of
  Morrowville, moving east 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...
  Marysville, Washington, Hanover, Waterville, Greenleaf, Barnes,
  Morrowville, Hollenberg and Bremen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 100 AM CDT for north central
Kansas.

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

LAT...LON 4000 9698 3995 9659 3961 9675 3978 9723
      4000 9712
TIME...MOT...LOC 0138Z 282DEG 28KT 3995 9708 3979 9718 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

Skow

3 follow-up statements

864 
WWUS53 KTOP 090200
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
900 PM CDT Sat May 8 2021

KSC117-201-090230-
/O.CON.KTOP.SV.W.0019.000000T0000Z-210509T0230Z/
Washington-Marshall-
900 PM CDT Sat May 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR NORTHEASTERN WASHINGTON AND NORTHWESTERN MARSHALL COUNTIES...

At 900 PM CDT, severe thunderstorms were located along a line
extending from 5 miles southwest of Odell to 5 miles south of
Hanover, moving east 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...
Marysville, Washington, Hanover, Waterville, Barnes, Hollenberg and
Bremen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 100 AM CDT for north central
Kansas.

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

LAT...LON 4000 9698 3995 9659 3962 9675 3981 9707
      4000 9707
TIME...MOT...LOC 0200Z 271DEG 31KT 3997 9686 3982 9688 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

Skow

570 
WWUS53 KTOP 090215
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
915 PM CDT Sat May 8 2021

KSC117-201-090230-
/O.CON.KTOP.SV.W.0019.000000T0000Z-210509T0230Z/
Washington-Marshall-
915 PM CDT Sat May 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR NORTHEASTERN WASHINGTON AND NORTHWESTERN MARSHALL COUNTIES...

At 915 PM CDT, severe thunderstorms were located along a line
extending from 4 miles northeast of Bremen to 4 miles west of
Marysville to near Barnes, moving east at 35 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Marysville, Hanover, Waterville, Barnes and Bremen. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 100 AM CDT for north central
Kansas.

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

&&

LAT...LON 3995 9659 3962 9675 3975 9697 3998 9685
TIME...MOT...LOC 0215Z 287DEG 29KT 3995 9672 3982 9672 3975 9688 

HAIL...0.88IN
WIND...60MPH
 
$$

Skow

586 
WWUS53 KTOP 090227
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
927 PM CDT Sat May 8 2021

KSC117-201-090237-
/O.EXP.KTOP.SV.W.0019.000000T0000Z-210509T0230Z/
Washington-Marshall-
927 PM CDT Sat May 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WASHINGTON AND
NORTHWESTERN MARSHALL COUNTIES WILL EXPIRE AT 930 PM CDT...
            
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 and heavy rain are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
northeastern Kansas.

LAT...LON 3995 9659 3962 9675 3975 9697 3998 9685
TIME...MOT...LOC 0227Z 282DEG 28KT 3993 9661 3980 9661 3973 9677 

$$

Skow

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 7:15 PM CDT	Special Weather Statement	TOP	Republic	15 min
May 8, 7:27 PM CDT	Severe Thunderstorm Warning	TOP	Republic	33 min
May 8, 7:52 PM CDT	Special Weather Statement	TOP	Marshall	23 min
May 8, 7:56 PM CDT	Severe Thunderstorm Warning	TOP	Republic, Washington	49 min
May 8, 8:03 PM CDT	Severe Thunderstorm Warning	TOP	Marshall	42 min
May 8, 8:48 PM CDT	Severe Thunderstorm Warning	TOP	Dickinson	57 min
May 8, 9:24 PM CDT	Severe Thunderstorm Warning	TOP	Geary, Morris, Riley	51 min
May 8, 9:27 PM CDT	Special Weather Statement	TOP	Marshall	33 min
May 8, 9:51 PM CDT	Severe Thunderstorm Warning	TOP	Geary, Pottawatomie, Riley	24 min
May 8, 10:03 PM CDT	Severe Thunderstorm Warning	TOP	Geary, Jackson, Morris, Pottawatomie, Riley, Shawnee and 1 more	42 min
May 8, 10:11 PM CDT	Tornado Warning	TOP	Pottawatomie, Riley, Wabaunsee	21 min
May 8, 10:43 PM CDT	Severe Thunderstorm Warning	TOP	Lyon, Osage, Shawnee, Wabaunsee	47 min
May 8, 11:00 PM CDT	Severe Thunderstorm Warning	TOP	Jackson, Jefferson, Shawnee	45 min
May 8, 11:00 PM CDT	Severe Thunderstorm Warning	TOP	Dickinson	45 min
May 8, 11:26 PM CDT	Special Weather Statement	TOP	Douglas	49 min
May 8, 11:42 PM CDT	Areal Flood Advisory	TOP	Shawnee, Wabaunsee	3 hr
May 9, 12:00 AM CDT	Areal Flood Advisory	TOP	Dickinson, Geary	3 hr
May 9, 12:00 AM CDT	Special Weather Statement	TOP	Dickinson	45 min
May 9, 12:15 AM CDT	Flash Flood Warning	TOP	Shawnee, Wabaunsee	4 hr
May 9, 12:31 AM CDT	Areal Flood Advisory	TOP	Douglas	3 hr
May 9, 12:58 AM CDT	Special Weather Statement	TOP	Morris	47 min
May 9, 2:28 AM CDT	Special Weather Statement	TOP	Coffey	32 min
May 9, 3:56 AM CDT	Special Weather Statement	TOP	Douglas, Jackson, Jefferson, Shawnee	49 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.