Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 41, NWS Topeka, KS

May 27, 2021Marshall County, Pottawatomie County, Riley County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at May 27, 2021, 2:54 AM CDT for Marshall County, Pottawatomie County, Riley County, Kansas. It was in force for 51 min. 1 report 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: May 27, 2021, 2:54 AM CDT (07:54 UTC)
Expired: May 27, 2021, 3:45 AM CDT
In force: 51 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Marshall County, KS, Pottawatomie County, KS, Riley County, KS

The radar

The Topeka radar (KTWX), 67 km from the middle of the area, began a volume at 07:55 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
May 27, 3:00 AM CDT	TSTM WND DMG	Blue Rapids, KS	TREES DOWN... TIME ESTIMATED.

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
May 27, 1:05 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 7.9 hours before the alert went out and 98 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: 328 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 2025 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

096 
WUUS53 KTOP 270754
SVRTOP
KSC117-149-161-270845-
/O.NEW.KTOP.SV.W.0041.210527T0754Z-210527T0845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
254 AM CDT Thu May 27 2021

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  North central Riley County in northeastern Kansas...
  Northwestern Pottawatomie County in northeastern Kansas...
  Southern Marshall County in northeastern Kansas...

* Until 345 AM CDT.

* At 254 AM CDT, severe thunderstorms were located along a line
  extending from near Blue Rapids to 9 miles northwest of Olsburg to
  3 miles northwest of Randolph, moving east at 30 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.

* Severe thunderstorms will be near...
  Blue Rapids around 300 AM CDT.

Other locations in the path of these severe thunderstorms include
Frankfort and Blaine.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3952 9632 3942 9642 3947 9682 3954 9679
      3971 9674 3972 9629
TIME...MOT...LOC 0754Z 273DEG 24KT 3966 9668 3955 9671 3946 9681 

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

BD

3 follow-up statements

063 
WWUS53 KTOP 270808
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
308 AM CDT Thu May 27 2021

KSC149-161-270818-
/O.CAN.KTOP.SV.W.0041.000000T0000Z-210527T0845Z/
Riley-Pottawatomie-
308 AM CDT Thu May 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL RILEY AND
NORTHWESTERN POTTAWATOMIE COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 700 AM CDT for
northeastern Kansas.

LAT...LON 3957 9631 3957 9669 3971 9668 3972 9629
TIME...MOT...LOC 0808Z 255DEG 34KT 3960 9658 

$$

KSC117-270845-
/O.CON.KTOP.SV.W.0041.000000T0000Z-210527T0845Z/
Marshall-
308 AM CDT Thu May 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM CDT
FOR SOUTHERN MARSHALL COUNTY...

At 308 AM CDT, a severe thunderstorm was located 6 miles southeast of
Blue Rapids, moving east at 40 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...
  Frankfort.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3957 9631 3957 9669 3971 9668 3972 9629
TIME...MOT...LOC 0808Z 255DEG 34KT 3960 9658 

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

Baerg

557 
WWUS53 KTOP 270826
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
326 AM CDT Thu May 27 2021

KSC117-270845-
/O.CON.KTOP.SV.W.0041.000000T0000Z-210527T0845Z/
Marshall-
326 AM CDT Thu May 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM CDT
FOR SOUTHEASTERN MARSHALL COUNTY...

At 326 AM CDT, a severe thunderstorm was located 4 miles northwest of
Lillis, moving east 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...
Frankfort.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3957 9649 3971 9650 3972 9629 3957 9631
TIME...MOT...LOC 0826Z 254DEG 37KT 3964 9637 

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

Laflin

424 
WWUS53 KTOP 270841
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
341 AM CDT Thu May 27 2021

KSC117-270851-
/O.EXP.KTOP.SV.W.0041.000000T0000Z-210527T0845Z/
Marshall-
341 AM CDT Thu May 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MARSHALL COUNTY
WILL EXPIRE AT 345 AM CDT...
    
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning will be allowed to expire.  However gusty 
winds and heavy rain are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 700 AM CDT for
northeastern Kansas.

LAT...LON 3957 9649 3971 9650 3972 9629 3957 9631
TIME...MOT...LOC 0841Z 273DEG 24KT 3963 9625 

$$

Baerg

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 7:21 PM CDT	Special Weather Statement	TOP	Dickinson	39 min
May 26, 7:39 PM CDT	Special Weather Statement	TOP	Clay, Ottawa, Riley	66 min
May 27, 12:15 AM CDT	Severe Thunderstorm Warning	TOP	Cloud, Republic	30 min
May 27, 12:18 AM CDT	Tornado Warning	TOP	Dickinson, Morris	13 min
May 27, 12:37 AM CDT	Special Weather Statement	TOP	Morris	53 min
May 27, 12:42 AM CDT	Severe Thunderstorm Warning	TOP	Cloud, Republic	33 min
May 27, 12:44 AM CDT	Severe Thunderstorm Warning	TOP	Morris	46 min
May 27, 12:52 AM CDT	Areal Flood Advisory	TOP	Dickinson, Morris	4 hr
May 27, 12:58 AM CDT	Severe Thunderstorm Warning	TOP	Geary, Wabaunsee	47 min
May 27, 1:12 AM CDT	Severe Thunderstorm Warning	TOP	Cloud, Republic	33 min
May 27, 1:23 AM CDT	Special Weather Statement	TOP	Shawnee, Wabaunsee	67 min
May 27, 1:25 AM CDT	Special Weather Statement	TOP	Lyon	35 min
May 27, 1:37 AM CDT	Severe Thunderstorm Warning	TOP	Republic, Washington	23 min
May 27, 1:41 AM CDT	Severe Thunderstorm Warning	TOP	Clay, Cloud, Republic, Washington	49 min
May 27, 1:42 AM CDT	Special Weather Statement	TOP	Coffey	48 min
May 27, 1:45 AM CDT	Special Weather Statement	TOP	Osage	45 min
May 27, 2:01 AM CDT	Special Weather Statement	TOP	Jackson	59 min
May 27, 2:03 AM CDT	Special Weather Statement	TOP	Douglas, Jefferson	57 min
May 27, 2:08 AM CDT	Special Weather Statement	TOP	Cloud	37 min
May 27, 2:19 AM CDT	Severe Thunderstorm Warning	TOP	Clay, Marshall, Pottawatomie, Riley, Washington	41 min
May 27, 3:06 AM CDT	Special Weather Statement	TOP	Douglas	54 min
May 27, 3:46 AM CDT	Areal Flood Advisory	TOP	Marshall, Riley, Washington	4 hr
May 27, 4:22 AM CDT	Special Weather Statement	TOP	Morris, Wabaunsee	23 min
May 27, 4:29 AM CDT	Areal Flood Warning	TOP	Dickinson, Morris	6 hr
May 27, 4:43 AM CDT	Special Weather Statement	TOP	Wabaunsee	32 min
May 27, 5:01 AM CDT	Areal Flood Advisory	TOP	Geary, Morris	18 min
May 27, 5:11 AM CDT	Special Weather Statement	TOP	Shawnee	34 min
May 27, 5:18 AM CDT	Flash Flood Warning	TOP	Geary, Morris	4 hr
May 27, 5:31 AM CDT	Severe Thunderstorm Warning	TOP	Douglas, Osage, Shawnee	29 min
May 27, 5:41 AM CDT	Special Weather Statement	TOP	Lyon	34 min
May 27, 5:53 AM CDT	Severe Thunderstorm Warning	TOP	Douglas, Franklin, Osage	52 min
May 27, 6:14 AM CDT	Flash Flood Warning	TOP	Lyon, Morris, Wabaunsee	3 hr
May 27, 6:23 AM CDT	Special Weather Statement	TOP	Anderson	37 min
May 27, 6:48 AM CDT	Special Weather Statement	TOP	Franklin	27 min
May 27, 8:43 AM CDT	Areal Flood Warning	TOP	Lyon, Morris, Wabaunsee	8 hr
May 27, 8:59 AM CDT	Areal Flood Warning	TOP	Geary, Morris	14 hr
May 27, 10:04 AM CDT	Flash Flood Watch	TOP	Anderson, Coffey, Douglas, Franklin, Lyon, Osage	9 hr
May 27, 10:46 AM CDT	River Flood Warning	TOP	Wabaunsee	8 hr
May 27, 10:46 AM CDT	River Flood Warning	TOP	Shawnee	7 hr
May 27, 10:59 AM CDT	Areal Flood Warning	TOP	Morris	20 hr
May 27, 2:31 PM CDT	River Flood Warning	TOP	Lyon	26 hr
May 27, 2:31 PM CDT	River Flood Warning	TOP	Lyon	32 hr
May 27, 2:54 PM CDT	River Flood Warning	TOP	Lyon, Osage	16 hr

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.