Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 23, NWS Topeka, KS

May 8, 20217 counties in Kansas

NWS Topeka, KS issued this severe thunderstorm warning at May 8, 2021, 10:03 PM CDT for 7 counties in Kansas. It was in force for 42 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
May 8, 2021, 10:03 PM CDT (03:03 UTC)
Expired
May 8, 2021, 10:45 PM CDT
In force
42 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Geary County, KS, Jackson County, KS, Morris County, KS, Pottawatomie County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee County, KS

The radar

The Topeka radar (KTWX), 2 km from the middle of the area, began a volume at 03:05 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

TimeReportWhereRemark
May 8, 10:03 PM CDTTSTM WND DMG3 Ese Manhattan, KSSPOTTER PROVIDED PICTURES OF OUTBUILDING DESTROYED AND DAMAGE ACROSS PROPERTY. TIME ESTIMATED FROM RADAR.
May 8, 10:13 PM CDTTSTM WND GST 606 Sse Saint George, KS
May 8, 10:16 PM CDTTSTM WND GST 702 S Wamego, KS
May 8, 10:25 PM CDTTSTM WND DMG5 Nnw Mcfarland, KSSHERIFF REPORTED CONSTRUCTION EQUIPMENT BLOWN OVER.

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.

IssuedProductOfficeLasted
May 8, 6:30 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 3.1 hours before the alert went out and 53 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-pSkew-T log-p diagram, Topeka, KS at 00:00Z on 2021-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 377 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 00:00Z on 2021-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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.

391 
WUUS53 KTOP 090303
SVRTOP
KSC061-085-127-149-161-177-197-090345-
/O.NEW.KTOP.SV.W.0023.210509T0303Z-210509T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
1003 PM CDT Sat May 8 2021

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  Southeastern Geary County in east central Kansas...
  Southeastern Riley County in northeastern Kansas...
  Northeastern Morris County in east central Kansas...
  Northwestern Shawnee County in east central Kansas...
  Wabaunsee County in east central Kansas...
  Southern Pottawatomie County in northeastern Kansas...
  Southwestern Jackson County in northeastern Kansas...

* Until 1045 PM CDT.

* At 1003 PM CDT, severe thunderstorms were located along a line
  extending from 3 miles south of Tuttle Creek Lake to near Manhattan
  to 4 miles south of Dwight, moving east at 50 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...
  Northeastern Manhattan, Wamego, Rossville, Alma, Eskridge, St.
  Marys, St. George, Maple Hill, Alta Vista, McFarland, Paxico,
  Belvue, Emmett, Louisville, Delia, Willard, Keene and Volland.

This includes Interstate 70 between mile markers 314 and 347.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 100 AM CDT for northeastern
and east 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 3940 9601 3919 9590 3875 9598 3874 9620
      3874 9635 3873 9635 3872 9655 3915 9655
      3930 9659
TIME...MOT...LOC 0303Z 256DEG 42KT 3929 9664 3917 9653 3879 9657 

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

Skow
2 follow-up statements
463 
WWUS53 KTOP 090318
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
1018 PM CDT Sat May 8 2021

KSC061-085-127-149-161-177-197-090345-
/O.CON.KTOP.SV.W.0023.000000T0000Z-210509T0345Z/
Geary-Riley-Morris-Shawnee-Wabaunsee-Pottawatomie-Jackson-
1018 PM CDT Sat May 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR SOUTHEASTERN GEARY...SOUTHEASTERN RILEY...NORTHEASTERN MORRIS...
NORTHWESTERN SHAWNEE...WABAUNSEE...SOUTHEASTERN POTTAWATOMIE AND
SOUTHWESTERN JACKSON COUNTIES...

At 1017 PM CDT, severe thunderstorms were located along a line
extending from 4 miles south of Westmoreland to near Wamego to 6
miles south of Alta Vista, moving east at 55 mph.

HAZARD...70 mph wind gusts and quarter size hail. The strongest 
         winds are on the north side of the line with the hail 
         threat on the south side of the line.

SOURCE...Radar indicated and reported by trained spotters.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Wamego, Rossville, Alma, Eskridge, St. Marys, St. George, Maple Hill,
Alta Vista, McFarland, Paxico, Belvue, Emmett, Louisville, Delia,
Willard, Keene and Volland.

This includes Interstate 70 between mile markers 315 and 347.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 100 AM CDT for northeastern
and east 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 3940 9601 3919 9590 3875 9598 3874 9620
      3874 9635 3873 9635 3872 9655 3904 9655
      3914 9646 3933 9643
TIME...MOT...LOC 0317Z 255DEG 46KT 3934 9639 3922 9628 3878 9646 

HAIL...1.00IN
WIND...70MPH
 
$$

Skow
206 
WWUS53 KTOP 090328
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
1028 PM CDT Sat May 8 2021

KSC061-085-161-090338-
/O.CAN.KTOP.SV.W.0023.000000T0000Z-210509T0345Z/
Geary-Riley-Jackson-
1028 PM CDT Sat May 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GEARY...
SOUTHEASTERN RILEY AND SOUTHWESTERN JACKSON COUNTIES IS CANCELLED...

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

A Tornado Watch remains in effect until 100 AM CDT for northeastern
and east central Kansas.

LAT...LON 3875 9598 3874 9635 3873 9635 3873 9653
      3887 9652 3887 9650 3898 9650 3904 9638
      3923 9626 3921 9591 3918 9590
TIME...MOT...LOC 0328Z 264DEG 44KT 3937 9599 3875 9633 

$$

KSC127-149-177-197-090345-
/O.CON.KTOP.SV.W.0023.000000T0000Z-210509T0345Z/
Morris-Shawnee-Wabaunsee-Pottawatomie-
1028 PM CDT Sat May 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR NORTHEASTERN MORRIS...NORTHWESTERN SHAWNEE...WABAUNSEE AND
SOUTHEASTERN POTTAWATOMIE COUNTIES...

At 1028 PM CDT, severe thunderstorms were located along a line
extending from 5 miles northeast of Emmett to 8 miles northwest of
Bushong, moving east at 50 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Rossville, Alma, Eskridge, St. Marys, Maple Hill, Alta Vista,
McFarland, Paxico, Belvue, Willard, Keene and Volland.

This includes Interstate 70 between mile markers 324 and 347.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 100 AM CDT for northeastern
and east 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 3875 9598 3874 9635 3873 9635 3873 9653
      3887 9652 3887 9650 3898 9650 3904 9638
      3923 9626 3921 9591 3918 9590
TIME...MOT...LOC 0328Z 264DEG 44KT 3937 9599 3875 9633 

HAIL...1.00IN
WIND...70MPH
 
$$

Skow

The office that day

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

IssuedProductOfficeCountiesLasted
May 8, 7:15 PM CDTSpecial Weather StatementTOPRepublic15 min
May 8, 7:27 PM CDTSevere Thunderstorm WarningTOPRepublic33 min
May 8, 7:52 PM CDTSpecial Weather StatementTOPMarshall23 min
May 8, 7:56 PM CDTSevere Thunderstorm WarningTOPRepublic, Washington49 min
May 8, 8:03 PM CDTSevere Thunderstorm WarningTOPMarshall42 min
May 8, 8:38 PM CDTSevere Thunderstorm WarningTOPMarshall, Washington52 min
May 8, 8:48 PM CDTSevere Thunderstorm WarningTOPDickinson57 min
May 8, 9:24 PM CDTSevere Thunderstorm WarningTOPGeary, Morris, Riley51 min
May 8, 9:27 PM CDTSpecial Weather StatementTOPMarshall33 min
May 8, 9:51 PM CDTSevere Thunderstorm WarningTOPGeary, Pottawatomie, Riley24 min
May 8, 10:11 PM CDTTornado WarningTOPPottawatomie, Riley, Wabaunsee21 min
May 8, 10:43 PM CDTSevere Thunderstorm WarningTOPLyon, Osage, Shawnee, Wabaunsee47 min
May 8, 11:00 PM CDTSevere Thunderstorm WarningTOPJackson, Jefferson, Shawnee45 min
May 8, 11:00 PM CDTSevere Thunderstorm WarningTOPDickinson45 min
May 8, 11:26 PM CDTSpecial Weather StatementTOPDouglas49 min
May 8, 11:42 PM CDTAreal Flood AdvisoryTOPShawnee, Wabaunsee3 hr
May 9, 12:00 AM CDTAreal Flood AdvisoryTOPDickinson, Geary3 hr
May 9, 12:00 AM CDTSpecial Weather StatementTOPDickinson45 min
May 9, 12:15 AM CDTFlash Flood WarningTOPShawnee, Wabaunsee4 hr
May 9, 12:31 AM CDTAreal Flood AdvisoryTOPDouglas3 hr
May 9, 12:58 AM CDTSpecial Weather StatementTOPMorris47 min
May 9, 2:28 AM CDTSpecial Weather StatementTOPCoffey32 min
May 9, 3:56 AM CDTSpecial Weather StatementTOPDouglas, Jackson, Jefferson, Shawnee49 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2021Every 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.