Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 135, NWS Wichita, KS

August 20, 2021Chase County, McPherson County, Marion County, Kansas

NWS Wichita, KS issued this severe thunderstorm warning at Aug 20, 2021, 8:22 PM CDT for Chase County, McPherson County, Marion County, Kansas. It was in force for 68 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
Aug 20, 2021, 8:22 PM CDT (01:22 UTC)
Expired
Aug 20, 2021, 9:30 PM CDT
In force
68 min
Issued by
NWS Wichita, KS
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Chase County, KS, Marion County, KS, McPherson County, KS

The radar

The Wichita radar (KICT), 91 km from the middle of the area, began a volume at 01:26 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
Aug 20, 8:32 PM CDTTSTM WND DMG5 Wnw Inman, KSREPORT FROM MPING: TREES UPROOTED OR SNAPPED; ROOF BLOWN OFF.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.4 hours before the alert went out and 142 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 2021-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3676 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 2021-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 145 square meters per square second.193958Sfc1 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
3676 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
1017 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
145 m²/s²
0-3 km storm-relative helicity
242 m²/s²
Significant tornado parameter
3.1
Supercell composite
18.5

Open this sounding in Storm Lab

The text

As transmitted.

284 
WUUS53 KICT 210122
SVRICT
KSC017-113-115-210230-
/O.NEW.KICT.SV.W.0135.210821T0122Z-210821T0230Z/

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

The National Weather Service in Wichita has issued a

* Severe Thunderstorm Warning for...
  Southern McPherson County in central Kansas...
  Northwestern Chase County in east central Kansas...
  Marion County in central Kansas...

* Until 930 PM CDT.

* At 822 PM CDT, severe thunderstorms were located along a line
  extending from near Burdick to near Inman, moving east at 25 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...
  Mcpherson, Hillsboro, Marion, Moundridge, Inman, Peabody,
  Cottonwood Falls, Galva, Canton, Strong City, Florence, Goessel,
  Lincolnville, Ramona, Lehigh, Durham, Tampa, Lost Springs, Elmdale
  and Cedar Point.

This includes Interstate 135 between Mile Markers 44 and 64.
 
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 3852 9693 3852 9635 3817 9667 3818 9792
      3829 9792 3861 9719 3861 9693
TIME...MOT...LOC 0122Z 262DEG 24KT 3856 9692 3821 9772 

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

$$

KLEINSASSER
2 follow-up statements
201 
WWUS53 KICT 210141
SVSICT

Severe Weather Statement
National Weather Service Wichita KS
841 PM CDT Fri Aug 20 2021

KSC017-113-115-210230-
/O.CON.KICT.SV.W.0135.000000T0000Z-210821T0230Z/
McPherson KS-Chase KS-Marion KS-
841 PM CDT Fri Aug 20 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR SOUTHERN MCPHERSON...NORTHWESTERN CHASE AND MARION COUNTIES...

At 839 PM CDT, severe thunderstorms were located along a line
extending from 5 miles south of Burdick to near Moundridge, moving 
east at 25 mph. The strongest storms were located across southern 
McPherson county, and also over far northeast Marion county.

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...
Mcpherson, Hillsboro, Marion, Moundridge, Inman, Peabody, Cottonwood
Falls, Galva, Canton, Strong City, Florence, Goessel, Lincolnville,
Lehigh, Elmdale, Cedar Point, Hymer, Marion Lake, Tallgrass Prairie
and Pilsen.

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 3852 9693 3852 9635 3817 9667 3818 9792
      3829 9792 3854 9694
TIME...MOT...LOC 0139Z 268DEG 23KT 3849 9682 3822 9758 

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

$$

KLEINSASSER
886 
WWUS53 KICT 210225
SVSICT

Severe Weather Statement
National Weather Service Wichita KS
925 PM CDT Fri Aug 20 2021

KSC017-113-115-210234-
/O.EXP.KICT.SV.W.0135.000000T0000Z-210821T0230Z/
McPherson KS-Chase KS-Marion KS-
925 PM CDT Fri Aug 20 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MCPHERSON...
NORTHWESTERN CHASE AND MARION COUNTIES WILL EXPIRE AT 930 PM CDT...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.  However very small hail, gusty winds and 
heavy rain are still possible with these thunderstorms.

LAT...LON 3852 9693 3852 9635 3817 9667 3818 9792
      3829 9792 3854 9694
TIME...MOT...LOC 0224Z 262DEG 24KT 3853 9644 3826 9720 

$$

KLEINSASSER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 20, 7:03 PM CDTSpecial Weather StatementICTMcPherson, Rice27 min
Aug 20, 7:23 PM CDTSevere Thunderstorm WarningICTMcPherson, Marion, Rice, Saline67 min
Aug 20, 8:07 PM CDTSpecial Weather StatementICTReno38 min
Aug 20, 8:27 PM CDTSevere Thunderstorm WarningICTReno63 min
Aug 20, 9:20 PM CDTSevere Thunderstorm WarningICTHarvey, Reno, Sedgwick55 min
Aug 20, 9:55 PM CDTAreal Flood WarningICTHarvey, McPherson, Reno10 hr
Aug 20, 10:07 PM CDTSevere Thunderstorm WarningICTButler, Harvey, Marion, Reno, Sedgwick53 min
Aug 20, 10:10 PM CDTSpecial Weather StatementICTKingman35 min
Aug 20, 10:31 PM CDTSevere Thunderstorm WarningICTKingman44 min
Aug 20, 11:07 PM CDTSpecial Weather StatementICTSedgwick23 min
Aug 20, 11:46 PM CDTSpecial Weather StatementICTButler29 min
Aug 21, 12:20 AM CDTSpecial Weather StatementICTButler40 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.