Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 105, NWS Topeka, KS

July 10, 20217 counties in Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Jul 10, 2021, 12:57 AM CDT for 7 counties in Kansas. It was in force for 48 min. 3 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
Jul 10, 2021, 12:57 AM CDT (05:57 UTC)
Expired
Jul 10, 2021, 1:45 AM CDT
In force
48 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Hail
0.75 in
Wind
70.0 mph

Counties Clay County, KS, Dickinson County, KS, Geary County, KS, Marshall County, KS, Nemaha County, KS, Pottawatomie County, KS, Riley County, KS

The radar

The Topeka radar (KTWX), 35 km from the middle of the area, began a volume at 05:58 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
Jul 10, 1:22 AM CDTTSTM WND GST 644 E Riley, KS
Jul 10, 1:34 AM CDTTSTM WND GST 582 Nw Wamego, KS
Jul 10, 1:35 AM CDTTSTM WND DMGWamego, KSMULTIPLE TREE BRANCHES SNAPPED IN THE CITY. IN ADDITION, A 40 FOOT TALL TREE WAS SNAPPED AND BLOCKING THE ROADWAY. HEALTH OF THE TREE WAS UNKNOWN.

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
Jul 9, 9:58 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 6.0 hours before the alert went out and 74 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 2021-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2790 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 00:00Z on 2021-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 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
2790 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
1645 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
132 m²/s²
Significant tornado parameter
0.4
Supercell composite
6.9

Open this sounding in Storm Lab

The text

As transmitted.

240 
WUUS53 KTOP 100557
SVRTOP
KSC027-041-061-117-131-149-161-100645-
/O.NEW.KTOP.SV.W.0105.210710T0557Z-210710T0645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
1257 AM CDT Sat Jul 10 2021

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  Northeastern Dickinson County in central Kansas...
  Geary County in east central Kansas...
  Southern Riley County in northeastern Kansas...
  Pottawatomie County in northeastern Kansas...
  Southwestern Nemaha County in northeastern Kansas...
  Southern Clay County in north central Kansas...
  Southeastern Marshall County in northeastern Kansas...

* Until 145 AM CDT.

* At 1257 AM CDT, severe thunderstorms were located along a line
  extending from 4 miles southwest of Axtell to 3 miles northeast of
  Olsburg to 3 miles south of Idana, moving southeast at 50 mph.

  HAZARD...70 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Manhattan, Junction City, Wamego, Westmoreland, Blaine, St. Marys,
  Ogden, Grandview Plaza, Chapman, Wakefield, Riley, Onaga, St.
  George, Milford, Centralia, Axtell, Belvue, Emmett, Louisville and
  Havensville.

This includes Interstate 70 between mile markers 285 and 321.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3996 9626 3959 9602 3914 9604 3916 9609
      3916 9606 3920 9611 3919 9618 3921 9624
      3918 9627 3920 9631 3915 9634 3917 9639
      3904 9639 3904 9650 3900 9650 3889 9697
      3934 9737 3935 9737 3930 9684 3958 9628
TIME...MOT...LOC 0557Z 316DEG 45KT 3982 9632 3948 9659 3931 9724 

HAIL...<.75IN
WIND...70MPH
 
$$

CP/BB
1 follow-up statement
979 
WWUS53 KTOP 100610
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
110 AM CDT Sat Jul 10 2021

KSC027-041-061-117-131-149-161-100645-
/O.CON.KTOP.SV.W.0105.000000T0000Z-210710T0645Z/
Dickinson-Geary-Riley-Pottawatomie-Nemaha-Clay-Marshall-
110 AM CDT Sat Jul 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM CDT
FOR NORTHEASTERN DICKINSON...GEARY...SOUTHERN RILEY...POTTAWATOMIE...
SOUTHWESTERN NEMAHA...SOUTHERN CLAY AND SOUTHEASTERN MARSHALL
COUNTIES...

At 109 AM CDT, severe thunderstorms were located along a line
extending from 4 miles southwest of Centralia to 4 miles south of
Westmoreland to near Riley to 3 miles north of Oak Hill, moving
southeast at 50 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Manhattan, Junction City, Wamego, Westmoreland, Blaine, St. Marys,
Ogden, Grandview Plaza, Chapman, Wakefield, Riley, Onaga, St. George,
Milford, Centralia, Axtell, Belvue, Emmett, Louisville and
Havensville.

This includes Interstate 70 between mile markers 285 and 321.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3996 9626 3959 9602 3914 9604 3916 9609
      3916 9606 3920 9611 3919 9618 3921 9624
      3918 9627 3920 9631 3915 9634 3917 9639
      3904 9639 3904 9650 3900 9650 3889 9697
      3934 9737 3935 9737 3930 9684 3958 9628
TIME...MOT...LOC 0609Z 319DEG 44KT 3967 9616 3933 9643 3927 9685 3930
9733

HAIL...<.75IN
WIND...70MPH
 
$$

CP/BB

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 11:19 PM CDTSevere Thunderstorm WarningTOPRepublic56 min
Jul 9, 11:54 PM CDTSevere Thunderstorm WarningTOPWashington66 min
Jul 10, 12:00 AM CDTSevere Thunderstorm WarningTOPCloud60 min
Jul 10, 12:13 AM CDTSevere Thunderstorm WarningTOPRepublic32 min
Jul 10, 12:34 AM CDTSevere Thunderstorm WarningTOPClay, Marshall, Pottawatomie, Riley, Washington56 min
Jul 10, 1:19 AM CDTSevere Thunderstorm WarningTOPGeary, Jackson, Morris, Shawnee, Wabaunsee56 min
Jul 10, 1:45 AM CDTSevere Thunderstorm WarningTOPBrown30 min
Jul 10, 1:49 AM CDTSpecial Weather StatementTOPRiley26 min
Jul 10, 1:58 AM CDTSevere Thunderstorm WarningTOPCoffey, Douglas, Franklin, Jefferson, Lyon, Morris and 3 more47 min
Jul 10, 2:44 AM CDTSpecial Weather StatementTOPRiley31 min
Jul 10, 3:08 AM CDTSpecial Weather StatementTOPWabaunsee37 min
Jul 10, 3:27 AM CDTSpecial Weather StatementTOPLyon33 min
Jul 10, 4:02 AM CDTSpecial Weather StatementTOPLyon, Osage28 min
Jul 10, 4:13 AM CDTSpecial Weather StatementTOPCloud32 min
Jul 10, 4:25 AM CDTSevere Thunderstorm WarningTOPCloud, Republic35 min
Jul 10, 4:36 AM CDTSpecial Weather StatementTOPAnderson, Franklin54 min
Jul 10, 4:40 AM CDTSpecial Weather StatementTOPClay35 min
Jul 10, 5:05 AM CDTSpecial Weather StatementTOPRiley40 min
Jul 10, 5:58 AM CDTSpecial Weather StatementTOPWabaunsee47 min
Jul 10, 3:34 PM CDTSpecial Weather StatementTOPRepublic56 min
Jul 10, 4:11 PM CDTSpecial Weather StatementTOPWashington34 min
Jul 10, 4:45 PM CDTSpecial Weather StatementTOPWashington30 min
Jul 10, 4:53 PM CDTSpecial Weather StatementTOPBrown, Nemaha67 min
Jul 10, 5:05 PM CDTSevere Thunderstorm WarningTOPMarshall, Pottawatomie, Washington25 min
Jul 10, 5:26 PM CDTSpecial Weather StatementTOPPottawatomie34 min
Jul 10, 5:47 PM CDTSpecial Weather StatementTOPPottawatomie28 min
Jul 10, 5:54 PM CDTSpecial Weather StatementTOPDickinson, Geary36 min
Jul 10, 6:16 PM CDTSpecial Weather StatementTOPJefferson29 min
Jul 10, 6:47 PM CDTSpecial Weather StatementTOPDouglas28 min
Jul 10, 6:52 PM CDTSpecial Weather StatementTOPDouglas, Osage, Shawnee53 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.