Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 77, NWS Topeka, KS

June 24, 2021Brown County, Nemaha County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Jun 24, 2021, 8:11 PM CDT for Brown County, Nemaha County, Kansas. It was in force for 49 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
Jun 24, 2021, 8:11 PM CDT (01:11 UTC)
Expired
Jun 24, 2021, 9:00 PM CDT
In force
49 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Hail
0.88 in
Wind
60.0 mph

Counties Brown County, KS, Nemaha County, KS

The radar

The Topeka radar (KTWX), 102 km from the middle of the area, began a volume at 01:12 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
Jun 24, 8:30 PM CDTTSTM WND GST 703 Wsw Willis, KS

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
Jun 24, 3:44 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.2 hours before the alert went out and 92 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 2021-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2766 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 2021-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 225 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
2766 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
1424 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
225 m²/s²
0-3 km storm-relative helicity
404 m²/s²
Significant tornado parameter
2.2
Supercell composite
23.2

Open this sounding in Storm Lab

The text

As transmitted.

081 
WUUS53 KTOP 250111
SVRTOP
KSC013-131-250200-
/O.NEW.KTOP.SV.W.0077.210625T0111Z-210625T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
811 PM CDT Thu Jun 24 2021

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  Nemaha County in northeastern Kansas...
  Brown County in northeastern Kansas...

* Until 900 PM CDT.

* At 811 PM CDT, severe thunderstorms were located along a line
  extending from near Reserve to near Baileyville, moving southeast
  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...
  Hiawatha, Sabetha, Seneca, Centralia, Fairview, Robinson, Morrill,
  Bern, Reserve, Powhattan, Oneida, Hamlin, Willis, Baileyville,
  Kickapoo Reservation and Woodlawn.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM CDT for northeastern
Kansas.

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

&&

LAT...LON 3970 9534 3966 9624 3989 9624 4000 9591
      4000 9534
TIME...MOT...LOC 0111Z 296DEG 32KT 3996 9552 3983 9617 

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

Reese
2 follow-up statements
767 
WWUS53 KTOP 250139
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
839 PM CDT Thu Jun 24 2021

KSC013-131-250200-
/O.CON.KTOP.SV.W.0077.000000T0000Z-210625T0200Z/
Nemaha-Brown-
839 PM CDT Thu Jun 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR NORTHEASTERN NEMAHA AND BROWN COUNTIES...

At 839 PM CDT, severe thunderstorms were located along a line
extending from Highland to 4 miles southwest of Woodlawn, moving
southeast 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...
Hiawatha, Sabetha, Fairview, Robinson, Morrill, Reserve, Powhattan,
Oneida, Hamlin, Willis, Kickapoo Reservation and Woodlawn.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM CDT for northeastern
Kansas.

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

&&

LAT...LON 3970 9534 3967 9604 3991 9595 4000 9569
      4000 9534
TIME...MOT...LOC 0139Z 296DEG 32KT 3986 9526 3973 9591 

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

Reese
035 
WWUS53 KTOP 250157
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
857 PM CDT Thu Jun 24 2021

KSC013-131-250206-
/O.EXP.KTOP.SV.W.0077.000000T0000Z-210625T0200Z/
Nemaha-Brown-
857 PM CDT Thu Jun 24 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NEMAHA AND BROWN
COUNTIES WILL EXPIRE AT 900 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 are still possible with these thunderstorms.

Remember, a Severe Thunderstorm Warning still remains in effect for
far southern Brown County until 915 PM.

LAT...LON 3970 9534 3967 9604 3991 9595 4000 9569
      4000 9534
TIME...MOT...LOC 0156Z 296DEG 32KT 3980 9510 3967 9575 

$$

Reese

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 7:00 PM CDTSevere Thunderstorm WarningTOPBrown, Nemaha45 min
Jun 24, 7:07 PM CDTSevere Thunderstorm WarningTOPPottawatomie23 min
Jun 24, 7:17 PM CDTSevere Thunderstorm WarningTOPMarshall, Nemaha43 min
Jun 24, 7:25 PM CDTSevere Thunderstorm WarningTOPBrown35 min
Jun 24, 7:27 PM CDTSpecial Weather StatementTOPPottawatomie33 min
Jun 24, 7:30 PM CDTSpecial Weather StatementTOPRiley30 min
Jun 24, 7:47 PM CDTSpecial Weather StatementTOPPottawatomie, Riley28 min
Jun 24, 7:49 PM CDTSevere Thunderstorm WarningTOPNemaha26 min
Jun 24, 7:55 PM CDTFlash Flood WarningTOPBrown, Nemaha7 hr
Jun 24, 8:07 PM CDTSevere Thunderstorm WarningTOPPottawatomie, Riley23 min
Jun 24, 8:26 PM CDTSpecial Weather StatementTOPPottawatomie34 min
Jun 24, 8:41 PM CDTSevere Thunderstorm WarningTOPBrown, Jackson, Nemaha34 min
Jun 24, 8:43 PM CDTSevere Thunderstorm WarningTOPGeary, Pottawatomie, Riley, Wabaunsee32 min
Jun 24, 9:10 PM CDTSpecial Weather StatementTOPJackson35 min
Jun 24, 9:39 PM CDTSpecial Weather StatementTOPJefferson36 min
Jun 24, 9:56 PM CDTSevere Thunderstorm WarningTOPJefferson34 min
Jun 24, 10:41 PM CDTSpecial Weather StatementTOPNemaha34 min
Jun 24, 10:48 PM CDTSpecial Weather StatementTOPBrown27 min
Jun 24, 11:31 PM CDTSpecial Weather StatementTOPBrown29 min
Jun 24, 11:59 PM CDTAreal Flood WarningTOPBrown6 hr
Jun 25, 12:14 AM CDTSevere Thunderstorm WarningTOPBrown, Nemaha31 min
Jun 25, 12:21 AM CDTSpecial Weather StatementTOPDickinson24 min
Jun 25, 12:46 AM CDTFlash Flood WarningTOPBrown5 hr
Jun 25, 12:56 AM CDTSpecial Weather StatementTOPBrown34 min
Jun 25, 1:01 AM CDTSpecial Weather StatementTOPOttawa29 min
Jun 25, 1:30 AM CDTSpecial Weather StatementTOPOttawa30 min
Jun 25, 1:59 AM CDTSpecial Weather StatementTOPDickinson46 min
Jun 25, 2:23 AM CDTSpecial Weather StatementTOPGeary22 min
Jun 25, 2:35 AM CDTFlash Flood Warning Considerable damage threatTOPBrown, Nemaha5 hr
Jun 25, 2:39 AM CDTSpecial Weather StatementTOPPottawatomie, Riley, Wabaunsee51 min
Jun 25, 3:45 AM CDTSevere Thunderstorm WarningTOPDouglas, Jackson, Jefferson, Shawnee30 min
Jun 25, 4:11 AM CDTSevere Thunderstorm WarningTOPDouglas, Jefferson34 min
Jun 25, 7:52 AM CDTAreal Flood WarningTOPBrown, Nemaha12 hr
Jun 25, 2:27 PM CDTSpecial Weather StatementTOPMorris33 min
Jun 25, 2:43 PM CDTSevere Thunderstorm WarningTOPLyon, Morris32 min
Jun 25, 2:49 PM CDTSevere Thunderstorm WarningTOPCoffey, Lyon, Osage21 min
Jun 25, 2:57 PM CDTSevere Thunderstorm WarningTOPLyon, Morris, Wabaunsee11 min
Jun 25, 3:11 PM CDTSpecial Weather StatementTOPOsage34 min
Jun 25, 3:14 PM CDTSpecial Weather StatementTOPWabaunsee31 min
Jun 25, 3:19 PM CDTSpecial Weather StatementTOPDouglas26 min
Jun 25, 3:21 PM CDTSpecial Weather StatementTOPOsage24 min
Jun 25, 3:25 PM CDTSpecial Weather StatementTOPShawnee35 min
Jun 25, 3:33 PM CDTSpecial Weather StatementTOPLyon27 min
Jun 25, 3:40 PM CDTSevere Thunderstorm WarningTOPCoffey, Franklin, Osage50 min
Jun 25, 3:41 PM CDTSevere Thunderstorm WarningTOPJefferson, Shawnee34 min
Jun 25, 3:49 PM CDTFlash Flood WarningTOPCoffey, Franklin, Osage7 hr
Jun 25, 3:52 PM CDTAreal Flood AdvisoryTOPCoffey, Lyon69 min
Jun 25, 3:54 PM CDTSevere Thunderstorm WarningTOPAnderson, Coffey, Franklin36 min
Jun 25, 3:57 PM CDTSevere Thunderstorm WarningTOPDouglas, Jackson, Jefferson, Shawnee48 min
Jun 25, 4:04 PM CDTAreal Flood AdvisoryTOPDouglas, Jefferson, Shawnee115 min
Jun 25, 4:04 PM CDTSevere Thunderstorm WarningTOPJackson, Pottawatomie, Shawnee, Wabaunsee41 min
Jun 25, 4:09 PM CDTSpecial Weather StatementTOPLyon36 min
Jun 25, 4:12 PM CDTSevere Thunderstorm WarningTOPAnderson, Franklin48 min
Jun 25, 4:27 PM CDTSpecial Weather StatementTOPMorris33 min
Jun 25, 4:34 PM CDTFlash Flood WarningTOPAnderson, Coffey, Franklin6 hr
Jun 25, 4:36 PM CDTSevere Thunderstorm WarningTOPDickinson24 min
Jun 25, 4:39 PM CDTAreal Flood AdvisoryTOPJackson, Jefferson, Shawnee81 min
Jun 25, 4:39 PM CDTSevere Thunderstorm WarningTOPJackson, Jefferson, Shawnee36 min
Jun 25, 4:47 PM CDTSevere Thunderstorm WarningTOPDickinson, Geary, Riley43 min
Jun 25, 5:00 PM CDTFlash Flood WarningTOPCoffey, Lyon6 hr
Jun 25, 5:15 PM CDTSpecial Weather StatementTOPAnderson30 min
Jun 25, 5:20 PM CDTSevere Thunderstorm WarningTOPGeary, Pottawatomie, Riley, Wabaunsee40 min
Jun 25, 5:53 PM CDTSpecial Weather StatementTOPAnderson, Franklin52 min
Jun 25, 5:58 PM CDTSevere Thunderstorm WarningTOPAnderson, Franklin32 min
Jun 25, 6:16 PM CDTSpecial Weather StatementTOPCoffey29 min
Jun 25, 6:47 PM CDTFlash Flood WarningTOPAnderson, Coffey4 hr
Jun 25, 6:47 PM CDTSpecial Weather StatementTOPAnderson43 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.