Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 80, NWS Topeka, KS

June 24, 2021Jefferson County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Jun 24, 2021, 9:56 PM CDT for Jefferson County, Kansas. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 24, 2021, 9:56 PM CDT (02:56 UTC)
Expired
Jun 24, 2021, 10:30 PM CDT
In force
34 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Jefferson County, KS

The radar

The Topeka radar (KTWX), 76 km from the middle of the area, began a volume at 02:54 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 24, 8:57 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 2.9 hours before the alert went out and 27 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.

310 
WUUS53 KTOP 250256
SVRTOP
KSC087-250330-
/O.NEW.KTOP.SV.W.0080.210625T0256Z-210625T0330Z/

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

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  Jefferson County in northeastern Kansas...

* Until 1030 PM CDT.

* At 956 PM CDT, severe thunderstorms were located along a line
  extending from near Nortonville to near Meriden, moving east at 35
  mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Valley Falls, Oskaloosa, Perry, McLouth, Meriden, Ozawkie,
  Nortonville, Winchester, Williamstown, Perry Lake and Grantville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3904 9519 3904 9528 3905 9539 3906 9540
      3907 9544 3906 9548 3907 9559 3942 9559
      3942 9518
TIME...MOT...LOC 0256Z 272DEG 32KT 3939 9532 3921 9557 

HAIL...0.75IN
WIND...60MPH
 
$$

Reese
2 follow-up statements
833 
WWUS53 KTOP 250310
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
1010 PM CDT Thu Jun 24 2021

KSC087-250330-
/O.CON.KTOP.SV.W.0080.000000T0000Z-210625T0330Z/
Jefferson-
1010 PM CDT Thu Jun 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR JEFFERSON COUNTY...

At 1010 PM CDT, severe thunderstorms were located along a line
extending from near Winchester to 3 miles southeast of Perry Lake,
moving east at 40 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Oskaloosa, Perry, McLouth, Ozawkie, Nortonville, Winchester,
Williamstown and Perry Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3904 9519 3904 9528 3905 9539 3906 9540
      3907 9544 3906 9548 3907 9553 3942 9541
      3942 9518
TIME...MOT...LOC 0310Z 268DEG 37KT 3935 9529 3914 9540 

HAIL...0.75IN
WIND...60MPH
 
$$

Reese
876 
WWUS53 KTOP 250326
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
1026 PM CDT Thu Jun 24 2021

KSC087-250335-
/O.EXP.KTOP.SV.W.0080.000000T0000Z-210625T0330Z/
Jefferson-
1026 PM CDT Thu Jun 24 2021

...THE SEVERE THUNDERSTORM WARNING FOR JEFFERSON COUNTY WILL EXPIRE
AT 1030 PM CDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 300 AM CDT for
northeastern and east central Kansas.

LAT...LON 3904 9519 3904 9528 3905 9539 3906 9540
      3907 9544 3906 9548 3907 9553 3942 9541
      3942 9518
TIME...MOT...LOC 0325Z 272DEG 32KT 3935 9529 3914 9540 

$$

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, 8:11 PM CDTSevere Thunderstorm WarningTOPBrown, Nemaha49 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, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.