Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 22, NWS Topeka, KS

May 8, 2021Geary County, Pottawatomie County, Riley County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at May 8, 2021, 9:51 PM CDT for Geary County, Pottawatomie County, Riley County, Kansas. It was in force for 24 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
May 8, 2021, 9:51 PM CDT (02:51 UTC)
Expired
May 8, 2021, 10:15 PM CDT
In force
24 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Geary County, KS, Pottawatomie County, KS, Riley County, KS

The radar

The Topeka radar (KTWX), 54 km from the middle of the area, began a volume at 02:53 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
May 8, 6:30 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 2.9 hours before the alert went out and 102 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 00:00Z on 2021-05-09The 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.

692 
WUUS53 KTOP 090251
SVRTOP
KSC061-149-161-090315-
/O.NEW.KTOP.SV.W.0022.210509T0251Z-210509T0315Z/

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

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  Northwestern Geary County in east central Kansas...
  Southwestern Riley County in northeastern Kansas...
  Southwestern Pottawatomie County in northeastern Kansas...

* Until 1015 PM CDT.

* At 951 PM CDT, a severe thunderstorm was located 4 miles east of
  Milford, moving northeast at 40 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Emergency management.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Riley around 955 PM CDT.
  Keats around 1000 PM CDT.
  Tuttle Creek Lake around 1010 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

&&

LAT...LON 3911 9688 3924 9694 3945 9666 3923 9655
TIME...MOT...LOC 0251Z 242DEG 37KT 3918 9683 

HAIL...1.25IN
WIND...60MPH
 
$$
1 follow-up statement
142 
WWUS53 KTOP 090309
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
1009 PM CDT Sat May 8 2021

KSC061-149-161-090319-
/O.EXP.KTOP.SV.W.0022.000000T0000Z-210509T0315Z/
Geary-Riley-Pottawatomie-
1009 PM CDT Sat May 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN GEARY...
SOUTHWESTERN RILEY AND SOUTHWESTERN POTTAWATOMIE COUNTIES WILL EXPIRE
AT 1015 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

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

LAT...LON 3911 9688 3924 9694 3945 9666 3923 9655
TIME...MOT...LOC 0309Z 242DEG 37KT 3926 9664 

$$

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, 10:03 PM CDTSevere Thunderstorm WarningTOPGeary, Jackson, Morris, Pottawatomie, Riley, Shawnee and 1 more42 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.