Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 127, NWS Topeka, KS

August 12, 2021Cloud County, Republic County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Aug 12, 2021, 7:19 PM CDT for Cloud County, Republic County, Kansas. It was in force for 26 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
Aug 12, 2021, 7:19 PM CDT (00:19 UTC)
Expired
Aug 12, 2021, 7:45 PM CDT
In force
26 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Cloud County, KS, Republic County, KS

The radar

The Grand Island radar (KUEX), 97 km from the middle of the area, began a volume at 00:21 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 nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 0.3 hours before the alert went out and 192 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 2021-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4214 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 2021-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 square meters per square second.1939Sfc1 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
4214 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
1420 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
179 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.4

Open this sounding in Storm Lab

The text

As transmitted.

668 
WUUS53 KTOP 130019
SVRTOP
KSC029-157-130045-
/O.NEW.KTOP.SV.W.0127.210813T0019Z-210813T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
719 PM CDT Thu Aug 12 2021

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  Southwestern Republic County in north central Kansas...
  Northern Cloud County in north central Kansas...

* Until 745 PM CDT.

* At 719 PM CDT, a severe thunderstorm was located 4 miles northwest
  of Concordia, moving northeast at 10 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Concordia, Jamestown and Norway. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3977 9777 3972 9757 3954 9747 3947 9775
      3962 9792
TIME...MOT...LOC 0019Z 225DEG 11KT 3961 9773 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$
2 follow-up statements
102 
WWUS53 KTOP 130029
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
729 PM CDT Thu Aug 12 2021

KSC029-157-130045-
/O.CON.KTOP.SV.W.0127.000000T0000Z-210813T0045Z/
Republic-Cloud-
729 PM CDT Thu Aug 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR SOUTHWESTERN REPUBLIC AND NORTHWESTERN CLOUD COUNTIES...

At 729 PM CDT, a severe thunderstorm was located 4 miles northwest of
Concordia, moving northeast at 10 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...
Concordia, Jamestown and Norway. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3975 9779 3970 9758 3954 9755 3950 9778
      3962 9792
TIME...MOT...LOC 0029Z 221DEG 9KT 3962 9773 

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

$$
801 
WWUS53 KTOP 130039
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
739 PM CDT Thu Aug 12 2021

KSC029-157-130048-
/O.EXP.KTOP.SV.W.0127.000000T0000Z-210813T0045Z/
Republic-Cloud-
739 PM CDT Thu Aug 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN REPUBLIC AND
NORTHWESTERN CLOUD COUNTIES WILL EXPIRE AT 745 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3975 9779 3970 9758 3954 9755 3950 9778
      3962 9792
TIME...MOT...LOC 0038Z 225DEG 11KT 3964 9771 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 7:31 PM CDTSpecial Weather StatementTOPDouglas29 min
Aug 12, 8:58 PM CDTSpecial Weather StatementTOPMorris32 min
Aug 12, 9:06 PM CDTSevere Thunderstorm WarningTOPMorris24 min
Aug 12, 9:29 PM CDTSpecial Weather StatementTOPFranklin31 min
Aug 12, 9:43 PM CDTSpecial Weather StatementTOPDickinson47 min
Aug 12, 9:46 PM CDTSevere Thunderstorm WarningTOPDouglas, Franklin29 min
Aug 12, 10:02 PM CDTSpecial Weather StatementTOPDickinson43 min
Aug 12, 10:18 PM CDTSpecial Weather StatementTOPFranklin42 min
Aug 12, 10:38 PM CDTSevere Thunderstorm WarningTOPDouglas, Franklin37 min
Aug 12, 10:49 PM CDTAreal Flood AdvisoryTOPDouglas, Franklin5 hr
Aug 12, 11:06 PM CDTSevere Thunderstorm WarningTOPDouglas, Franklin24 min
Aug 12, 11:55 PM CDTFlash Flood WarningTOPDouglas, Franklin, Shawnee3 min
Aug 13, 12:01 AM CDTFlash Flood WarningTOPDouglas, Franklin6 hr
Aug 13, 12:11 AM CDTAreal Flood AdvisoryTOPDouglas, Jefferson3 hr
Aug 13, 12:22 AM CDTSevere Thunderstorm WarningTOPBrown, Jackson, Nemaha23 min
Aug 13, 12:43 AM CDTSevere Thunderstorm WarningTOPBrown17 min
Aug 13, 12:55 AM CDTSpecial Weather StatementTOPBrown35 min
Aug 13, 1:19 AM CDTSpecial Weather StatementTOPMarshall41 min
Aug 13, 1:38 AM CDTSpecial Weather StatementTOPDouglas, Jefferson52 min
Aug 13, 1:49 AM CDTAreal Flood AdvisoryTOPBrown, Jackson, Marshall, Nemaha5 hr
Aug 13, 1:56 AM CDTSpecial Weather StatementTOPLyon49 min
Aug 13, 2:07 AM CDTSevere Thunderstorm WarningTOPCoffey, Lyon38 min
Aug 13, 2:10 AM CDTFlash Flood WarningTOPLyon, Osage4 hr
Aug 13, 2:18 AM CDTFlash Flood WarningTOPDouglas, Franklin, Jefferson4 hr
Aug 13, 2:44 AM CDTSpecial Weather StatementTOPWabaunsee46 min
Aug 13, 2:51 AM CDTFlash Flood WarningTOPLyon4 hr
Aug 13, 3:15 AM CDTAreal Flood AdvisoryTOPDouglas, Jefferson, Osage, Shawnee3 hr
Aug 13, 3:51 AM CDTAreal Flood AdvisoryTOPRepublic, Washington3 hr
Aug 13, 6:09 AM CDTAreal Flood AdvisoryTOPLyon, Osage105 min
Aug 13, 6:27 AM CDTAreal Flood AdvisoryTOPDouglas, Franklin2 hr
Aug 13, 6:30 AM CDTAreal Flood AdvisoryTOPDouglas, Franklin, Jefferson2 hr
Aug 13, 6:52 AM CDTAreal Flood AdvisoryTOPLyon53 min
Aug 13, 9:08 AM CDTRiver Flood WarningTOPWashington4 hr

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.