Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 162, NWS Topeka, KS

September 2, 2021Ottawa County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Sep 2, 2021, 1:59 PM CDT for Ottawa County, Kansas. It was in force for 46 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
Sep 2, 2021, 1:59 PM CDT (18:59 UTC)
Expired
Sep 2, 2021, 2:45 PM CDT
In force
46 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Ottawa County, KS

The radar

The Topeka radar (KTWX), 134 km from the middle of the area, began a volume at 18:59 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 12:00Z, 7.0 hours before the alert went out and 185 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 12:00Z on 2021-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2021-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
925 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
228 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

216 
WUUS53 KTOP 021859
SVRTOP
KSC143-021945-
/O.NEW.KTOP.SV.W.0162.210902T1859Z-210902T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
159 PM CDT Thu Sep 2 2021

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  Southwestern Ottawa County in north central Kansas...

* Until 245 PM CDT.

* At 159 PM CDT, a severe thunderstorm was located 7 miles south of
  Beverly, moving northeast at 30 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...
  Minneapolis, Bennington, Tescott and Culver. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3906 9793 3916 9764 3896 9747 3896 9793
TIME...MOT...LOC 1859Z 248DEG 25KT 3891 9794 

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

$$

Reese
2 follow-up statements
618 
WWUS53 KTOP 021925
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
225 PM CDT Thu Sep 2 2021

KSC143-021945-
/O.CON.KTOP.SV.W.0162.000000T0000Z-210902T1945Z/
Ottawa-
225 PM CDT Thu Sep 2 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CDT
FOR SOUTHWESTERN OTTAWA COUNTY...

At 225 PM CDT, a severe thunderstorm was located over Culver, moving
northeast at 30 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...
Minneapolis, Bennington and Culver. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3905 9787 3916 9764 3896 9747 3896 9787
TIME...MOT...LOC 1925Z 246DEG 25KT 3897 9776 

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

$$

Reese
163 
WWUS53 KTOP 021940
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
240 PM CDT Thu Sep 2 2021

KSC143-021950-
/O.EXP.KTOP.SV.W.0162.000000T0000Z-210902T1945Z/
Ottawa-
240 PM CDT Thu Sep 2 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN OTTAWA COUNTY
WILL EXPIRE AT 245 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 are still possible with this thunderstorm.

LAT...LON 3905 9787 3916 9764 3896 9747 3896 9787
TIME...MOT...LOC 1940Z 248DEG 25KT 3900 9765 

$$

Reese

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 2, 5:49 PM CDTSpecial Weather StatementTOPOttawa26 min
Sep 2, 5:53 PM CDTSpecial Weather StatementTOPDickinson37 min
Sep 2, 6:06 PM CDTSevere Thunderstorm WarningTOPDickinson, Geary, Morris24 min
Sep 2, 6:30 PM CDTSevere Thunderstorm WarningTOPDickinson, Geary, Morris30 min
Sep 2, 6:58 PM CDTSpecial Weather StatementTOPMorris32 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.