Alert archive / Kansas / Tornado Warnings in 2015

Tornado Warning 31, NWS Topeka, KS

September 7, 2015Marshall County, Kansas

NWS Topeka, KS issued this tornado warning at Sep 7, 2015, 4:16 PM CDT for Marshall County, Kansas. It was in force for 29 min. 2 reports 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
Sep 7, 2015, 4:16 PM CDT (21:16 UTC)
Expired
Sep 7, 2015, 4:45 PM CDT
In force
29 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Tornado
Radar indicated
Hail
2.0 in

County Marshall County, KS

The radar

The Topeka radar (KTWX), 109 km from the middle of the area, began a volume at 21:16 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
Sep 7, 4:18 PM CDTTORNADO3 N Bremen, KSTRAINED SPOTTER OBSERVED DEBRIS CLOUD.
Sep 7, 4:38 PM CDTTSTM WND DMGOketo, KSREPORTED LARGE TREES DOWN AND POWER OUTAGES.

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
Sep 7, 3:37 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Topeka, KS (KFOE), launched 12:00Z, 9.3 hours before the alert went out and 133 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 2015-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 898 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 12:00Z on 2015-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 291 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
898 J/kg
Mixed-layer CIN
-182 J/kg
Mixed-layer LCL
1268 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
291 m²/s²
0-3 km storm-relative helicity
328 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

568 
WFUS53 KTOP 072116
TORTOP
KSC117-072145-
/O.NEW.KTOP.TO.W.0031.150907T2116Z-150907T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
416 PM CDT MON SEP 7 2015

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN MARSHALL COUNTY IN NORTHEASTERN KANSAS...

* UNTIL 445 PM CDT
    
* AT 416 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR ODELL...MOVING EAST AT 30 MPH.

  HAZARD...TORNADO AND HAIL UP TO TWO INCHES IN DIAMETER. 

  SOURCE...RADAR INDICATED ROTATION. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* THIS DANGEROUS STORM WILL BE NEAR...
  OKETO AROUND 435 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3987 9651 3990 9681 4000 9680 4000 9647
TIME...MOT...LOC 2116Z 290DEG 27KT 4000 9677 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

BOWEN
2 follow-up statements
252 
WWUS53 KTOP 072121
SVSTOP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
421 PM CDT MON SEP 7 2015

KSC117-072145-
/O.CON.KTOP.TO.W.0031.000000T0000Z-150907T2145Z/
MARSHALL-
421 PM CDT MON SEP 7 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR
NORTHWESTERN MARSHALL COUNTY...
    
AT 418 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR ODELL...AND IS
MOVING EAST AT 30 MPH.

HAZARD...DAMAGING TORNADO AND TWO INCH HAIL. 

SOURCE...TRAINED SPOTTERS CONFIRMED TORNADO. AT 420 PM CDT... 
TRAINED SPOTTERS REPORTED DEBRIS BUT WAS UNABLE TO VIEW THE FUNNEL 3 
MILES NORTH OF BREMEN.

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

THIS TORNADO WILL BE NEAR...
  OKETO AROUND 435 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW! MOVE TO A
BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A MOBILE HOME...OR
IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3987 9651 3990 9681 4000 9680 4000 9647
TIME...MOT...LOC 2118Z 290DEG 27KT 3998 9674 

TORNADO...OBSERVED
HAIL...2.00IN

$$

BOWEN
265 
WWUS53 KTOP 072132
SVSTOP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
432 PM CDT MON SEP 7 2015

KSC117-072145-
/O.CON.KTOP.TO.W.0031.000000T0000Z-150907T2145Z/
MARSHALL-
432 PM CDT MON SEP 7 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR
NORTHWESTERN MARSHALL COUNTY...
    
AT 431 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED OVER OKETO...MOVING EAST AT 35 MPH.

HAZARD...TORNADO AND TWO INCH HAIL. 

SOURCE...RADAR INDICATED ROTATION. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

THIS DANGEROUS STORM WILL BE NEAR...
  OKETO AROUND 435 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3987 9651 3993 9677 4000 9677 4000 9647
TIME...MOT...LOC 2131Z 274DEG 29KT 3998 9663 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

BOWEN

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 3:19 PM CDTSevere Thunderstorm WarningTOPWashington41 min
Sep 7, 3:39 PM CDTTornado Warning Tornado observedTOPWashington36 min
Sep 7, 4:14 PM CDTTornado WarningTOPWashington9 min
Sep 7, 4:44 PM CDTTornado WarningTOPMarshall31 min
Sep 7, 5:13 PM CDTSpecial Weather StatementTOPNemaha32 min
Sep 7, 5:24 PM CDTSpecial Weather StatementTOPOttawa36 min
Sep 7, 5:29 PM CDTSevere Thunderstorm WarningTOPDickinson46 min
Sep 7, 6:07 PM CDTSpecial Weather StatementTOPDickinson38 min

Nearby

Tornado Warnings in Kansas, 2015Every tornado warning in 2015Tornadoes in 2015

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.