Alert archive / Kansas / Tornado Warnings in 2015

Tornado Warning 32, NWS Topeka, KS

September 7, 2015Marshall County, Kansas

NWS Topeka, KS issued this tornado warning at Sep 7, 2015, 4:44 PM CDT for Marshall County, Kansas. It was in force for 31 min. 1 report 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, 4:44 PM CDT (21:44 UTC)
Expired: Sep 7, 2015, 5:15 PM CDT
In force: 31 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.5 in

County Marshall County, KS

The radar

The Topeka radar (KTWX), 103 km from the middle of the area, began a volume at 21:45 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

Time	Report	Where	Remark
Sep 7, 5:02 PM CDT	TSTM WND GST 60	2 S Summerfield, KS

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.

Issued	Product	Office	Lasted
Sep 7, 3:37 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Topeka, KS (KFOE), launched 12:00Z, 9.7 hours before the alert went out and 121 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

541 
WFUS53 KTOP 072144
TORTOP
KSC117-072215-
/O.NEW.KTOP.TO.W.0032.150907T2144Z-150907T2215Z/

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

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

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

* UNTIL 515 PM CDT
    
* AT 442 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR OKETO...MOVING EAST AT 30 MPH.

  HAZARD...TORNADO AND PING PONG BALL SIZE 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 STORM HAS HAD A HISTORY OF PRODUCING TORNADOES.

* THIS DANGEROUS STORM WILL BE NEAR...
  BEATTIE AROUND 455 PM CDT.
  SUMMERFIELD AND SUMMERFIELD AROUND 500 PM CDT.
  AXTELL AROUND 515 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 3984 9626 3988 9663 4000 9661 4000 9625
TIME...MOT...LOC 2142Z 277DEG 26KT 3997 9652 

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$

BOWEN

3 follow-up statements

218 
WWUS53 KTOP 072149
SVSTOP

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

KSC117-072215-
/O.CON.KTOP.TO.W.0032.000000T0000Z-150907T2215Z/
MARSHALL-
449 PM CDT MON SEP 7 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
NORTHEASTERN MARSHALL COUNTY...
    
AT 449 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR SUMMERFIELD...MOVING EAST AT 30 MPH.

HAZARD...TORNADO AND GOLF BALL SIZE HAIL. 

SOURCE...RADAR INDICATED ROTATION. AT 447 PM CDT...EMERGENCY MANAGER 
REPORTED LARGE TREES DOWN IN OKETO. 

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...
  SUMMERFIELD AND SUMMERFIELD AROUND 500 PM CDT.
  AXTELL AROUND 510 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 3984 9626 3990 9658 4000 9657 4000 9625
TIME...MOT...LOC 2149Z 277DEG 26KT 3996 9645 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

BOWEN

676 
WWUS53 KTOP 072200
SVSTOP

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

KSC117-072215-
/O.CON.KTOP.TO.W.0032.000000T0000Z-150907T2215Z/
MARSHALL-
500 PM CDT MON SEP 7 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
NORTHEASTERN MARSHALL COUNTY...
    
AT 500 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR SUMMERFIELD...MOVING EAST AT 40 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...
  AXTELL AROUND 505 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 3984 9626 3993 9644 4000 9645 4000 9625
TIME...MOT...LOC 2200Z 274DEG 36KT 3994 9632 

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

$$

BOWEN

913 
WWUS53 KTOP 072208
SVSTOP

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

KSC117-072218-
/O.EXP.KTOP.TO.W.0032.000000T0000Z-150907T2215Z/
MARSHALL-
508 PM CDT MON SEP 7 2015

...THE TORNADO WARNING FOR NORTHEASTERN MARSHALL COUNTY WILL EXPIRE
AT 515 PM CDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO. 
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER GUSTY 
WINDS...SMALL HAIL AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS 
THUNDERSTORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FOR
NORTHEASTERN KANSAS.

LAT...LON 3984 9626 3993 9644 4000 9645 4000 9625
TIME...MOT...LOC 2205Z 277DEG 26KT 3994 9632 

$$

BOWEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 7, 3:19 PM CDT	Severe Thunderstorm Warning	TOP	Washington	41 min
Sep 7, 3:39 PM CDT	Tornado Warning Tornado observed	TOP	Washington	36 min
Sep 7, 4:14 PM CDT	Tornado Warning	TOP	Washington	9 min
Sep 7, 4:16 PM CDT	Tornado Warning	TOP	Marshall	29 min
Sep 7, 5:13 PM CDT	Special Weather Statement	TOP	Nemaha	32 min
Sep 7, 5:24 PM CDT	Special Weather Statement	TOP	Ottawa	36 min
Sep 7, 5:29 PM CDT	Severe Thunderstorm Warning	TOP	Dickinson	46 min
Sep 7, 6:07 PM CDT	Special Weather Statement	TOP	Dickinson	38 min

Nearby

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