Alert archive / Kansas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 39, NWS Topeka, KS

April 19, 2017Marshall County, Washington County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Apr 19, 2017, 7:31 PM CDT for Marshall County, Washington County, Kansas. It was in force for 44 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: Apr 19, 2017, 7:31 PM CDT (00:31 UTC)
Expired: Apr 19, 2017, 8:15 PM CDT
In force: 44 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Marshall County, KS, Washington County, KS

The radar

The Topeka radar (KTWX), 82 km from the middle of the area, began a volume at 00:31 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.

Issued	Product	Office	Lasted
Apr 19, 3:49 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KFOE), launched 00:00Z, 0.5 hours before the alert went out and 114 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: 590 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 1327 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 240 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.8

Open this sounding in Storm Lab

The text

As transmitted.

385 
WUUS53 KTOP 200031
SVRTOP
KSC117-201-200115-
/O.NEW.KTOP.SV.W.0039.170420T0031Z-170420T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
731 PM CDT WED APR 19 2017

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  Southeastern Washington County in north central Kansas...
  Southern Marshall County in northeastern Kansas...

* Until 815 PM CDT

* At 731 PM CDT, a severe thunderstorm was located 4 miles southwest
  of Waterville, moving northeast at 45 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees. 

* This severe thunderstorm will be near,
  Waterville around 735 PM CDT. 
  Blue Rapids around 745 PM CDT. 
  Frankfort around 800 PM CDT. 
  Beattie around 805 PM CDT. 
  Vermillion around 810 PM CDT. 
  Axtell around 815 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3957 9689 3967 9699 3993 9624 3958 9624
TIME...MOT...LOC 0031Z 249DEG 38KT 3964 9681 

HAIL...1.50IN
WIND...60MPH
 
$$

Skow

3 follow-up statements

342 
WWUS53 KTOP 200040
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
740 PM CDT WED APR 19 2017

KSC201-200050-
/O.CAN.KTOP.SV.W.0039.000000T0000Z-170420T0115Z/
Washington-
740 PM CDT WED APR 19 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WASHINGTON COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore the warning has been cancelled.

A severe thunderstorm watch remains in effect until 1100 PM CDT for
northeastern Kansas.

LAT...LON 3959 9679 3971 9680 3993 9624 3959 9624
TIME...MOT...LOC 0040Z 249DEG 38KT 3967 9669 

$$

KSC117-200115-
/O.CON.KTOP.SV.W.0039.000000T0000Z-170420T0115Z/
Marshall-
740 PM CDT WED APR 19 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR SOUTHERN MARSHALL COUNTY...

At 740 PM CDT, a severe thunderstorm was located over Blue Rapids,
moving east at 45 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees. 

This severe storm will be near...
  Frankfort around 800 PM CDT. 
  Beattie around 805 PM CDT. 
  Vermillion around 810 PM CDT. 
  Axtell around 815 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3959 9679 3971 9680 3993 9624 3959 9624
TIME...MOT...LOC 0040Z 249DEG 38KT 3967 9669 

HAIL...1.50IN
WIND...60MPH
 
$$

Skow

131 
WWUS53 KTOP 200052
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
752 PM CDT WED APR 19 2017

KSC117-200115-
/O.CON.KTOP.SV.W.0039.000000T0000Z-170420T0115Z/
Marshall-
752 PM CDT WED APR 19 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR SOUTHERN MARSHALL COUNTY...

At 751 PM CDT, a severe thunderstorm was located 5 miles east of Blue
Rapids, moving east at 40 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. 

This severe storm will be near...
  Frankfort around 805 PM CDT. 
  Vermillion around 815 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3959 9671 3976 9664 3993 9624 3959 9624
TIME...MOT...LOC 0051Z 259DEG 34KT 3969 9656 

HAIL...1.00IN
WIND...60MPH
 
$$

Skow

226 
WWUS53 KTOP 200111
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
811 PM CDT WED APR 19 2017

KSC117-200120-
/O.EXP.KTOP.SV.W.0039.000000T0000Z-170420T0115Z/
Marshall-
811 PM CDT WED APR 19 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MARSHALL COUNTY WILL
EXPIRE AT 815 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning will be allowed to expire.  However small hail,
gusty winds and heavy rain are still possible with this thunderstorm.

A severe thunderstorm watch remains in effect until 1100 PM CDT for
northeastern Kansas.

LAT...LON 3959 9671 3976 9664 3993 9624 3959 9624
TIME...MOT...LOC 0110Z 249DEG 38KT 3976 9632 

$$

Skow

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 19, 7:24 PM CDT	Severe Thunderstorm Warning	TOP	Dickinson, Geary, Ottawa	39 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2017 Every severe thunderstorm warning in 2017

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.