Alert archive / Kansas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 129, NWS Topeka, KS

June 17, 20174 counties in Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Jun 17, 2017, 7:34 PM CDT for 4 counties in Kansas. It was in force for 41 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: Jun 17, 2017, 7:34 PM CDT (00:34 UTC)
Expired: Jun 17, 2017, 8:15 PM CDT
In force: 41 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Lyon County, KS, Osage County, KS, Shawnee County, KS, Wabaunsee County, KS

The radar

The Topeka radar (KTWX), 23 km from the middle of the area, began a volume at 00:35 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
Jun 17, 8:12 PM CDT	TSTM WND GST 60	5 S Auburn, KS

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 38 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 17, 6:12 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KFOE), launched 00:00Z, 0.6 hours before the alert went out and 47 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: 4476 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 1204 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: -0.3
Supercell composite: -1.9

Open this sounding in Storm Lab

The text

As transmitted.

124 
WUUS53 KTOP 180034
SVRTOP
KSC111-139-177-197-180115-
/O.NEW.KTOP.SV.W.0129.170618T0034Z-170618T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
734 PM CDT SAT JUN 17 2017

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  South central Shawnee County in east central Kansas...
  Southeastern Wabaunsee County in east central Kansas...
  Northwestern Osage County in east central Kansas...
  Northeastern Lyon County in east central Kansas...

* Until 815 PM CDT

* At 734 PM CDT, a severe thunderstorm was located near Eskridge,
  moving southeast 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. 

* This severe thunderstorm will be near, 
  Eskridge around 740 PM CDT. 
  Harveyville around 800 PM CDT. 

This includes Kansas Turnpike between mile markers 147 and 168.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3880 9630 3893 9626 3890 9577 3862 9598
TIME...MOT...LOC 0034Z 300DEG 26KT 3884 9618 

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

Skow

4 follow-up statements

586 
WWUS53 KTOP 180038
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
738 PM CDT SAT JUN 17 2017

KSC111-139-177-197-180115-
/O.CON.KTOP.SV.W.0129.000000T0000Z-170618T0115Z/
Shawnee-Wabaunsee-Osage-Lyon-
738 PM CDT SAT JUN 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR SOUTH CENTRAL SHAWNEE...SOUTHEASTERN WABAUNSEE...NORTHWESTERN
OSAGE AND NORTHEASTERN LYON COUNTIES...

At 738 PM CDT, a severe thunderstorm was located near Eskridge,
moving southeast at 30 mph.

HAZARD...70 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings. 

This severe storm will be near...
  Harveyville around 800 PM CDT. 

This includes Kansas Turnpike between mile markers 147 and 168.
 
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 3880 9630 3893 9626 3890 9577 3862 9598
TIME...MOT...LOC 0038Z 300DEG 26KT 3882 9615 

HAIL...1.00IN
WIND...70MPH
 
$$

Skow

398 
WWUS53 KTOP 180048
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
748 PM CDT SAT JUN 17 2017

KSC111-139-177-197-180115-
/O.CON.KTOP.SV.W.0129.000000T0000Z-170618T0115Z/
Shawnee-Wabaunsee-Osage-Lyon-
748 PM CDT SAT JUN 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR SOUTH CENTRAL SHAWNEE...SOUTHEASTERN WABAUNSEE...NORTHWESTERN
OSAGE AND NORTHEASTERN LYON COUNTIES...

At 747 PM CDT, severe thunderstorms were located along a line
extending from 5 miles north of Harveyville to 6 miles north of
Admire, moving southeast at 30 mph.

HAZARD...70 mph wind gusts and nickel size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

These severe storms will be near...
  Harveyville around 755 PM CDT. 
  Auburn around 800 PM CDT. 

This includes Kansas Turnpike between mile markers 148 and 168.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms are producing widespread wind damage. SEEK SHELTER NOW 
inside a sturdy structure and stay away from windows.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3879 9621 3889 9610 3890 9577 3862 9598
TIME...MOT...LOC 0047Z 297DEG 27KT 3887 9597 3873 9610 

HAIL...0.88IN
WIND...70MPH
 
$$

Skow

616 
WWUS53 KTOP 180057
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
757 PM CDT SAT JUN 17 2017

KSC177-180106-
/O.CAN.KTOP.SV.W.0129.000000T0000Z-170618T0115Z/
Shawnee-
757 PM CDT SAT JUN 17 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL SHAWNEE COUNTY
IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until 200 AM CDT for
east central Kansas.

LAT...LON 3865 9597 3876 9615 3888 9600 3885 9582
TIME...MOT...LOC 0056Z 300DEG 26KT 3884 9591 3870 9604 

$$

KSC111-139-197-180115-
/O.CON.KTOP.SV.W.0129.000000T0000Z-170618T0115Z/
Wabaunsee-Osage-Lyon-
757 PM CDT SAT JUN 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR SOUTHEASTERN WABAUNSEE...NORTHWESTERN OSAGE AND NORTHEASTERN LYON
COUNTIES...

At 756 PM CDT, severe thunderstorms were located along a line
extending from 4 miles northeast of Harveyville to 5 miles northeast
of Admire, moving southeast at 30 mph.

HAZARD...70 mph wind gusts and nickel size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

these severe thunderstorms will remain over mainly rural areas of
southeastern Wabaunsee...northwestern Osage and northeastern Lyon
Counties.

This includes Kansas Turnpike between mile markers 149 and 164.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms are producing widespread wind damage. SEEK SHELTER NOW 
inside a sturdy structure and stay away from windows.
 
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3865 9597 3876 9615 3888 9600 3885 9582
TIME...MOT...LOC 0056Z 300DEG 26KT 3884 9591 3870 9604 

HAIL...0.88IN
WIND...70MPH
 
$$

Skow

896 
WWUS53 KTOP 180109
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
809 PM CDT SAT JUN 17 2017

KSC111-139-197-180118-
/O.EXP.KTOP.SV.W.0129.000000T0000Z-170618T0115Z/
Wabaunsee-Osage-Lyon-
809 PM CDT SAT JUN 17 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WABAUNSEE...
NORTHWESTERN OSAGE AND NORTHEASTERN LYON COUNTIES WILL EXPIRE AT 815
PM CDT...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore the warning will
be allowed to expire.

A severe thunderstorm watch remains in effect until 200 AM CDT for
east central Kansas.

LAT...LON 3865 9597 3876 9615 3888 9600 3885 9582
TIME...MOT...LOC 0108Z 300DEG 26KT 3880 9582 3866 9595 

$$

Skow

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Topeka, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 17, 6:47 PM CDT, 47 minutes earlier.

Area forecast discussion, Jun 17, 6:47 PM CDT, 47 minutes before

Area Forecast Discussion
National Weather Service Topeka KS
647 PM CDT Sat Jun 17 2017

...Update to aviation forecast discussion...

.SHORT TERM...(This evening through Sunday)
Issued at 244 PM CDT Sat Jun 17 2017

Early this afternoon, a frontal boundary was oriented southwest to
northeast across the CWA bisecting roughly from Ottawa to northern
Jackson county.  This frontal boundary will be the focus for storms
this afternoon and evening as a mid level shortwave sweeps across
the Central Plains.  While a cap remains in place most of the
afternoon, models do show an erosion late afternoon which would
allow for quick storm initation and intensification.  A highly
unstable atmosphere is in place with CAPE over 4000 J/kg and shear
values between 35-45 knots.  This would allow for storms to quickly
turn severe with supercells possible during initial development.
With steep lapse rates above the current EML, large hail and
damaging winds would be the main hazard with any storms, although an
isolated tornado or two cannot be ruled out.  Some hi-res guidance
suggests storms will develop in northern MO and build into
northeastern KS this afternoon.  Initial singular cells may begin to
form clusters as time goes on with some bowing segments within these
clusters.  If this occurred, the wind risk would be greatly
enhanced.  Location wise, the best chances for severe convection
looks to be along and south of I-70.  Storms will advance southeast
through the night, although post frontal showers and storms will be
possible through the early morning hours.  After tonight, dry
conditions can be expected with surface high pressure moving
directly over Kansas by tomorrow afternoon.

Temperatures this afternoon have been steadily rising into the low
90s, with mid to upper 90s expected as highs.  With dewpoints in the
70s, heat indicies look on track to reach between 100-110 degrees
across the entire area, with the hottest indices in east central
Kansas.  A heat advisory will remain in effect until 7PM this
evening for portions of the area. With the frontal passage in store
this evening, cooler temperatures can be expected tomorrow
along with less oppressive dewpoints.  Highs tomorrow look to top
out in the low 80s.

.LONG TERM...(Sunday night through Saturday)
Issued at 244 PM CDT Sat Jun 17 2017

Sunday night through Tuesday, an upper level trough will amplify
across the eastern conus and keep the central plains in
northwesterly flow aloft. Expect drier and cooler weather with
Highs on Monday in the mid 80s and highs on Tuesday in the upper
80s to lower 90s.

Tuesday night through Saturday, the mid and upper level flow will
become more zonal and a lee surface trough will deepen across the
high plains. Southerly low-level winds will advect deeper
moisture northward. Minor shortwave troughs embedded within the
zonal mid level flow may provide enough ascent for isolated to
scattered thunderstorms through the period. Highs will warm into
the mid to upper 90s Wednesday through Friday, and heat indices
once again may reach advisory criteria. A slightly stronger upper
trough will move across the northern and central plains on Friday
and will cause a surface cold front to push southward across the
CWA Friday night. Saturday may be cooler and drier if the front
can push southward into OK before becoming stationary. Highs on
Saturday may only reach the mid to upper 80s.

&&

.AVIATION...(For the 00Z TAFS through 00Z Sunday evening)
Issued at 642 PM CDT Sat Jun 17 2017

Currently, the near term for the 00Z TAFs are in the frontal zone
for the near term. Complicating factors with storm initiation are
becoming more clear. Bottom line is as further development takes
place, amendments will be likely. For now have left VCTS for
storms as the best placements may just be south of the terminals.
Do see another round of showers and storms coming into the
terminals overnight.

&&

.TOP WATCHES/WARNINGS/ADVISORIES...
Heat Advisory until 7 PM CDT this evening for KSZ022>024-026-
035>040-054>056-058-059.

&&

SHORT TERM...Heller
LONG TERM...Gargan
AVIATION...Drake

Hazardous weather outlook, Jun 17, 3:56 PM CDT, 3 hours 38 minutes before

Hazardous Weather Outlook
National Weather Service Topeka KS
356 PM CDT Sat Jun 17 2017

KSZ008>012-020>024-026-034>040-054>056-058-059-182100-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris-
Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson-
356 PM CDT Sat Jun 17 2017

This hazardous weather outlook is for east central...north
central and northeast Kansas.

.DAY ONE...This Afternoon and tonight.

Another round of thunderstorms are forecast this evening across
eastern Kansas. The storms should develop after 4 pm and exit the
area by 10 pm. Large hail and damaging winds are the primary
threats but an isolated tornado cannot be ruled out. Local flash
flooding is possible if the storms traverse over the same areas
that received heavy rain Friday night.

A heat advisory remains in effect until 7 pm for areas along and
south of a line from Abilene to Manhattan to Holton. Heat indices
are forecast to range between 105 and 110 degrees this afternoon.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

&&

More detailed information can be accessed at...
http://www.weather.gov/top/sitrep

In the hours before

Local storm report, Jun 17, 4:58 PM CDT, 2 hours 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
458 PM CDT SAT JUN 17 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0335 AM     HAIL             5 NE DELIA              39.29N 95.90W
06/17/2017  E1.50 INCH       JACKSON            KS   FIRE DEPT/RESCUE

            TIME ESTIMATED FROM RADAR.

&&

Local storm report, Jun 17, 6:46 PM CDT, 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
646 PM CDT SAT JUN 17 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0643 PM     HAIL             7 NNE WOODBINE          38.88N 96.90W
06/17/2017  E1.75 INCH       GEARY              KS   TRAINED SPOTTER

&&

Local storm report, Jun 17, 6:55 PM CDT, 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
655 PM CDT SAT JUN 17 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0630 PM     HAIL             6 NW WOODBINE           38.86N 97.02W
06/17/2017  E1.75 INCH       DICKINSON          KS   EMERGENCY MNGR

&&

Local storm report, Jun 17, 6:58 PM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
658 PM CDT SAT JUN 17 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0658 PM     HAIL             WHITE CITY              38.80N 96.73W
06/17/2017  E1.75 INCH       MORRIS             KS   TRAINED SPOTTER

&&

Local storm report, Jun 17, 7:29 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
729 PM CDT SAT JUN 17 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0715 PM     HAIL             6 NNW WHITE CITY        38.87N 96.79W
06/17/2017  E1.75 INCH       MORRIS             KS   PUBLIC

            SOCIAL MEDIA.

&&

Local storm report, Jun 17, 7:33 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
733 PM CDT SAT JUN 17 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0730 PM     HAIL             6 N TOPEKA              39.14N 95.69W
06/17/2017  E1.00 INCH       SHAWNEE            KS   TRAINED SPOTTER

&&

BD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:18 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Jefferson, Shawnee	42 min
Jun 17, 7:21 PM CDT	Severe Thunderstorm Warning	TOP	Jackson, Pottawatomie, Shawnee, Wabaunsee	39 min
Jun 17, 7:28 PM CDT	Severe Thunderstorm Warning	TOP	Geary, Morris, Wabaunsee	47 min
Jun 17, 7:44 PM CDT	Severe Thunderstorm Warning	TOP	Morris	46 min
Jun 17, 7:47 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Jefferson, Shawnee	43 min
Jun 17, 7:55 PM CDT	Severe Thunderstorm Warning	TOP	Lyon, Osage, Wabaunsee	35 min
Jun 17, 7:59 PM CDT	Severe Thunderstorm Warning	TOP	Jackson, Jefferson, Shawnee	46 min
Jun 17, 8:21 PM CDT	Severe Thunderstorm Warning	TOP	Lyon, Osage	39 min
Jun 17, 8:24 PM CDT	Severe Thunderstorm Warning	TOP	Jefferson	33 min
Jun 17, 8:34 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Franklin, Osage	41 min
Jun 17, 8:44 PM CDT	Severe Thunderstorm Warning	TOP	Coffey, Lyon, Osage	46 min
Jun 17, 8:58 PM CDT	Areal Flood Advisory	TOP	Jackson, Jefferson, Shawnee	2 hr
Jun 17, 9:05 PM CDT	Severe Thunderstorm Warning	TOP	Franklin	10 min
Jun 17, 9:21 PM CDT	Severe Thunderstorm Warning	TOP	Anderson, Coffey	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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.