Alert archive / Kansas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 179, NWS Topeka, KS

July 19, 2018Marshall County, Washington County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Jul 19, 2018, 4:03 AM CDT for Marshall County, Washington County, Kansas. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 19, 2018, 4:03 AM CDT (09:03 UTC)
Expired: Jul 19, 2018, 4:45 AM CDT
In force: 42 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Marshall County, KS, Washington County, KS

The radar

The Topeka radar (KTWX), 100 km from the middle of the area, began a volume at 09:07 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
Jul 19, 1:00 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KFOE), launched 00:00Z, 9.1 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-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: 1667 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1186 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 9.5

Open this sounding in Storm Lab

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 Jul 19, 4:01 AM CDT, 2 minutes earlier.

Area forecast discussion, Jul 19, 4:01 AM CDT, 2 minutes before

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Hazardous weather outlook, Jul 18, 3:49 PM CDT, 12 hours 14 minutes before

Hazardous Weather Outlook
National Weather Service Topeka KS
349 PM CDT Wed Jul 18 2018

KSZ008>012-020>024-026-034>040-054>056-058-059-192100-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris-
Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson-
349 PM CDT Wed Jul 18 2018

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

.DAY ONE...This Afternoon and tonight.

There is a chance for thunderstorms across the entire area through
the night. Some of the thunderstorms late this evening and
overnight may be strong to severe with the primary hazard being
damaging wind gusts.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Heat index values are expected to reach 103 to 107 degrees
Thursday afternoon south of Interstate 35. A Heat Advisory is in
effect for this area.

.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

Special weather statement, Jul 19, 3:48 AM CDT, 15 minutes before

Special Weather Statement
National Weather Service Topeka KS
348 AM CDT THU JUL 19 2018

KSZ010-190915-
Marshall-
348 AM CDT THU JUL 19 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MARSHALL COUNTY UNTIL
415 AM CDT...

At 347 AM CDT, Doppler radar was tracking a strong thunderstorm near
Odell, moving southeast at 40 mph.

Penny size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Marysville, Beattie, Oketo and Bremen.

A Severe Thunderstorm Watch remains in effect until 800 AM CDT for
north central and northeastern Kansas.

LAT...LON 4000 9643 3982 9629 3968 9672 3988 9681
      4000 9681
TIME...MOT...LOC 0847Z 335DEG 34KT 4008 9677

Gargan

Special weather statement, Jul 19, 3:59 AM CDT, 4 minutes before

Special Weather Statement
National Weather Service Topeka KS
359 AM CDT THU JUL 19 2018

KSZ009-010-190930-
Washington-Marshall-
359 AM CDT THU JUL 19 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN WASHINGTON AND
NORTHWESTERN MARSHALL COUNTIES UNTIL 430 AM CDT...

At 359 AM CDT, Doppler radar was tracking a strong thunderstorm 4
miles east of Hollenberg, moving south at 40 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Hanover, Greenleaf, Barnes, Hollenberg and Bremen.

A Severe Thunderstorm Watch remains in effect until 800 AM CDT for
north central and northeastern Kansas.

LAT...LON 3972 9674 3971 9701 4000 9704 4000 9680
TIME...MOT...LOC 0859Z 349DEG 37KT 3999 9690

Gargan

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 3:48 AM CDT	Special Weather Statement	TOP	Marshall	27 min
Jul 19, 3:59 AM CDT	Special Weather Statement	TOP	Washington	31 min
Jul 19, 4:48 AM CDT	Special Weather Statement	TOP	Pottawatomie	27 min
Jul 19, 12:15 PM CDT	Severe Thunderstorm Warning	TOP	Ottawa	60 min
Jul 19, 12:16 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Ottawa	59 min
Jul 19, 12:48 PM CDT	Severe Thunderstorm Warning	TOP	Ottawa	57 min
Jul 19, 12:49 PM CDT	Severe Thunderstorm Warning	TOP	Ottawa	41 min
Jul 19, 12:54 PM CDT	Severe Thunderstorm Warning	TOP	Cloud	21 min
Jul 19, 1:09 PM CDT	Severe Thunderstorm Warning	TOP	Cloud	53 min
Jul 19, 1:14 PM CDT	Severe Thunderstorm Warning	TOP	Ottawa	47 min
Jul 19, 1:18 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Dickinson	57 min
Jul 19, 1:28 PM CDT	Severe Thunderstorm Warning	TOP	Clay	47 min
Jul 19, 1:47 PM CDT	Severe Thunderstorm Warning	TOP	Geary, Pottawatomie, Riley	58 min
Jul 19, 2:14 PM CDT	Severe Thunderstorm Warning	TOP	Geary, Jackson, Morris, Pottawatomie, Riley, Shawnee and 1 more	61 min
Jul 19, 2:26 PM CDT	Special Weather Statement	TOP	Lyon, Morris	64 min
Jul 19, 2:39 PM CDT	Severe Thunderstorm Warning	TOP	Jackson, Lyon, Osage, Pottawatomie, Shawnee, Wabaunsee	66 min
Jul 19, 2:52 PM CDT	Severe Thunderstorm Warning	TOP	Franklin	53 min
Jul 19, 3:02 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Franklin, Jackson, Jefferson, Osage, Shawnee	58 min
Jul 19, 3:05 PM CDT	Severe Thunderstorm Warning	TOP	Coffey, Lyon, Osage	25 min
Jul 19, 3:24 PM CDT	Severe Thunderstorm Warning	TOP	Anderson, Coffey, Franklin, Lyon, Osage	66 min
Jul 19, 3:34 PM CDT	Severe Thunderstorm Warning	TOP	Anderson	26 min
Jul 19, 3:48 PM CDT	Severe Thunderstorm Warning	TOP	Anderson, Coffey, Franklin	57 min
Jul 19, 3:58 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Franklin	30 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2018 Every severe thunderstorm warning in 2018

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.