Alert archive / Kansas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 223, NWS Topeka, KS

August 28, 2018Marshall County, Washington County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Aug 28, 2018, 12:41 PM CDT for Marshall County, Washington County, Kansas. It was in force for 34 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: Aug 28, 2018, 12:41 PM CDT (17:41 UTC)
Expired: Aug 28, 2018, 1:15 PM CDT
In force: 34 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 17:41 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 nearest sounding before it

Topeka, KS (KFOE), launched 12:00Z, 5.7 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: 858 J/kg
Mixed-layer CIN: -435 J/kg
Mixed-layer LCL: 1348 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 407 m²/s²
0-3 km storm-relative helicity: 359 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Aug 28, 6:30 AM CDT, 6 hours 11 minutes earlier.

Area forecast discussion, Aug 28, 6:30 AM CDT, 6 hours 11 minutes before

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Hazardous weather outlook, Aug 28, 5:42 AM CDT, 6 hours 59 minutes before

Hazardous Weather Outlook
National Weather Service Topeka KS
542 AM CDT Tue Aug 28 2018

KSZ008>012-020>024-026-034>040-054>056-058-059-291045-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris-
Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson-
542 AM CDT Tue Aug 28 2018

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

.DAY ONE...Today and Tonight.

Isolated thunderstorms are possible this morning. Wind gusts to
40 mph may be possible.

There is a chance for a few severe thunderstorms to develop during
the late afternoon and evening across portions of northeast and
east central Kansas. If thunderstorms develop in this time frame,
damaging wind gusts, localized flooding and large hail are the
primary hazards. An isolated tornado cannot be ruled out through
early evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.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, Aug 28, 9:42 AM CDT, 2 hours 59 minutes before

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Special weather statement, Aug 28, 10:00 AM CDT, 2 hours 41 minutes before

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Local storm report, Aug 28, 10:03 AM CDT, 2 hours 38 minutes before

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Special weather statement, Aug 28, 10:19 AM CDT, 2 hours 22 minutes before

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Special weather statement, Aug 28, 10:41 AM CDT, 2 hours before

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Special weather statement, Aug 28, 12:39 PM CDT, 2 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 9:42 AM CDT	Special Weather Statement	TOP	Nemaha	33 min
Aug 28, 10:00 AM CDT	Special Weather Statement	TOP	Nemaha	45 min
Aug 28, 10:19 AM CDT	Special Weather Statement	TOP	Lyon	41 min
Aug 28, 10:41 AM CDT	Special Weather Statement	TOP	Brown	34 min
Aug 28, 12:39 PM CDT	Special Weather Statement	TOP	Marshall	36 min
Aug 28, 1:25 PM CDT	Special Weather Statement	TOP	Morris	35 min
Aug 28, 1:50 PM CDT	Special Weather Statement	TOP	Nemaha	25 min
Aug 28, 1:59 PM CDT	Special Weather Statement	TOP	Marshall	31 min
Aug 28, 2:29 PM CDT	Special Weather Statement	TOP	Nemaha	31 min
Aug 28, 2:45 PM CDT	Special Weather Statement	TOP	Brown	30 min
Aug 28, 2:55 PM CDT	Severe Thunderstorm Warning	TOP	Brown	18 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.