Alert archive / Kansas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 167, NWS Topeka, KS

October 11, 2020Cloud County, Republic County, Washington County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Oct 11, 2020, 9:34 PM CDT for Cloud County, Republic County, Washington County, Kansas. It was in force for 41 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: Oct 11, 2020, 9:34 PM CDT (02:34 UTC)
Expired: Oct 11, 2020, 10:15 PM CDT
In force: 41 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Cloud County, KS, Republic County, KS, Washington County, KS

The radar

The Grand Island radar (KUEX), 108 km from the middle of the area, began a volume at 02:36 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 (KTOP), launched 00:00Z, 2.6 hours before the alert went out and 175 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: 410 J/kg
Mixed-layer CIN: -391 J/kg
Mixed-layer LCL: 2079 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 349 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 Oct 11, 6:58 PM CDT, 2 hours 36 minutes earlier.

Area forecast discussion, Oct 11, 6:58 PM CDT, 2 hours 36 minutes before

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Hazardous weather outlook, Oct 11, 3:37 PM CDT, 5 hours 57 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
Oct 11, 8:25 PM CDT	High Wind Warning	TOP	Clay, Cloud, Ottawa, Republic, Washington	4 hr
Oct 11, 9:19 PM CDT	Special Weather Statement	TOP	Republic	26 min
Oct 11, 10:16 PM CDT	Special Weather Statement	TOP	Washington	29 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2020 Every severe thunderstorm warning in 2020

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.