Alert archive / Kansas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 179, NWS Wichita, KS

July 18, 2018Labette County, Kansas

NWS Wichita, KS issued this severe thunderstorm warning at Jul 18, 2018, 3:44 PM CDT for Labette County, Kansas. It was in force for 22 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 18, 2018, 3:44 PM CDT (20:44 UTC)
Expired: Jul 18, 2018, 4:06 PM CDT
In force: 22 min
Issued by: NWS Wichita, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Labette County, KS

The radar

The Tulsa radar (KINX), 115 km from the middle of the area, began a volume at 20:47 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

Springfield, MO (KSGF), launched 12:00Z, 8.7 hours before the alert went out and 137 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: 798 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 861 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 4.0

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 Wichita, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 18, 2:47 PM CDT, 57 minutes earlier.

Area forecast discussion, Jul 18, 2:47 PM CDT, 57 minutes before

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Hazardous weather outlook, Jul 18, 1:37 PM CDT, 2 hours 7 minutes before

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In the hours before

Special weather statement, Jul 18, 3:26 PM CDT, 18 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 10:50 PM CDT	Special Weather Statement	ICT	Harper	40 min
Jul 17, 11:32 PM CDT	Special Weather Statement	ICT	Harper	43 min
Jul 17, 11:43 PM CDT	Special Weather Statement	ICT	Kingman	47 min
Jul 18, 12:39 AM CDT	Special Weather Statement	ICT	Sumner	36 min
Jul 18, 3:22 PM CDT	Heat Advisory	ICT	Allen, Butler, Chautauqua, Cowley, Elk, Greenwood and 11 more	29 hr
Jul 18, 3:26 PM CDT	Special Weather Statement	ICT	Labette	49 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.