Alert archive / Kansas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 138, NWS Wichita, KS

July 20, 2020Sumner County, Kansas

NWS Wichita, KS issued this severe thunderstorm warning at Jul 20, 2020, 5:16 PM CDT for Sumner County, Kansas. It was in force for 40 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 20, 2020, 5:16 PM CDT (22:16 UTC)
Expired: Jul 20, 2020, 5:56 PM CDT
In force: 40 min
Issued by: NWS Wichita, KS
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Sumner County, KS

The radar

The Wichita radar (KICT), 47 km from the middle of the area, began a volume at 22:15 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

Norman, OK (KOUN), launched 12:00Z, 10.3 hours before the alert went out and 224 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: 555 J/kg
Mixed-layer CIN: -149 J/kg
Mixed-layer LCL: 1317 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 57 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 Wichita, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 20, 3:09 PM CDT, 2 hours 7 minutes earlier.

Area forecast discussion, Jul 20, 3:09 PM CDT, 2 hours 7 minutes before

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Hazardous weather outlook, Jul 20, 4:37 PM CDT, 39 minutes before

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In the hours before

Special weather statement, Jul 20, 1:06 PM CDT, 4 hours 10 minutes before

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Special weather statement, Jul 20, 1:32 PM CDT, 3 hours 44 minutes before

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Local storm report, Jul 20, 2:13 PM CDT, 3 hours 3 minutes before

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Special weather statement, Jul 20, 5:08 PM CDT, 8 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 19, 7:02 PM CDT	Special Weather Statement	ICT	Greenwood	43 min
Jul 19, 8:07 PM CDT	Special Weather Statement	ICT	Allen	23 min
Jul 19, 8:27 PM CDT	Severe Thunderstorm Warning	ICT	Allen	78 min
Jul 19, 8:45 PM CDT	Special Weather Statement	ICT	Greenwood	60 min
Jul 19, 8:50 PM CDT	Severe Thunderstorm Warning	ICT	Greenwood	55 min
Jul 19, 9:41 PM CDT	Severe Thunderstorm Warning	ICT	Greenwood	42 min
Jul 19, 10:18 PM CDT	Special Weather Statement	ICT	Labette	57 min
Jul 19, 11:42 PM CDT	Special Weather Statement	ICT	Russell	33 min
Jul 20, 12:19 AM CDT	Special Weather Statement	ICT	Lincoln	41 min
Jul 20, 12:54 AM CDT	Special Weather Statement	ICT	Lincoln	36 min
Jul 20, 1:06 PM CDT	Special Weather Statement	ICT	Wilson	24 min
Jul 20, 1:32 PM CDT	Special Weather Statement	ICT	Wilson	28 min
Jul 20, 1:56 PM CDT	Severe Thunderstorm Warning	ICT	Montgomery, Wilson	25 min
Jul 20, 5:08 PM CDT	Special Weather Statement	ICT	Sumner	67 min
Jul 20, 6:06 PM CDT	Special Weather Statement	ICT	Sumner	54 min
Jul 20, 6:35 PM CDT	Special Weather Statement	ICT	Sedgwick	40 min
Jul 20, 6:59 PM CDT	Special Weather Statement	ICT	Butler	61 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.