Alert archive / Kansas / Special Weather Statements in 2017

Special Weather Statement, NWS Wichita, KS

April 20, 2017Sumner County, Kansas

NWS Wichita, KS issued this special weather statement at Apr 20, 2017, 10:52 PM CDT for Sumner County, Kansas. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 20, 2017, 10:52 PM CDT (03:52 UTC)
Expired: Apr 20, 2017, 11:15 PM CDT
In force: 23 min
Issued by: NWS Wichita, KS

County Sumner County, KS

The radar

The Wichita radar (KICT), 56 km from the middle of the area, began a volume at 03:56 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 00:00Z, 3.9 hours before the alert went out and 216 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 909 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 350 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Apr 20, 6:20 PM CDT, 4 hours 32 minutes earlier.

Area forecast discussion, Apr 20, 6:20 PM CDT, 4 hours 32 minutes before

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Hazardous weather outlook, Apr 20, 10:51 PM CDT, 1 minute before

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In the hours before

Special weather statement, Apr 20, 10:52 PM CDT, 0 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
Apr 21, 8:29 AM CDT	River Flood Warning	ICT	Labette, Neosho	63 hr
Apr 21, 8:29 AM CDT	River Flood Warning	ICT	Cherokee, Labette	3 days
Apr 21, 11:11 AM CDT	Special Weather Statement	ICT	Butler, Cowley, Harper, Harvey, Kingman, Reno and 2 more	64 min
Apr 21, 12:20 PM CDT	Special Weather Statement	ICT	Butler, Chautauqua, Cowley, Elk, Greenwood	55 min
Apr 21, 1:11 PM CDT	Special Weather Statement	ICT	Allen, Labette, Montgomery, Neosho, Wilson, Woodson	64 min
Apr 21, 1:42 PM CDT	Areal Flood Warning	ICT	Montgomery	8 hr
Apr 21, 2:15 PM CDT	River Flood Warning	ICT	Neosho	38 hr

Nearby

Special Weather Statements in Kansas, 2017 Every special weather statement in 2017

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.