Alert archive / Kansas / Freeze Warnings in 2020

Freeze Warning 6, NWS Wichita, KS

April 17, 202017 counties in Kansas

NWS Wichita, KS issued this freeze warning at Apr 17, 2020, 3:29 PM CDT for 17 counties in Kansas. It took effect at Apr 18, 2020, 1:00 AM CDT. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 17, 2020, 3:29 PM CDT (20:29 UTC)
In effect from: Apr 18, 2020, 1:00 AM CDT
Expired: Apr 18, 2020, 9:00 AM CDT
In force: 8 hr
Issued by: NWS Wichita, KS

Counties Allen County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Cowley County, KS, Elk County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Labette County, KS, Marion County, KS, Montgomery County, KS, Neosho County, KS, Sedgwick County, KS, Sumner County, KS, Wilson County, KS, Woodson County, KS

The radar

The Wichita radar (KICT), 87 km from the middle of the area, began a volume at 20:32 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, 8.5 hours before the alert went out and 248 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: 1007 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 266 m²/s²
0-3 km storm-relative helicity: 412 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 freeze 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 freeze warning went out at Apr 17, 3:23 PM CDT, 6 minutes earlier.

Area forecast discussion, Apr 17, 3:23 PM CDT, 6 minutes before

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Hazardous weather outlook, Apr 17, 9:00 AM CDT, 6 hours 29 minutes before

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In the hours before

Local storm report, Apr 17, 10:25 AM CDT, 5 hours 4 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 16, 7:25 PM CDT	Special Weather Statement	ICT	Butler	35 min
Apr 16, 7:28 PM CDT	Special Weather Statement	ICT	Kingman, Sedgwick	32 min
Apr 16, 7:56 PM CDT	Special Weather Statement	ICT	Butler	34 min
Apr 16, 7:59 PM CDT	Special Weather Statement	ICT	Sedgwick	31 min
Apr 16, 10:59 PM CDT	Winter Weather Advisory	ICT	Barton, Ellsworth, Lincoln, McPherson, Marion, Rice and 2 more	8 hr

Nearby

Freeze Warnings in Kansas, 2020 Every freeze 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.