Alert archive / Kansas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 285, NWS Goodland, KS

August 20, 2019Sherman County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Aug 20, 2019, 6:59 PM MDT for Sherman County, Kansas. It was in force for 32 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: Aug 20, 2019, 6:59 PM MDT (00:59 UTC)
Expired: Aug 20, 2019, 7:31 PM MDT
In force: 32 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Sherman County, KS

The radar

The Goodland radar (KGLD), 2 km from the middle of the area, began a volume at 00:57 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

Denver, CO (KDNR), launched 00:00Z, 1.0 hours before the alert went out and 142 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: 358 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 3844 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -51 m²/s²
0-3 km storm-relative helicity: -24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.3

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 Goodland, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 20, 5:52 PM MDT, 1 hour 7 minutes earlier.

Area forecast discussion, Aug 20, 5:52 PM MDT, 1 hour 7 minutes before

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Hazardous weather outlook, Aug 20, 2:53 PM MDT, 4 hours 6 minutes before

Hazardous Weather Outlook
National Weather Service Goodland KS
253 PM MDT Tue Aug 20 2019

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-212100-
Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins-
Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove-
Greeley-Wichita-Dundy-Hitchcock-Red Willow-
253 PM MDT Tue Aug 20 2019 /353 PM CDT Tue Aug 20 2019/

This hazardous weather outlook is for extreme southwest Nebraska...
northwest Kansas and east central Colorado.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

There is a marginal risk for a severe storm or two this afternoon and
evening for areas along and south of Interstate 70 in northeast
Colorado and northwest Kansas. Strong winds and hail up to quarter
size will be possible with stronger storms.

Overnight, there is a slight risk for severe storms in southwest
Nebraska and adjacent areas of northeast Colorado and northwest
Kansas. Damaging wind gusts will be the primary hazard.

Areas of fog will develop late tonight through early Wednesday
morning, mainly north of Interstate 70 including southwest Nebraska.
Visibility may be reduced to less than a mile at times.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH TUESDAY...

There is a marginal risk for severe thunderstorms Wednesday afternoon
and evening across the entire area. The best chances will be along
and south of Interstate 70 Wednesday night. Strong winds and hail up
to quarter size may accompany stronger storms. Locally heavy rainfall
will also be possible, mainly in northeast Colorado.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required.

In the hours before

Local storm report, Aug 20, 5:10 PM MDT, 1 hour 49 minutes before

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Local storm report, Aug 20, 5:32 PM MDT, 1 hour 27 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 6:05 PM MDT	Flash Flood Warning	GLD	Gove	3 hr
Aug 20, 6:10 PM MDT	Special Weather Statement	GLD	Logan	20 min
Aug 20, 6:28 PM MDT	Severe Thunderstorm Warning	GLD	Logan, Thomas	47 min
Aug 20, 6:51 PM MDT	Special Weather Statement	GLD	Thomas	24 min
Aug 20, 7:11 PM MDT	Severe Thunderstorm Warning	GLD	Thomas	49 min
Aug 20, 7:24 PM MDT	Special Weather Statement	GLD	Thomas	21 min
Aug 20, 7:59 PM MDT	Special Weather Statement	GLD	Thomas	16 min
Aug 20, 8:20 PM MDT	Special Weather Statement	GLD	Thomas	25 min
Aug 20, 8:51 PM MDT	Special Weather Statement	GLD	Gove	24 min
Aug 20, 9:35 PM MDT	Special Weather Statement	GLD	Logan	40 min
Aug 21, 4:56 AM MDT	Special Weather Statement	GLD	Graham	34 min
Aug 21, 4:04 AM MDT	Special Weather Statement	GLD	Red Willow	26 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2019 Every severe thunderstorm warning in 2019

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.