Alert archive / Kansas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 194, NWS Goodland, KS

July 30, 2020Graham County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Jul 30, 2020, 12:09 AM CDT for Graham County, Kansas. It was in force for 36 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 30, 2020, 12:09 AM CDT (05:09 UTC)
Expired: Jul 30, 2020, 12:45 AM CDT
In force: 36 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Graham County, KS

The radar

The Goodland radar (KGLD), 156 km from the middle of the area, began a volume at 05:08 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

Dodge City, (KDDC), launched 00:00Z, 5.2 hours before the alert went out and 176 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: 1771 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1553 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.2

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 Jul 29, 7:00 PM CDT, 5 hours 9 minutes earlier.

Area forecast discussion, Jul 29, 7:00 PM CDT, 5 hours 9 minutes before

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Hazardous weather outlook, Jul 29, 10:10 PM CDT, 1 hour 59 minutes before

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In the hours before

Special weather statement, Jul 29, 10:20 PM CDT, 1 hour 49 minutes before

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Special weather statement, Jul 29, 10:43 PM CDT, 1 hour 26 minutes before

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Local storm report, Jul 29, 10:58 PM CDT, 1 hour 11 minutes before

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Special weather statement, Jul 29, 11:08 PM CDT, 1 hour 1 minute before

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Local storm report, Jul 29, 11:19 PM CDT, 50 minutes before

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Special weather statement, Jul 29, 11:52 PM CDT, 17 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
Jul 29, 7:10 PM CDT	Special Weather Statement	GLD	Norton	20 min
Jul 29, 7:34 PM CDT	Special Weather Statement	GLD	Norton	26 min
Jul 29, 8:04 PM CDT	Severe Thunderstorm Warning	GLD	Graham, Norton	56 min
Jul 29, 8:56 PM CDT	Special Weather Statement	GLD	Cheyenne	34 min
Jul 29, 9:02 PM CDT	Special Weather Statement	GLD	Graham	28 min
Jul 29, 9:36 PM CDT	Special Weather Statement	GLD	Cheyenne, Sherman	24 min
Jul 29, 10:20 PM CDT	Special Weather Statement	GLD	Rawlins	25 min
Jul 29, 10:43 PM CDT	Special Weather Statement	GLD	Thomas	32 min
Jul 29, 11:08 PM CDT	Special Weather Statement	GLD	Logan	22 min
Jul 29, 11:20 PM CDT	Severe Thunderstorm Warning	GLD	Graham, Sheridan	55 min
Jul 29, 11:52 PM CDT	Special Weather Statement	GLD	Norton	23 min
Jul 29, 7:59 PM CDT	Special Weather Statement	GLD	Yuma	16 min
Jul 29, 8:07 PM CDT	Severe Thunderstorm Warning	GLD	Yuma	53 min
Jul 29, 9:40 PM CDT	Special Weather Statement	GLD	Cheyenne	35 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.