Alert archive / Colorado / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 67, NWS Goodland, KS

May 23, 2015Cheyenne County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at May 23, 2015, 4:54 PM MDT for Cheyenne County, Colorado. It was in force for 51 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: May 23, 2015, 4:54 PM MDT (22:54 UTC)
Expired: May 23, 2015, 5:45 PM MDT
In force: 51 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Cheyenne County, CO

The radar

The Goodland radar (KGLD), 98 km from the middle of the area, began a volume at 22:54 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 23, 12:54 PM MDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 10.9 hours before the alert went out and 128 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: 1 J/kg
Mixed-layer CIN: -241 J/kg
Mixed-layer LCL: 762 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 67 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 Goodland, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at May 23, 2:28 PM MDT, 2 hours 26 minutes earlier.

Area forecast discussion, May 23, 2:28 PM MDT, 2 hours 26 minutes before

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Hazardous weather outlook, May 23, 10:50 AM MDT, 6 hours 4 minutes before

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In the hours before

Special weather statement, May 23, 4:30 PM MDT, 24 minutes before

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Local storm report, May 23, 4:53 PM MDT, 1 minute 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
May 23, 3:46 AM MDT	Flash Flood Watch	GLD	Cheyenne	18 hr
May 22, 6:18 PM MDT	Special Weather Statement	GLD	Kit Carson	27 min
May 22, 6:40 PM MDT	Special Weather Statement	GLD	Kit Carson	50 min
May 22, 6:43 PM MDT	Flash Flood Warning	GLD	Kit Carson	8 hr
May 22, 7:28 PM MDT	Special Weather Statement	GLD	Kit Carson	17 min
May 22, 7:41 PM MDT	Special Weather Statement	GLD	Kit Carson	34 min
May 22, 8:19 PM MDT	Flash Flood Warning	GLD	Kit Carson	6 hr
May 22, 8:33 PM MDT	Special Weather Statement	GLD	Kit Carson	27 min
May 23, 4:30 PM MDT	Special Weather Statement	GLD	Cheyenne	30 min
May 23, 4:59 PM MDT	Special Weather Statement	GLD	Kit Carson	31 min
May 23, 5:24 PM MDT	Special Weather Statement	GLD	Cheyenne	21 min
May 23, 5:38 PM MDT	Special Weather Statement	GLD	Kit Carson	37 min
May 23, 5:42 PM MDT	Special Weather Statement	GLD	Cheyenne	48 min
May 23, 5:54 PM MDT	Special Weather Statement	GLD	Yuma	36 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2015 Every severe thunderstorm warning in 2015

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.