Alert archive / Nebraska / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 88, NWS Cheyenne, WY

June 18, 2013Cheyenne County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 18, 2013, 10:48 PM MDT for Cheyenne County, Nebraska. It was in force for 42 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: Jun 18, 2013, 10:48 PM MDT (04:48 UTC)
Expired: Jun 18, 2013, 11:30 PM MDT
In force: 42 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Cheyenne County, NE

The radar

The Cheyenne radar (KCYS), 152 km from the middle of the area, began a volume at 04:48 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, 4.8 hours before the alert went out and 151 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: 3507 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

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 Cheyenne, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 18, 9:47 PM MDT, 1 hour 1 minute earlier.

Area forecast discussion, Jun 18, 9:47 PM MDT, 1 hour 1 minute before

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Hazardous weather outlook, Jun 18, 9:52 PM MDT, 56 minutes before

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In the hours before

Local storm report, Jun 18, 8:14 PM MDT, 2 hours 34 minutes before

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Special weather statement, Jun 18, 8:58 PM MDT, 1 hour 50 minutes before

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Special weather statement, Jun 18, 9:08 PM MDT, 1 hour 40 minutes before

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Special weather statement, Jun 18, 9:50 PM MDT, 58 minutes before

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Special weather statement, Jun 18, 9:54 PM MDT, 54 minutes before

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Local storm report, Jun 18, 10:16 PM MDT, 32 minutes before

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The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 18, 6:21 PM MDT	Areal Flood Advisory	CYS	Goshen, Laramie	4 hr
Jun 18, 6:26 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	64 min
Jun 18, 6:47 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	43 min
Jun 18, 7:33 PM MDT	Special Weather Statement	CYS	Laramie	42 min
Jun 18, 8:58 PM MDT	Special Weather Statement	CYS	Laramie	47 min
Jun 18, 6:03 PM MDT	Special Weather Statement	CYS	Scotts Bluff	27 min
Jun 18, 6:04 PM MDT	Special Weather Statement	CYS	Banner	41 min
Jun 18, 6:16 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Scotts Bluff	44 min
Jun 18, 6:58 PM MDT	Special Weather Statement	CYS	Sioux	62 min
Jun 18, 7:10 PM MDT	Special Weather Statement	CYS	Cheyenne	65 min
Jun 18, 7:39 PM MDT	Special Weather Statement	CYS	Scotts Bluff	21 min
Jun 18, 9:08 PM MDT	Special Weather Statement	CYS	Box Butte, Morrill	52 min
Jun 18, 9:50 PM MDT	Special Weather Statement	CYS	Kimball	55 min
Jun 18, 9:54 PM MDT	Special Weather Statement	CYS	Cheyenne	51 min
Jun 18, 10:51 PM MDT	Special Weather Statement	CYS	Cheyenne	54 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2013 Every severe thunderstorm warning in 2013

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.