Alert archive / Nebraska / Mesoscale Discussions in 2015

Mesoscale Discussion 1468

July 18, 20156 counties in Colorado; 11 counties in Nebraska; Laramie County, Wyoming

The Storm Prediction Center issued this mesoscale discussion at Jul 18, 2015, 3:29 PM MDT for 6 counties in Colorado; 11 counties in Nebraska; Laramie County, Wyoming. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 18, 2015, 3:29 PM MDT (21:29 UTC)
Expired: Jul 18, 2015, 5:30 PM MDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Adams County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Weld County, CO, Arthur County, NE, Banner County, NE, Chase County, NE, Cheyenne County, NE, Deuel County, NE, Garden County, NE, Keith County, NE, Kimball County, NE, Morrill County, NE, Perkins County, NE, Scotts Bluff County, NE, Laramie County, WY

The radar

The Cheyenne radar (KCYS), 124 km from the middle of the area, began a volume at 21:31 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 439Jul 18, 6:40 PM MDT

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 17, 7:55 PM MDT	Severe Thunderstorm Watch	SPC	Antelope, Boone, Cedar, Cuming, Dakota, Dixon and 6 more	5 hr
Jul 17, 7:57 PM MDT	Mesoscale Discussion	SPC	Antelope, Boone, Boyd, Burt, Butler, Cedar and 31 more	3 hr
Jul 17, 10:26 PM MDT	Mesoscale Discussion	SPC	Antelope, Boone, Burt, Cedar, Colfax, Cuming and 10 more	2 hr

Nearby

Mesoscale Discussions in Nebraska, 2015 Mesoscale Discussions in Colorado, 2015 Mesoscale Discussions in Wyoming, 2015 Every mesoscale discussion 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; radar from the NEXRAD Level II archive.