Alert archive / Nebraska / Mesoscale Discussions in 2015
Mesoscale Discussion 1053
The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2015, 4:20 PM MDT for Logan County, Morgan County, Weld County, Colorado; 8 counties in Nebraska; Goshen County, Laramie County, Platte County, Wyoming. It was in force for 55 min.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2015, 4:20 PM MDT (22:20 UTC)
- Expired
- Jun 17, 2015, 5:15 PM MDT
- In force
- 55 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
Counties Logan County, CO, Morgan County, CO, Weld County, CO, Banner County, NE, Box Butte County, NE, Cheyenne County, NE, Dawes County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sioux County, NE, Goshen County, WY, Laramie County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 74 km from the middle of the area, began a volume at 22:21 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 (KDEN), launched 12:00Z, 10.3 hours before the alert went out and 195 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.
- Mixed-layer CAPE
- 2 J/kg
- Mixed-layer CIN
- -439 J/kg
- Mixed-layer LCL
- 1484 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 8:00 PM MDT | Mesoscale Discussion | SPC | Cheyenne, Crowley, Kiowa, Kit Carson, Lincoln, Yuma | 90 min |
| Jun 16, 9:28 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Cheyenne, Elbert, Kit Carson, Lincoln and 7 more | 62 min |
| Jun 16, 6:34 PM MDT | Mesoscale Discussion | SPC | Arthur, Blaine, Brown, Chase, Cherry, Custer and 17 more | 86 min |
| Jun 16, 10:23 PM MDT | Mesoscale Discussion | SPC | Adams, Blaine, Buffalo, Clay, Custer, Dawson and 23 more | 37 min |
| Jun 17, 2:32 PM MDT | Mesoscale Discussion | SPC | Campbell, Crook, Johnson, Niobrara, Sheridan, Weston | 118 min |
| Jun 17, 4:40 PM MDT | Severe Thunderstorm Watch | SPC | Sheridan | 5 hr |
| Jun 17, 5:39 PM MDT | Severe Thunderstorm Watch | SPC | Campbell, Crook, Weston | 9 hr |
Nearby
Mesoscale Discussions in Nebraska, 2015Mesoscale Discussions in Colorado, 2015Mesoscale Discussions in Wyoming, 2015Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.