Alert archive / Nebraska / Mesoscale Discussions in 2013
Mesoscale Discussion 1108
The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2013, 1:06 PM MDT for 4 counties in Colorado; 13 counties in Nebraska; Goshen County, Laramie County, Platte County, Wyoming. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2013, 1:06 PM MDT (19:06 UTC)
- Expired
- Jun 17, 2013, 2:30 PM MDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
Counties Logan County, CO, Phillips County, CO, Sedgwick County, CO, Weld County, CO, Arthur County, NE, Banner County, NE, Box Butte 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, Sioux County, NE, Goshen County, WY, Laramie County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 114 km from the middle of the area, began a volume at 19:08 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 7.1 hours before the alert went out and 206 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2430 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- -12 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 17, 1:38 PM MDT | Mesoscale Discussion | SPC | Bent, Cheyenne, Crowley, Elbert, Kiowa, Kit Carson and 6 more | 97 min |
| Jun 17, 2:21 PM MDT | Severe Thunderstorm Watch | SPC | Adams, Arapahoe, Baca, Bent, Boulder, Broomfield and 20 more | 9 hr |
| Jun 17, 5:09 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Baca, Bent, Cheyenne, Crowley and 13 more | 66 min |
Nearby
Mesoscale Discussions in Nebraska, 2013Mesoscale Discussions in Colorado, 2013Mesoscale Discussions in Wyoming, 2013Every mesoscale discussion 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.