Alert archive / Colorado / Mesoscale Discussions in 2012
Mesoscale Discussion 1090
The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2012, 6:47 PM MDT for 10 counties in Colorado; 8 counties in Nebraska; Goshen County, Laramie County, Platte County, Wyoming. It was in force for 58 min.
The area
The outline as issued.
The facts
- Issued
- Jun 6, 2012, 6:47 PM MDT (00:47 UTC)
- Expired
- Jun 6, 2012, 7:45 PM MDT
- In force
- 58 min
- Issued by
- the Storm Prediction Center
All 21 counties
Adams County, CO, Arapahoe County, CO, Broomfield County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Logan County, CO, Morgan County, CO, Washington 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), 67 km from the middle of the area, began a volume at 00:49 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, 0.8 hours before the alert went out and 130 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
- 859 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 2447 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
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 6, 8:37 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Broomfield, Denver, Douglas, Elbert and 2 more | 23 min |
| Jun 7, 10:59 AM MDT | Mesoscale Discussion | SPC | Larimer, Weld | 91 min |
| Jun 7, 11:46 AM MDT | Tornado Watch | SPC | Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 8 more | 10 hr |
| Jun 7, 1:59 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Broomfield, Denver, Morgan, Weld | 91 min |
| Jun 7, 5:52 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Boulder, Broomfield, Crowley, Denver and 11 more | 53 min |
Nearby
Mesoscale Discussions in Colorado, 2012Mesoscale Discussions in Nebraska, 2012Mesoscale Discussions in Wyoming, 2012Every mesoscale discussion in 2012
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.