Alert archive / Colorado / Mesoscale Discussions in 2012
Mesoscale Discussion 1172
The Storm Prediction Center issued this mesoscale discussion at Jun 15, 2012, 12:54 PM MDT for 18 counties in Colorado; 9 counties in Nebraska. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- Jun 15, 2012, 12:54 PM MDT (18:54 UTC)
- Expired
- Jun 15, 2012, 2:30 PM MDT
- In force
- 96 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 27 counties
Adams County, CO, Arapahoe County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Otero County, CO, Phillips County, CO, Prowers County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Banner County, NE, Box Butte County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sioux County, NE
The radar
The Denver radar (KFTG), 97 km from the middle of the area, began a volume at 18:57 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, 6.9 hours before the alert went out and 39 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
- 7 J/kg
- Mixed-layer CIN
- -278 J/kg
- Mixed-layer LCL
- 1830 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -227 m²/s²
- 0-3 km storm-relative helicity
- 9 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 14, 7:12 PM MDT | Mesoscale Discussion | SPC | Baca, Prowers | 93 min |
| Jun 15, 1:35 PM MDT | Severe Thunderstorm Watch | SPC | Adams, Arapahoe, Denver, Douglas, Elbert, Lincoln and 4 more | 7 hr |
| Jun 15, 3:59 PM MDT | Mesoscale Discussion | SPC | Cherry, Sheridan | 91 min |
| Jun 15, 4:14 PM MDT | Severe Thunderstorm Watch | SPC | Brown, Cherry, Keya Paha, Sheridan | 6 hr |
Nearby
Mesoscale Discussions in Colorado, 2012Mesoscale Discussions in Nebraska, 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.