Alert archive / Nebraska / Mesoscale Discussions in 2011
Mesoscale Discussion 1252
The Storm Prediction Center issued this mesoscale discussion at Jun 16, 2011, 4:49 PM MDT for 4 states. It was in force for 86 min.
The area
The outline as issued.
The facts
- Issued
- Jun 16, 2011, 4:49 PM MDT (22:49 UTC)
- Expired
- Jun 16, 2011, 6:15 PM MDT
- In force
- 86 min
- Issued by
- the Storm Prediction Center
All 25 counties
Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Arthur County, NE, Banner County, NE, Box Butte County, NE, Cherry County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Garden County, NE, Grant County, NE, Hooker County, NE, Keith County, NE, Kimball County, NE, McPherson County, NE, Morrill County, NE, Scotts Bluff County, NE, Sheridan County, NE, Bennett County, SD, Todd County, SD, Laramie County, WY
The radar
The Cheyenne radar (KCYS), 160 km from the middle of the area, began a volume at 22:52 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, 10.8 hours before the alert went out and 174 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
- 2399 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -110 m²/s²
- 0-3 km storm-relative helicity
- 79 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, 12:37 PM MDT | Mesoscale Discussion | SPC | Jackson, Moffat, Rio Blanco, Routt | 113 min |
| Jun 16, 1:34 PM MDT | Mesoscale Discussion | SPC | Weld | 56 min |
| Jun 16, 1:55 PM MDT | Severe Thunderstorm Watch | SPC | Elbert, Larimer, Lincoln, Logan, Morgan, Phillips and 3 more | 9 hr |
| Jun 16, 5:18 PM MDT | Mesoscale Discussion | SPC | Kit Carson, Yuma | 87 min |
| Jun 16, 5:34 PM MDT | Severe Thunderstorm Watch | SPC | Cheyenne, Kit Carson, Yuma | 7 hr |
Nearby
Mesoscale Discussions in Nebraska, 2011Mesoscale Discussions in Colorado, 2011Mesoscale Discussions in South Dakota, 2011Every mesoscale discussion in 2011
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.