Alert archive / Wyoming / Mesoscale Discussions in 2008
Mesoscale Discussion 1141
The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2008, 2:02 PM MDT for 7 counties in Nebraska; 5 counties in South Dakota; 9 counties in Wyoming. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Jun 1, 2008, 2:02 PM MDT (20:02 UTC)
- Expired
- Jun 1, 2008, 3:30 PM MDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
All 21 counties
Banner County, NE, Box Butte County, NE, Dawes County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sioux County, NE, Custer County, SD, Fall River County, SD, Lawrence County, SD, Oglala Lakota County, SD, Pennington County, SD, Albany County, WY, Campbell County, WY, Converse County, WY, Crook County, WY, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY, Weston County, WY
The radar
The Cheyenne radar (KCYS), 171 km from the middle of the area, began a volume at 20:06 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
Rapid City, SD (KUNR), launched 12:00Z, 8.0 hours before the alert went out and 199 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
- -156 J/kg
- Mixed-layer LCL
- 1913 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 54 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 1, 2:29 PM MDT | Tornado Watch | SPC | Arthur, Banner, Box Butte, Cherry, Cheyenne, Dawes and 12 more | 8 hr |
| Jun 1, 4:42 PM MDT | Mesoscale Discussion | SPC | Arthur, Banner, Blaine, Box Butte, Brown, Cherry and 17 more | 93 min |
Nearby
Mesoscale Discussions in Wyoming, 2008Mesoscale Discussions in Nebraska, 2008Mesoscale Discussions in South Dakota, 2008Every mesoscale discussion in 2008
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.