Alert archive / Wyoming / Mesoscale Discussions in 2008

Mesoscale Discussion 2148

August 24, 20084 states

The Storm Prediction Center issued this mesoscale discussion at Aug 24, 2008, 1:48 PM MDT for 4 states. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Aug 24, 2008, 1:48 PM MDT (19:48 UTC)
Expired: Aug 24, 2008, 3:45 PM MDT
In force: 117 min
Issued by: the Storm Prediction Center

All 28 counties

Adams County, CO, Boulder County, CO, Broomfield County, CO, Denver County, CO, Gilpin County, CO, Larimer County, CO, Morgan County, CO, Weld County, CO, Banner County, NE, Box Butte County, NE, Dawes County, NE, Kimball County, NE, Scotts Bluff County, NE, Sioux County, NE, Custer County, SD, Fall River County, SD, Lawrence County, SD, Meade 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), 165 km from the middle of the area, began a volume at 19:50 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 12:00Z, 7.8 hours before the alert went out and 318 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2411 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 22 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 23, 10:42 PM MDT	Mesoscale Discussion	SPC	Adams, Buffalo, Clay, Dawson, Fillmore, Franklin and 12 more	3 hr

Nearby

Mesoscale Discussions in Wyoming, 2008 Mesoscale Discussions in Colorado, 2008 Mesoscale Discussions in Nebraska, 2008 Every 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.