Alert archive / Wyoming / Mesoscale Discussions in 2008

Mesoscale Discussion 1079

May 29, 20084 states

The Storm Prediction Center issued this mesoscale discussion at May 29, 2008, 11:24 AM MDT for 4 states. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: May 29, 2008, 11:24 AM MDT (17:24 UTC)
Expired: May 29, 2008, 1:00 PM MDT
In force: 96 min
Issued by: the Storm Prediction Center

Counties Logan County, CO, Weld County, CO, Powder River County, MT, Banner County, NE, Cheyenne County, NE, Kimball County, NE, Scotts Bluff County, NE, Campbell County, WY, Converse County, WY, Goshen County, WY, Laramie County, WY, Platte County, WY

The radar

The Rapid City radar (KUDX), 202 km from the middle of the area, began a volume at 17:27 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.

Tornado Watch 384May 29, 12:35 PM MDT

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 5.4 hours before the alert went out and 196 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: 878 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 86 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
May 29, 12:10 PM MDT	Mesoscale Discussion	SPC	Baca, Prowers	65 min
May 29, 12:33 PM MDT	Tornado Watch	SPC	Logan, Phillips, Sedgwick, Washington, Yuma	7 hr
May 29, 1:12 PM MDT	Severe Thunderstorm Watch	SPC	Baca, Bent, Cheyenne, Kiowa, Kit Carson, Las Animas and 2 more	10 hr
May 29, 5:49 PM MDT	Mesoscale Discussion	SPC	Baca, Prowers	56 min
May 28, 10:41 PM MDT	Mesoscale Discussion	SPC	Antelope, Arthur, Blaine, Boyd, Brown, Cedar and 15 more	94 min
May 29, 4:32 AM MDT	Mesoscale Discussion	SPC	Antelope, Boone, Burt, Butler, Cass, Cedar and 29 more	118 min
May 29, 12:44 PM MDT	Mesoscale Discussion	SPC	Blaine, Custer, Dawson, Frontier, Furnas, Gosper and 9 more	61 min
May 29, 1:30 PM MDT	Tornado Watch PDS	SPC	Adams, Antelope, Blaine, Boone, Boyd, Brown and 44 more	8 hr
May 29, 2:55 PM MDT	Mesoscale Discussion	SPC	Antelope, Blaine, Boyd, Brown, Cherry, Garfield and 10 more	95 min
May 29, 4:07 PM MDT	Mesoscale Discussion	SPC	Dakota, Dixon	23 min
May 29, 4:26 PM MDT	Tornado Watch	SPC	Dakota, Dixon	6 hr
May 29, 4:55 PM MDT	Mesoscale Discussion	SPC	Adams, Antelope, Blaine, Boone, Boyd, Brown and 63 more	35 min
May 29, 5:43 PM MDT	Tornado Watch	SPC	Burt, Butler, Cass, Colfax, Cuming, Dodge and 15 more	7 hr

Nearby

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