Alert archive / Wyoming / Mesoscale Discussions in 2004

Mesoscale Discussion 634

May 10, 2004Morgan County, Weld County, Colorado; 4 counties in Nebraska; 10 counties in Wyoming

The Storm Prediction Center issued this mesoscale discussion at May 10, 2004, 1:04 PM MDT for Morgan County, Weld County, Colorado; 4 counties in Nebraska; 10 counties in Wyoming. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 10, 2004, 1:04 PM MDT (19:04 UTC)
Expired: May 10, 2004, 3:30 PM MDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Morgan County, CO, Weld County, CO, Banner County, NE, Kimball County, NE, Scotts Bluff County, NE, Sioux County, NE, Albany County, WY, Campbell County, WY, Converse County, WY, Crook County, WY, Goshen County, WY, Johnson County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY, Weston County, WY

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, 7.1 hours before the alert went out and 219 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: 1496 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 177 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 9, 6:55 PM MDT	Severe Thunderstorm Watch	SPC	Kit Carson	4 hr
May 10, 3:00 PM MDT	Severe Thunderstorm Watch	SPC	Adams, Arapahoe, Bent, Cheyenne, Crowley, Denver and 16 more	5 hr
May 10, 5:10 PM MDT	Mesoscale Discussion	SPC	Adams, Arapahoe, Bent, Cheyenne, Crowley, Denver and 16 more	95 min
May 9, 8:43 PM MDT	Mesoscale Discussion	SPC	Adams, Buffalo, Butler, Clay, Colfax, Cuming and 21 more	2 hr
May 9, 10:28 PM MDT	Mesoscale Discussion	SPC	Adams, Buffalo, Clay, Fillmore, Franklin, Hall and 6 more	62 min
May 10, 2:35 PM MDT	Severe Thunderstorm Watch	SPC	Scotts Bluff	5 hr
May 10, 4:43 PM MDT	Mesoscale Discussion	SPC	Campbell, Converse, Crook, Goshen, Johnson, Niobrara and 3 more	2 hr

Nearby

Mesoscale Discussions in Wyoming, 2004 Mesoscale Discussions in Nebraska, 2004 Mesoscale Discussions in Colorado, 2004 Every mesoscale discussion in 2004

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.