Alert archive / Colorado / Mesoscale Discussions in 2003

Mesoscale Discussion 2109

August 6, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Aug 6, 2003, 2:12 PM MDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Aug 6, 2003, 2:12 PM MDT (20:12 UTC)
Expired: Aug 6, 2003, 4:15 PM MDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 35 counties

Cheyenne County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Prowers County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Logan County, KS, Sherman County, KS, Stanton County, KS, Wallace County, KS, Wichita County, KS, Banner County, NE, Cheyenne County, NE, Dundy County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sioux County, NE, Campbell County, WY, Converse County, WY, Goshen County, WY, Johnson County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 8.2 hours before the alert went out and 121 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: 3 J/kg
Mixed-layer CIN: -426 J/kg
Mixed-layer LCL: 2113 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 38 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 5, 7:15 PM MDT	Severe Thunderstorm Watch	SPC	Allen, Bourbon, Chautauqua, Cherokee, Crawford, Elk and 6 more	4 hr
Aug 5, 8:30 PM MDT	Mesoscale Discussion	SPC	Allen, Bourbon, Chautauqua, Cherokee, Crawford, Elk and 6 more	90 min

Nearby

Mesoscale Discussions in Colorado, 2003 Mesoscale Discussions in Kansas, 2003 Mesoscale Discussions in Nebraska, 2003 Every mesoscale discussion in 2003

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.