Alert archive / Colorado / Mesoscale Discussions in 2017

Mesoscale Discussion 1189

June 29, 201710 counties in Colorado; 8 counties in Kansas

The Storm Prediction Center issued this mesoscale discussion at Jun 29, 2017, 6:28 PM MDT for 10 counties in Colorado; 8 counties in Kansas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 29, 2017, 6:28 PM MDT (00:28 UTC)
Expired: Jun 29, 2017, 8:30 PM MDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Adams County, CO, Arapahoe County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Prowers County, CO, Grant County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Sherman County, KS, Stanton County, KS, Wallace County, KS, Wichita County, KS

The radar

The Pueblo radar (KPUX), 93 km from the middle of the area, began a volume at 00:32 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 (KDEN), launched 00:00Z, 0.5 hours before the alert went out and 146 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: 664 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 2847 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 176 m²/s²
0-3 km storm-relative helicity: 435 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.9

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 30, 12:54 PM MDT	Mesoscale Discussion	SPC	Costilla, Huerfano, Las Animas, Otero	2 hr
Jun 29, 7:37 PM MDT	Mesoscale Discussion	SPC	Barber, Barton, Clark, Comanche, Edwards, Ellis and 37 more	83 min
Jun 29, 8:02 PM MDT	Severe Thunderstorm Watch	SPC	Clay, Cloud, Jewell, Mitchell, Osborne, Ottawa and 5 more	5 hr
Jun 29, 9:56 PM MDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Barber, Barton, Butler, Chase and 41 more	6 hr
Jun 30, 12:32 AM MDT	Mesoscale Discussion	SPC	Allen, Anderson, Butler, Chase, Chautauqua, Coffey and 20 more	118 min
Jun 30, 12:35 AM MDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Jackson, Nemaha, Pottawatomie	2 hr
Jun 30, 1:42 AM MDT	Severe Thunderstorm Watch	SPC	Bourbon, Cherokee, Crawford	6 hr
Jun 30, 3:37 AM MDT	Mesoscale Discussion	SPC	Barber, Chautauqua, Comanche, Cowley, Harper, Labette and 2 more	113 min

Nearby

Mesoscale Discussions in Colorado, 2017 Mesoscale Discussions in Kansas, 2017 Every mesoscale discussion in 2017

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.