Alert archive / Colorado / Mesoscale Discussions in 2015

Mesoscale Discussion 1967

November 17, 201520 counties in Colorado; 9 counties in Kansas; 4 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Nov 17, 2015, 9:27 AM MST for 20 counties in Colorado; 9 counties in Kansas; 4 counties in Nebraska. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Nov 17, 2015, 9:27 AM MST (16:27 UTC)
Expired: Nov 17, 2015, 1:30 PM MST
In force: 4 hr
Issued by: the Storm Prediction Center

All 33 counties

Adams County, CO, Arapahoe County, CO, Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, Douglas County, CO, El Paso County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Las Animas County, CO, Lincoln County, CO, Morgan County, CO, Otero County, CO, Phillips County, CO, Prowers County, CO, Pueblo County, CO, Washington County, CO, Yuma County, CO, Cheyenne County, KS, Greeley County, KS, Hamilton County, KS, Logan County, KS, Rawlins County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Chase County, NE, Dundy County, NE, Hayes County, NE, Hitchcock County, NE

The radar

The Goodland radar (KGLD), 114 km from the middle of the area, began a volume at 16:28 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 12:00Z, 4.5 hours before the alert went out and 96 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: 504 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 161 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
Nov 16, 8:05 PM MST	Mesoscale Discussion	SPC	Adams, Arapahoe, Douglas, Elbert, El Paso	4 hr
Nov 17, 4:32 AM MST	Mesoscale Discussion	SPC	Arapahoe, Baca, Bent, Cheyenne, Crowley, Elbert and 10 more	4 hr
Nov 17, 2:43 PM MST	Mesoscale Discussion	SPC	Baca, Bent, Cheyenne, Kiowa, Prowers	4 hr
Nov 16, 6:43 PM MST	Mesoscale Discussion	SPC	Decatur, Gove, Graham, Greeley, Logan, Norton and 9 more	92 min
Nov 16, 7:07 PM MST	Mesoscale Discussion	SPC	Clark, Comanche, Edwards, Ford, Gray, Haskell and 7 more	83 min
Nov 16, 7:17 PM MST	Tornado Watch	SPC	Barber, Barton, Clark, Comanche, Edwards, Ellis and 22 more	7 hr
Nov 16, 9:19 PM MST	Mesoscale Discussion	SPC	Barber, Harper, Harvey, Kingman, McPherson, Pratt and 4 more	86 min
Nov 16, 11:58 PM MST	Mesoscale Discussion	SPC	Cowley, Harper, Harvey, Kingman, Reno, Rice and 2 more	2 hr
Nov 17, 12:48 AM MST	Severe Thunderstorm Watch	SPC	Chautauqua, Cowley, Labette, Montgomery	5 hr
Nov 16, 5:50 PM MST	Mesoscale Discussion	SPC	Custer, Garfield, Greeley, Howard, Nance, Sherman and 1 more	85 min

Nearby

Mesoscale Discussions in Colorado, 2015 Mesoscale Discussions in Kansas, 2015 Mesoscale Discussions in Nebraska, 2015 Every mesoscale discussion in 2015

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.