Alert archive / Colorado / Mesoscale Discussions in 2017

Mesoscale Discussion 1459

August 8, 201710 counties in Colorado; 7 counties in New Mexico; Cimarron County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Aug 8, 2017, 2:13 PM MDT for 10 counties in Colorado; 7 counties in New Mexico; Cimarron County, Oklahoma. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Aug 8, 2017, 2:13 PM MDT (20:13 UTC)
Expired: Aug 8, 2017, 4:15 PM MDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 60%

Counties Baca County, CO, Bent County, CO, Crowley County, CO, El Paso County, CO, Huerfano County, CO, Kiowa County, CO, Las Animas County, CO, Lincoln County, CO, Otero County, CO, Pueblo County, CO, Colfax County, NM, Guadalupe County, NM, Harding County, NM, Mora County, NM, San Miguel County, NM, Santa Fe County, NM, Union County, NM, Cimarron County, OK

The radar

The Pueblo radar (KPUX), 135 km from the middle of the area, began a volume at 20:16 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.

Severe Thunderstorm Watch 442Aug 8, 2:45 PM MDT

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 8.2 hours before the alert went out and 309 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: 779 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: -15 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Aug 8, 2:42 PM MDT	Severe Thunderstorm Watch	SPC	Bent, Crowley, Huerfano, Las Animas, Otero, Pueblo	5 hr
Aug 8, 5:07 PM MDT	Mesoscale Discussion	SPC	Crowley, Custer, Huerfano, Las Animas, Otero, Pueblo	53 min

Nearby

Mesoscale Discussions in Colorado, 2017 Mesoscale Discussions in New Mexico, 2017 Mesoscale Discussions in Oklahoma, 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.