Alert archive / Colorado / Mesoscale Discussions in 2013

Mesoscale Discussion 955

June 4, 201312 counties in Colorado; Hamilton County, Morton County, Stanton County, Kansas; Cimarron County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jun 4, 2013, 2:40 PM MDT for 12 counties in Colorado; Hamilton County, Morton County, Stanton County, Kansas; Cimarron County, Oklahoma. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: Jun 4, 2013, 2:40 PM MDT (20:40 UTC)
Expired: Jun 4, 2013, 4:15 PM MDT
In force: 95 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

Counties Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, El Paso County, CO, Elbert County, CO, Kiowa County, CO, Las Animas County, CO, Lincoln County, CO, Otero County, CO, Prowers County, CO, Pueblo County, CO, Hamilton County, KS, Morton County, KS, Stanton County, KS, Cimarron County, OK

The radar

The Pueblo radar (KPUX), 86 km from the middle of the area, began a volume at 20:43 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 276Jun 4, 3:55 PM MDT

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 8.7 hours before the alert went out and 218 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: 794 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: -32 m²/s²
0-3 km storm-relative helicity: 230 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
Jun 4, 3:51 PM MDT	Severe Thunderstorm Watch	SPC	Baca, Bent, Cheyenne, Crowley, Elbert, Kiowa and 7 more	7 hr
Jun 3, 9:08 PM MDT	Mesoscale Discussion	SPC	Clark, Comanche, Meade, Morton, Seward, Stevens	67 min
Jun 3, 9:41 PM MDT	Severe Thunderstorm Watch	SPC	Beckham, Blaine, Caddo, Comanche, Custer, Dewey and 9 more	5 hr
Jun 4, 12:22 AM MDT	Mesoscale Discussion	SPC	Beckham, Blaine, Caddo, Custer, Dewey, Ellis and 3 more	83 min
Jun 4, 2:30 AM MDT	Mesoscale Discussion	SPC	Caddo, Canadian, Cleveland, Comanche, Garvin, Grady and 11 more	90 min
Jun 4, 2:44 AM MDT	Severe Thunderstorm Watch	SPC	Atoka, Bryan, Caddo, Canadian, Carter, Cleveland and 25 more	5 hr
Jun 4, 5:50 AM MDT	Mesoscale Discussion	SPC	Carter, Coal, Johnston, Love, Marshall	55 min
Jun 4, 4:06 PM MDT	Mesoscale Discussion	SPC	Beaver, Beckham, Comanche, Cotton, Custer, Dewey and 12 more	54 min
Jun 4, 4:39 PM MDT	Severe Thunderstorm Watch	SPC	Beaver, Beckham, Cimarron, Comanche, Cotton, Custer and 12 more	6 hr

Nearby

Mesoscale Discussions in Colorado, 2013 Mesoscale Discussions in Kansas, 2013 Mesoscale Discussions in Oklahoma, 2013 Every mesoscale discussion in 2013

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.