Alert archive / Colorado / Mesoscale Discussions in 2011

Mesoscale Discussion 1436

June 28, 20116 states

The Storm Prediction Center issued this mesoscale discussion at Jun 28, 2011, 2:29 PM MDT for 6 states. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
Jun 28, 2011, 2:29 PM MDT (20:29 UTC)
Expired
Jun 28, 2011, 4:00 PM MDT
In force
91 min
Issued by
the Storm Prediction Center
All 35 counties

Adams County, CO, Arapahoe County, CO, Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, El Paso County, CO, Elbert County, CO, Huerfano County, CO, Kiowa County, CO, Kit Carson County, CO, Las Animas County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Otero County, CO, Phillips County, CO, Prowers County, CO, Pueblo County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, KS, Greeley County, KS, Hamilton County, KS, Morton County, KS, Sherman County, KS, Stanton County, KS, Wallace County, KS, Wichita County, KS, Dundy County, NE, Colfax County, NM, Union County, NM, Cimarron County, OK, Dallam County, TX

The radar

The Pueblo radar (KPUX), 23 km from the middle of the area, began a volume at 20:30 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 (KDNR), launched 12:00Z, 8.5 hours before the alert went out and 159 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-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2011-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2011-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 159 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
2151 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
159 m²/s²
0-3 km storm-relative helicity
179 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.

IssuedProductOfficeCountiesLasted
Jun 28, 10:42 AM MDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, McCurtain, Pushmataha93 min
Jun 28, 10:51 AM MDTSevere Thunderstorm WatchSPCMcCurtain7 hr
Jun 28, 2:09 PM MDTMesoscale DiscussionSPCLeFlore, McCurtain, Sequoyah96 min
Jun 28, 2:53 PM MDTSevere Thunderstorm WatchSPCAtoka, Bryan, Carter, Choctaw, Coal, Johnston and 8 more7 hr
Jun 28, 5:09 PM MDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, Coal, Johnston, Love and 5 more96 min

Nearby

Mesoscale Discussions in Colorado, 2011Mesoscale Discussions in Kansas, 2011Mesoscale Discussions in New Mexico, 2011Every mesoscale discussion in 2011

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.