Alert archive / Colorado / Mesoscale Discussions in 2014

Mesoscale Discussion 1627

August 27, 201413 counties in Colorado; 13 counties in Kansas; 8 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Aug 27, 2014, 1:37 PM MDT for 13 counties in Colorado; 13 counties in Kansas; 8 counties in Nebraska. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued: Aug 27, 2014, 1:37 PM MDT (19:37 UTC)
Expired: Aug 27, 2014, 3:30 PM MDT
In force: 113 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 34 counties

Adams County, CO, Arapahoe County, CO, Denver County, CO, Elbert County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Graham County, KS, Logan County, KS, Ness County, KS, Norton County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Chase County, NE, Cheyenne County, NE, Deuel County, NE, Dundy County, NE, Hayes County, NE, Hitchcock County, NE, Perkins County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 74 km from the middle of the area, began a volume at 19:39 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, 7.6 hours before the alert went out and 73 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: 1 J/kg
Mixed-layer CIN: -181 J/kg
Mixed-layer LCL: 1491 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 44 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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Nearby

Mesoscale Discussions in Colorado, 2014 Mesoscale Discussions in Kansas, 2014 Mesoscale Discussions in Nebraska, 2014 Every mesoscale discussion in 2014

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.