Alert archive / Nebraska / Mesoscale Discussions in 2007

Mesoscale Discussion 1105

June 11, 2007Logan County, Phillips County, Sedgwick County, Colorado; 7 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2007, 9:15 PM MDT for Logan County, Phillips County, Sedgwick County, Colorado; 7 counties in Nebraska. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: Jun 11, 2007, 9:15 PM MDT (03:15 UTC)
Expired: Jun 11, 2007, 10:15 PM MDT
In force: 60 min
Issued by: the Storm Prediction Center

Counties Logan County, CO, Phillips County, CO, Sedgwick County, CO, Chase County, NE, Cheyenne County, NE, Deuel County, NE, Dundy County, NE, Hayes County, NE, Keith County, NE, Perkins County, NE

The radar

The Goodland radar (KGLD), 161 km from the middle of the area, began a volume at 03:18 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 00:00Z, 3.3 hours before the alert went out and 125 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: 68 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 3006 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: -18 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 11, 6:46 PM MDT	Mesoscale Discussion	SPC	Phillips, Sedgwick	89 min
Jun 12, 10:10 AM MDT	Mesoscale Discussion	SPC	Cheyenne, Kit Carson, Phillips, Sedgwick, Yuma	2 hr
Jun 12, 11:17 AM MDT	Tornado Watch	SPC	Cheyenne, Kit Carson, Phillips, Sedgwick, Yuma	7 hr
Jun 12, 1:47 PM MDT	Mesoscale Discussion	SPC	Kit Carson, Phillips, Sedgwick, Yuma	118 min
Jun 12, 2:52 PM MDT	Mesoscale Discussion	SPC	Arapahoe, Elbert, El Paso, Lincoln	113 min
Jun 12, 4:35 PM MDT	Mesoscale Discussion	SPC	Cheyenne, Kit Carson, Yuma	115 min

Nearby

Mesoscale Discussions in Nebraska, 2007 Mesoscale Discussions in Colorado, 2007 Every mesoscale discussion in 2007

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.