Alert archive / Colorado / Mesoscale Discussions in 2007

Mesoscale Discussion 1659

August 6, 200710 counties in Colorado; 7 counties in Kansas; 10 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Aug 6, 2007, 1:55 AM MDT for 10 counties in Colorado; 7 counties in Kansas; 10 counties in Nebraska. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: Aug 6, 2007, 1:55 AM MDT (07:55 UTC)
Expired: Aug 6, 2007, 3:30 AM MDT
In force: 95 min
Issued by: the Storm Prediction Center

All 27 counties

Cheyenne 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, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Chase County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Lincoln County, NE, Perkins County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 88 km from the middle of the area, began a volume at 07:55 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 7.9 hours before the alert went out and 193 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: 585 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 2222 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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
Aug 6, 4:12 PM MDT	Mesoscale Discussion	SPC	Bent, Cheyenne, Crowley, Douglas, Elbert, El Paso and 8 more	93 min
Aug 5, 10:44 PM MDT	Mesoscale Discussion	SPC	Atchison, Brown, Clay, Cloud, Doniphan, Jackson and 6 more	91 min
Aug 6, 6:39 AM MDT	Mesoscale Discussion	SPC	Decatur, Norton	96 min
Aug 6, 10:08 AM MDT	Mesoscale Discussion	SPC	Burt, Cuming, Dakota, Dixon, Dodge, Douglas and 2 more	97 min

Nearby

Mesoscale Discussions in Colorado, 2007 Mesoscale Discussions in Nebraska, 2007 Mesoscale Discussions in Kansas, 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.