Alert archive / Colorado / Mesoscale Discussions in 2007

Mesoscale Discussion 1368

July 3, 200718 counties in Colorado; 15 counties in Kansas; 12 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2007, 1:48 PM MDT for 18 counties in Colorado; 15 counties in Kansas; 12 counties in Nebraska. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Jul 3, 2007, 1:48 PM MDT (19:48 UTC)
Expired: Jul 3, 2007, 3:45 PM MDT
In force: 117 min
Issued by: the Storm Prediction Center

All 45 counties

Adams County, CO, Arapahoe County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Otero County, CO, Phillips County, CO, Prowers County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Rawlins County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Chase County, NE, Cheyenne County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Kimball County, NE, Lincoln County, NE, Perkins County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 71 km from the middle of the area, began a volume at 19:50 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 478Jul 3, 2:25 PM MDT

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 7.8 hours before the alert went out and 230 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: 554 J/kg
Mixed-layer CIN: -647 J/kg
Mixed-layer LCL: 1266 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -116 m²/s²
0-3 km storm-relative helicity: -65 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
Jul 3, 2:25 PM MDT	Severe Thunderstorm Watch	SPC	Baca, Bent, Cheyenne, Crowley, Douglas, El Paso and 12 more	10 hr
Jul 2, 8:19 PM MDT	Mesoscale Discussion	SPC	Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 3 more	86 min
Jul 3, 2:36 PM MDT	Mesoscale Discussion	SPC	Cedar, Dakota, Dixon, Knox, Pierce, Thurston and 1 more	84 min
Jul 3, 2:59 PM MDT	Tornado Watch	SPC	Antelope, Boone, Burt, Cedar, Colfax, Cuming and 11 more	8 hr
Jul 3, 5:55 PM MDT	Mesoscale Discussion	SPC	Antelope, Boone, Burt, Cedar, Colfax, Cuming and 12 more	95 min

Nearby

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