Alert archive / Nebraska / Mesoscale Discussions in 2004

Mesoscale Discussion 2208

September 14, 20044 states

The Storm Prediction Center issued this mesoscale discussion at Sep 14, 2004, 5:44 PM MDT for 4 states. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued: Sep 14, 2004, 5:44 PM MDT (23:44 UTC)
Expired: Sep 14, 2004, 7:15 PM MDT
In force: 91 min
Issued by: the Storm Prediction Center

All 71 counties

Adams County, CO, Arapahoe County, CO, Broomfield County, CO, Denver 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, Norton County, KS, Phillips County, KS, Rawlins County, KS, Smith County, KS, Adams County, NE, Arthur County, NE, Banner County, NE, Blaine County, NE, Boone County, NE, Buffalo County, NE, Chase County, NE, Cheyenne County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Deuel County, NE, Dundy County, NE, Fillmore County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garden County, NE, Garfield County, NE, Gosper County, NE, Grant County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Hooker County, NE, Howard County, NE, Kearney County, NE, Keith County, NE, Kimball County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, Madison County, NE, McPherson County, NE, Merrick County, NE, Morrill County, NE, Nance County, NE, Nuckolls County, NE, Perkins County, NE, Phelps County, NE, Platte County, NE, Polk County, NE, Red Willow County, NE, Sherman County, NE, Thayer County, NE, Thomas County, NE, Valley County, NE, Webster County, NE, Wheeler County, NE, York County, NE, Laramie County, WY

The radar

The North Platte radar (KLNX), 147 km from the middle of the area, began a volume at 23:47 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.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.7 hours before the alert went out and 80 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1340 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: -141 m²/s²
0-3 km storm-relative helicity: 185 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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
Sep 14, 1:49 PM MDT	Mesoscale Discussion	SPC	Adams, Arapahoe, Broomfield, Denver, Elbert, Kit Carson and 8 more	116 min
Sep 14, 2:20 PM MDT	Severe Thunderstorm Watch	SPC	Adams, Arapahoe, Broomfield, Denver, Logan, Morgan and 5 more	7 hr
Sep 13, 7:59 PM MDT	Mesoscale Discussion	SPC	Decatur	61 min
Sep 14, 12:47 PM MDT	Mesoscale Discussion	SPC	Adams, Buffalo, Burt, Butler, Cass, Clay and 22 more	88 min
Sep 14, 1:45 PM MDT	Severe Thunderstorm Watch	SPC	Burt, Butler, Cass, Colfax, Cuming, Dakota and 13 more	7 hr
Sep 14, 4:14 PM MDT	Mesoscale Discussion	SPC	Burt, Butler, Cass, Colfax, Cuming, Dakota and 13 more	2 hr

Nearby

Mesoscale Discussions in Nebraska, 2004 Mesoscale Discussions in Colorado, 2004 Mesoscale Discussions in Kansas, 2004 Every mesoscale discussion in 2004

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.