Alert archive / Nebraska / Mesoscale Discussions in 2005

Mesoscale Discussion 1203

June 6, 20055 states

The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2005, 1:22 PM MDT for 5 states. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued: Jun 6, 2005, 1:22 PM MDT (19:22 UTC)
Expired: Jun 6, 2005, 3:15 PM MDT
In force: 113 min
Issued by: the Storm Prediction Center

All 65 counties

Adams County, CO, Arapahoe County, CO, Cheyenne County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Prowers County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Logan County, KS, Rawlins County, KS, Scott County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Arthur County, NE, Banner County, NE, Box Butte County, NE, Chase County, NE, Cherry County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Dundy County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Hitchcock County, NE, Hooker County, NE, Keith County, NE, Kimball County, NE, Lincoln County, NE, McPherson County, NE, Morrill County, NE, Perkins County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Bennett County, SD, Custer County, SD, Fall River County, SD, Haakon County, SD, Jackson County, SD, Meade County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Perkins County, SD, Todd County, SD, Ziebach County, SD, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY

The radar

The North Platte radar (KLNX), 174 km from the middle of the area, began a volume at 19:22 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.

Tornado Watch 420Jun 6, 2:00 PM MDT

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 7.4 hours before the alert went out and 187 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: 289 J/kg
Mixed-layer CIN: -238 J/kg
Mixed-layer LCL: 1780 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 125 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 6, 2:00 PM MDT	Tornado Watch	SPC	Phillips, Sedgwick, Yuma	8 hr
Jun 6, 4:58 PM MDT	Mesoscale Discussion	SPC	Phillips, Sedgwick	92 min
Jun 6, 1:16 AM MDT	Mesoscale Discussion	SPC	Barber, Butler, Chautauqua, Cherokee, Comanche, Cowley and 13 more	89 min
Jun 6, 11:29 AM MDT	Mesoscale Discussion	SPC	Custer, Lawrence	2 hr
Jun 6, 12:20 PM MDT	Tornado Watch	SPC	Big Horn, Campbell, Crook, Johnson, Sheridan, Washakie and 1 more	6 hr

Nearby

Mesoscale Discussions in Nebraska, 2005 Mesoscale Discussions in Colorado, 2005 Mesoscale Discussions in South Dakota, 2005 Every mesoscale discussion in 2005

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.