Alert archive / Nebraska / Mesoscale Discussions in 2014

Mesoscale Discussion 1153

June 25, 20144 states

The Storm Prediction Center issued this mesoscale discussion at Jun 25, 2014, 5:07 PM MDT for 4 states. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued: Jun 25, 2014, 5:07 PM MDT (23:07 UTC)
Expired: Jun 25, 2014, 6:30 PM MDT
In force: 83 min
Issued by: the Storm Prediction Center

All 27 counties

Carter County, MT, Custer County, MT, Powder River County, MT, Banner County, NE, Box Butte County, NE, Cheyenne County, NE, Dawes County, NE, Garden County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Butte County, SD, Custer County, SD, Fall River County, SD, Haakon County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Oglala Lakota County, SD, Pennington County, SD, Ziebach County, SD, Crook County, WY, Goshen County, WY, Niobrara County, WY, Weston County, WY

The radar

The Rapid City radar (KUDX), 98 km from the middle of the area, began a volume at 23:07 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

Rapid City, SD (KRAP), launched 12:00Z, 11.1 hours before the alert went out and 94 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: 9 J/kg
Mixed-layer CIN: -277 J/kg
Mixed-layer LCL: 1027 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 16 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 25, 1:50 PM MDT	Severe Thunderstorm Watch	SPC	Carter, Custer, Fallon, Powder River, Rosebud	7 hr
Jun 25, 12:58 PM MDT	Mesoscale Discussion	SPC	Arthur, Banner, Box Butte, Cherry, Cheyenne, Dawes and 9 more	2 hr
Jun 25, 5:51 PM MDT	Mesoscale Discussion	SPC	Chase, Dundy, Hayes, Hitchcock, Keith, Perkins	84 min
Jun 24, 7:13 PM MDT	Mesoscale Discussion	SPC	Laramie	92 min

Nearby

Mesoscale Discussions in Nebraska, 2014 Mesoscale Discussions in South Dakota, 2014 Mesoscale Discussions in Wyoming, 2014 Every mesoscale discussion in 2014

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.