Alert archive / Nebraska / Mesoscale Discussions in 2004

Mesoscale Discussion 2352

October 22, 200417 counties in Nebraska; Bon Homme County, Charles Mix County, Gregory County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Oct 22, 2004, 2:02 PM CDT for 17 counties in Nebraska; Bon Homme County, Charles Mix County, Gregory County, South Dakota. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued: Oct 22, 2004, 2:02 PM CDT (19:02 UTC)
Expired: Oct 22, 2004, 4:00 PM CDT
In force: 118 min
Issued by: the Storm Prediction Center

Counties Antelope County, NE, Blaine County, NE, Boyd County, NE, Brown County, NE, Custer County, NE, Garfield County, NE, Greeley County, NE, Holt County, NE, Keya Paha County, NE, Knox County, NE, Logan County, NE, Loup County, NE, Pierce County, NE, Rock County, NE, Thomas County, NE, Valley County, NE, Wheeler County, NE, Bon Homme County, SD, Charles Mix County, SD, Gregory County, SD

The radar

The North Platte radar (KLNX), 110 km from the middle of the area, began a volume at 19:05 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

Omaha, NE (KOAX), launched 12:00Z, 7.0 hours before the alert went out and 262 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: 773 J/kg
Mixed-layer CIN: -308 J/kg
Mixed-layer LCL: 881 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 151 m²/s²
0-3 km storm-relative helicity: 150 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
Oct 22, 10:29 AM CDT	Mesoscale Discussion	SPC	Burt, Butler, Cass, Colfax, Dodge, Douglas and 16 more	2 hr
Oct 22, 4:26 PM CDT	Mesoscale Discussion	SPC	Cedar, Dakota, Dixon	3 hr

Nearby

Mesoscale Discussions in Nebraska, 2004 Mesoscale Discussions in South Dakota, 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.