Alert archive / Nebraska / Mesoscale Discussions in 2004

Mesoscale Discussion 1177

June 10, 200414 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2004, 6:08 PM CDT for 14 counties in Nebraska. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Jun 10, 2004, 6:08 PM CDT (23:08 UTC)
Expired: Jun 10, 2004, 7:45 PM CDT
In force: 97 min
Issued by: the Storm Prediction Center

Counties Blaine County, NE, Boyd County, NE, Brown County, NE, Custer County, NE, Garfield County, NE, Greeley County, NE, Holt County, NE, Howard County, NE, Keya Paha County, NE, Loup County, NE, Rock County, NE, Sherman County, NE, Valley County, NE, Wheeler County, NE

The radar

The North Platte radar (KLNX), 77 km from the middle of the area, began a volume at 23:10 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, 11.1 hours before the alert went out and 140 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: 564 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 499 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 235 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
Jun 9, 7:40 PM CDT	Severe Thunderstorm Watch	SPC	Arthur, Box Butte, Chase, Cheyenne, Deuel, Dundy and 12 more	4 hr
Jun 9, 10:37 PM CDT	Mesoscale Discussion	SPC	Arthur, Chase, Dundy, Frontier, Garden, Grant and 9 more	53 min
Jun 10, 1:14 PM CDT	Mesoscale Discussion	SPC	Box Butte, Cherry, Dawes, Garden, Grant, Morrill and 3 more	91 min
Jun 10, 2:00 PM CDT	Tornado Watch	SPC	Arthur, Box Butte, Cherry, Cheyenne, Dawes, Deuel and 9 more	7 hr
Jun 10, 4:55 PM CDT	Tornado Watch	SPC	Dawson, Franklin, Frontier, Furnas, Gosper, Harlan and 6 more	5 hr
Jun 10, 4:59 PM CDT	Mesoscale Discussion	SPC	Arthur, Box Butte, Cherry, Cheyenne, Dawes, Deuel and 10 more	91 min
Jun 10, 6:25 PM CDT	Tornado Watch	SPC	Blaine, Boyd, Brown, Custer, Garfield, Greeley and 11 more	5 hr

Nearby

Mesoscale Discussions in Nebraska, 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.