Alert archive / Nebraska / Mesoscale Discussions in 2004

Mesoscale Discussion 1579

July 9, 20046 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jul 9, 2004, 12:03 AM MDT for 6 counties in Nebraska. It was in force for 57 min.

The area

The outline as issued.

The facts

Issued: Jul 9, 2004, 12:03 AM MDT (06:03 UTC)
Expired: Jul 9, 2004, 1:00 AM MDT
In force: 57 min
Issued by: the Storm Prediction Center

Counties Chase County, NE, Dundy County, NE, Frontier County, NE, Hayes County, NE, Hitchcock County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 131 km from the middle of the area, began a volume at 06:06 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 6.1 hours before the alert went out and 87 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: 1868 J/kg
Mixed-layer CIN: -201 J/kg
Mixed-layer LCL: 1853 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 188 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -2.1

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
Jul 8, 7:05 PM MDT	Severe Thunderstorm Watch	SPC	Blaine, Brown, Chase, Custer, Dawson, Frontier and 13 more	6 hr
Jul 8, 8:45 PM MDT	Severe Thunderstorm Watch	SPC	Adams, Buffalo, Butler, Clay, Franklin, Furnas and 13 more	6 hr
Jul 8, 9:58 PM MDT	Mesoscale Discussion	SPC	Adams, Buffalo, Butler, Clay, Dawson, Franklin and 18 more	92 min
Jul 8, 11:19 PM MDT	Mesoscale Discussion	SPC	Gage, Jefferson, Nuckolls, Pawnee, Saline, Thayer	56 min
Jul 8, 11:45 PM MDT	Severe Thunderstorm Watch	SPC	Adams, Cass, Clay, Fillmore, Gage, Hamilton and 15 more	4 hr
Jul 9, 1:46 AM MDT	Mesoscale Discussion	SPC	Butler, Cass, Fillmore, Gage, Jefferson, Johnson and 10 more	89 min
Jul 9, 1:02 PM MDT	Mesoscale Discussion	SPC	Banner, Kimball, Scotts Bluff	118 min
Jul 9, 5:59 PM MDT	Mesoscale Discussion	SPC	Arthur, Banner, Box Butte, Cheyenne, Dawes, Deuel and 7 more	106 min

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.