Alert archive / Nebraska / Mesoscale Discussions in 2004

Mesoscale Discussion 1489

July 3, 20049 counties in Kansas; 27 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2004, 6:27 PM CDT for 9 counties in Kansas; 27 counties in Nebraska. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued: Jul 3, 2004, 6:27 PM CDT (23:27 UTC)
Expired: Jul 3, 2004, 7:30 PM CDT
In force: 63 min
Issued by: the Storm Prediction Center

All 36 counties

Cheyenne County, KS, Decatur County, KS, Graham County, KS, Jewell County, KS, Norton County, KS, Phillips County, KS, Rawlins County, KS, Sheridan County, KS, Smith County, KS, Adams County, NE, Blaine County, NE, Buffalo County, NE, Custer County, NE, Dawson County, NE, Dundy County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Howard County, NE, Kearney County, NE, Logan County, NE, Loup County, NE, Nuckolls County, NE, Phelps County, NE, Red Willow County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Webster County, NE

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, 11.5 hours before the alert went out and 84 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: 75 J/kg
Mixed-layer CIN: -414 J/kg
Mixed-layer LCL: 1760 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 113 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
Jul 2, 7:51 PM CDT	Mesoscale Discussion	SPC	Grant, Hamilton, Kearny, Morton, Stanton, Stevens	84 min
Jul 2, 9:19 PM CDT	Mesoscale Discussion	SPC	Clark, Finney, Grant, Gray, Hamilton, Haskell and 6 more	56 min
Jul 3, 3:50 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Gove, Logan, Rawlins, Sheridan and 3 more	115 min
Jul 3, 4:30 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Decatur, Rawlins, Sheridan, Sherman, Thomas	7 hr
Jul 3, 6:55 PM CDT	Severe Thunderstorm Watch	SPC	Cloud, Graham, Jewell, Mitchell, Norton, Osborne and 5 more	7 hr

Nearby

Mesoscale Discussions in Nebraska, 2004 Mesoscale Discussions in Kansas, 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.