Alert archive / Nebraska / Mesoscale Discussions in 2004

Mesoscale Discussion 2086

August 23, 200413 counties in Kansas; 39 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Aug 23, 2004, 3:37 PM CDT for 13 counties in Kansas; 39 counties in Nebraska. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued: Aug 23, 2004, 3:37 PM CDT (20:37 UTC)
Expired: Aug 23, 2004, 5:30 PM CDT
In force: 113 min
Issued by: the Storm Prediction Center

All 52 counties

Cheyenne County, KS, Decatur County, KS, Graham County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Rawlins County, KS, Rooks County, KS, Russell County, KS, Sheridan County, KS, Sherman County, KS, Smith County, KS, Thomas County, KS, Arthur County, NE, Blaine County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Chase County, NE, Cherry 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, Grant County, NE, Greeley County, NE, Hall County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Holt County, NE, Hooker County, NE, Howard County, NE, Kearney County, NE, Keith County, NE, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Perkins County, NE, Phelps County, NE, Red Willow County, NE, Rock County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Wheeler County, NE

The radar

The North Platte radar (KLNX), 90 km from the middle of the area, began a volume at 20:40 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.

Severe Thunderstorm Watch 776Aug 23, 5:05 PM CDT

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.6 hours before the alert went out and 18 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: 1019 J/kg
Mixed-layer CIN: -169 J/kg
Mixed-layer LCL: 1454 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 94 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
Aug 23, 2:14 AM CDT	Mesoscale Discussion	SPC	Barber, Butler, Chautauqua, Clark, Comanche, Cowley and 7 more	2 hr
Aug 23, 3:48 PM CDT	Mesoscale Discussion	SPC	Barber, Clark, Comanche, Edwards, Finney, Ford and 9 more	117 min
Aug 23, 5:05 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Decatur, Rawlins, Sherman, Thomas	6 hr
Aug 23, 5:34 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Atchison, Bourbon, Brown, Chase and 30 more	116 min
Aug 23, 6:15 PM CDT	Tornado Watch	SPC	Allen, Anderson, Atchison, Bourbon, Brown, Chase and 27 more	7 hr
Aug 23, 2:58 PM CDT	Mesoscale Discussion	SPC	Antelope, Boone, Burt, Butler, Cass, Cedar and 23 more	2 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; radar from the NEXRAD Level II archive.