Alert archive / Nebraska / Mesoscale Discussions in 2003

Mesoscale Discussion 1478

June 23, 20035 counties in Kansas; 43 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 23, 2003, 8:17 PM CDT for 5 counties in Kansas; 43 counties in Nebraska. It was in force for 58 min.

The area

The outline as issued.

The facts

Issued: Jun 23, 2003, 8:17 PM CDT (01:17 UTC)
Expired: Jun 23, 2003, 9:15 PM CDT
In force: 58 min
Issued by: the Storm Prediction Center

All 48 counties

Cloud County, KS, Jewell County, KS, Phillips County, KS, Republic County, KS, Smith County, KS, Adams County, NE, Antelope County, NE, Boone County, NE, Buffalo County, NE, Butler County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Custer County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Hitchcock County, NE, Holt County, NE, Howard County, NE, Kearney County, NE, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Red Willow County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thayer County, NE, Valley County, NE, Wayne County, NE, Webster County, NE, Wheeler County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 95 km from the middle of the area, began a volume at 01:20 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 00:00Z, 1.3 hours before the alert went out and 120 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: 4886 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1084 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 149 m²/s²
0-3 km storm-relative helicity: 351 m²/s²
Significant tornado parameter: 7.9
Supercell composite: 32.1

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 23, 8:20 PM CDT	Tornado Watch	SPC	Norton, Phillips, Smith	3 hr
Jun 24, 11:43 AM CDT	Mesoscale Discussion	SPC	Brown, Doniphan	2 hr
Jun 24, 3:47 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Rawlins, Sheridan, Sherman, Thomas	88 min
Jun 24, 3:55 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Decatur, Gove, Graham, Logan, Norton and 5 more	6 hr
Jun 24, 3:56 PM CDT	Mesoscale Discussion	SPC	Brown, Doniphan	64 min
Jun 24, 5:48 PM CDT	Mesoscale Discussion	SPC	Finney, Grant, Gray, Hamilton, Haskell, Kearny and 8 more	117 min
Jun 24, 6:30 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Gove, Graham, Logan, Norton and 6 more	2 hr
Jun 23, 8:34 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Deuel, Kimball	86 min
Jun 23, 8:55 PM CDT	Tornado Watch	SPC	Burt, Cass, Douglas, Gage, Jefferson, Johnson and 11 more	4 hr
Jun 23, 9:10 PM CDT	Mesoscale Discussion	SPC	Boyd	65 min
Jun 23, 9:10 PM CDT	Tornado Watch	SPC	Banner, Box Butte, Cheyenne, Deuel, Garden, Kimball and 3 more	4 hr
Jun 23, 10:38 PM CDT	Mesoscale Discussion	SPC	Cedar, Dakota, Dixon, Pierce, Wayne	67 min
Jun 23, 10:50 PM CDT	Tornado Watch	SPC	Adams, Antelope, Boone, Buffalo, Butler, Cedar and 26 more	5 hr
Jun 23, 10:50 PM CDT	Tornado Watch	SPC	Arthur, Blaine, Chase, Custer, Dawson, Frontier and 10 more	5 hr
Jun 23, 11:08 PM CDT	Mesoscale Discussion	SPC	Banner, Box Butte, Cheyenne, Garden, Grant, Kimball and 3 more	67 min
Jun 23, 11:45 PM CDT	Severe Thunderstorm Watch	SPC	Boyd, Brown, Cherry, Grant, Holt, Hooker and 3 more	6 hr
Jun 24, 12:50 AM CDT	Severe Thunderstorm Watch	SPC	Banner, Cheyenne, Deuel, Garden, Kimball, Morrill and 1 more	3 hr
Jun 24, 1:52 AM CDT	Mesoscale Discussion	SPC	Antelope, Blaine, Cedar, Dakota, Dixon, Garfield and 9 more	53 min
Jun 24, 2:44 AM CDT	Mesoscale Discussion	SPC	Boyd, Brown, Cherry, Grant, Holt, Hooker and 3 more	2 hr
Jun 24, 1:29 PM CDT	Mesoscale Discussion	SPC	Antelope, Blaine, Boone, Boyd, Brown, Buffalo and 22 more	3 hr
Jun 24, 2:15 PM CDT	Tornado Watch	SPC	Antelope, Blaine, Boyd, Brown, Cedar, Cherry and 18 more	8 hr
Jun 24, 5:59 PM CDT	Mesoscale Discussion	SPC	Antelope, Blaine, Boyd, Brown, Cedar, Dixon and 11 more	61 min

Nearby

Mesoscale Discussions in Nebraska, 2003 Mesoscale Discussions in Kansas, 2003 Every mesoscale discussion in 2003

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.