Alert archive / Nebraska / Mesoscale Discussions in 2003
Mesoscale Discussion 1942
The Storm Prediction Center issued this mesoscale discussion at Jul 21, 2003, 1:24 PM MDT for Phillips County, Sedgwick County, Colorado; 8 counties in Kansas; 15 counties in Nebraska. It was in force for 66 min.
The area
The outline as issued.
The facts
- Issued
- Jul 21, 2003, 1:24 PM MDT (19:24 UTC)
- Expired
- Jul 21, 2003, 2:30 PM MDT
- In force
- 66 min
- Issued by
- the Storm Prediction Center
All 25 counties
Phillips County, CO, Sedgwick County, CO, Cheyenne County, KS, Decatur County, KS, Graham County, KS, Norton County, KS, Phillips County, KS, Rawlins County, KS, Sheridan County, KS, Thomas County, KS, Chase County, NE, Dawson County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Lincoln County, NE, Perkins County, NE, Phelps County, NE, Red Willow County, NE
The radar
The Goodland radar (KGLD), 110 km from the middle of the area, began a volume at 19:27 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
Denver, CO (KDNR), launched 12:00Z, 7.4 hours before the alert went out and 187 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.
- Mixed-layer CAPE
- 6 J/kg
- Mixed-layer CIN
- -349 J/kg
- Mixed-layer LCL
- 2566 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 3:50 PM MDT | Tornado Watch | SPC | Phillips, Sedgwick, Yuma | 5 hr |
| Jul 20, 6:03 PM MDT | Mesoscale Discussion | SPC | Decatur, Norton, Phillips, Rawlins, Sheridan, Thomas | 87 min |
| Jul 20, 7:50 PM MDT | Tornado Watch | SPC | Brown, Clay, Cloud, Jewell, Lincoln, Marshall and 5 more | 5 hr |
| Jul 20, 9:16 PM MDT | Mesoscale Discussion | SPC | Chase, Coffey, Dickinson, Douglas, Franklin, Geary and 9 more | 89 min |
| Jul 20, 9:43 PM MDT | Mesoscale Discussion | SPC | Brown, Clay, Cloud, Jewell, Marshall, Mitchell and 6 more | 62 min |
| Jul 20, 6:49 PM MDT | Mesoscale Discussion | SPC | Adams, Burt, Butler, Cass, Clay, Colfax and 26 more | 56 min |
Nearby
Mesoscale Discussions in Nebraska, 2003Mesoscale Discussions in Kansas, 2003Mesoscale Discussions in Colorado, 2003Every 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.