Alert archive / Nebraska / Mesoscale Discussions in 2003
Mesoscale Discussion 2179
The Storm Prediction Center issued this mesoscale discussion at Aug 18, 2003, 1:24 PM CDT for Jewell County, Republic County, Smith County, Kansas; 34 counties in Nebraska. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 18, 2003, 1:24 PM CDT (18:24 UTC)
- Expired
- Aug 18, 2003, 3:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 37 counties
Jewell County, KS, Republic County, KS, Smith County, KS, Adams County, NE, Boone County, NE, Buffalo County, NE, Butler County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Fillmore County, NE, Franklin County, NE, Gage County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Jefferson County, NE, Kearney County, NE, Lancaster County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Platte County, NE, Polk County, NE, Saline County, NE, Saunders County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thayer County, NE, Webster County, NE, York County, NE
The radar
The Grand Island radar (KUEX), 62 km from the middle of the area, began a volume at 18:26 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
Omaha, NE (KOAX), launched 12:00Z, 6.4 hours before the alert went out and 159 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
- 871 J/kg
- Mixed-layer CIN
- -256 J/kg
- Mixed-layer LCL
- 2262 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -52 m²/s²
- 0-3 km storm-relative helicity
- -43 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 |
|---|---|---|---|---|
| Aug 18, 2:05 PM CDT | Severe Thunderstorm Watch | SPC | Barton, Butler, Chase, Clay, Cloud, Dickinson and 27 more | 5 hr |
| Aug 18, 6:13 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Gove, Graham, Logan, Norton and 6 more | 2 hr |
| Aug 18, 2:40 PM CDT | Mesoscale Discussion | SPC | Kimball | 2 hr |
Nearby
Mesoscale Discussions in Nebraska, 2003Mesoscale Discussions in Kansas, 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.