Alert archive / Nebraska / Mesoscale Discussions in 2010
Mesoscale Discussion 1817
The Storm Prediction Center issued this mesoscale discussion at Sep 13, 2010, 1:38 PM CDT for 24 counties in Kansas; 29 counties in Nebraska. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Sep 13, 2010, 1:38 PM CDT (18:38 UTC)
- Expired
- Sep 13, 2010, 2:45 PM CDT
- In force
- 67 min
- Issued by
- the Storm Prediction Center
All 53 counties
Brown County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Ellsworth County, KS, Geary County, KS, Jackson County, KS, Jewell County, KS, Lincoln County, KS, Marshall County, KS, Mitchell County, KS, Morris County, KS, Nemaha County, KS, Osborne County, KS, Ottawa County, KS, Phillips County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Russell County, KS, Saline County, KS, Smith County, KS, Wabaunsee County, KS, Washington County, KS, Adams County, NE, Buffalo County, NE, Butler County, NE, Cass County, NE, Clay County, NE, Fillmore County, NE, Franklin County, NE, Gage County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Jefferson County, NE, Johnson County, NE, Kearney County, NE, Lancaster County, NE, Merrick County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Phelps County, NE, Polk County, NE, Richardson County, NE, Saline County, NE, Seward County, NE, Thayer County, NE, Webster County, NE, York County, NE
The radar
The Grand Island radar (KUEX), 82 km from the middle of the area, began a volume at 18:38 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, 6.6 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
- 1214 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 967 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 |
|---|---|---|---|---|
| Sep 13, 2:38 PM CDT | Tornado Watch | SPC | Brown, Clay, Cloud, Decatur, Graham, Jackson and 14 more | 7 hr |
| Sep 13, 5:07 PM CDT | Mesoscale Discussion | SPC | Barber, Barton, Clark, Comanche, Edwards, Ellis and 15 more | 53 min |
| Sep 13, 5:45 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Doniphan, Leavenworth, Wyandotte | 60 min |
| Sep 13, 6:09 PM CDT | Severe Thunderstorm Watch | SPC | Atchison, Doniphan | 4 hr |
| Sep 13, 6:30 PM CDT | Mesoscale Discussion | SPC | Cloud, Decatur, Jewell, Marshall, Norton, Phillips and 3 more | 60 min |
Nearby
Mesoscale Discussions in Nebraska, 2010Mesoscale Discussions in Kansas, 2010Every mesoscale discussion in 2010
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.