Alert archive / Nebraska / Mesoscale Discussions in 2008
Mesoscale Discussion 1832
The Storm Prediction Center issued this mesoscale discussion at Jul 20, 2008, 7:58 PM CDT for 20 counties in Nebraska; 5 counties in South Dakota. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- Jul 20, 2008, 7:58 PM CDT (00:58 UTC)
- Expired
- Jul 20, 2008, 9:30 PM CDT
- In force
- 92 min
- Issued by
- the Storm Prediction Center
All 25 counties
Antelope County, NE, Blaine County, NE, Boyd County, NE, Brown County, NE, Cedar County, NE, Cherry County, NE, Dakota County, NE, Dixon County, NE, Garfield County, NE, Grant County, NE, Holt County, NE, Hooker County, NE, Keya Paha County, NE, Knox County, NE, Loup County, NE, Madison County, NE, Pierce County, NE, Rock County, NE, Wayne County, NE, Wheeler County, NE, Bennett County, SD, Bon Homme County, SD, Charles Mix County, SD, Gregory County, SD, Todd County, SD
The radar
The North Platte radar (KLNX), 60 km from the middle of the area, began a volume at 00:59 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, 1.0 hours before the alert went out and 145 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
- 1263 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 2927 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 225 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
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 20, 8:58 PM CDT | Severe Thunderstorm Watch | SPC | Antelope, Boone, Boyd, Burt, Butler, Cedar and 27 more | 7 hr |
| Jul 20, 11:10 PM CDT | Mesoscale Discussion | SPC | Antelope, Boone, Burt, Butler, Colfax, Cuming and 18 more | 95 min |
| Jul 21, 4:01 AM CDT | Mesoscale Discussion | SPC | Cedar, Dakota, Dixon | 89 min |
| Jul 21, 1:48 PM CDT | Mesoscale Discussion | SPC | Cass, Douglas, Fillmore, Gage, Jefferson, Johnson and 10 more | 87 min |
| Jul 21, 5:10 PM CDT | Severe Thunderstorm Watch | SPC | Johnson, Nemaha, Otoe, Pawnee, Richardson | 7 hr |
Nearby
Mesoscale Discussions in Nebraska, 2008Mesoscale Discussions in South Dakota, 2008Every mesoscale discussion in 2008
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.