Alert archive / North Dakota / Mesoscale Discussions in 2005
Mesoscale Discussion 2142
The Storm Prediction Center issued this mesoscale discussion at Sep 4, 2005, 8:31 PM CDT for 23 counties in North Dakota; 8 counties in South Dakota. It was in force for 89 min.
The area
The outline as issued.
The facts
- Issued
- Sep 4, 2005, 8:31 PM CDT (01:31 UTC)
- Expired
- Sep 4, 2005, 10:00 PM CDT
- In force
- 89 min
- Issued by
- the Storm Prediction Center
All 31 counties
Barnes County, ND, Benson County, ND, Cass County, ND, Cavalier County, ND, Dickey County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Ransom County, ND, Sargent County, ND, Steele County, ND, Stutsman County, ND, Towner County, ND, Traill County, ND, Walsh County, ND, Brown County, SD, Campbell County, SD, Edmunds County, SD, Faulk County, SD, McPherson County, SD, Potter County, SD, Sully County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 129 km from the middle of the area, began a volume at 01:30 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
Bismarck Municip, ND (KBIS), launched 00:00Z, 1.5 hours before the alert went out and 138 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
- 405 J/kg
- Mixed-layer CIN
- -275 J/kg
- Mixed-layer LCL
- 2829 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 4, 10:15 PM CDT | Severe Thunderstorm Watch | SPC | Barnes, Cass, Cavalier, Dickey, Eddy, Foster and 15 more | 6 hr |
| Sep 4, 11:53 PM CDT | Mesoscale Discussion | SPC | Barnes, Cass, Cavalier, Dickey, Eddy, Foster and 15 more | 97 min |
| Sep 5, 2:31 AM CDT | Mesoscale Discussion | SPC | Barnes, Cass, Cavalier, Dickey, Eddy, Foster and 15 more | 119 min |
| Sep 5, 3:19 PM CDT | Mesoscale Discussion | SPC | Barnes, Cass, Dickey, Grand Forks, LaMoure, Ransom and 4 more | 86 min |
| Sep 5, 3:45 PM CDT | Severe Thunderstorm Watch | SPC | Barnes, Cass, Dickey, Grand Forks, Griggs, LaMoure and 8 more | 8 hr |
| Sep 5, 5:05 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Brookings, Brown, Brule, Buffalo and 26 more | 7 hr |
Nearby
Mesoscale Discussions in North Dakota, 2005Mesoscale Discussions in South Dakota, 2005Every mesoscale discussion in 2005
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.