Alert archive / North Dakota / Mesoscale Discussions in 2011
Mesoscale Discussion 1499
The Storm Prediction Center issued this mesoscale discussion at Jul 4, 2011, 1:56 PM CDT for 7 counties in Minnesota; 19 counties in North Dakota. It was in force for 64 min.
The area
The outline as issued.
The facts
- Issued
- Jul 4, 2011, 1:56 PM CDT (18:56 UTC)
- Expired
- Jul 4, 2011, 3:00 PM CDT
- In force
- 64 min
- Issued by
- the Storm Prediction Center
All 26 counties
Kittson County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Benson County, ND, Bottineau County, ND, Cavalier County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, McHenry County, ND, Nelson County, ND, Pembina County, ND, Pierce County, ND, Ramsey County, ND, Rolette County, ND, Sheridan County, ND, Steele County, ND, Towner County, ND, Traill County, ND, Walsh County, ND, Wells County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 105 km from the middle of the area, began a volume at 18:56 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 12:00Z, 6.9 hours before the alert went out and 193 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
- 1357 J/kg
- Mixed-layer CIN
- -268 J/kg
- Mixed-layer LCL
- 1232 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 158 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 4, 3:06 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Beltrami, Clay, Clearwater, Grant, Hubbard and 12 more | 7 hr |
| Jul 4, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Big Stone, Traverse | 8 hr |
| Jul 4, 6:09 PM CDT | Mesoscale Discussion | SPC | Aitkin, Becker, Beltrami, Cass, Clay, Clearwater and 19 more | 2 hr |
| Jul 3, 9:02 PM CDT | Mesoscale Discussion | SPC | Billings, Bowman, Burke, Divide, Dunn, Golden Valley and 4 more | 58 min |
| Jul 3, 9:41 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Billings, Bowman, Burke, Divide, Dunn and 11 more | 3 hr |
| Jul 3, 11:30 PM CDT | Mesoscale Discussion | SPC | Adams, Billings, Bowman, Burke, Divide, Dunn and 12 more | 90 min |
Nearby
Mesoscale Discussions in North Dakota, 2011Mesoscale Discussions in Minnesota, 2011Every mesoscale discussion in 2011
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.