Alert archive / Minnesota / Mesoscale Discussions in 2011
Mesoscale Discussion 1801
The Storm Prediction Center issued this mesoscale discussion at Jul 30, 2011, 8:57 PM CDT for 26 counties in Minnesota; Deuel County, South Dakota; 7 counties in Wisconsin. It was in force for 93 min.
The area
The outline as issued.
The facts
- Issued
- Jul 30, 2011, 8:57 PM CDT (01:57 UTC)
- Expired
- Jul 30, 2011, 10:30 PM CDT
- In force
- 93 min
- Issued by
- the Storm Prediction Center
All 34 counties
Anoka County, MN, Benton County, MN, Carver County, MN, Chippewa County, MN, Chisago County, MN, Dakota County, MN, Hennepin County, MN, Isanti County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, McLeod County, MN, Meeker County, MN, Pine County, MN, Pope County, MN, Ramsey County, MN, Renville County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Swift County, MN, Washington County, MN, Wright County, MN, Yellow Medicine County, MN, Deuel County, SD, Barron County, WI, Burnett County, WI, Polk County, WI, Rusk County, WI, Saint Croix County, WI, Sawyer County, WI, Washburn County, WI
The radar
The Minneapolis radar (KMPX), 60 km from the middle of the area, began a volume at 01:58 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 nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 2.0 hours before the alert went out and 60 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
- 2387 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 1239 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 8.4
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 30, 11:07 PM CDT | Mesoscale Discussion | SPC | Carver, Dakota, Goodhue, Hennepin, Le Sueur, McLeod and 7 more | 53 min |
| Jul 31, 12:50 PM CDT | Mesoscale Discussion | SPC | Big Stone, Brown, Chippewa, Cottonwood, Kandiyohi, Lac qui Parle and 12 more | 2 hr |
| Jul 31, 2:23 PM CDT | Mesoscale Discussion | SPC | Anoka, Carver, Chisago, Dakota, Goodhue, Hennepin and 11 more | 2 hr |
| Jul 31, 5:44 PM CDT | Tornado Watch | SPC | Butte, Campbell, Corson, Dewey, Edmunds, Faulk and 7 more | 7 hr |
| Jul 30, 7:38 PM CDT | Mesoscale Discussion | SPC | Barron, Burnett, Chippewa, Dunn, Eau Claire, Pepin and 6 more | 97 min |
Nearby
Mesoscale Discussions in Minnesota, 2011Mesoscale Discussions in Wisconsin, 2011Mesoscale Discussions in South Dakota, 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.