Alert archive / Minnesota / Mesoscale Discussions in 2014
Mesoscale Discussion 1740
The Storm Prediction Center issued this mesoscale discussion at Sep 20, 2014, 3:57 PM CDT for 36 counties in Minnesota. It was in force for 93 min.
The area
The outline as issued.
The facts
- Issued
- Sep 20, 2014, 3:57 PM CDT (20:57 UTC)
- Expired
- Sep 20, 2014, 5:30 PM CDT
- In force
- 93 min
- Issued by
- the Storm Prediction Center
All 36 counties
Aitkin County, MN, Anoka County, MN, Benton County, MN, Brown County, MN, Carver County, MN, Cass County, MN, Chippewa County, MN, Chisago County, MN, Crow Wing County, MN, Dakota County, MN, Hennepin County, MN, Isanti County, MN, Itasca County, MN, Kanabec County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Nicollet County, MN, Pine County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Swift County, MN, Todd County, MN, Washington County, MN, Wright County, MN, Yellow Medicine County, MN
The radar
The Minneapolis radar (KMPX), 129 km from the middle of the area, began a volume at 20:58 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 12:00Z, 9.0 hours before the alert went out and 127 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
- 295 J/kg
- Mixed-layer CIN
- -178 J/kg
- Mixed-layer LCL
- 1113 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- -28 m²/s²
- 0-3 km storm-relative helicity
- 50 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 20, 12:16 PM CDT | Mesoscale Discussion | SPC | Aitkin, Becker, Beltrami, Benton, Big Stone, Brown and 38 more | 59 min |
| Sep 20, 1:26 PM CDT | Severe Thunderstorm Watch | SPC | Aitkin, Anoka, Becker, Beltrami, Benton, Big Stone and 58 more | 6 hr |
| Sep 20, 5:23 PM CDT | Mesoscale Discussion | SPC | Blue Earth, Carver, Dakota, Dodge, Fillmore, Freeborn and 14 more | 67 min |
| Sep 20, 5:42 PM CDT | Severe Thunderstorm Watch | SPC | Dodge, Fillmore, Houston, Mower, Olmsted, Wabasha and 1 more | 3 hr |
| Sep 20, 5:55 PM CDT | Mesoscale Discussion | SPC | Clay, Norman, Polk | 95 min |
Nearby
Mesoscale Discussions in Minnesota, 2014Every mesoscale discussion in 2014
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.