Alert archive / Minnesota / Mesoscale Discussions in 2014
Mesoscale Discussion 1591
The Storm Prediction Center issued this mesoscale discussion at Aug 21, 2014, 12:29 AM CDT for 38 counties in Minnesota; 4 counties in South Dakota. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 21, 2014, 12:29 AM CDT (05:29 UTC)
- Expired
- Aug 21, 2014, 2:30 AM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 42 counties
Benton County, MN, Big Stone County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Cottonwood County, MN, Douglas County, MN, Grant County, MN, Hennepin County, MN, Jackson County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, Lincoln County, MN, Lyon County, MN, McLeod County, MN, Meeker County, MN, Morrison County, MN, Murray County, MN, Nicollet County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Waseca County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN, Codington County, SD, Deuel County, SD, Grant County, SD, Roberts County, SD
The radar
The Minneapolis radar (KMPX), 135 km from the middle of the area, began a volume at 05:29 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
Minneapolis, MN (KMPX), launched 00:00Z, 5.5 hours before the alert went out and 132 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
- 397 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 1160 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 162 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 |
|---|---|---|---|---|
| Aug 20, 9:07 PM CDT | Mesoscale Discussion | SPC | Rock | 2 hr |
| Aug 21, 1:00 AM CDT | Severe Thunderstorm Watch | SPC | Blue Earth, Brown, Carver, Chippewa, Douglas, Faribault and 22 more | 6 hr |
| Aug 21, 3:58 AM CDT | Mesoscale Discussion | SPC | Blue Earth, Brown, Carver, Chippewa, Cottonwood, Dakota and 29 more | 92 min |
| Aug 21, 5:15 AM CDT | Severe Thunderstorm Watch | SPC | Dodge, Fillmore, Houston, Mower, Olmsted | 5 hr |
| Aug 21, 9:04 AM CDT | Mesoscale Discussion | SPC | Fillmore, Freeborn, Houston, Mower | 86 min |
| Aug 20, 7:53 PM CDT | Mesoscale Discussion | SPC | Campbell, Corson, Dewey, Edmunds, Faulk, Haakon and 11 more | 97 min |
Nearby
Mesoscale Discussions in Minnesota, 2014Mesoscale Discussions in South Dakota, 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.