Alert archive / Minnesota / Mesoscale Discussions in 2018
Mesoscale Discussion 1369
The Storm Prediction Center issued this mesoscale discussion at Aug 27, 2018, 11:49 AM CDT for 4 states. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- Aug 27, 2018, 11:49 AM CDT (16:49 UTC)
- Expired
- Aug 27, 2018, 1:45 PM CDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 67 counties
Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Emmet County, IA, Ida County, IA, Kossuth County, IA, Lyon County, IA, Monona County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Sac County, IA, Sioux County, IA, Woodbury County, IA, Anoka County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Cottonwood County, MN, Faribault County, MN, Hennepin County, MN, Isanti County, MN, Jackson County, MN, Kandiyohi County, MN, Le Sueur County, MN, Lincoln County, MN, Lyon County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Pipestone County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Waseca County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN, Burt County, NE, Cedar County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Stanton County, NE, Thurston County, NE, Wayne County, NE, Brookings County, SD, Clay County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Minnehaha County, SD, Moody County, SD, Turner County, SD, Union County, SD
The radar
The Sioux Falls radar (KFSD), 86 km from the middle of the area, began a volume at 16:49 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 12:00Z, 4.8 hours before the alert went out and 222 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
- 1465 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 698 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 232 m²/s²
- 0-3 km storm-relative helicity
- 249 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 4.7
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 2:24 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Buena Vista, Butler, Calhoun, Cerro Gordo and 21 more | 96 min |
| Aug 27, 2:57 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cerro Gordo, Cherokee, Clay, Dickinson, Emmet and 14 more | 7 hr |
| Aug 26, 7:37 PM CDT | Tornado Watch | SPC | Big Stone, Clay, Traverse, Wilkin | 5 hr |
| Aug 26, 9:48 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Beltrami, Cass, Clearwater, Hubbard, Itasca and 10 more | 6 hr |
| Aug 26, 10:55 PM CDT | Mesoscale Discussion | SPC | Becker, Beltrami, Big Stone, Cass, Clay, Clearwater and 16 more | 2 hr |
| Aug 27, 2:04 AM CDT | Mesoscale Discussion | SPC | Hubbard, Itasca, Saint Louis | 2 hr |
| Aug 27, 3:46 PM CDT | Mesoscale Discussion | SPC | Blaine, Brown, Cherry, Custer, Hooker, Logan and 2 more | 119 min |
| Aug 27, 6:17 PM CDT | Mesoscale Discussion | SPC | Blaine, Boyd, Brown, Holt, Keya Paha, Logan and 3 more | 88 min |
| Aug 27, 6:42 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Bon Homme, Brule, Buffalo, Charles Mix and 17 more | 4 hr |
Nearby
Mesoscale Discussions in Minnesota, 2018Mesoscale Discussions in Iowa, 2018Mesoscale Discussions in South Dakota, 2018Every mesoscale discussion in 2018
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.