Alert archive / Minnesota / Mesoscale Discussions in 2017
Mesoscale Discussion 1287
The Storm Prediction Center issued this mesoscale discussion at Jul 11, 2017, 3:48 PM CDT for 22 counties in Minnesota; 16 counties in North Dakota; 18 counties in South Dakota. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Jul 11, 2017, 3:48 PM CDT (20:48 UTC)
- Expired
- Jul 11, 2017, 5:15 PM CDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 56 counties
Becker County, MN, Big Stone County, MN, Chippewa County, MN, Clay County, MN, Douglas County, MN, Grant County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Mahnomen County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Pipestone County, MN, Polk County, MN, Pope County, MN, Red Lake County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Wilkin County, MN, Yellow Medicine County, MN, Barnes County, ND, Cass County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, LaMoure County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Traill County, ND, Walsh County, ND, Beadle County, SD, Brookings County, SD, Brown County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Marshall County, SD, Miner County, SD, Moody County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD
The radar
The Aberdeen radar (KABR), 115 km from the middle of the area, began a volume at 20:52 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
Aberdeen, SD (KABR), launched 12:00Z, 8.8 hours before the alert went out and 159 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1893 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Jul 11, 4:48 PM CDT | Tornado Watch | SPC | Becker, Clay, Clearwater, Grant, Hubbard, Kittson and 9 more | 6 hr |
| Jul 11, 6:52 PM CDT | Severe Thunderstorm Watch | SPC | Big Stone, Chippewa, Douglas, Lac qui Parle, Lincoln, Lyon and 7 more | 5 hr |
| Jul 11, 6:26 PM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brookings, Clark, Codington, Davison and 12 more | 2 hr |
Nearby
Mesoscale Discussions in Minnesota, 2017Mesoscale Discussions in South Dakota, 2017Mesoscale Discussions in North Dakota, 2017Every mesoscale discussion in 2017
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.