Alert archive / Minnesota / Mesoscale Discussions in 2025

Mesoscale Discussion 1949

August 15, 20259 counties in Minnesota; Richland County, Sargent County, North Dakota; Day County, Marshall County, Roberts County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Aug 15, 2025, 7:01 AM CDT for 9 counties in Minnesota; Richland County, Sargent County, North Dakota; Day County, Marshall County, Roberts County, South Dakota. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Aug 15, 2025, 7:01 AM CDT (12:01 UTC)
Expired: Aug 15, 2025, 8:30 AM CDT
In force: 89 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 20%

Counties Big Stone County, MN, Douglas County, MN, Grant County, MN, Otter Tail County, MN, Pope County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Wilkin County, MN, Richland County, ND, Sargent County, ND, Day County, SD, Marshall County, SD, Roberts County, SD

The radar

The Aberdeen radar (KABR), 146 km from the middle of the area, began a volume at 12:04 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, 0.0 hours before the alert went out and 264 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1154 J/kg
Mixed-layer CIN: -170 J/kg
Mixed-layer LCL: 833 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 349 m²/s²
0-3 km storm-relative helicity: 265 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.4

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 14, 8:49 PM CDT	Mesoscale Discussion	SPC	Kittson, Lake of the Woods, Mahnomen, Marshall, Norman, Pennington and 3 more	116 min
Aug 15, 1:41 PM CDT	Mesoscale Discussion	SPC	Fillmore, Houston, Mower	94 min
Aug 15, 4:58 PM CDT	Mesoscale Discussion	SPC	Anoka, Benton, Blue Earth, Carver, Chisago, Dakota and 26 more	92 min
Aug 15, 5:27 PM CDT	Severe Thunderstorm Watch	SPC	Anoka, Carver, Dakota, Goodhue, Hennepin, Kandiyohi and 12 more	6 hr

Nearby

Mesoscale Discussions in Minnesota, 2025 Mesoscale Discussions in South Dakota, 2025 Mesoscale Discussions in North Dakota, 2025 Every mesoscale discussion in 2025

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.