Montana High Terrain Storms Prime Dakotas for 70 MPH Gust Clusters — SevereWX

Thunderstorms are ramping up across the high terrain in eastern Montana and northeastern Wyoming, poised to push damaging wind clusters into the western Dakotas this afternoon.

The Storm Prediction Center's Mesoscale Discussion 1797 highlights increasing storm coverage spreading eastward through late afternoon and evening. Activity already produced gusts to 57 mph in eastern North Dakota, and downstream environments feature upper 90s to 100°F heat, dewpoints in the 50s-60s, and eroding MLCIN for moderate instability. Steep lapse rates of 7-8°C/km near the surface support potential for strong downdrafts.

SPC mesoanalysis points to organized clusters capable of 55-70 mph gusts, with hail up to 1.25 inches possible. A watch issuance carries 60% odds to cover this evolving threat.

Peak threats focus on damaging straight-line winds, though discrete storms could yield some hail. Keep an eye on updates as storms intensify.

Stay prepared: Monitor local warnings, secure outdoor items, and have a severe weather plan ready. Check radar and SPC for the latest.