A heavy-precipitation (HP) supercell just had been overtaken by the southern portion of a squall line, but retained its strong midlevel rotation, keeping it a line-embedded supercell fronted by an accelerating wall of wind and hail. The resulting storm rampaged southeastward down the Milk River Valley of northern Montana at highway speeds of 60 mph or more. Though even a brief stop would allow it to close the gap by a mile or more, I could not resist pulling off to get a shot of the wildly formed and illuminated shelf cloud and capping formations during this stage. After just one more stop, on the outskirts of Glasgow, we hastily found pre-arranged shelter to stop running away from it, and let the severe weather roll past.
4 NE Vandalia MT (18 Jun 16) Looking WNW
48.3826, -106.8241Milk River Rampage
A heavy-precipitation (HP) supercell just had been overtaken by the southern portion of a squall line, but retained its strong midlevel rotation, keeping it a line-embedded supercell fronted by an accelerating wall of wind and hail. The resulting storm rampaged southeastward down the Milk River Valley of northern Montana at highway speeds of 60 mph or more. Though even a brief stop would allow it to close the gap by a mile or more, I could not resist pulling off to get a shot of the wildly formed and illuminated shelf cloud and capping formations during this stage. After just one more stop, on the outskirts of Glasgow, we hastily found pre-arranged shelter to stop running away from it, and let the severe weather roll past.
4 NE Vandalia MT (18 Jun 16) Looking WNW
48.3826, -106.8241