It is late afternoon and we are driving towards Devil’s Tower in Wyoming for a little evening photography before settling in tonight at Miles City, MT. We spend the early afternoon today in Rapid City, Vince needed to get an oil change in the car and we had a nice little sit down lunch at my favorite brew-pub up North called the Firehouse. Anyway, I think tomorrow looks like a potentially great day for southeastern Montana supercells… a classic looking "north of the low" setup for eastern Montana with fantastic low level moisture and very nice deep layer shear. Sunday appears to be somewhere over central/eastern North Dakotat per the latest GFS/NAM model runs.
Jon Finch: I knew you’d probably question our no-go for Canada 
.. we just thought it would be at least 100 miles north of the border (and by the looks of radar right now, that appears to be verifying)… and by the time the chase would end at like 10pm or so… we’d be well into Manitoba… and realizing that Sunday and Monday looked almost just as good in terms of CAPE/Shear combo… well.. we thought we’d take a pass on the first of what looks to be 3 pretty good (tornadic?) supercell days. We may miss a big tornado today by not driving our brains out to get to Canada, but there’ll be more opportunities I think… you know me, I’m a structure guy anyway, and as far as photography goes, the structure/scenery of the Chadron supercell yesterday was better than about 2/3s of all tornadoes I’ve seen (contrast, visibility, longevitiy, etc).. I think tornado prospects Sunday and monday look pretty darn good… As much as you despise the really low elevation of eastern Montana, I still think there’ll be a decent tornado prospect out this way with east winds, fairly low LCLs and what looks to be really good shear.
EDIT at 8:23pm: Well, maybe we did F this one up. Sitting here at Devil’s Tower and pulled up a radar image from Minot. Ouch. It’s also moving southeast towards the US line. We took the model runs a day and a half ago hook-line-sinker that things the best beastie today would be about 150-200 miles north of the border. Oh well.. can’t go back and try this one again. Time to look forward to tomorrow and Monday.