Our forecast today takes us to a part of the world that could use a break from rough weather, after heavy rain led to destructive and devastating flash flooding. Will they get any respite?
At 918AM, MT, Boulder was reporting sunny skies with a temperature of 50 degrees. To the north, just across the border in Wyoming, there were winter storm warnings in preparation for a strong system gearing up in the northern Rockies. The strength of the trough as well as its depth and the cold air behind it indicate that this will indeed be the first significant winter storm of the year.
The question for our purposes is whether or not that significant weather will reach into Boulder or not. Right now, model guidance suggests that when the low comes into phase over the northern High Plains this evening, the bulk of the moisture will be well north of Boulder, and wrapped back into the Rockies west of town. The moisture looks to be expended n the high terrain thanks to a sharp westerly flow, but wind will be very strong from the south in Boulder through tomorrow morning. There may be a bit of precipitation tomorrow as the system shifts east to the Upper Midwest. Warmer air will return very quickly by Saturday as the system shifts swiftly away. The good news is, snow melt is slower and steadier, so even though snowfall will be measured in feet, flooding will not be a concern.
Tomorrow – Mostly cloudy, very windy and with a chance for some showers early, High 48, Low 33
Saturday – Cool early, then sunny, High 56, Low 32.
TWC: Tomorrow – Showers / Wind High 48, Low 32
Saturday – Partly Cloudy High 53, Low 30
AW: Tomorrow – Mostly cloudy with a little snow, mixed with rain early, up to 1″; breezy and much colder High 45, Low 31
Saturday – Warmer with plenty of sunshine High 59, Low 21
NWS: Tomorrow – Snow before noon, then a chance of rain and snow High 42, Low 30
Saturday – Sunny High 52, Low 28
WB: Tomorrow – Rain and snow in the morning…then a chance of rain and snow in the afternoon. Snow accumulation up to one inch. High 46, Low 32
Saturday – Mostly sunny High 55, Low 28
Perhaps it’s because of the lockout, but it is strange to see Weatherbug so divergent from the Weather Service. Also, Weatherbug is the only outlet that has a day time high tomorrow. Everyone else is going with a midnight high. Winter is going to introduce itself this weekend to this part of the world, so I hope they are ready.