Like I talked about last week, the Arctic Oscillation is going negative and that means Canadian Air is headed our way. In fact, Wednesday's high temperatures will be 30 to 40 degrees cooler than Tuesday's highs. Check out the "Canadian Pipeline":
This just isn't going to be one cold day and then we bounce back. That cold air is going to lock itself up next to the mountains and stay here for a few days. This will be the coldest airmass we've seen, since the record cold we saw back in early October. Snow is also going to be possible. We can get some decent accumulations sometimes, with these Arctic Fronts. Light fluffy snow can accumulate several inches, when there really isn't a storm around to cause it. However, with the energy from the jet stream being so close and some weak upslope, accumulations will be possible along and west of I-25:
Our Hour by Hour model shows 1 to 3" possible up and down I-25 from Tuesday night through Wednesday. Areas just west of I-25 could see more than that, especially over Teller County and in the foothills west and southwest of Denver. We are still working on exact snowfall accumulations, but the potential is there. At the very least plan on some snow and cold temperatures for your Wednesday morning drive to work...
More on this tomorrow.
Chief Meteorologist Brian Bledsoe
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