This content was originally published by the Longmont Observer and is licensed under a Creative Commons license.
Forecast Discussion:
Closer the front comes... step by step...
With the storm moving in Friday night - I'll post this early so you have a heads-up.
There will be a low forming down in the SE corner of the state that will create some up-slope flow from about 4am to 3pm on Saturday. We seem to be well placed for a coating of snow; maybe up to a local inch of snow in spots. Hurray!
Will it last until Christmas morning?
The longer range forecast:
The GFS is giving us 1/10th to 1 inch of snow Saturday (as shown above) and that is all that is going to fall by Christmas afternoon (Figure 2). The GEM puts us in the 1/2" area by Christmas afternoon (Figure 3).
After Christmas, more snow is on the way. As is colder air. Over the next 5 days (going up to a day after Christmas) we are given 2-3 inches of snow by the GFS (Figure 4).
Figure 5 is the overview of the next 10 days:
The precipitation Saturday is will last about 10-12 hours then things warm to the mid 40's for Christmas Eve Eve and Christmas Eve - and lower 40'sF Christmas Day. The precipitation won't start again until after about 9pm on Christmas Day and will continue on and off to the weekend. The initial push on Wednesday is a hefty 3-5 inches according to the Weatherunderground.com model. As always, more later!
