It wasn’t forecast to snow today, but the jet is over northern CO with decent moisture, so it is. Could be a bit of a sleeper powder day. Or at least nice and soft.
Pretty big transition coming up (emphasis mine):
The upcoming week will feature a slow motion transition from an upper
ridge over Colorado and the rest of the Rockies to a longwave
trough over the same regions. And the transition is currently forecast to take about six days to occur. The
GFS has the least
amplitude at Day 7 and is therefore more progressive with placement of the
trough axis at that time. However, the 00z runs of the Canadian and
ECMWF show remarkable agreement through
about 168 hours and then begin to diverge with the shape and placement of a
closed low over Utah and northern Arizona.
What does it
mean? The first couple days of the forecast should be dry and quite warm as
subsidence under the upper
ridge axis suppresses any shower activity over the mountains. The warmest day looks to be Friday.
Over the weekend, things begin to cool off as the upper
ridge slides eastward and a surface low develops over eastern Colorado which begins drawing cooler air in from the north. In the
mountains,
moisture from the southwest will be arriving, increasing the coverage of rain showers and then snowfall as the weekend continues. These
moisture levels will need to be monitored as Western Region`s
Ensemble Situational Awareness Table shows that the
moisture coming ashore over California in the next couple days is going to be 5 to 8 standard deviations above climatology. Even though the bulk of this
moisture is going to be falling over California, Nevada and Utah, the amount that makes it to the Colorado mountains is probably going to be a little higher than a typical Spring storm. This will also be monitored over the next
couple days. Snow Levels from Friday into Saturday will also be starting out quite high, at or above 10,000 feet, due to the initial warmth of the airmass and the fact that the
moisture is moving in on a southwesterly
fetch. Snow levels will then fall
through the weekend. One period of precipitation is expected Friday night and then a second period should arrive Sunday into Monday.