From Meteorologist Matt Makens
Thursday-Friday Storm System: We’ll be back into the 70s Thursday — the “warm before the storm”. A powerful cold front slams into Denver, Boulder, and Fort Collins Thursday evening dropping temperatures by 40-50 degrees in a short time. Then rain showers develop followed by a heavy rain/snow mix overnight turning to all snow for a period during the Friday morning rush-hour. Snow ends Friday afternoon.
Storm Specifics: Heaviest snow falls above 7,000ft with a heavy mix below. The Palmer Divide is the bullseye with 5-15 inches of total snow possible. Watch for power outages and fallen trees. Very windy on Thursday night through Friday: Gusts 30-60mph = Blizzard Conditions. How much accumulation in Denver? Some but also plenty of melting and rain mixing in initially.
Mountains: Light rain showers move in overnight then changes to snow during the day on Thursday as colder air moves in. Snow continues Thursday night into Friday morning before ending. 4-12″ of total accumulation between Thursday and Friday.
Travel Impact: As a strong system forms and then moves over our plains there will be travel impacts Thursday night and Friday. The most significant delays are shown here. I’ll adjust this map if the storm changes track and/or speed.