One reason for the recent stretch of quiet and warm weather in Colorado is that the position of jet stream is FAR to our north in Canada. Weather systems tend to form near the jet stream….along the baroclinic boundary between warm and cold air masses. Without the jet, our pattern has been quiet this week and this will continue through Friday evening.

250 mb wind map for this afternoon showing the position of the jet stream (lime green).

For today, expect mid-level clouds to dominate the sky in the morning as a swath of elevated moisture interacts with the terrain. However, drier air aloft moves in by lunch which will allow for sunshine this afternoon and evening. High temperatures will be in the upper 70’s today!

After 70’s tomorrow and possibly low 80’s on Friday, a dry cold front sweeps through Friday night. Temperatures will tumble about 20 degrees for Saturday, but at least that sun won’t stop shining…


Remember, these daily forecasts are Premium content. Periodically, we open this forecast up to all of our readers. Today is one of those days!

Sign up today to get the best BoulderCAST experience, including these daily forecasts every morning, complete 6-day skiing and hiking forecasts, chat room and forum access, early viewing of select content and much more!

As a special pre-winter promotion, use the promo code SNOW to receive 30% off our annual subscription. This is our last offer of 2017 and it expires October 31st.   LEARN MORE

.

Ben Castellani

Ben grew up in southwestern Pennsylvania and holds both a bachelor's and a master's degree in Meteorology, the latter being from CU Boulder. His hometown received nearly three feet of snow from the Storm of the Century back in March of 1993, sparking his initial interest in impactful weather. Ben currently works on remote sensing and data analysis software at L3Harris Technologies in Boulder.

More Posts