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The Arctic airmass has been fully-entrenched across the region last night and this morning. Clear skies, light winds, and fresh snow have allowed temperatures to dip into the single digits in Denver and Boulder this morning, some of the coldest air of the winter season. While cold air will remain in place today, plentiful sunshine and decent mixing will permit temperatures …

The figure below shows the mid-level pattern today across the region. Over the western United States, high pressure is present over Nevada. To the north and east, a weak area of low pressure is situated over northwestern Minnesota. This pattern puts Colorado once again in a weak northwesterly flow aloft. We will continue to see downslope flow for the Plains. …

Below shows the mid-level relative humidity forecast for this afternoon across the CONUS. The area focused on in red highlights the Colorado region. In general, our region is dominated by a ridge of high pressure slightly to our west in Utah. To our east, a trough of low pressure is evident. Thus, the bulk of the cold air is off …

Happy Friday everyone!  As we detailed yesterday, gusty winds are underway in the Foothills. Some gusts reported this morning just west of Boulder exceed 60 mph. We expect breezy conditions to begin across the lower elevations by mid morning, continuing into the afternoon. Gusts across the Metro area will be in the 30 to 35 mph range at times. It's …

Quiet but cool weather is expected today following the passage of yesterday's weather system. We only reported a trace of rain and then a trace of snow at BoulderCAST Station. Highs today will be in the middle 40's with sunny skies.  A 140 mph jet streak will be overhead this evening into tomorrow with the potential for a mountain wave to …

Warmth is the headline today as southwest flow controls our weather in the mid-levels of the atmosphere. The 850 mb temperature anomaly map below shows the northward surge of warm air into the Great Plains and Colorado. Highs this afternoon are expected to reach the upper 60's across the Plains with mostly sunny skies. The record high for the date is …