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Sunny but cool Tuesday The weak upper-level energy that brought patchy light snow showers to the region last night has whisked eastward into Kansas today. On the backside of the wave, very dry northwest flow has taken over across the northern Rockies, including Colorado. Another way of seeing this pipeline of dry air is via the mid-level water vapor animation …

Colder air today as northeasterly upslope flow has filtered in from the north and east due to the low pressure system in Nebraska pushing southeastward into Kansas and Missouri tonight. A secondary low pressure system (below) is also present across Utah. This wave will move through this evening and combine with some weak low-level upslope (bottom right) to lead to …

Lots of things going on in the atmosphere today. A low pressure system, which was south of us yesterday, has moved into northeastern Kansas today (below). While it is far east of us, its impact will be felt from Colorado through Nebraska and the Midwest. Heavy snowfall northwest of the low pressure system will bring up to 2 feet of …

Our last day of November ends with the approach of a low pressure system. Below shows the GFS 500 mb vorticity for today and Saturday. An area of low pressure is situated today over northern New Mexico, with southerly flow ahead of the trough over eastern Colorado. Westerly flow exists west of the system over western Colorado. Today, this system …

Mountain snow continues The active weather pattern across Colorado has begun! A weak trough moved through last night and brought light snow accumulations to the Mountains, generally 2 to 5". Snow will be tapering off later this morning. The lull in the action will be brief, however, with an even stronger storm arriving tonight. The 500 mb height anomaly forecast …

Unseasonably warm Wednesday Eastern Colorado will hold onto one more day of unseasonably warm temperatures before an approaching trough brings in cooler air tonight and tomorrow. The 700 mb temperature forecast below shows the Front Range clinging to temperatures just above freezing at 10,000 feet this afternoon. This will translate to temperatures in the upper 50's across the Plains and …