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What a way to end the week. We had mentioned in our week ahead post on Monday about the fact that the trend could turn warmer later in the week. This has turned out to be true. Below shows the 800 mb temperature pattern this afternoon to evening over the West. A deep trough is pushing into Montana and the …

The big trough the brought the snow and colder temperatures to the region has moved into the central United States. It digs all the way down into Mexico.  Across Colorado, northwest flow has set-up and will generally remain in place into early next week. There will be a few embedded disturbances to contend with in the coming days, some bigger …

A white Halloween for some (most) of you!  Light snow is wrapping up south of Denver this morning. Overall, most areas likely saw less snow than we predicted. Boulder, for example, was stuck in a pocket of warmer air overnight with temperatures staying a couple degrees above freezing. This combined with warm ground temperatures and generally light snowfall didn't produce …

The axis of the trough is located across far northwestern Utah this morning and will be slowly sagging southeastward into southern Colorado by late tonight. In the GOES water vapor animation below, you can see that moisture is streaming northward ahead of the trough, with much of the action remaining across Utah overnight which is just now entering western Colorado. …

A weak front or trough moved through last night, and, as a result, highs will continue to stay in the lower to middle 70's, similar to yesterday. Winds will start out of the north and east, then shift to be out of the south and southwest as westerly flow ensues again. The below image shows the upper-level 250 mb jet …

No real change in the weather pattern today. Below's 500 mb absolute vorticity pattern shows a consistent ridge across the southwest. West-northwest downslope flow remains across the state. A stronger push of westerly winds today will help push highs into the middle 70's, with some spots briefly touching the upper 70's. Expect lots of sunshine once again. It's a great …

Another pleasant day across the region as we end this last full week of October. Below shows the 500 mb height anomaly across the west. A ridge of high pressure is centered over the southwestern part of California. To the east, a trough is centered over the Midwest. In between is Colorado, with northwesterly flow over much of the state. …