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Northwest flow will take over at mid and upper-levels this afternoon (below). This change in the flow will allow a surface trough to push south and east of the Front Range today and tonight. The impact of this surface trough (see below) will aid in favoring a more upslope-driven surface wind this afternoon. The more extreme heat will get shunted …

The strong ridge remains situated over Utah and Nevada, with our area still under northwest flow aloft and largely dry air. The main change for today is the introduction of a weak disturbance that will clip northeast Colorado and spawn a few thunderstorms this afternoon and evening. The subtle feature is hard to detect in the graphic above, but is …

Today is the day where the ridge really begins to take control of the Rockies as it strengthens over Colorado, Utah and Nevada. The most unseasonable warmth will take place on the western portion of the ridge where deep southerly flow will bring north hot air from the Deserts. In our area, west-northwest flow will keep things warm but not …

Detailed Forecast Discussion: Sunday starts a bit warmer than recent days with a morning low around 66.  Clear skies will help the day warm up faster than we've seen in the last few days.  Sunday's high will be around 90 degrees with some westerly flow and a small chance of an afternoon shower.   The HRRR and NAM-NEST models below agree …

The trough from Friday has pushed into Canada, while the trough axis stretches from the Dakotas into far eastern Colorado. The passage of the trough, in conjunction with drier air settling in this afternoon, will produce a dry downslope flow on the Plains and also across the central to northern parts of the mountains. Both of the above mentioned factors …

Apotent upper-level disturbance will track through the state in the westerly flow over the Rockies. While the jet is not overly impressive, it is approaching 80 mph, which is decent for late-summer. This approach and passage of this mid-level wave will organize scattered to numerous showers and storms across the higher terrain today, moving onto the Plains later this afternoon …