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Astrong mid-level trough, which has been affecting us for the past several days, is currently located over central California, with its northern branch over Washington and Oregon. The flow over us remains southerly. The strongest lift/energy will continue to reside over the High Country and western portions of the state. It will be another warm day with highs in the …

Colorado is largely sandwiched between high pressure to our east in eastern Kansas and a deep double-lobed trough stretching from Washington to California. This pattern is sending a strong southerly flow across the state. This will continue to lead to very hot temperatures, today reaching the middle to upper 90s on the Plains. The southerly flow will advect subtropical moisture …

Yesterday's high temperature was only 81°F --- a far cry from the scorching 98°F the day prior. It sure felt nice! The current large scale pattern is shown in the 500mb GFS height anomaly forecast panel below. The big storm system up in southern Canada has a trailing trough stretching all the way southward into northern Colorado --- this is …

The heatwave has finally cracked! A cold front passed through last night around 10:00PM with gusty winds and a wave of blowing dust battering the Denver Metro area.  As a result of this frontal passage, temperatures today will be about 15 to 20 degrees cooler. https://twitter.com/BoulderCAST/status/1536553075342684160   This morning's GOES-East infrared satellite animation is shown below. The big, cold trough …

Atrough of low pressure has moved inland from the Pacific Ocean, located over northeast Oregon. A cold front extends from the low into northern California. The cold air behind the front is just enough to bring a late-season snowfall to the northern Rockies of Idaho/Montana early this coming week. The trough to our northwest and the ridge, which shifts to …

Colorado is situated between a ridge of high pressure to our south and a trough in the Pacific Northwest. This pattern will more or less be the case tomorrow as well, although the trough out west will move inland over Oregon. As a result of this pattern, a moist pattern is in place across the state, in addition to the …