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Another day, another weak atmospheric wave moving across the region. This is a frequent occurrence when northwest flow sets up over the northern Rockies. It's actually something we have been dealing with all winter long and has led to a bunch of weak storms with little to show for it. Similar to yesterday, this wave is quick-moving and sparse on moisture. Today's …

A timid shortwave will be moving through the region during the day today, bringing a weak cold front into northeast Colorado. Temperatures should be able to reach the upper 40's to lower 50's before the front arrives, then falling slowly thereafter. There will be just enough instability around to produce isolated to scattered afternoon and evening showers. Models are indicating 0.05 to …

With the spring snow now behind us, Tuesday will be quiet with mostly sunny skies. The wet snow will be melting quickly thanks to the high late-March sun angle and temperatures warming up into the 40's. Don't get too used to the lull in weather... Another weak wave will be dropping out of Canada for tomorrow embedded in the northwest flow. …

Another mild day on this Palm Sunday. Temperatures should rise once again to the middle 60's in most places, to some upper 60's in portions of southeast Denver. Winds will be out of the east-southeast as a low pressure system aloft tracks eastward (see below). The system will be well to our west this evening in Nevada. However, shortwave energy …

The atmospheric river event is now over for the western portion of the United States. The plume of moisture has dissipated and retreated southward into western Mexico.  Precipitation totals in California were indeed impressive. The map below show that the higher terrain largely saw more than 5", with the tallest peaks of the Sierras reporting 10" of precipitation (10+ feet of snow!). …

The well-advertised low pressure system and its atmospheric river have pushed inland today, now located in eastern Montana as of this morning. That, in turn, is bringing a trough axis through the region today with westerly winds aloft and at the surface. Along and west of the Divide, those westerly winds are producing upslope in the High Country, and thanks to …