A strong storm system currently over the Northeastern Pacific Ocean continues to bring unsettled weather for the Inland Northwest. A few pockets of colder air persist early this morning, and localized light freezing rain was present in the colder valleys. As the warm front continues to lift northward, look for the precipitation bands to push northward accordingly, with less coverage of precipitation across the region during the day. The storm`s associated cold front then pushes inland tonight, bringing another round of precipitation and rapidly lowering snow levels. Portions of central Washington will likely remain precipitation-shadowed with this cold frontal passage. Moderate snowfall will again be possible especially at Stevens and Lookout Passes. Northcentral Washington forecast today calling for mostly cloudy skies, mild temperatures and a 30% chance of rain and snow developing around dark, highs today in the upper 40’s.
The cold front then pushes eastward Wednesday, with a moist westerly flow aloft remaining over the region and windy conditions developing. Expect partly cloudy skies, west wind 10-20 mph with afternoon high temperatures still mild into the mid and upper 40’s.
For Thursday, a quick hitting upper level weather disturbance will drop down out of British Columbia to produce light snow late in the day with high temperatures slightly cooler into the upper 30’s.
Friday will be a high impact weather period due to snow as amounts will be heavy and have a wide scope of impacts across Central and Eastern Washington. Weather Models have been very consistent on the timing of snow starting Friday morning in the Wenatchee Valley and spreading into the Columbia Basin by early afternoon. This should mean that the morning commute will not terribly impacted, but the evening commute will be a completely different story. Temperatures will be low enough for snow across much of the region. All in all, this system is shaping up to be the most significant over the bulk of the area with snowfall. So, for Friday weather in the Wenatchee Valley we will see cloudy skies with a 90% chance of snow developing with 1-3 inches possible by late in the day, high temperatures will be cooler into the lower and mid 30’s. Friday night there is a 70% chance of more snow, maybe another inch or so, with overnight lows in the upper 20’s. Travel over mountain passes will be difficult with up to 2 feet of snow expected in some locations.
Cloudy skies for Saturday with a 30% chance of morning snow showers with afternoon highs in the mid 30’s.
As a strong cold front moves in from Canada on Sunday, expect a pretty significant cool down from the mild highs we’ve been experiencing with temperatures topping out in the lower 30’s.
By Sunday night and Monday, another round of snow moves our way with a 30-40% chance and highs Monday only in the upper 20’s.