An unsettled weather pattern continues as the next wave of moisture moves into the Columbia Basin, Okanogan County and the Wenatchee Valley by tonight. Northcentral Washington will see increasing clouds throughout the day with a 30% chance of showers, high temperatures in the mid to upper 50’s. The chance for rain goes up to 70% tonight with less than a half inch of moisture expected.
Precipitation will begin to taper off Friday morning and then become more showery through the remainder of the day with a 30% chance of showers and afternoon high temperatures in the mid 50’s. By late Friday night and Saturday morning, expect moderate to heavy precipitation to impact the Inland Northwest. The unsettled weather is courtesy of a deep low dropping through the Pacific Northwest from British Columbia. The track of the surface low will be key to which areas receive the heaviest precipitation and models continue to waver within a few counties regarding these details. There is an 80% chance for rain in the Wenatchee Valley Friday night and once again Saturday morning with mostly cloudy skies by afternoon and highs only around 50 degrees. Snow levels may get driven down toward 2500-3000 feet. Potential impacts within this band of moisture would be a quick 1-3 inches of heavy wet snow which could lead to localized tree damage and/or power outages.
A warm front will slide into the area on Sunday and Monday which will lead to scattered light showers but amounts will be light and generally under a quarter of an inch. With afternoon highs in the mid to upper 50’s, expect a 50% chance of showers each day.
Another deep low pressure system drops in from the northwest Tuesday and will track along the subtropical moisture plume bringing another threat for moderate to heavy precipitation. Most of Northcentral Washington will see a 50% chance of rain Tuesday with high temperatures warming to near 60 degrees.