Weather 12-20-19

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The fire hose of moisture continues to point at the Pacific Northwest this morning as an upper level weather system spins off the British Columbia coast. This puts the region in a warm and very moist southwest flow. After around 3-5 inches of snow overnight in the Wenatchee Valley more precipitation is expected through the day today and will fall as a wintry mix. Several winter highlights are still in effect this morning and these will likely begin to come down through the day today as temperatures increase and precipitation slows down. Cloudy skies today and warmer for Northcentral Washington with a 60% chance of late afternoon showers and a 70% chance of rain tonight with afternoon high temperatures in the lower 40’s. The temperature will tough with cooler temperatures hanging up in the Cascades and warm temperatures across the eastern zones.

The upper trough off the B.C. coast will drop south and begin to move inland Saturday and Sunday, with a cold front finally sagging into the region Saturday night. Warm air advection will continue to keep temperatures on the warm side of normal Saturday and the deep Atmospheric River of moisture will linger over Northcentral Washington through Saturday morning, before sagging to the south ahead of the cold front. So for Saturday, expect rain showers in the morning with cloudy skies for the rest of the day with high temperatures near 40 degrees.

Sunday and Monday the huge winter storm moves away allowing for clearing skies and drier conditions with afternoon high temperatures both days in the upper 30’s.

Tuesday and Christmas Day Wednesday will feature the driest days of the week with morning fog each day, mostly cloudy skies and cooler temperatures with highs in the lower 30’s.