PORTLAND, Oregon — Friday will be cloudy and cooler with occasional light rain showers. Highs top out in the mid 60s with valley winds southwest 5-15 mph.
A potent late spring storm system, tapping into a sub tropical moisture feed will steer a weak atmospheric river at the Pacific Northwest during the day Saturday. In short, Saturday will see steady rain much of the day with valley rain totals nearing 3/4 of an inch. A Winter Weather Advisory for the Cascades will be in effect Saturday night and Sunday morning. 6-12" of snow could accumulate above 4,000 feet.
Sunday is expected to see sun breaks with scattered heavy showers and possible hail with the cold air mass aloft. Monday shows much improved weather with partly cloudy skies and mainly dry weather, but a few showers may develop.
Meteorologist Rod Hill, connect with me on FB
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