Our final weather day of winter will feature sunny skies, dry conditions and continued mild temperatures as an area of high-pressure remains in place. Tuesday will also be a dry day, the driest of the forecast as we sit in-between weather systems. Wednesday through Friday night an upper level trough with an associated closed low will drop south off the British Columbia coast Wednesday and put the region in an increasingly moist southwest flow aloft.
The wettest period appears to be Wednesday night into Thursday as the cold front tracks from west to east through Northcentral Washington. Most of the precipitation will fall along and ahead of the cold front showing the highest precipitation totals from this storm in the Methow Valley, Lake Chelan, and surrounding mountains with 1-1.5 inches of liquid precipitation possible. A strong cold front passes on Thursday, Eastern Washington around the Palouse and Spokane area will see increasing winds with up to 40 mph gusts possible in those areas.
On Friday and Saturday a cool and showery air mass moves over the region dropping our afternoon high temperatures down to around 50. As we return to sunny skies on Sunday, temperatures will remain below average Sunday into early next week with highs only in the upper 40’s with localized readings into the mid 50s in the Columbia Basin.