You won't have to --such temperatures will be widespread around western Washington on Monday and Tuesday.
The last day to get above 60 was January 11th (61 was the max). We will smash that number on Sunday.
The latest National Weather Service GEFS multi-forecast ensemble forest for this week shows steadily rising surface air temperatures the next few days, with most predictions getting into the mid-70s.
But those runs are relatively low resolution. Let me show you the higher resolution forecasts done at the UW, and specifically the surface air temperatures at 5 PM each day.
Today? Upper 50s around Puget Sound, warming to the mid-60s near Portland.
This verified well.
Saturday? A step upwards by about 5F. And much cooler over eastern WA.
Sunday afternoon, a few degrees warmer, with particularly warming near the coast, where it will get to around 70F. The reason? Increased offshore flow.
But get yourself prepared for what will happen next. A huge warm-up in virtually all of western WA, with highs jumping into the low 70s.
And even a bit warmer on Tuesday-- I would not be shocked to see some favored locations move into the mid-70s west of the Cascade crest. And really major warming over eastern WA, which should melt a lot of the snow in the Columbia Basin.
This warming is associated with the development of high pressure east of the Cascade crest, offshore flow, and the development of coastal low pressure (the thermal trough)...see figure below. Enjoy.
from Cliff Mass Weather and Climate Blog https://ift.tt/2CmCUO6
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