Updated Monday 11:15 a.m.
Round 1 of snow is pretty much done, but now we're watching for maybe a Round 2 as there is potential for another round of snow Monday afternoon and evening with signs pointing to the formation of another Puget Sound Convergence Zone.
A Winter Weather Advisory has been extended until 9 p.m. for the Seattle Metro and Eastside areas for possibly another 1-3 inches of snow, mainly above 300 feet. A similar advisory has been issued for western Whatcom and Skagit Counties for 1-2" possible there, starting after noon.
Just like this morning, again most snow will be above a few hundred feet elevation with just light, slushy accumulations near sea level. The Convergence Zone may reach as far south as South King County by Monday evening. Thus areas outside the main Downtown Seattle core freeways may see slushy or slick roads during the evening commute.
But unlike this morning, the timing coming in the warmer part of the afternoon is working against sea level and low elevation snow. But Convergence Zones can be pretty intense to overcome a few extra degrees. So it's going to be very close on temps where a couple degrees means the difference between what happened in Seattle (i.e.,not a lot) and what happened in Kirkland (about 3").
Outside the zone areas, just scattered rain showers today with highs in the low 40s. It's already in the upper 30s in most areas as of 10 am.
Showers continue tonight and Tuesday morning and overnight lows will once again fall into the mid 30s – returning the chance of wet snow showers above a few hundred feet with minor accumulations. Temperatures will warm into the 40s again Tuesday afternoon.
By Wednesday will be rain showers with highs in the mid 40s and then we get to heavier rains with warmer temperatures toward the upper 40s/low 50s toward the end of the week.
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Today's Record Temperatures