Out with one low...in with another.
The thunderstorm threat temporarily took off as one area of upper-level low pressure moved off to the east overnight, but that threat will increase once again -- especially Monday -- as a new upper low slides south from British Columbia.
Due to its' counter-clockwise circulation, this new upper low has helped increase the onshore flow. That has led to widespread cloud cover this morning, with many areas of drizzle being reported. The marine layer is thicker today, so there will be little if any sunshine this afternoon. Daytime high temperatures will stay in the mid-60s, 10 degrees cooler than normal. There is a very small late-day thunderstorm threat, mainly north of Everett closer to the low.