FastCast—Tuesday, Nov. 8 to Friday, Nov. 11:
After a wet and active past couple weeks, a colder and much drier pattern is ahead for Western Washington. Through Tuesday morning, strong NE Fraser Outflow winds will gust 40-50 mph in Whatcom and San Juan Counties, bringing wind chills of 15-25º. Northerly winds will gust 20-30 mph around the lowlands, strongest near the water. Wind chills in the lowlands will be in the upper 20s to low 30s, with some localized areas of wind chills in the mid 20s. Over the next week (and likely beyond), persistent high pressure ridging will bring dry and chilly weather to Western Washington. Lowland highs will reach the mid to upper 40s (some locations only in the low 40s), with the lows in the upper 20s to low 30s. Additionally, some morning fog is possible, with a chance of freezing fog. An inversion event is possible, which could bring stagnant air, but that’s uncertain at this time.
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Continue reading the full blog below!
A much different pattern is ahead for Western Washington, with much colder and drier weather.
Below is the NAM forecast for low temperatures on Wednesday morning, a good indication of low temperatures for each morning this week.
Expect lowland lows in the upper 20s to low 30s, with areas near the water staying in the mid 30s. Eastern Washington will drop to the mid to upper 20s in the south and the frigid upper teens to low 20s in the north.
Daily highs will only reach the 40s, with cold mornings limiting afternoon highs to the mid 40s.
Offshore winds will be present on Tuesday, with biting northerly winds in the lowlands gusting 20-35 mph. The HRRR forecast for wind gusts at 5 PM Tuesday.
Northerly gusts in the lowlands will reach 20-35 mph, strongest near the water. By Tuesday evening, Fraser Outflow winds will be decreasing down to 30-35 mph in Whatcom and San Juan Counties.
Biting winds overnight will bring cold wind chills to the lowlands by Wednesday morning, likely down to the mid to upper 20s, with some areas having low 20s wind chills.
For the extended forecast, a much different scenario is playing out than the past couple weeks. This is clearly seen in the NWS Climate Prediction Center outlooks below.
The first outlook is the temperature outlook for November 13-17.
A period of very cold weather is ahead east of the Rockies, as seen by the 90-100% probability of below average temperatures there. For the Pacific Northwest, there’s a 50-70% probability of below average temperatures into the second week of November.
The outlook for precipitation (for November 13-17) even more dramatically shows the dry pattern ahead.
There is a 60-70% chance of below average precipitation for Western Washington, quite abnormal for November.
Blog note: I will not be blogging until late Thursday or Friday, as I will be traveling. For updated forecasts, follow our local meteorologists and weather experts on Twitter & local news.
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