Introducing The_Weatherman2 FastCast: A short summary of upcoming weather so you’ll be prepared for what’s ahead. You'll find the FastCast at the start of each blog!
FastCast—Tuesday, Sept. 21 to Sunday, Sept. 26:
Expect clouds to increase overnight Tuesday. There is a chance of light showers on Wednesday, and highs will be in the mid 60s. Sun returns by midday Thursday, with sunny & pleasant conditions persisting through Saturday. Expect highs of 70-77 degrees, warmest on Saturday! Rain returns with our next system late Sunday.
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Continue reading below for today's blog!
Tuesday was warmer than average across most of the Pacific Northwest. Highs in the Puget Sound area reached the mid-upper 70s, with some areas hitting the low 80s. In the Willamette Valley, highs were in the mid 80s. Surprisingly, these 80-86° highs were comparable to highs on the Washington and Oregon Coasts!
A weak system is moving toward the Pacific Northwest that will bring showers to the area on Wednesday. This system created offshore flow due to wind flowing toward lower pressure offshore. These were downslope winds. The National Weather Service graphic below shows the effect of downslope winds.
The warming effect was clearly visible today on the coast. Let’s take a look at Tuesday’s recorded highs.
81-85 degrees on the Long Beach Peninsula, 80-82 near Astoria, and 73-79 around Aberdeen & Ocean Shores! These highs were 5-10 degrees warmer than the Puget Sound area and on par with the Willamette Valley.
This event was forecast by the models. Below is the UW surface temperature forecast from Monday night’s model. This forecast was for 3 PM Tuesday.
The downslope warming effect can be seen in the forecast, with warmer temperatures (mid 70s to mid 80s) downstream of the Cascade gaps and along parts of the coast.
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