FastCast--Sunday, May 12 to Friday, May 17:
After two straight days with region-wide 80°+ temperatures, a slightly cooler day is ahead on Sunday, with lowland highs in the mid to upper 70s, with sunny skies. Clouds will increase late Sunday night, with temperatures on Monday decreasing to the low to mid 60s. There is a slight chance of showers on Monday, especially around the Convergence Zone. Only 0.05-0.1" is possible around the region. Mostly sunny conditions will prevail from Tuesday to Thursday, with region-wide highs in the low to mid 70s, warmest on Wednesday. Conditions will get a bit cloudier on Friday, with highs likely decreasing into the mid to upper 60s. Through the week, expect morning lows to be in the upper 40s to low 50s.
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Continue reading the full blog below!
The past two days have brought the warmest temperatures of 2024, perfectly sunny skies, and the most incredible aurora borealis display over the Pacific Northwest in decades!
As we move into the next week, temperatures will decrease from their peak over the past couple days, with clouds and a slight chance of showers on Monday, before a bit of a rebound by Tuesday.
Below is the NWS NBM high-resolution model forecast for highs on Sunday.
Across the lowlands, expect highs in the low to mid 70s, with the coast reaching the low to mid 60s, and the Willamette Valley reaching the upper 70s. Eastern Washington will still be quite warm, with highs in the low 80s around Spokane and the mid 80s to low 90s in the Columbia Basin and in area valleys.
However, change is ahead Sunday night into Monday, as clouds move in west of the Cascades, and as temperatures cool to the east. Below is the NAM high-resolution forecast for wind gusts through Monday afternoon.
Notice that westerly winds through the Strait of Juan de Fuca will gust 40-45 mph, with gusts of 20-35 mph on the coast, and from Seattle northward. Eastern Washington, particularly the east slopes of the Cascades and the Kittitas Valley, will have gusts of 40-45 mph.
Temperatures will decrease substantially for the lowlands on Monday, with temperatures across the state taking a dip from Sunday. Below is the NWS NBM high-resolution forecast for Monday's highs.
On Monday, lowland highs will only reach the low to mid 60s, with highs in the Willamette Valley in the upper 60s to low 70s, with the coast only in the upper 50s to low 60s. Eastern Washington will be significantly cooler, with highs dropping to the mid 70s to low 80s.
There is also a chance of showers on Monday, as seen below in the European model forecast.
Notice a potential Convergence Zone band stretching across the North Sound, with areas of showers along the coast, in the Cascades, and around the lowlands. Rain will only total 0.01-0.1".
However, there is a rebound in temperatures expected starting Tuesday. Below is the NWS NBM high temperature forecast.
On Tuesday, the lowlands will be in the upper 60s to low 70s, with the coast back to the low to mid 60s, the Willamette Valley in the mid 70s, and Eastern Washington still in the mid 70s to low 80s, with isolated areas reaching the mid 80s.
Wednesday will likely be the warmest day of the week, as seen below in the NWS NBM forecast.
On Wednesday, expect highs in the lowlands reaching the low to mid 70s, with the coast reaching the low to mid 60s, the Willamette Valley reaching the upper 70s to low 80s, and Eastern Washington reaching the upper 70s to low 80s around Spokane and mid to upper 80s around the Columbia Basin and the mountain valleys.
Conditions past Wednesday will likely be partly cloudy to mostly sunny, with highs generally in the mid 60s to low 70s, although the exact details of the coming pattern are still uncertain.
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Friday night to Saturday morning was the most significant aurora borealis display since 2003, and one of the best-viewed auroras ever in the Pacific Northwest! Below is my photo from Seabeck, WA, looking north over Seabeck Bay, taken around 11:15 PM Friday.
Just like thousands of others across the Northwest, I was blown away by seeing the aurora for the first time, and it was truly an amazing experience!
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