Not a bad 18z run on the euro but sharp cut off in Oregon.

This would be pretty sick.

True, maybe not for SeaTac. But I think my area and east towards the foothills could've pulled it off (115-120 range). Just needed the easterly flow to keep descending.

I think the Puget Sound existing as it does will perma-lid temps on the Seattle ismuth to around 110-115, barring some RPC4.0 tier thermal reworking of the ocean-atmosphere heat budget. The GFS was smoking some low-res pack when churning out those runs.

I would venture a guess that 120 anywhere near the Sound isn’t practically possible. There’s too much localized sea breeze potential despite deep offshore flow as occurred on the 28th. With such an insanely hot air mass it would be D**n near impossible to not have some manner of a low level reversal. In the end though, one of the most impressive readings to me was that evening when KSEA was still 98 degrees at 10pm just before the big reversal. Wacky.