Here is an example of how models flipped
Here is the 12z GFS-WRF from Wednesday
This shows arctic air right over the Portland area
Now here is yesterdays 00z GFS-WRF
It shows the arctic air far to our northeast
Now here is today's 00z GFS-WRF
arctic air is a little closer but still not close enough
What is the reason for it not being close enough? The reason for this is a strong westerly jet is causing a small upper level low north of Hawaii to go farther west and not allowing the upper level high to move east.
bottom line is an arctic blast is not looking likely but just cooler temps and dry conditions will occur.
here is text output of the 00z GFS
Very dry all the way till the 15th
For skiers and snowboarders:
Timberline forecast:
Saturday: Sunny, with a high near 35. East northeast wind between 7 and 9 mph.
Saturday Night: Clear, with a low around 21. North northwest wind between 6 and 8 mph.
Sunday: Sunny, with a high near 29. Northeast wind around 11 mph.
Sunday Night: Mostly clear, with a low around 21. Calm wind.
Monday: Sunny, with a high near 34.
Monday Night: Mostly clear, with a low around 26.
Tuesday: Sunny, with a high near 37.
Tuesday Night: Mostly clear, with a low around 26.
Wednesday: Sunny, with a high near 33.
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