Tuesday, December 6, 2011

Big Inversion.

Why has it been so cold lately? The reason is there is a big yet thin inversion over us causing all this fog and bad air quality.
A good example of this inversion is, today at noon the temperature at Portland airport was 35 while at the same time Timberline lodge was 48. The high at PDX was only 36 today and in Battle Ground here I got a high 33!
Here in the image below are the KPTV tower temps.
As you can see the temp on the bottom sensor is almost 20 degrees cooler then the one on top which is completely opposite of how it normally is.
This inversion has also given us a lot of dense fog and at night freezing fog so be careful driving in the mornings.
The image below is a great shot of the inversion today taken by Tyler Mode.
This was taken from Silver Star Mt. and below you can see the Vancouver metro area socked in with fog.
As for the forecast Saturday looks to have a small chance of some rain but the rest of the week will be dry.
For skiers and snowboarders:
Timberline forecast:
Wednesday: Mostly sunny, with a temperature rising to near 34 by noon, then falling to around 26 during the remainder of the day. Northwest wind between 10 and 13 mph. 

Wednesday Night: Partly cloudy, with a low around 23. North wind 8 to 13 mph becoming east. 

Thursday: Mostly sunny, with a high near 38. East wind around 10 mph. 

Thursday Night: Mostly clear, with a low around 25. East southeast wind around 8 mph. 

Friday: Mostly sunny, with a high near 35. 

Friday Night: Mostly cloudy, with a low around 21. 

Saturday: Partly sunny, with a high near 30. 

Saturday Night: A slight chance of snow showers. Mostly cloudy, with a low around 19. 

Sunday: A chance of snow showers. Mostly cloudy, with a high near 27. 

Sunday Night: A slight chance of snow showers. Mostly cloudy, with a low around 19. 

Thanks for reading 
-Michael  

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