Saturday, December 17, 2011

Strong Inversion and a Possible Record Dry December.

This month has been very dry so far.
Here are the top 10 driest Decembers on record in Portland.
 Year / December Precip
2011 / 0.06 (through 12/16)
1876 / 0.88 
1976 / 1.38 
1944 / 1.90 
1985 / 2.19 
1988 / 2.37 
1990 / 2.40 
1978 / 2.51 
1914 / 2.56 
1984 / 2.56 
and this pattern just does not want to break down, the image below shows a big ridge of high pressure over the area all the way to next Saturday.  
As for today there is a really strong inversion overhead here is an image of today's SLE(Salem) sounding
It's 14.2degrees C (58F) at 900mb (3,200ft) while its near freezing in the valley.
Also up at Timberline Lodge its 52 degrees as of 12:00PM
 bottom line is that there will be a few days with light rain this week but it will stay mostly dry.
For skiers and snowboarders:
Timberline Forecast:
 Sunday: A 50 percent chance of snow showers, mainly before 4pm. Mostly cloudy, with a high near 34. West northwest wind between 8 and 13 mph. Little or no snow accumulation expected. 

Sunday Night: A 20 percent chance of snow showers, mainly before 10pm. Mostly cloudy, with a low around 26. Northwest wind 7 to 9 mph becoming east northeast. 

Monday: Mostly sunny, with a high near 34. East northeast wind around 6 mph becoming northwest. 

Monday Night: Mostly cloudy, with a low around 25. 

Tuesday: Mostly cloudy, with a high near 36. 

Tuesday Night: A chance of snow. Mostly cloudy, with a low around 25. 

Wednesday: A chance of snow showers. Mostly cloudy, with a high near 28. 

Wednesday Night: A slight chance of snow showers. Mostly cloudy, with a low around 22. 

Thursday: Partly sunny, with a high near 32. 

Thanks for reading
-Michael

4 comments:

  1. I think it would help if you simplified this a bit, for us non-weather knowing layman folks. Strait to the point, kind of like at the bottom.
    And the bright bright red is really hard to look at, otherwise nice job man.

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  2. pretty good blog. I just think its hard for me to understand some things like igor already said. Especially these diagrams are very confusing and I dont even get what they mean. Would be nice to just make it more simple so that people like us who dont know much about how all of it works could visit the blog and not be all confused. Straight to the point is better.

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  3. OK guys I will do my best to simplify the posts from now on.

    ReplyDelete