Mountain Monday: Outback Oregon   4 comments

Winter begins by dusting the Pueblo Mountains of southeastern Oregon.

Winter begins by dusting the Pueblo Mountains of southeastern Oregon.

I posted Friday on photography around stormy weather but neglected to include snow.  Good images are really difficult to get when it’s snowing heavily.  So let’s follow up and correct that error.  This is an image where the snow had just fallen on the mountains but never really reached me.  It was early morning and I was hoping for the mountains to show themselves.  It was chilly so I though maybe there would be snow, but I was surprised there was so much.

I was in what is called Oregon’s “outback” (apologies to Australia).  Southeastern Oregon is very thinly populated and is wide-open high desert.  Geologically, the mountains are fault-block type.  This simply means that they were formed by high-angle faults which throw one side down (becoming the valley or basin) and one side up (forming a long relatively narrow range).  It’s also known as basin and range terrain and continues south through most of Nevada and east to the Wasatch Mountains of Utah.

The reason I didn’t get snowed on is because of the “rain shadow effect”.  This is when rain or snow is essentially blocked by a mountain range.  The clouds are lifted by the mountain slopes, cooling the air and causing precipitation.  When the air descends the lee side of the range, it warms and dries, leaving little or none of the wet stuff for the valley beyond.  In areas where the weather pretty much comes from one direction, there can be very dramatic differences in vegetation between the windward and lee sides of any range that runs nearly perpendicular to the direction of prevailing winds.

Enjoy your week and Happy Labor Day to my fellow Americans!

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4 responses to “Mountain Monday: Outback Oregon

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  1. Beautiful. I love how the clouds blend into the mountains!

  2. The light in this landscape is incredibly beautiful, Michael. Fantastic capture.

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