Snowy Mountains

March 25, 2009

Snapshot  Another snowy day up on Mt. Hood today;  I was a bit surprised to find the monthly total already at 84" at Government Camp.  That's the highest since 1977 for March.  It's interesting that Portland rainfall is slightly below average at the same time.  This is quite similar to what happened last Spring…drier than average in the lowlands (and chilly), but wetter than average in the mountains.  This is due to strongly orographic weather patterns through the spring.  For example, did anyone notice the rainfall totals today?  .01" at Hillsboro, about .15" at PDX, .35" at Troutdale, and .90" or so at Sandy.  So much heavier rainfall (and eventually snow) was squeezed out as the northwest flow ran into the foothills and Cascades.

There's no indication of any significant change in the weather during the next 7 days.  Three more strong troughs drop through the Pacific Northwest after riding over the top of an east Pacific ridge.  They arrive on Saturday, Monday, and Wednesday (of next week).

We do get a nice break tomorrow and Friday as a warm front lingers nearby.  That gives us a lot of cloud cover, but I think we'll mostly avoid rainfall both days.  With such thick cloud cover temps likely stay below 60 degrees.

This blog has been REALLY quiet the last two days, which makes me wonder if most of us are just tired of the current cool and wet weather pattern.  I have a feeling most of us would prefer warmer and sunnier weather, or at least stormier conditions.  Or maybe Oregon's Spring Break has disrupted the usual web-surfing activities?  Mark Nelsen