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January 19, 2007

Portlandsnow6years_3A good break from the usual grind for the last 4 days…unfortunately it would have been a fun & wild grind for at least 2 of those days (Monday and Tuesday).  So obviously we need a 6-10" snowfall in the next 5 weeks or so to make me feel better.  Of course it would be nice if it was forecast too…

No such thing this weekend with a cold front crossing the metro area right now.  Interesting that it’s having no net effect on our temperatures in the metro area.  The snow level has slipped from around 5,000′ this afternoon down to less than 2,000′ within the next few hours.  If the warm air had worked down to the surface we would have been around 50 today (Salem/Eugene were close to that).  But the cool air has been trapped in the metro area all day though.  Now that the "cooler" air above has arrived with the cold front, our current cool temperatures are about what you would expect with that arriving airmass…so no significant change with frontal passage.

Building ridge overhead the next few days will attempt to shut off the precipitation.  I’m a bit concerned that bad model preformance the last few days will continue through the next 4-6 days.  Basically I’m afraid the ridge could be dirty, allowing moisture through at times.  No strong offshore/onshore flow the next 3 days also means it’ll be hard to get rid of low level moisture, clouds, and fog.  So we can all take a break for the weekend (as I will)…and don’t worry about the weather.

I’ve included an updated snow chart for the last 6 winters here in the metro area.  Looks like it’s the 2nd snowiest of the decade…amazing what 3.5" can do!  Mark