Monday: Last Warm & Dry Day

March 29, 2015

10pm Sunday…

You’ve got less than 24 hours to finish up any projects that need more than a few hours of dry weather. I see a long stretch of cool & wet weather beginning tomorrow night.

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It really does look like payback time for the unusually warm end to winter (February) and start to spring (March).  The latest numbers for this warm period are amazing…

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A quick look further back in time shows only in early spring 1992 did we have as many 60 degree days as we’ve seen this year!

Our persistent ridge of high pressure that’s been sitting overhead or to the west of us for the last few months is going to take a break.  It appears the ridge is going to disappear for at least the first half of April.  That doesn’t mean the rest of spring will be cold and wet, we don’t know that.  It just means we’ll make up some snowpack in the Cascades.  Too late to salvage the ski season of course now that Spring Break has finished and we move on to warm weather activities, but it will help the drought situation in some spots.

How much rain ahead?  The GFS model shows around 2.00″ over the next 10 days.

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ECMWF model isn’t quite as wet, more like 1.00-1.50″.  Both are wetter than normal for this time of year.

Chief Meteorologist Mark Nelsen