Memorial Day Weekend Update

May 21, 2009

snapshot[3]Plenty of rain last Memorial Day weekend…do you remember?  A wild thunderstorm (or actually a cluster of storms) moved through the Metro Area on Saturday evening, producing the greatest 24 hour rainfall on record at PDX.  Nothing of the sort this year…we have some really quiet weather on the way.  I notice there were only something like 5 comments on this blog the last 24 hours!

I just spent some time looking at the 00z GFS.  That plus the 12z ECMWF shows an incredibly stable pattern for the latter half of May and early June.  Not hot, not wet, but just variations in onshore/offshore flow through the period.  An upper-level trough lingers well offshore with ridging to our east.  There are hints of the ridging occasionally pushing back a bit towards the West Coast at times.  That would weaken the onshore flow and warm our temps of course.

Okay, out of time…more tomorrow…Mark Nelsen