Mid-March Weather Slowdown

March 8, 2007

Wow…only 9 comments in 24 hours!  Hard to believe that a cold spell or near-miss snowfall can bring in 800 posts in one day.  Must be slow weather and sure enough…it is!  Wavy looking front offshore looks pretty weak.  I sure didn’t expect the radar to be dry at 11pm.  00z models are insistent on pushing rainfall inland before daybreak so let’s plan on a wet morning drive.  Another system arrives midday Saturday and develops into a steady stream of rainfall aimed at Washington late Saturday through early Monday.  At some point the band of rain lifts north…possibly during the daytime Sunday. If so, our temps in the metro area would easily jump into the 60’s with a very warm airmass overhead.  Then the whole thing drops down through Oregon Monday and early Tuesday.
Long range models are now in a bit more agreement on some sort of warm ridging beginning Sunday.  Amplitude of the ridge will determine whether we get a sharp thermal trough and warm east winds (70 degrees or higher?) or just flat surface gradients for temps in the 60’s.  But that’s 7 days away, so LOTS could change before then…Mark