Chilly Evening!

September 9, 2008

Snapshot I keep forgetting to mention this on the blog.  In case you didn't know it, the meteorologists here at KPTV do school visits each week.  We take a 45 minute presentation to just about anywhere wihin about 30 miles of downtown Portland.  OCCASIONALLY a bit farther away.  I'm planning a "Valley Day" and a "Lower Columbia" day this year.  I'll try to hit 4 schools in those areas in just one day.

Moving on to the weather…it's getting chilly out there quickly!  I notice PDX is running 14 degrees cooler this evening.  Also some cloud cover sliding south out of S.W. Washington.  I'm not too concerned about either one, although hopefully my low temp forecasts aren't too high.  This is from a shortwave trough sliding south out of Alberta and into Western Montana.  This heads off to the S.E. tomorrow, with surface high pressure building in behind it.  That turns our flow back to offshore/easterly by tomorrow evening and Thursday.  Then another wave shifts flow back to onshore Friday and Saturday.  A bit of a see-saw with the pressure gradients for sure.

Models are very consistent on a much stronger and warmer thermal trough forming near or at the Coast Sunday-Monday.  Depending on the positioning, this could bring the 80-90 degree temps to the beaches Sunday.  Something to keep an eye on.

The posting times are going to change since my shift has changed slightly.  Most nights I'll be leaving right after the 10:36pm weathercast since I'm coming in a bit earlier for our 4-6pm newscasts.  So…I need to post a bit earlier.  We'll see how it goes…Mark Nelsen