A Slow Thursday Evening

July 17, 2008

Snapshot[1] Well, we have a moderate onshore flow, no heat wave in sight, and no rain showing up on the maps either.  Add to that no good chance for thunderstorms in the near future and you get a very slow weather evening.  Even the fire situation has improved with only 4 major fires ongoing in Oregon and Washington.

This morning’s low cloud cover inland was limited to mainly east of I-5 north of and Oregon City to Sandy line.  It should be a different story Friday morning, I see Longview had clouded in by 10pm and temps are running a few degrees cooler this evening too.  I still don’t think it’ll be a marine layer up to 3,000′ which can take most of the day to evaporate.  So I’m planning on a noon breakout at the latest here in the metro area.  The westside may still have limited cloud cover.

Saturday through Monday:  Rising heights in the upper atmosphere should keep the marine layer lower and closer to the Coast.  Temps should make it into the 80s as a result.

Tuesday and beyond:  A bit lower heights and troughiness offshore spell another period of morning clouds/afternoon sun.  It doesn’t look like last summer where a sharp trough lingers near the West Coast…for now.  Mark Nelsen