Fall REALLY Arrives Next Week

September 25, 2009


I’ve shown this image in previous posts;  it’s the 6-10 day forecast 500mb heights and deviation from average.  You can see the negative anomaly centered over the northern Rockies.  This is quite a change from what we’ve seen the past few weeks.  Basically the Western USA is going to get a sudden cool down next week.  We can turn off the sprinklers and garden soaker hoses.  That’s a combination of much cooler temps plus off/on rain beginning Monday or Monday night.  You definitely need to enjoy the sunshine this weekend.  Sunday looks perfect with strong offshore flow (gorge east wind).  WRF-GFS cross section shows 35-40 kt. wind well above the surface Sunday PM.

I’ve been a bit lazy blogging the last few nights…under the weather, especially tonight.  Feels like some laryngitis approaching…

Chief Meteorologist – Mark Nelsen