Generally Dry

Meteorological Fall starts today.  As stated previously, it looks like the 1st half of September will be mostly dry & relatively warm.  That said, a short heat-up is targeted for this week.  Grab your Mug - it’s time.

A morning marine cloud deck is well established across much of the west side of the Cascades, as Labor Day gets started.  The sun will burn the layer off, for a pleasant afternoon.  Tomorrow & Wed are going to be HOT, with temps in the 90s in many locations; upper 80s around the Puget Sound.  Temps should cool down a few degrees late week, as an onshore flow begins to return, so too will be a few thunderstorms along the OR Cascades. Fire risk will jump up.

This weekend - Sep 6,7 - is looking so so.  No consistent pattern on the charts.  The computers haven’t solved for the position of a Low off the coast AND just how much moisture may train north from a Pacific tropical storm charting to move near to or over portions of ’The Baja”.   An upper air flow pattern may drive monsoonal moisture northward, impacting the eastern basins of the PNW and setting off thunderstorms this weekend.  West side locations should not be damp, but we would not rule that out just yet.  Temps will be comfortable.

Week of Sep 8-12 continues to trend partly cloudy by Tue or Wed, with chance for a shower - primarily over the Sound - from a weak trough (Low) dropping in from the BC coast.  Warming late week, offering a decent pattern during the 4 day run of the 60th Mt Angel Oktoberfest. then warming up late week on into the weekend of Sep 13,14.

Week of Sep 15-19:  Dry with temps in the 80s in most locations; warmer in southern OR / eastern basins.  

Ponder Point - early indications of a general pattern shift late that week, with a strong ‘jet stream’ developing to drive Pacific storms into the PNW after the 20th or 21st.  Again, just a consideration.