Weird October Temps

October 14, 2011

We’re at the halfway point for the month; and it’s confirmed why I find it to be the most boring month of the year weatherwise (most years).

The frequent passage of weather systems and/or cloud cover has kept our temperature range quite small.  Our average temperature for the month is perfectly normal.  But daily highs have been well below average.  And overnight lows have ALL been above average.  We’ve seen no extremes, no big storms (or T’Storms), no decent period of nice weather, and rainfall has been a little above average…Dullsville.   That’s the main reason I haven’t been posting much.

The disastrous two forecast days (dry turns to rain) haven’t helped the mood much either.  A weak front sitting over the top of us has not been modeled well either in location or strength.  Models continue to show clouds breaking up and a dry weekend ahead.  We’ll see…

One item of interest is a strong easterly wind coming up Monday night through Tuesday.  A late season thermal trough develops along the Pacific Northwest coastline during that time as surface high pressure sinks down over the Rockies.  WRF-GFS shows 7-8 millibars easterly gradient across the Cascades…enough to give peak gusts around 50 mph at the west end of the Gorge like we saw a couple weeks ago.  Could be our first 70 mph at Vista House too.  This could be our last mild/warm east wind event of the year; once we get past Halloween the same high pressure will be cool and inversions set up east of the Cascades.

Enjoy the (hopefully) dry weekend!

Chief Meteorologist Mark Nelsen