Thunderstorm Update Monday

August 7, 2006

Drew did a very good job forecasting the extent of the storms this afternoon & evening!  Several storms tried to develop over the Valley, but only a strike or two near Amity & Corvallis.  All other lightning strikes were over the Cascades today and I expect it to stay that way overnight.

Much more impressive is the massive marine push in progress.  North Bend to Portland pressure gradient peaked out at 7.5 mbs. this evening!  That’s similar to a strong south wind situation in winter.  And the North Bend to Spokane gradient jumped from 3 mb. yesterday evening to 11 today.  Obviously it’s going to be much cooler tomorrrow.

The upper-level low kicking out to NE Oregon tomorrow evening should put most of the big storms up there by afternoon…Mark