Thursday, October 15, 2009
Just a brief heads up about fairly heavy precipitation that will hit on Friday and Saturday. Take a look at the latest high-resolution (4 km WRF) 24h precipitation ending Friday and Saturday at 5 PM. A plume of moisture associated with a Pacific front will slowly move southward over the region. Black indicates 2-5 inches over 24h. Both the SW Olympics and the central Cascades get hit fairly hard. This is NOT equal to one of the major pineapple express events, but the first major mountain rains of the season.
The Green River watershed will get significant rainfall from this event. Nice rainshadow NE of the Olympics. The front moves through later on Saturday and Sunday bringing showers and a strong convergence zone north of Seattle. More later--have to teach 101 now.
I am canceling my hike on Saturday! Time to head to Sequim.
Posted by Cliff Mass at 6:59 AM