Weekend Weather Brief

Time and Day:  0200 Sunday

A progressive weather pattern is beginning to enter the PNW with heavy precipitation, high winds and 4-5000’ freezing levels expected through the middle of next week.

Now:

A frontal system is currently moving onshore with moderate to heavy rain pounding the coast.   Just a few isolated showers are making it to the mountains thus far.   The precipitation is being pulled in from the SW which will place the freezing levels around the 4700’ mark through the night.

Weak ESE flow will try its best to keep most of the precipitation in the form of snow.  The east flow isn’t that strong and more out of the southeast than the east, so time will tell.   Cooler air aloft is expected to move in tomorrow morning which will aid in the snow favoritism.  

The winds will show up tomorrow afternoon (4 pm ish) as the next trough prepares to enter the mountains.  Models have the 5000’ winds in excess of 40knots.  

The pattern remains progressive with the biggest portion of precipitation happening on Tuesday and Wednesday. 

Storm totals:   

Water by 4pm Monday = .25-.5   Snow =  2-4”

Water by 4pm Tuesday =.5-.75   Snow =  3-6”

Water by 4pm Wednesday =   1-2”  Snow – 7-12”

The Long Range:   Because it is still mid-November we should expect the freezing levels to rise at some point.  This will be the case heading into next weekend.  Long range models have the freezing levels peaking near 8000’ on Sunday/ Monday.  This is a loooong ways out, so in the meantime, enjoy the early season snow. 

jM