The usual, 4 maps of the upcoming 4 weeks off last night’s 00z ECMWF. Trend remains similar to what we saw from Sunday night’s runs: Cool troughing through the next 2 weeks, then more ridging over most of North America with the West Coast on the western edge of that…I interpret that as “warmer rainy weather”. Probably no “near snow” setups beyond mid March if this is correct.
Week1

Week2

Week3
Week4


A inch of snow works for me!
National Weather Service Portland or
228 PM PST Friday Feb 24 2012
A very cold airmass will remain parked over the area as a secondary shortwave moves through Sunday. Showers will be enhanced late Sunday
morning through and Sunday evening with this disturbance. Snow levels will be especially low…with possibly sticking snow in the
Willamette Valley. In areas where the snow will stick…snow amounts
will be low…less than an inch…with breaks between the snow
showers.
Pretty healthy band of showers incoming!
http://www.wunderground.com/wundermap/?lat=45.49828720&lon=-122.69132233&zoom=8&pin=Portland%2C%20OR
Not sure why that link didn’t work…or maybe it did for someone!
A bright sunny morning with a low of 29°.
Better batten down the hatches!!
http://cliffmass.blogspot.com/2012/02/lowland-snow-showers-cold-air-and.html
Cold weather and snow showers works for me!
National Weather Service Portland or
913 PM PST Thursday Feb 23 2012
Generally…expect cold
air and snow showers in lower elevations..
Really like this thought!
Another thought…here’s the 12z 4km WRF-GFS snowfall forecast from 4pm Saturday to 4pm Sunday. When I start seeing “fingers” of snow moving out into the valley hills as I see here, that’s when we get very close to sticking snow in the lowest elevations.
As per our resident expert, Mark Nelsen.
Let’s shoot for a late March heat wave, as in 3-5 days in the mid 70s!!!
Cool! Thanks for posting the new maps, Mark.