The Northwest could see a year's worth of snow this weekend

Portland snow

The forecast as of Saturday morning didn't rise to the level of an advisory being issued for Lehigh, Northampton or Warren counties, but winter weather advisories are in effect as far north as Upper Bucks and Hunterdon counties from 1 p.m. Saturday to 10 a.m. Sunday. However, the bulk of the accumulations will not occur until Sunday night into Monday. Light amounts of snow may be added throughout the day. The Thursday and Friday storms could have similar effects, Martin said.

Another storm system may hit southern New England late Monday into Tuesday, bringing several inches of snow as well as mixed precipitation and ice to MA, though the forecast is subject to change more than 72 hours out. "At least 1/4" to 1/2" of ice is expected in the ice storm warning area, but some areas could receive up to 3/4".

Weather service models are not in full agreement how much of the precipitation will fall as rain, freezing rain or snow and in what locations. This comes on the heels of the 1 inch snowfall Portland received on Thursday.

The freezing rain will turn lighter and more scattered this evening. Northeast wind around 5 miles per hour.

As much as 2 to 3 feet of snow is forecast to accumulate there by Valentine's Day, making for tricky travel conditions for anyone who plans to drive across the mountain passes in the region. The main factor will be the influence of cold air coming from the gorge.

February 12 snow ice event maps
Maps of predicted areas for snow ice through Saturday. NOAA

Although unseasonably cold air is forecast to linger around into Valentine's Day, it's not known just how cold the air mass will be and if it could be enough to support low elevation snow for Portland and Seattle.

The first round of potential winter precipitation could arrive late tonight into Saturday morning and mainly affect northwest Alabama.

It will start as freezing rain, and will likely turn to plain rain during the day.

These totals are dwarfed by the forecast totals across the higher elevations of the Cascades in Washington and northern Oregon.


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