National Weather Service (NWS) meteorologists have issued winter storm warnings and winter weather advisories for 13 states as of Thursday morning as winter storms unleash impacts across the Northern Plains, Midwest, and Northeast.

The winter storm watch previously issued for Greater Cincinnati has been upgraded to a warning, as more snow is expected Saturday night.

A long-awaited blast of cold air, courtesy of the polar vortex, will overtake much of the US, but the forecast says the low temperatures won't last.

A strong geomagnetic storm is forecast for Tuesday, according to the National Oceanic and Atmospheric Administration's Space Weather Prediction Center.

A storm system is expected to reach Massachusetts just before the weekend, bringing heavy rain and gusty winds, according to forecasters.

A quick-moving system will bring at least an inch of snow to Greater Boston and areas south, making for a snowy Patriots-Bills matchup.

Widespread snowfall totals of 1 to 5 inches are expected across New Jersey with more than 5 inches possible in some counties.

On Monday at 1:27 a.m. the NWS Seattle WA issued a winter storm watch valid from Tuesday 10 p.m. until Wednesday 10 p.m. The watch is for Cascades of Whatcom and Skagit counties, Cascades of Snohomish and Northern King counties,