We're tracking a few snow opportunities in Massachusetts this week, including snow squalls Tuesday and up to 5 inches on Wednesday.

Millions of Americans are under weather warnings or advisories today as the U.S. braces for a new winter storm this week. A freeze warning is in place for several California counties, according to the National Weather Service (NWS).

A pair of quick-moving weather systems will sweep through the Great Lakes, New England and the Northeast. Travel could become challenging at times. Let's break it down.

The National Weather Service has issued a winter weather advisory for the Sacramento area until Sunday at 4 p.m., with wind gusts up to 55 mph and a 70% chance of rain, and the Placerville area expecting 4 to six inches of snow.

Boston and the rest of New England have been dealing with well below-average temperatures, in some cases falling 20 degrees, as an expansive mass of Arctic air spreads across the eastern half of the United States. This cold surge is making our region this week feel colder than Anchorage, Alaska, which is topping out at 36 degrees.

The coldest temperature ever recorded was Feb. 9, 1934, when it fell to 17 degrees below zero, according to National Weather Service records, which go back to 1904. More: How much snow did Rhode Island get? See snowfall totals for Providence, Newport, Warwick

PROVIDENCE – Up to six inches of snow could fall in Southern New England Sunday afternoon and Sunday night, according to the National Weather Service. There's "increasing confidence in an accumulating/plowable snow" event, although "there is still ...

While a weekend winter storm still remains uncertain, forecasters believe a cold air mass could bring temperatures down to between 10 and 15 degrees early next week.

A coastal storm system approaching New England Sunday afternoon is forecast to drop 3 to 6 inches of snow across the Boston area through early Monday, with higher accumulations of around 4 to 8 inches expected the farther inland you go. A few isolated areas, especially from Springfield to the Berkshires, could see nearly a foot stack up.

A 3.8 magnitude earthquake is on the smaller end of the Richter scale and even for people who may have felt it here in Massachusetts. It’s not likely that there was any damage.

A magnitude 3.8 earthquake struck off the coast of New England mid-Monday morning, sending tremors across the region. The United States Geological Survey confirmed the quake and said it hit offshore at 10:22 a.m. about 8 miles east of Portsmouth, New Hampshire, and about 6 miles southeast of York Harbor, Maine.