We are tracking multiple systems to impact the Northeast and Great Lakes through the weekend. Round 1 will be an arctic front that will blast across the region Wednesday into Thursday. Precipitation will start as rain early Wednesday and then change over to snow Wednesday night into Thursday. Widespread accumulations look likely, with the highest totals expected across the lake-effect snow belts and the higher elevations across New England. Watch this video to see how much snow could fall.

La Niña is likely to collapse mid-winter, according to NOAA’s Climate Prediction Center, weakening the typical winter effects. A transition to El Niño could happen this summer.

After record December storms collapsed roofs and sank boats, Juneau, Alaska, had been racing to dig out from a fresh round of heavy snow before the rain arrived. Two small avalanches have been triggered so far. Here's the latest.

An arctic front is set to bring the coldest air of the season to parts of the Southeast. Scattered showers and storms will be possible Wednesday into Thursday as the front moves in from the northwest. Rain will change over to snow across the higher elevations of the Appalachians in western North Carolina and western Virginia. Watch this video to see how low temperatures go.

As Victoria, Australia, is engulfed in wildfires fueled by a heat wave, some Australians are fighting back. Luke Humphrey took this video while commandeering construction equipment to demonstrate “an example of when ordinary Aussies take initiative and act without hesitation in times of need.”