NEW: Western Wildfire Season 2021 Northwest Pacific Heat Wave Western Drought 2020-2021 Graphic: Increasing Frequency of Extreme Snowfall Events, Central Park (1869-2017) by National Weather Service Related Events Eastern US Arctic Invasion and Winter Storm January 2018 Northeast Blizzard March 2017 Polar Vortex Dip and US Arctic Invasion March 2019 Polar Vortex Split and Eastern US Arctic Invasion January 2019 Related Climate Signals Winter Storm Risk Increase
