weather

The term “polar vortex” usually refers to the gigantic circular upper air weather pattern in the Arctic region, enveloping the North Pole. It is a normal pattern that is stronger in the winter and keeps some of the coldest weather bottled up near the North Pole. But at times some of the vortex can break off or move south, bringing unusually cold weather south and permitting warmer weather to creep up north. This week, parts of the U.S. are experiencing the 10th and coldest polar vortex event this season. Weather forces in the Arctic are combining to push the chilly air that usually stays near the North Pole into the U.S. and Europe.

Parts of southeastern North Carolina have been deluged by another historic flood. Highways in Brunswick County remained underwater Tuesday, a day after about 18 inches of rain fell at nearby Carolina Beach in 12 hours. Emergency workers brought food and water to people as they waited for the flooding to recede. But the same area has seen four other floods of a lifetime in the past 25 years from Hurricane Floyd in 1999, unnamed storms in 2010 and 2015, and the benchmark flood with 30 inches of rain from Hurricane Florence in 2018. Meteorologists says warmer temperatures from climate change allows the air to hold more moisture and heavier rains to fall.