As arctic air invades the United States, temperatures are expected to tumble. Most locations east of the Rocky Mountains are in for colder than average temperatures for the rest of the week.
Brisk wind will impact many areas as well. In particular, the Midwest and Northeast can expect that classic wintertime combination of cold air and gusty wind. Wind chill values will come into play over the next several days.
What is “wind chill,” you might ask? The National Weather Service officially defines “wind chill” as a measure of the effect of increased wind speeds that accelerate heat loss from exposed skin. No specific rules exist for determining when the wind chill becomes dangerous. For most people, the threshold for potentially dangerous wind chill conditions is about -20°F.
The National Weather Service Wind Chill Temperature (WCT) index uses advances in science, technology, and computer modeling to provide an accurate, understandable, and useful formula for calculating the dangers from winter wind and freezing temperatures. The Wind Chill Calculator is also a useful tool to find a specific wind chill value.
How cold will the rest of your week be? Find out with your local forecast here.