A warm air mass from the west coast of Africa shattered thousands of temperature records across Europe, The Washington Post’s Capital Weather Gang reported. The first week of 2023 also brought record-breaking warmth to Europe. Many areas saw temperature swings that ranged from roughly 20☌ to 40☌ (36☏ to 72☏) between the heights of the cold spell on December 23 and the warm spell on December 30.Ĭontinental United States surface temperature on December 23 and December 30, 2022. The daily cycle is less visible over water because water more easily retains heat and maintains a more consistent temperature. became apparent toward the end of the month, especially in the week before Christmas. The short pulses reflect daily daytime warming and nighttime cooling, but the spread of cold Arctic air south over much of the U.S. The darkest reds show areas with the warmest surface temperatures blue areas show areas with the lowest surface temperatures. It was produced by combining satellite observations with temperatures calculated by a version of the Goddard Earth Observing System (GEOS) global model, which uses mathematical equations to represent physical processes in the atmosphere. The animation above shows surface air temperature across part of the Northern Hemisphere, including North America, for December 2022 and the first few days of January 2023. Louis, Missouri Raleigh, North Carolina Paducah, Kentucky Mount Pocono, Pennsylvania Atlanta, Georgia Georgetown, Delaware and Dulles, Virginia. Among the places that set new temperature records were St. With temperatures running 20-30 degrees Fahrenheit higher than normal in the eastern U.S., spring-like weather broke temperature records in several states. Instead of unseasonable cold, many of the same areas experienced unusual warmth.
In the first few days of January 2023, conditions changed dramatically. The sprawling cold front left its mark on the Southeast as well, where the cold air helped fuel tornadoes, disrupted power supplies, and strained water systems. In certain parts of upstate New York and Canada, lake effect snow supercharged the storm, with more than 50 inches (125 centimeters) falling in Buffalo over a five-day period. In Michigan and other parts of the Midwest, a “bomb cyclone” formed along the cold front bearing powerful winds and whiteout conditions. In late December, many Americans reached for cold-weather gear as a blast of unusually cold Arctic air poured south and fueled a travel nightmare around Christmas. The configuration of the polar vortex may have played a role in unleashing bitter cold followed by record warmth in North America.ĭecember 2022 and January 2023 brought winter weather whiplash to the central and eastern United States. This resulted in a rapid shift from extremely cold temperatures to record high temperatures in North America. The central and eastern United States experienced winter weather whiplash in December 2022 and January 2023, with possible contributions from the polar vortex.
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