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By Anna Skinner
Associate News Editor
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A weakened polar vortex has allowed Arctic air to descend into the U.S., bringing chilly temperatures as far south as Florida this week.
According to forecasts from AccuWeather, the first wave of cold began sweeping through the Midwest earlier this week, with subzero temperatures forecast for states including North Dakota, Minnesota, Iowa and Nebraska. Meteorologists expect a second and third Arctic blast to follow over the next two weeks, bringing hazardous travel conditions and increased energy demands.
The cold weather has dropped as far south as Georgia and Florida, prompting freeze warnings and frost advisories for the Southern states. It's not abnormal for northern Florida to see frost this time of year, National Weather Service (NWS) meteorologist Paige Klingler told Newsweek, but it is a bit cooler than average. Usually, low temperatures are in the mid-40s this time of year.
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The polar vortex is a system of low pressure and cold air that typically circulates over Earth's poles. When stable, it contains frigid air far to the north. According to the NWS and multiple meteorological outlets, a stretch and weakening of this system has allowed Arctic air to spill southward, reaching as far as Florida.
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Meteorologists anticipate multiple cold waves between December 10 and 19, impacting much of the Midwest, East Coast, and the Southeast, including North and parts of Central Florida.
The NWS office in Jacksonville issued a Frost Advisory for several North Florida counties from 3 a.m. to 8 a.m. EST on Wednesday. The advisory includes Suwannee, Baker, Union, Eastern and Western Hamilton, Northern, Southeastern and Southwestern Columbia counties. Temperatures as low as 33 degrees Fahrenheit are forecast, raising the risk of frost formation and harm to sensitive outdoor vegetation.
Forecasts for key Florida cities show notable temperature drops. For example, Tallahassee is expected to see lows of 37 degrees on Tuesday, while Jacksonville will experience lows in the lower 40s. Panhandle cities could see overnight lows dipping into the upper 20s to low 30s, particularly north of Interstate 10. Central and South Florida will also cool down, with Orlando expected to reach lows near 49 degrees Fahrenheit. Despite these declines, South Florida will remain above typical frost and freeze thresholds.
Meteorological forecasts anticipate at least two and possibly three more rounds of intense cold from the Midwest through the East, affecting Florida between December 10 and 19. The NWS urges residents in affected Florida counties to protect sensitive outdoor plants and take precautions during the advisory period.
Another cold front is expected to arrive by the following weekend, potentially bringing further frost or freeze events, especially in North Florida. Forecasters will continue to monitor the evolving pattern.
Travelers and residents should stay informed about forecast changes, particularly as storm tracks and cold wave durations remain uncertain. The potential for even colder temperatures and infrastructure challenges remains, and preparedness measures are recommended as this Arctic outbreak progresses.
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