Multi-day lake-effect snow is set to disrupt travel and daily life across parts of Ohio and Pennsylvania starting on Thursday, November 28, 2024, with snow rates of up to 50 mm (2 inches) per hour expected, according to the National Weather Service (NWS).
The 2024 Thanksgiving weekend will bring a significant Arctic blast to the U.S. heartland, with dangerously cold temperatures and wind chills extending across the northern Plains and upper Midwest. This Arctic outbreak is expected to deliver the coldest conditions since February, lasting through the holiday weekend across the Northern Plains-Midwest and into parts of the South and East. The threat of heavy lake-effect snows across the Great Lakes continues to increase as well.
The Center for Western Weather and Water Extremes has warned of an intense winter storm impacting the Southern Sierra Nevada and parts of the Intermountain West from November 25 to 28, 2024. Forecasts indicate over 180 mm (7 inches) of precipitation and snow accumulations exceeding 1.5 m (5 feet) at higher elevations, with flash flood and winter storm warnings in effect.
A wave of powerful winter storms is forecast to impact the United States during 2024 Thanksgiving week (November 25 – December 1), with significant disruptions expected across multiple regions. Heavy snow in the Sierra Nevada, flash flooding in California, and hazardous driving conditions in the Rockies are just a few of the challenges holiday travelers may face. As the week progresses, the storm system will strengthen, bringing snow and rain to the Midwest and South, with the Northeast likely to experience a coastal storm by Friday, November 29, 2024.
A new atmospheric river is forecast to bring heavy rain and significant snowfall to California starting Monday, November 25, 2024, with potential flash flooding and major winter storm impacts in central and southern regions, according to the Center For Western Weather and Water Extremes (CW3E).
A powerful early-season snowstorm blanketed the Central Appalachians from November 20 to November 23, 2024, dumping up to 61 cm (2 feet) of snow in some areas, and disrupting communities across several northeastern states.
The strongest atmospheric river of the season, driven by a bomb cyclone with a central pressure of 945 hPa, ravaged the U.S. West Coast on Wednesday, November 20, 2024, bringing unprecedented rainfall, flooding, and wind damage. Northern California bore the brunt of the storm, with 543.4 mm (21.39 inches) of rain recorded in Sonoma County and widespread flooding that stranded hundreds. Meanwhile, fierce winds of up to 206 km/h (128 mph) toppled trees and left communities without power.
With 23 tornadoes reported in November 2024, Oklahoma has broken its previous November record of 12 tornadoes from 1958. The total number of tornadoes this year now ranks as the third-highest in the state’s history.
A potent upper-level low is forecast to bring the first significant snowfall of the season to parts of the Northeast, Great Lakes, and central Appalachians, with accumulations of up to 30.5 cm (1 foot) expected in higher elevations through Saturday, November 23, 2024, starting Thursday, November 21.
Two powerful Pacific storm systems and an atmospheric river event will continue impacting the Pacific Northwest and northern California through the end of this week with heavy rain, flooding, strong winds, and higher-elevation mountain snow.
