A powerful Arctic cold front is set to bring hazardous travel conditions across the Great Lakes and northeastern United States, with heavy snow squalls, strong winds, and whiteout conditions expected from Wednesday through Thursday, December 4 through 5, 2024.
An atmospheric river is forecast to bring significant precipitation to Washington and Oregon between Friday and Saturday, December 6 and 7, 2024, with the Olympic Peninsula and North Cascades expecting up to 127 mm (5 inches) of rainfall and AR2 conditions likely in southern Washington and northern Oregon. While confidence is high regarding the occurrence of the event, uncertainties remain in its duration, intensity, and precise timing due to variability among GEFS ensemble model predictions.
A low-pressure system is set to bring heavy snowfall, freezing rain, and challenging travel conditions across Alaska starting Tuesday, December 3, 2024, prompting the issuance of multiple Winter Weather Advisories.
A powerful storm system is set to intensify by Wednesday, December 4, 2024, bringing strong winds to the northern Plains and Midwest before spreading across the Great Lakes and Northeast by the end of the week.
The Thanksgiving holiday brought record-breaking lake-effect snowstorm to parts of the United States, with areas in New York State, such as Copenhagen, buried under as much as 1.22 m (4 feet) of snow.
A powerful lake-effect snowstorm fueled by record-warm water temperatures in the Great Lakes unleashed its full force over 2024 Thanksgiving weekend in the United States, burying parts of New York, Pennsylvania, and Michigan under more than 90 cm (3 feet) of snow. The city of Erie, Pennsylvania, experienced its snowiest day on record on Friday, November 29, receiving 57.4 cm (22.6 inches) of snow in 24 hours. The Arctic air colliding with the warm lake waters triggered intense snowfall rates of up to 100 mm (4 inches) per hour, creating hazardous conditions that are expected to persist until midweek.
An Arctic cold front is forecast to descend from the northern Plains into the Midwest on Friday, November 29, 2024 bringing the coldest temperatures since mid-February and significant snowfall across the Great Lakes region.
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.
