ILLINOIS — A powerful surge of Arctic air has caused a dramatic temperature collapse across Illinois, with readings dropping as much as 50 degrees in just 24 hours, according to early-morning data Monday. The sharp cooldown followed a fast-moving cold front that swept across the Midwest overnight, bringing some of the most extreme short-term temperature…
Missouri — A rare and extreme “blue norther” cold front swept through Missouri, delivering one of the most dramatic temperature collapses the state has seen in decades and sending St. Louis from near-record warmth to snow and near-freezing conditions in just hours. The data shows temperature drops of 50 to 60 degrees within a single…
Southern California — Strong Santa Ana winds intensified across Los Angeles, San Bernardino, Riverside, and San Diego counties on Monday, peaking during the afternoon hours before remaining gusty through Tuesday afternoon, according to the latest wind gust forecasts and real-time observations. The strongest impacts are focused in mountain foothills, desert slopes, and wind-prone corridors, including…
SOUTHERN CALIFORNIA — A multi-day storm system is set to impact Southern California through New Year’s Eve and New Year’s Day, bringing periods of moderate to heavy rainfall, gusty winds, and elevated risks of flooding, mudslides, and downed trees, according to forecast data from the National Weather Service. The areas facing the greatest impacts include…
MISSOURI — A violent polar vortex–fueled bomb cyclone triggered an extraordinary temperature collapse of up to 55 degrees Fahrenheit across Missouri, marking one of the most extreme 24-hour temperature swings seen this winter. Newly analyzed temperature-change data shows the cold front racing southeast through the Central Plains, Midwest, and Lower Mississippi Valley, replacing mild air…
UPPER PENINSULA AND LOWER MICHIGAN — A powerful winter system delivered significant snowfall across Michigan’s Upper Peninsula, while strong winds and lighter accumulations created a chaotic and hazardous day across Lower Michigan and parts of the western Great Lakes. Snowfall totals clearly show the Upper Peninsula as the hardest-hit area, with some locations seeing well…
NEW JERSEY, PENNSYLVANIA, AND DELAWARE — A surge of Arctic air combined with persistent strong winds is driving dangerously low wind chill values across much of the Mid-Atlantic, with the harshest conditions expected tonight. According to the latest wind chill data, feels-like temperatures are falling into the teens across most of New Jersey, eastern Pennsylvania,…
UNITED STATES — Newly analyzed long-range jet stream and upper-air data shows a significant shift toward a more storm-favorable winter pattern for the Northeastern United States, driven by strong Greenland blocking. The setup raises confidence that multiple snow opportunities and periods of stormy weather may begin to emerge across New York, Pennsylvania, New Jersey, and…
MIDWEST AND GREAT LAKES — Long-range tropical forcing analog data now strongly supports a prolonged Arctic cold pattern developing across the Midwest and Great Lakes, rather than a brief or isolated cold snap. The data shows a large, well-defined region of below-average temperature anomalies setting up across multiple states, signaling that cold air is likely…
UNITED STATES — Forecasters are closely monitoring a developing storm pattern that could bring winter weather impacts to Pennsylvania, New Jersey, New York, Massachusetts, and Connecticut between January 7 and January 9, according to long-range model guidance and ensemble trends. While confidence remains moderate at this range, meteorologists say the overall setup is increasingly supportive…