A significant storm system is poised to unleash potentially disastrous winter conditions across the southern United States this upcoming weekend, with snow, freezing rain, and ice anticipated to affect a considerable portion of the country. Meteorologists suggest that this storm may define the entire winter season. Nearly 30 states, ranging from New Mexico to New York, could experience its impact starting on Friday.
The National Weather Service cautions that this storm event will be substantial and will bring extremely cold temperatures before and after its passage, especially in regions unaccustomed to such frigid weather. David Nadler, a warning co-ordination meteorologist at the NWS in Peachtree City, Ga., highlights the current uncertainty, emphasizing that the storm’s forecast and scope might change in the coming days, potentially leading to alterations in watches and warnings. Additionally, the severe weather as the weekend progresses could affect parts of Canada at the beginning of the following week.
The storm is expected to commence on Friday and persist until Monday. Forecast models indicate that the system will span from New Mexico and the southern Rocky Mountains to northern Georgia, the Carolinas, and the mid-Atlantic states before advancing northward to the northeast and Great Lakes regions. This area accounts for about 55% of the U.S. population, including major cities like Dallas, Nashville, Washington, and Baltimore, which are likely to bear the brunt of the storm on Sunday.
The anticipated weather conditions across the U.S. vary, encompassing heavy snow, sleet, or cold and heavy rainfall contingent on the specific location. Texas, Oklahoma, and North Carolina are projected to face significant snowfall with potential travel disruptions. The highest risk of freezing rain is foreseen in southeastern Texas, Louisiana, Georgia, and South Carolina. The storm’s initial impacts are forecasted to hit Texas on Friday as a frigid Arctic air mass descends across the state.
Pam Knox, director of the University of Georgia Weather Network, notes that this storm could be unprecedented for residents in the Deep South, posing risks such as treacherous road conditions, ice-covered trees, and power outages, especially in areas unaccustomed to such severe weather. She emphasizes the potential challenges individuals may face in staying warm, safe, and adequately nourished during extended power cuts.
In Canada, the cold air fueling the storm originates from the country, resulting in a deep freeze across various regions. While the exact impact on Canada is uncertain, Eastern and Atlantic Canada may experience significant snowfall. Environment and Climate Change Canada has issued weather alerts for parts of Prairie and Eastern Canada due to extreme cold, with possible snow impacts anticipated in Ontario and Atlantic Canada.
Geoff Coulson, a weather preparedness meteorologist with Environment and Climate Change Canada, outlines the factors contributing to the storm’s intensity, including an atmospheric river from the Pacific Coast colliding with warm, moist air from the Gulf of Mexico and the polar vortex driving Arctic air southward. The significant temperature differences between these air masses are expected to fuel the storm’s energy levels, making predictions challenging.
Knox likens predicting the storm’s behavior to managing a group of interacting toddlers due to the complexity of various factors at play. The storm’s magnitude and impact remain uncertain as the weekend approaches.
