Summary (tl;dr)

A rapidly intensifying "strong" to "super" El Niño is poised to create a winter of stark contrasts across the United States for 2026-2027, with predictions for above-average snowfall in southern and western regions, while much of the northern U.S. may experience significant snowfall deficits.

Essential Background

El Niño is a climate phenomenon characterized by unusually warm sea surface temperatures in the equatorial Pacific Ocean, which can profoundly shift global weather patterns. A "strong" El Niño is declared when these temperatures are at least 1.5 degrees Celsius warmer than normal, with a "very strong" or "super" El Niño exceeding 2 degrees Celsius above average. Historically, strong El Niño events influence North American winter weather by pushing the Pacific jet stream farther south, leading to more active storm tracks and increased moisture across the southern United States, while often weakening the polar jet stream and keeping colder air concentrated in eastern Canada.

The Full Story

As of September 2026, a strong El Niño event is firmly established and rapidly intensifying, with forecasts indicating a near 100% certainty it will persist through February 2027. The National Oceanic and Atmospheric Administration's (NOAA) Climate Prediction Center estimates a greater than 90% chance of a very strong El Niño this fall and winter, with a 69% chance of it reaching "historic" strength, potentially surpassing all previous El Niños since 1950. This powerful climate driver has led to the recent release of long-range winter forecasts by meteorological organizations and almanacs, such as The Old Farmer's Almanac and Farmers' Almanac, which predict a winter of "sharp contrasts" and "surprises" across the nation for 2026-2027. Consequently, individuals are actively searching for "strong el nino snow map us" and "farmers almanac winter weather map" to understand how these unprecedented conditions might affect their local areas.

Regarding snowfall, meteorologists anticipate significant deficits across much of the northern U.S., including parts of the Northern Plains and Upper Midwest. In contrast, above-average snowfall is expected across most western, southern, central, and eastern states. Specifically, regions like California's Sierra Nevada, Utah, the Central to Southern Rockies, parts of the Southwest, Southern Plains, and Southeast/Appalachians are projected to see increased snowfall. The southern tier is expected to be wetter than normal, which could translate to heavy, wet snow when sufficient cold air is present. The Northeast could experience a tricky mix of precipitation, with some inland areas receiving heavy wet snow, while coastal regions might see more rain or mixed precipitation. Overall, temperatures are expected to be milder than normal across the northern U.S. and Upper Midwest, with the southern U.S. experiencing near-average temperatures.

Why It Matters

The anticipated winter weather patterns have significant implications across the United States. Increased snowfall in the West, particularly in the Sierra Nevada and Rocky Mountains, is crucial for drought relief and replenishing vital water supplies, especially following a dry start to the water year. This could also translate to a promising season for ski resorts in these areas. Conversely, regions bracing for less snow may face challenges related to water resources and winter sports industries. The activated southern storm track increases the risk of heavy rain and potential flooding in areas like California and the Southwest, and could lead to mudslides. For the Northeast, the forecast of mixed precipitation suggests unpredictable and potentially hazardous travel conditions. These varied impacts necessitate preparedness from individuals, businesses in sectors such as agriculture, tourism, and utilities, and emergency services across the country.

Geographic Location

• Sierra Nevada, California, United States (potential for above-average snowfall)
• Utah, United States (potential for above-average snowfall, particularly for ski areas)
• Southern Rockies, Colorado, United States (potential for above-average snowfall)
• New Mexico, United States (potential for above-average snowfall)
• Arizona, United States (potential for above-average snowfall)
• Southern Plains, United States (increased chances for above-normal snowfall)
• Southeast, United States (increased chances for above-normal snowfall when cold air is available)
• Western Massachusetts, Massachusetts, United States (colder and snowier conditions)
• Southern New Hampshire, New Hampshire, United States (colder and snowier conditions)
• Southern Vermont, Vermont, United States (colder and snowier conditions)
• Washington, D.C., District of Columbia, United States (more snow and colder temperatures than normal)
• Maryland, United States (more snow and colder temperatures than normal across most of the state)
• Eastern Panhandle, West Virginia, United States (colder temperatures and snowier conditions)
• Virginia, United States (colder and snowier weather)
• Western North Carolina, North Carolina, United States (colder and snowier weather)
• Eastern Washington, Washington, United States (snowier conditions)
• Eastern Oregon, Oregon, United States (snowier conditions)
• Alaska, United States (snowier conditions)
• Lake Ontario region, New York, United States (reduced lake-effect snowfall)
• Lake Erie region, New York, United States (reduced lake-effect snowfall)
• Northwestern Pennsylvania, Pennsylvania, United States (drier than normal with reduced lake-effect snowfall)
• Western New York, New York, United States (drier than normal with reduced lake-effect snowfall)