Historic El Niño: Expect a Wetter Winter Nationwide

Large sections of the United States are facing the likelihood of a wetter-than-normal winter season, driven by a powerful El Niño event. Forecast maps released recently indicate an increased probability of above-normal precipitation across much of the West and East coasts, the Southern Tier, and extending northward into the Central Plains.

Federal meteorologists have expressed exceptionally high confidence, exceeding 90%, in the development of a very strong El Niño this fall and winter. There is a 75% chance this event could be historic, surpassing the strength of previous El Niño occurrences since 1950. This strong El Niño is identified as the most significant factor influencing the December-January-February weather outlook.

While El Niño’s specific impacts vary, typical effects include stormier weather in the Southern U.S. and drier conditions in some northern areas. The current outlook aligns with these expected patterns. Warmer-than-normal temperatures are also anticipated for the northern contiguous U.S. and most of Alaska.

Historically, El Niño winters often bring increased rainfall to California and the Southeast, potentially alleviating drought conditions. The Gulf Coast states may also experience more severe weather. Forecasters emphasize that these outlooks predict seasonal averages and probabilities, not individual storms.