00:00There is a greater than 90% chance of a very strong El Nino this fall and winter,
00:04and it could reshape weather across the northern hemisphere.
00:08The National Oceanic and Atmospheric Administration's Climate Prediction Center
00:12says this event might be the strongest since 1950,
00:15with a 75% chance it will break records.
00:19That matters because El Nino often changes weather patterns worldwide.
00:23But impacts are larger, though not guaranteed, according to NOAA.
00:28Meanwhile, meteorologists are watching how El Nino might mix with the polar vortex,
00:33a giant swirl of cold air around the poles that can send Arctic blasts south.
00:38AccuWeather's Chad Merrill says if the polar vortex weakens between mid-January and February,
00:43it could trigger a short burst of colder weather in northern U.S. regions.
00:47Yet Merrill stresses the vortex is only a small piece of a larger puzzle,
00:52with El Nino and other Pacific patterns likely dominating this winter's forecast.
00:56disclosure, this video contains stock footage and content created or enhanced using AI-assisted tools.
