La Niña has officially started, signaling a major climate pattern shift that could impact weather across the United States and globally. While the National Oceanic and Atmospheric Administration (NOAA) has confirmed the arrival of La Niña, they emphasize that the ocean cooling is weaker than expected, which may result in fewer weather-related issues than typically associated with such conditions. Meteorologists are analyzing the implications of this phenomenon, which has reoccurred for the fourth time in five years, and forecasting the potential for wet weather as a result. Despite speculation about a rare summer La Niña, experts advise caution regarding predictions of significant weather disruptions.