El Nino and high tide flooding could be 'double whammy' for some coastal communities NOAA’s National Weather Service predicts El Nino likely to emerge by July An aerial view of a car sitting in a Holiday Inn parking lot flooded with seawater during a high-tide (King Tide) event in Mill Valley, California, December 5, 2025. (Image credit: Getty Images) May 15, 2026 Ocean & Coasts Weather Climate tides and currents flooding El Nino, La Nina, ENSO 0 Off