A red warning flag flies outside the Acapulco port captaincy as Hurricane Polo approaches Acapulco, Guerrero state, Mexico, on September 22, 2026. Hurricane Polo strengthened to the highest category on September 22 in the Mexican Pacific, with no forecast of making landfall but with heavy rainfall expected. Polo intensified from Category 1 to Category 5 on the Saffir-Simpson scale in less than 24 hours. (Photo by Francisco RAMOS / AFP via Getty Images)