Overview
- Polo weakened from Category 5 to Category 4 on Wednesday, September 23, according to successive SMN/NHC bulletins that logged lower sustained winds but a center remaining several hundred kilometers offshore.
- Although the eye has stayed at sea, the storm's broad circulation is producing torrential rainfall of 75–150 mm across Guerrero, Michoacán, Colima, Jalisco and Oaxaca that risks river rises, flash floods and mountain landslides.
- Maritime hazards are acute: authorities and forecasts report very high surf and multi‑meter waves along the western coast, prompting port restrictions and navigation advisories for small craft and fisheries.
- Federal and state agencies have activated contingency plans including Plan DN-III-E and Plan Marina, suspended classes in affected areas, opened shelters and positioned military and naval resources for response.
- Forecasts project Polo will move roughly parallel to Mexico's Pacific coast while gradually weakening over several days, but officials stress that small shifts in track or speed could change which coastal sectors receive the worst impacts and urge people to follow official updates.