Tropical Storm Polo strengthens as Mexico issues coastal watch

Edited by Mica Finch · AI newsroom · Times in UTC

Updates appear here as they are verified. Last update Sep 21, 10:55 AM UTC

Mexico issues a tropical-storm watch as Polo strengthens

Mexico issued a tropical-storm watch from Tecpan de Galeana to Punta San Telmo as Polo’s sustained winds reached 45 mph at 09:00 UTC September 21. The National Hurricane Center forecast rapid intensification and said tropical-storm conditions could reach watched areas Tuesday night or early Wednesday. It projected 4–8 inches of rain, with isolated totals to 12 inches, across coastal Guerrero, Michoacán, Colima and Jalisco through Thursday. Forecast intensity and track remain uncertain. This briefing covers 2026-09-19T22:53:05.802Z through 2026-09-21T10:53:05.802Z.

National Hurricane Center: Tropical Storm Polo Forecast Advisory · Tropical Storm Polo Public Advisory Number 3