The Servicio Meteorológico Nacional is Mexico's national weather organization. It collects data and issues forecasts, advisories, and warnings for the entire country. From Wikipedia
SMN says a low absorbing Tropical Wave 35 near the Oaxaca–Guerrero coast may organize, focusing 75–150 mm of rain over Guerrero, Oaxaca, Veracruz, Tabasco and Chiapas.
