Mali
hot, dust-laden harmattan haze common during dry seasons;
recurring droughts; occasional Niger River flooding

Malta
NA

Marshall Islands
infrequent typhoons

Mauritania
hot, dry, dust/sand-laden sirocco wind blows primarily in
March and April; periodic droughts

Mauritius
cyclones (November to April); almost completely surrounded
by reefs that may pose maritime hazards

Mayotte
cyclones during rainy season

Mexico
tsunamis along the Pacific coast, volcanoes and destructive
earthquakes in the center and south, and hurricanes on the Pacific,
Gulf of Mexico, and Caribbean coasts
volcanism: Mexico experiences volcanic activity in the
central-southern part of the country; the volcanoes in Baja
California are mostly dormant; Colima (elev. 3,850 m, 12,631 ft),
which erupted in 2010, is Mexico's most active volcano and is
responsible for causing periodic evacuations of nearby villagers; it
has been deemed a "Decade Volcano" by the International Association
of Volcanology and Chemistry of the Earth's Interior, worthy of
study due to its explosive history and close proximity to human
populations; Popocatepetl (elev. 5,426 m, 17,802 ft) poses a threat
to Mexico City; other historically active volcanoes include Barcena,
Ceboruco, El Chichon, Michoacan-Guanajuato, Pico de Orizaba, San
Martin, Socorro, and Tacana

Micronesia, Federated States of
typhoons (June to December)

Moldova
landslides

Monaco
NA