Greenland
continuous permafrost over northern two-thirds of the
island
Grenada
lies on edge of hurricane belt; hurricane season lasts from
June to November
Guam
frequent squalls during rainy season; relatively rare but
potentially destructive typhoons (June - December)
Guatemala
numerous volcanoes in mountains, with occasional violent
earthquakes; Caribbean coast extremely susceptible to hurricanes and
other tropical storms
volcanism: Guatemala experiences significant volcanic activity in
the Sierra Madre range; Santa Maria (elev. 3,772 m, 12,375 ft) 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; Pacaya (elev. 2,552 m, 8,373 ft), which erupted in May
2010 causing an ashfall on Guatemala City and prompting evacuations,
is one of the country's most active volcanoes; the volcano has
frequently been in eruption since 1965; other historically active
volcanoes include Acatenango, Almolonga, Atitlan, Fuego, and Tacana
Guernsey
NA
Guinea
hot, dry, dusty harmattan haze may reduce visibility during
dry season
Guinea-Bissau
hot, dry, dusty harmattan haze may reduce visibility
during dry season; brush fires
Guyana
flash floods are a constant threat during rainy seasons
Haiti
lies in the middle of the hurricane belt and subject to severe
storms from June to October; occasional flooding and earthquakes;
periodic droughts
Heard Island and McDonald Islands
Mawson Peak, an active volcano, is
on Heard Island