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
Holy See (Vatican City)
NA
Honduras
frequent, but generally mild, earthquakes; extremely
susceptible to damaging hurricanes and floods along the Caribbean
coast
Hong Kong
occasional typhoons
Howland Island
the narrow fringing reef surrounding the island can
be a maritime hazard