Antigua and Barbuda
hurricanes and tropical storms (July to
October); periodic droughts
Arctic Ocean
ice islands occasionally break away from northern
Ellesmere Island; icebergs calved from glaciers in western Greenland
and extreme northeastern Canada; permafrost in islands; virtually
ice locked from October to June; ships subject to superstructure
icing from October to May
Argentina
San Miguel de Tucuman and Mendoza areas in the Andes
subject to earthquakes; pamperos are violent windstorms that can
strike the pampas and northeast; heavy flooding
Armenia
occasionally severe earthquakes; droughts
Aruba
hurricanes; lies outside the Caribbean hurricane belt and is
rarely threatened
Ashmore and Cartier Islands
surrounded by shoals and reefs that can
pose maritime hazards
Atlantic Ocean
icebergs common in Davis Strait, Denmark Strait, and
the northwestern Atlantic Ocean from February to August and have
been spotted as far south as Bermuda and the Madeira Islands; ships
subject to superstructure icing in extreme northern Atlantic from
October to May; persistent fog can be a maritime hazard from May to
September; hurricanes (May to December)
Australia
cyclones along the coast; severe droughts; forest fires
Austria
landslides; avalanches; earthquakes
Azerbaijan
droughts