| Country | Natural 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
volcanism: volcanic activity occurs on the Heard and McDonald Islands |
| Austria | landslides; avalanches; earthquakes |
| Azerbaijan | droughts |
| Bahamas, The | hurricanes and other tropical storms cause extensive flood and wind damage |
| Bahrain | periodic droughts; dust storms |
| Bangladesh | droughts; cyclones; much of the country routinely inundated during the summer monsoon season |
| Barbados | infrequent hurricanes; periodic landslides |
| Belarus | NA |
| Belgium | flooding is a threat along rivers and in areas of reclaimed coastal land, protected from the sea by concrete dikes |
| Belize | frequent, devastating hurricanes (June to November) and coastal flooding (especially in south) |
| Benin | hot, dry, dusty harmattan wind may affect north from December to March |
| Bermuda | hurricanes (June to November) |
| Bhutan | violent storms from the Himalayas are the source of the country's name, which translates as Land of the Thunder Dragon; frequent landslides during the rainy season |
| Bolivia | flooding in the northeast (March-April)
volcanism: Bolivia experiences volcanic activity in Andes Mountains on the border with Chile; historically active volcanoes in this region are Irruputuncu (elev. 5,163 m), which last erupted in 1995 and Olca-Paruma |
| Bosnia and Herzegovina | destructive earthquakes |
| Botswana | periodic droughts; seasonal August winds blow from the west, carrying sand and dust across the country, which can obscure visibility |
| Bouvet Island | NA |
| Brazil | recurring droughts in northeast; floods and occasional frost in south |
| British Indian Ocean Territory | NA |
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