word | | Natural hazards |
| glaciers | 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 ... |
| Grand | Comoros | cyclones possible during rainy season (December to April); Le Kartala on Grand Comore is an active volcano |
| grassland | Mongolia | dust storms, grassland and forest fires, drought, and "zud," which is harsh winter conditions |
| gravity | Antarctica | katabatic (gravity-driven) winds blow coastward from the high interior; frequent blizzards form near the foot of the plateau; cyclonic storms form over the ocean and move clockwise along the coast; volcanism ... |
| Great | Congo, Democratic Republic of the | periodic droughts in south; Congo River floods (seasonal); in the east, in the Great Rift Valley, there are active volcanoes |
| Great | Ethiopia | geologically active Great Rift Valley susceptible to earthquakes, volcanic eruptions; frequent droughts |
| Greenland | 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 ... |
| Guadeloupe | France | metropolitan France: flooding; avalanches; midwinter windstorms; drought; forest fires in south near the Mediterranean overseas departments: hurricanes (cyclones), flooding, volcanic activity (Guadeloupe, Martinique, Reunion) |
| Gulf | 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 |
| Gulf | Sweden | ice floes in the surrounding waters, especially in the Gulf of Bothnia, can interfere with maritime traffic |
| Gulf | United States | tsunamis, volcanoes, and earthquake activity around Pacific Basin; hurricanes along the Atlantic and Gulf of Mexico coasts; tornadoes in the midwest and southeast; mud slides in California; forest fires in the west ... |
| Haakon | Jan Mayen | dominated by the volcano Haakon VII Toppen/Beerenberg; volcanic activity resumed in 1970; the most recent eruption occurred in 1985 |
| harbors | Cote d'Ivoire | coast has heavy surf and no natural harbors; during the rainy season torrential flooding is possible |
| harmattan | Benin | hot, dry, dusty harmattan wind may affect north from December to March |
| harmattan | Cape Verde | prolonged droughts; seasonal harmattan wind produces obscuring dust; volcanically and seismically active |
| harmattan | Central African Republic | hot, dry, dusty harmattan winds affect northern areas; floods are common |
| harmattan | Chad | hot, dry, dusty harmattan winds occur in north; periodic droughts; locust plagues |
| harmattan | Ghana | dry, dusty, northeastern harmattan winds occur from January to March; droughts |
| harmattan | Guinea | hot, dry, dusty harmattan haze may reduce visibility during dry season |
| harmattan | Guinea-Bissau | hot, dry, dusty harmattan haze may reduce visibility during dry season; brush fires |
| harmattan | Liberia | dust-laden harmattan winds blow from the Sahara (December to March) |
| harmattan | Mali | hot, dust-laden harmattan haze common during dry seasons; recurring droughts; occasional Niger River flooding |
| harmattan | Sierra Leone | dry, sand-laden harmattan winds blow from the Sahara (December to February); sandstorms, dust storms |
| harmattan | Togo | hot, dry harmattan wind can reduce visibility in north during winter; periodic droughts |
| harmattan | Western Sahara | hot, dry, dust/sand-laden sirocco wind can occur during winter and spring; widespread harmattan haze exists 60% of time, often severely restricting visibility |
| harsh | Mongolia | dust storms, grassland and forest fires, drought, and "zud," which is harsh winter conditions |
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