word | | Natural hazards |
| periodic | Nauru | periodic droughts |
| periodic | Nigeria | periodic droughts; flooding |
| periodic | Oman | summer winds often raise large sandstorms and dust storms in interior; periodic droughts |
| periodic | Puerto Rico | periodic droughts; hurricanes |
| periodic | Rwanda | periodic droughts; the volcanic Virunga mountains are in the northwest along the border with Democratic Republic of the Congo |
| periodic | Senegal | lowlands seasonally flooded; periodic droughts |
| periodic | Spain | periodic droughts |
| periodic | Sudan | dust storms and periodic persistent droughts |
| periodic | Togo | hot, dry harmattan wind can reduce visibility in north during winter; periodic droughts |
| periodic | Venezuela | subject to floods, rockslides, mudslides; periodic droughts |
| periodic | Zambia | periodic drought, tropical storms (November to April) |
| periods | Namibia | prolonged periods of drought |
| permafrost | Arctic Ocean | ... 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 ... |
| permafrost | Canada | continuous permafrost in north is a serious obstacle to development; cyclonic storms form east of the Rocky Mountains, a result of the mixing of air masses from the Arctic, Pacific, and North ... |
| permafrost | Greenland | continuous permafrost over northern two-thirds of the island |
| permafrost | Russia | permafrost over much of Siberia is a major impediment to development; volcanic activity in the Kuril Islands; volcanoes and earthquakes on the Kamchatka Peninsula; spring floods and summer/autumn forest fires throughout ... |
| permafrost | United States | ... the Atlantic and Gulf of Mexico coasts; tornadoes in the midwest and southeast; mud slides in California; forest fires in the west; flooding; permafrost in northern Alaska, a major impediment to development |
| persist | Falkland Islands (Islas Malvinas) | strong winds persist throughout the year |
| persistent | Atlantic Ocean | ... 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 |
| persistent | Pacific Ocean | ... Hemisphere and the western Pacific; ships subject to superstructure icing in extreme north from October to May; persistent fog in the northern Pacific can be a maritime hazard from June to December |
| persistent | Saint Pierre and Miquelon | persistent fog throughout the year can be a maritime hazard |
| persistent | Sudan | dust storms and periodic persistent droughts |
| phenomenon | Pacific Ocean | ... Mexico from June to October (most common in August and September); cyclical El Nino/La Nina phenomenon occurs in the equatorial Pacific, influencing weather in the Western Hemisphere and the western Pacific ... |
| plagues | Chad | hot, dry, dusty harmattan winds occur in north; periodic droughts; locust plagues |
| plains | Paraguay | local flooding in southeast (early September to June); poorly drained plains may become boggy (early October to June) |
| plains | Somalia | recurring droughts; frequent dust storms over eastern plains in summer; floods during rainy season |
| plateau | Angola | locally heavy rainfall causes periodic flooding on the plateau |
| plateau | Antarctica | ... 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 on Deception ... |
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