Natural hazards

Afghanistan

Albania

Algeria

American Samoa

cyclones common from December to March

volcanism: limited volcanic activity on the Ofu and Olosega Islands; neither has erupted since the 19th century

Andorra

Angola

Anguilla

Antarctica

Antigua and Barbuda

Arctic Ocean

Argentina

San Miguel de Tucumán and Mendoza areas in the Andes subject to earthquakes; pamperos are violent windstorms that can strike the pampas and northeast; heavy flooding in some areas

volcanism: volcanic activity in the Andes Mountains along the Chilean border; Copahue (2,997 m) last erupted in 2000; other historically active volcanoes include Llullaillaco, Maipo, Planchón-Peteroa, San José, Tromen, Tupungatito, and Viedma

Armenia

Aruba

Ashmore and Cartier Islands

Atlantic Ocean

Australia

cyclones along the coast; severe droughts; forest fires

volcanism: volcanic activity on Heard and McDonald Islands

Austria

Azerbaijan

Bahamas, The

Bahrain

Bangladesh

Barbados

Belarus

Belgium

Belize

Benin

Bermuda

Bhutan

Bolivia

flooding in the northeast (March to April)

volcanism: volcanic activity in Andes Mountains on the border with Chile; historically active volcanoes in this region are Irruputuncu (5,163 m), which last erupted in 1995, and the Olca-Paruma volcanic complex (5,762 m to 5,167 m)

Bosnia and Herzegovina

Botswana

Bouvet Island

Brazil

British Indian Ocean Territory

British Virgin Islands

Brunei

Bulgaria

Burkina Faso

Burma

Burundi

Cabo Verde

prolonged droughts; seasonal harmattan wind produces obscuring dust; volcanically and seismically active

volcanism: Fogo (2,829 m), which last erupted in 1995, is Cabo Verde's only active volcano

Cambodia

Cameroon

volcanic activity with periodic releases of poisonous gases from Lake Nyos and Lake Monoun volcanoes

volcanism: Mt. Cameroon (4,095 m), which last erupted in 2000, is the most frequently active volcano in West Africa; lakes in Oku volcanic field have released fatal levels of gas on occasion, killing some 1,700 people in 1986

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 American interior, and produce most of the country's rain and snow east of the mountains

volcanism: the vast majority of volcanoes in Western Canada's Coast Mountains remain dormant

Cayman Islands

Central African Republic

Chad

Chile

severe earthquakes; active volcanism; tsunamis

volcanism: significant volcanic activity due to more than three-dozen active volcanoes along the Andes Mountains; Lascar (5,592 m), which last erupted in 2007, is the most active volcano in the northern Chilean Andes; Llaima (3,125 m) in central Chile, which last erupted in 2009, is another of the country's most active; Chaiten's 2008 eruption forced major evacuations; other notable historically active volcanoes include Cerro Hudson, Calbuco, Copahue, Guallatiri, Llullaillaco, Nevados de Chillan, Puyehue, San Pedro, and Villarrica; see note 2 under "Geography - note"

China

frequent typhoons (about five per year along southern and eastern coasts); damaging floods; tsunamis; earthquakes; droughts; land subsidence

volcanism: China contains some historically active volcanoes including Changbaishan (also known as Baitoushan, Baegdu, or P'aektu-san), Hainan Dao, and Kunlun although most have been relatively inactive in recent centuries

Christmas Island

Clipperton Island

Cocos (Keeling) Islands

Colombia

highlands subject to volcanic eruptions; occasional earthquakes; periodic droughts

volcanism: Galeras (4,276 m) is one of Colombia's most active volcanoes, having erupted in 2009 and 2010 causing major evacuations; it has been deemed a Decade Volcano by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to its explosive history and close proximity to human populations; Nevado del Ruiz (5,321 m), 129 km (80 mi) west of Bogota, erupted in 1985 producing lahars (mudflows) that killed 23,000 people; the volcano last erupted in 1991; additionally, after 500 years of dormancy, Nevado del Huila reawakened in 2007 and has experienced frequent eruptions since then; other historically active volcanoes include Cumbal, Dona Juana, Nevado del Tolima, and Purace

Comoros

cyclones possible during rainy season (December to April); volcanic activity on Grand Comore

volcanism: Karthala (2,361 m) on Grand Comore Island last erupted in 2007; a 2005 eruption forced thousands of people to be evacuated and produced a large ash cloud

Congo, Democratic Republic of the

periodic droughts in south; Congo River floods (seasonal); active volcanoes in the east along the Great Rift Valley

volcanism: Nyiragongo (3,470 m), which erupted in 2002 and is experiencing ongoing activity, poses a major threat to the city of Goma, home to a quarter million people; the volcano produces unusually fast-moving lava, known to travel up to 100 km /hr; Nyiragongo has been deemed a Decade Volcano by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to its explosive history and close proximity to human populations; its neighbor, Nyamuragira, which erupted in 2010, is Africa's most active volcano; Visoke is the only other historically active volcano

Congo, Republic of the

Cook Islands

Coral Sea Islands

Costa Rica

occasional earthquakes, hurricanes along Atlantic coast; frequent flooding of lowlands at onset of rainy season and landslides; active volcanoes

volcanism: Arenal (1,670 m), which erupted in 2010, is the most active volcano in Costa Rica; a 1968 eruption destroyed the town of Tabacon; Irazu (3,432 m), situated just east of San Jose, has the potential to spew ash over the capital city as it did between 1963 and 1965; other historically active volcanoes include Miravalles, Poas, Rincon de la Vieja, and Turrialba

Cote d'Ivoire

Croatia

Cuba

Curacao

Curacao is south of the Caribbean hurricane belt and is rarely threatened

Cyprus

Czechia

Denmark

Djibouti

earthquakes; droughts; occasional cyclonic disturbances from the Indian Ocean bring heavy rains and flash floods

volcanism: experiences limited volcanic activity; Ardoukoba (298 m) last erupted in 1978; Manda-Inakir, located along the Ethiopian border, is also historically active

Dominica

flash floods are a constant threat; destructive hurricanes can be expected during the late summer months

volcanism: Dominica was the last island to be formed in the Caribbean some 26 million years ago, it lies in the middle of the volcanic island arc of the Lesser Antilles that extends from the island of Saba in the north to Grenada in the south; of the 16 volcanoes that make up this arc, five are located on Dominica, more than any other island in the Caribbean: Morne aux Diables (861 m), Morne Diablotins (1,430 m), Morne Trois Pitons (1,387 m), Watt Mountain (1,224 m), which last erupted in 1997, and Morne Plat Pays (940 m); the two best known volcanic features on Dominica, the Valley of Desolation and the Boiling Lake thermal areas, lie on the flanks of Watt Mountain and both are popular tourist destinations

Dominican Republic

Ecuador

frequent earthquakes; landslides; volcanic activity; floods; periodic droughts

volcanism: volcanic activity concentrated along the Andes Mountains; Sangay (5,230 m), which erupted in 2010, is mainland Ecuador's most active volcano; other historically active volcanoes in the Andes include Antisana, Cayambe, Chacana, Cotopaxi, Guagua Pichincha, Reventador, Sumaco, and Tungurahua; Fernandina (1,476 m), a shield volcano that last erupted in 2009, is the most active of the many Galapagos volcanoes; other historically active Galapagos volcanoes include Wolf, Sierra Negra, Cerro Azul, Pinta, Marchena, and Santiago

Egypt

El Salvador

known as the Land of Volcanoes; frequent and sometimes destructive earthquakes and volcanic activity; extremely susceptible to hurricanes

volcanism: significant volcanic activity; San Salvador (1,893 m), which last erupted in 1917, has the potential to cause major harm to the country's capital, which lies just below the volcano's slopes; San Miguel (2,130 m), which last erupted in 2002, is one of the most active volcanoes in the country; other historically active volcanoes include Conchaguita, Ilopango, Izalco, and Santa Ana

Equatorial Guinea

violent windstorms; flash floods

volcanism: Santa Isabel (3,007 m), which last erupted in 1923, is the country's only historically active volcano; Santa Isabel, along with two dormant volcanoes, form Bioko Island in the Gulf of Guinea

Eritrea

frequent droughts, rare earthquakes and volcanoes; locust swarms

volcanism: Dubbi (1,625 m), which last erupted in 1861, was the country's only historically active volcano until Nabro (2,218 m) came to life on 12 June 2011

Estonia

Eswatini

Ethiopia

geologically active Great Rift Valley susceptible to earthquakes, volcanic eruptions; frequent droughts

volcanism: volcanic activity in the Great Rift Valley; Erta Ale (613 m), which has caused frequent lava flows in recent years, is the country's most active volcano; Dabbahu became active in 2005, forcing evacuations; other historically active volcanoes include Alayta, Dalaffilla, Dallol, Dama Ali, Fentale, Kone, Manda Hararo, and Manda-Inakir

European Union

Falkland Islands (Islas Malvinas)

Faroe Islands

Fiji

Finland

France

metropolitan France: flooding; avalanches; midwinter windstorms; drought; forest fires in south near the Mediterranean;

overseas departments: hurricanes (cyclones); flooding;

volcanism: Montagne Pelee (1,394 m) on the island of Martinique in the Caribbean is the most active volcano of the Lesser Antilles arc, it last erupted in 1932; a catastrophic eruption in May 1902 destroyed the city of St. Pierre, killing an estimated 30,000 people; La Soufriere (1,467 m) on the island of Guadeloupe in the Caribbean last erupted from July 1976 to March 1977; these volcanoes are part of the volcanic island arc of the Lesser Antilles that extends from Saba in the north to Grenada in the south

French Polynesia

French Southern and Antarctic Lands

Ile Amsterdam and Ile Saint-Paul are inactive volcanoes; Iles Eparses subject to periodic cyclones; Bassas da India is a maritime hazard since it is under water for a period of three hours prior to and following the high tide and surrounded by reefs

volcanism: Reunion Island - Piton de la Fournaise (2,632 m), which has erupted many times in recent years including 2010, 2015, and 2017, is one of the world's most active volcanoes; although rare, eruptions outside the volcano's caldera could threaten nearby cities

Gabon

Gambia, The

Gaza Strip

Georgia

Germany

Ghana

Gibraltar

Greece

severe earthquakes

volcanism: Santorini (367 m) has been deemed a Decade Volcano by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to its explosive history and close proximity to human populations; although there have been very few eruptions in recent centuries, Methana and Nisyros in the Aegean are classified as historically active

Greenland

Grenada

lies on edge of hurricane belt; hurricane season lasts from June to November

volcanism: Mount Saint Catherine (840 m) lies on the island of Grenada; Kick 'em Jenny, an active submarine volcano (seamount) on the Caribbean Sea floor, lies about 8 km north of the island of Grenada; these two volcanoes are at the southern end of the volcanic island arc of the Lesser Antilles that extends up to the Netherlands dependency of Saba in the north

Guam

Guatemala

numerous volcanoes in mountains, with occasional violent earthquakes; Caribbean coast extremely susceptible to hurricanes and other tropical storms

volcanism: significant volcanic activity in the Sierra Madre range; Santa Maria (3,772 m) has been deemed a Decade Volcano by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to its explosive history and close proximity to human populations; Pacaya (2,552 m), which erupted in May 2010 causing an ashfall on Guatemala City and prompting evacuations, is one of the country's most active volcanoes with frequent eruptions since 1965; other historically active volcanoes include Acatenango, Almolonga, Atitlan, Fuego, and Tacana; see note 2 under "Geography - note"

Guernsey

Guinea

Guinea-Bissau

Guyana

Haiti

Heard Island and McDonald Islands

Holy See (Vatican City)

Honduras

Hong Kong

Iceland

earthquakes and volcanic activity

volcanism: Iceland, situated on top of a hotspot, experiences severe volcanic activity; Eyjafjallajokull (1,666 m) erupted in 2010, sending ash high into the atmosphere and seriously disrupting European air traffic; scientists continue to monitor nearby Katla (1,512 m), which has a high probability of eruption in the very near future, potentially disrupting air traffic; Grimsvoetn and Hekla are Iceland's most active volcanoes; other historically active volcanoes include Askja, Bardarbunga, Brennisteinsfjoll, Esjufjoll, Hengill, Krafla, Krisuvik, Kverkfjoll, Oraefajokull, Reykjanes, Torfajokull, and Vestmannaeyjar

India

droughts; flash floods, as well as widespread and destructive flooding from monsoonal rains; severe thunderstorms; earthquakes

volcanism: Barren Island (354 m) in the Andaman Sea has been active in recent years

Indian Ocean

Indonesia

occasional floods; severe droughts; tsunamis; earthquakes; volcanoes; forest fires

volcanism: Indonesia contains the most volcanoes of any country in the world - some 76 are historically active; significant volcanic activity occurs on Java, Sumatra, the Sunda Islands, Halmahera Island, Sulawesi Island, Sangihe Island, and in the Banda Sea; Merapi (2,968 m), Indonesia's most active volcano and in eruption since 2010, has been deemed a Decade Volcano by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to its explosive history and close proximity to human populations; on 22 December 2018, a large explosion and flank collapse destroyed most of the 338 m high island of Anak Krakatau (Child of Krakatau) and generated a deadly tsunami inundating portions of western Java and southern Sumatra leaving more than 400 dead; other notable historically active volcanoes include Agung, Awu, Karangetang, Krakatau (Krakatoa), Makian, Raung, Sinabung, and Tambora; see note 2 under "Geography - note"

Iran

Iraq

Ireland

Isle of Man

Israel

Italy

regional risks include landslides, mudflows, avalanches, earthquakes, volcanic eruptions, flooding; land subsidence in Venice

volcanism: significant volcanic activity; Etna (3,330 m), which is in eruption as of 2013, is Europe's most active volcano; flank eruptions pose a threat to nearby Sicilian villages; Etna, along with the famous Vesuvius, which remains a threat to the millions of nearby residents in the Bay of Naples area, have both been deemed Decade Volcanoes by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to their explosive history and close proximity to human populations; Stromboli, on its namesake island, has also been continuously active with moderate volcanic activity; other historically active volcanoes include Campi Flegrei, Ischia, Larderello, Pantelleria, Vulcano, and Vulsini

Jamaica

Jan Mayen

dominated by the volcano Beerenberg

volcanism: Beerenberg (2,227 m) is Norway's only active volcano; volcanic activity resumed in 1970; the most recent eruption occurred in 1985

Japan

many dormant and some active volcanoes; about 1,500 seismic occurrences (mostly tremors but occasional severe earthquakes) every year; tsunamis; typhoons

volcanism: both Unzen (1,500 m) and Sakura-jima (1,117 m), which lies near the densely populated city of Kagoshima, have been deemed Decade Volcanoes by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to their explosive history and close proximity to human populations; other notable historically active volcanoes include Asama, Honshu Island's most active volcano, Aso, Bandai, Fuji, Iwo-Jima, Kikai, Kirishima, Komaga-take, Oshima, Suwanosejima, Tokachi, Yake-dake, and Usu; see note 2 under "Geography - note"

Jersey

Jordan

Kazakhstan

Kenya

recurring drought; flooding during rainy seasons

volcanism: limited volcanic activity; the Barrier (1,032 m) last erupted in 1921; South Island is the only other historically active volcano

Kiribati

Korea, North

late spring droughts often followed by severe flooding; occasional typhoons during the early fall

volcanism: P'aektu-san (2,744 m) (also known as Baitoushan, Baegdu, or Changbaishan), on the Chinese border, is considered historically active

Korea, South

occasional typhoons bring high winds and floods; low-level seismic activity common in southwest

volcanism: Halla (1,950 m) is considered historically active although it has not erupted in many centuries

Kuwait

Kyrgyzstan

Laos

Latvia

Lebanon

Lesotho

Liberia

Libya

Liechtenstein

Lithuania

Luxembourg

Macau

Madagascar

periodic cyclones; drought; and locust infestation

volcanism: Madagascar's volcanoes have not erupted in historical times

Malawi

Malaysia

Maldives

Mali

Malta

Marshall Islands

Mauritania

Mauritius

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

volcanism: volcanic activity in the central-southern part of the country; the volcanoes in Baja California are mostly dormant; Colima (3,850 m), which erupted in 2010, is Mexico's most active volcano and is responsible for causing periodic evacuations of nearby villagers; it has been deemed a Decade Volcano by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to its explosive history and close proximity to human populations; Popocatepetl (5,426 m) poses a threat to Mexico City; other historically active volcanoes include Barcena, Ceboruco, El Chichon, Michoacan-Guanajuato, Pico de Orizaba, San Martin, Socorro, and Tacana; see note 2 under "Geography - note"

Micronesia, Federated States of

Moldova

Monaco

Mongolia

Montenegro

Montserrat

volcanic eruptions; severe hurricanes (June to November)

volcanism: Soufriere Hills volcano (915 m), has erupted continuously since 1995; a massive eruption in 1997 destroyed most of the capital, Plymouth, and resulted in approximately half of the island becoming uninhabitable; the island of Montserrat is part of the volcanic island arc of the Lesser Antilles that extends from Saba in the north to Grenada in the south

Morocco

Mozambique

Namibia

Nauru

Navassa Island

Nepal

Netherlands

flooding

volcanism: Mount Scenery (887 m), located on the island of Saba in the Caribbean, last erupted in 1640; Round Hill (601 m), a dormant volcano also known as The Quill, is located on the island of St. Eustatius in the Caribbean; these islands are at the northern end of the volcanic island arc of the Lesser Antilles that extends south to Grenada

New Caledonia

cyclones, most frequent from November to March

volcanism: Matthew and Hunter Islands are historically active

New Zealand

earthquakes are common, though usually not severe; volcanic activity

volcanism: significant volcanism on North Island; Ruapehu (2,797 m), which last erupted in 2007, has a history of large eruptions in the past century; Taranaki has the potential to produce dangerous avalanches and lahars; other historically active volcanoes include Okataina, Raoul Island, Tongariro, and White Island; see note 2 under "Geography - note"

Nicaragua

destructive earthquakes; volcanoes; landslides; extremely susceptible to hurricanes

volcanism: significant volcanic activity; Cerro Negro (728 m), which last erupted in 1999, is one of Nicaragua's most active volcanoes; its lava flows and ash have been known to cause significant damage to farmland and buildings; other historically active volcanoes include Concepcion, Cosiguina, Las Pilas, Masaya, Momotombo, San Cristobal, and Telica

Niger

Nigeria

Niue

Norfolk Island

North Macedonia

Northern Mariana Islands

Norway

rockslides, avalanches

volcanism: Beerenberg (2,227 m) on Jan Mayen Island in the Norwegian Sea is the country's only active volcano

Oman

Pacific Ocean

Pakistan

Palau

Panama

Papua New Guinea

active volcanism; the country is subject to frequent and sometimes severe earthquakes; mud slides; tsunamis

volcanism: severe volcanic activity; Ulawun (2,334 m), one of Papua New Guinea's potentially most dangerous volcanoes, has been deemed a Decade Volcano by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to its explosive history and close proximity to human populations; Rabaul (688 m) destroyed the city of Rabaul in 1937 and 1994; Lamington erupted in 1951 killing 3,000 people; Manam's 2004 eruption forced the island's abandonment; other historically active volcanoes include Bam, Bagana, Garbuna, Karkar, Langila, Lolobau, Long Island, Pago, St. Andrew Strait, Victory, and Waiowa; see note 2 under "Geography - note"

Paracel Islands

Paraguay

Peru

earthquakes, tsunamis, flooding, landslides, mild volcanic activity

volcanism: volcanic activity in the Andes Mountains; Ubinas (5,672 m), which last erupted in 2009, is the country's most active volcano; other historically active volcanoes include El Misti, Huaynaputina, Sabancaya, and Yucamane; see note 2 under "Geography - note"

Philippines

astride typhoon belt, usually affected by 15 and struck by five to six cyclonic storms each year; landslides; active volcanoes; destructive earthquakes; tsunamis

volcanism: significant volcanic activity; Taal (311 m), which has shown recent unrest and may erupt in the near future, has been deemed a Decade Volcano by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to its explosive history and close proximity to human populations; Mayon (2,462 m), the country's most active volcano, erupted in 2009 forcing over 33,000 to be evacuated; other historically active volcanoes include Biliran, Babuyan Claro, Bulusan, Camiguin, Camiguin de Babuyanes, Didicas, Iraya, Jolo, Kanlaon, Makaturing, Musuan, Parker, Pinatubo, and Ragang; see note 2 under "Geography - note"

Pitcairn Islands

Poland

Portugal

Azores subject to severe earthquakes

volcanism: limited volcanic activity in the Azores Islands; Fayal or Faial (1,043 m) last erupted in 1958; most volcanoes have not erupted in centuries; historically active volcanoes include Agua de Pau, Furnas, Pico, Picos Volcanic System, San Jorge, Sete Cidades, and Terceira

Puerto Rico

Qatar

Romania

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 Siberia and parts of European Russia

volcanism: significant volcanic activity on the Kamchatka Peninsula and Kuril Islands; the peninsula alone is home to some 29 historically active volcanoes, with dozens more in the Kuril Islands; Kliuchevskoi (4,835 m), which erupted in 2007 and 2010, is Kamchatka's most active volcano; Avachinsky and Koryaksky volcanoes, which pose a threat to the city of Petropavlovsk-Kamchatsky, have been deemed Decade Volcanoes by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to their explosive history and close proximity to human populations; other notable historically active volcanoes include Bezymianny, Chikurachki, Ebeko, Gorely, Grozny, Karymsky, Ketoi, Kronotsky, Ksudach, Medvezhia, Mutnovsky, Sarychev Peak, Shiveluch, Tiatia, Tolbachik, and Zheltovsky; see note 2 under "Geography - note"

Rwanda

periodic droughts; the volcanic Virunga Mountains are in the northwest along the border with Democratic Republic of the Congo

volcanism: Visoke (3,711 m), located on the border with the Democratic Republic of the Congo, is the country's only historically active volcano

Saint Helena, Ascension, and Tristan da Cunha

active volcanism on Tristan da Cunha

volcanism: the island volcanoes of Tristan da Cunha (2,060 m) and Nightingale Island (365 m) experience volcanic activity; Tristan da Cunha erupted in 1962 and Nightingale in 2004

Saint Kitts and Nevis

hurricanes (July to October)

volcanism: Mount Liamuiga (1,156 m) on Saint Kitts, and Nevis Peak (985 m) on Nevis, are both volcanoes that are part of the volcanic island arc of the Lesser Antilles, which extends from Saba in the north to Grenada in the south

Saint Lucia

hurricanes

volcanism: Mount Gimie (948 m), also known as Qualibou, is a caldera on the west of the island; the iconic twin pyramidal peaks of Gros Piton (771 m) and Petit Piton (743 m) are lava dome remnants associated with the Soufriere volcano; there have been no historical magmatic eruptions, but a minor steam eruption in 1766 spread a thin layer of ash over a wide area; Saint Lucia is part of the volcanic island arc of the Lesser Antilles that extends from Saba in the north to Grenada in the south

Saint Martin

Saint Pierre and Miquelon

Saint Vincent and the Grenadines

hurricanes; La Soufriere volcano on the island of Saint Vincent is a constant threat

volcanism: La Soufriere (1,234 m) on the island of Saint Vincent last erupted in 1979; the island of Saint Vincent is part of the volcanic island arc of the Lesser Antilles that extends from Saba in the north to Grenada in the south

Samoa

occasional cyclones; active volcanism

volcanism: Savai'I Island (1,858 m), which last erupted in 1911, is historically active

San Marino

Sao Tome and Principe

Saudi Arabia

frequent sand and dust storms

volcanism: despite many volcanic formations, there has been little activity in the past few centuries; volcanoes include Harrat Rahat, Harrat Khaybar, Harrat Lunayyir, and Jabal Yar

Senegal

Serbia

Seychelles

Sierra Leone

Singapore

Sint Maarten

subject to hurricanes from July to November

Slovakia

Slovenia

Solomon Islands

tropical cyclones, but rarely destructive; geologically active region with frequent earthquakes, tremors, and volcanic activity; tsunamis

volcanism: Tinakula (851 m) has frequent eruption activity, while an eruption of Savo (485 m) could affect the capital Honiara on nearby Guadalcanal

Somalia

South Africa

prolonged droughts

volcanism: the volcano forming Marion Island in the Prince Edward Islands, which last erupted in 2004, is South Africa's only active volcano

South Georgia and South Sandwich Islands

Southern Ocean

Spain

periodic droughts, occasional flooding

volcanism: volcanic activity in the Canary Islands, located off Africa's northwest coast; Teide (3,715 m) has been deemed a Decade Volcano by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to its explosive history and close proximity to human populations; La Palma (2,426 m), which last erupted in 1971, is the most active of the Canary Islands volcanoes; Lanzarote is the only other historically active volcano

Spratly Islands

Sri Lanka

Sudan

Suriname

Svalbard

Sweden

Switzerland

Syria

dust storms, sandstorms

volcanism: Syria's two historically active volcanoes, Es Safa and an unnamed volcano near the Turkish border have not erupted in centuries

Taiwan

earthquakes; typhoons

volcanism: Kueishantao Island (401 m), east of Taiwan, is its only historically active volcano, although it has not erupted in centuries

Tajikistan

Tanzania

flooding on the central plateau during the rainy season; drought

volcanism: limited volcanic activity; Ol Doinyo Lengai (2,962 m) has emitted lava in recent years; other historically active volcanoes include Kieyo and Meru

Thailand

Timor-Leste

Togo

Tokelau

Tonga

cyclones (October to April); earthquakes and volcanic activity on Fonuafo'ou

volcanism: moderate volcanic activity; Fonualei (180 m) has shown frequent activity in recent years, while Niuafo'ou (260 m), which last erupted in 1985, has forced evacuations; other historically active volcanoes include Late and Tofua

Trinidad and Tobago

Tunisia

Turkey (Turkiye)

severe earthquakes, especially in northern Turkey, along an arc extending from the Sea of Marmara to Lake Van; landslides; flooding

volcanism: limited volcanic activity; its three historically active volcanoes; Ararat, Nemrut Dagi, and Tendurek Dagi have not erupted since the 19th century or earlier

Turkmenistan

Turks and Caicos Islands

Tuvalu

Uganda

Ukraine

United Arab Emirates

United Kingdom

United States

tsunamis; volcanoes; 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; flooding; permafrost in northern Alaska, a major impediment to development

volcanism: volcanic activity in the Hawaiian Islands, Western Alaska, the Pacific Northwest, and in the Northern Mariana Islands; both Mauna Loa (4,170 m) in Hawaii and Mount Rainier (4,392 m) in Washington have been deemed Decade Volcanoes by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to their explosive history and close proximity to human populations; Pavlof (2,519 m) is the most active volcano in Alaska's Aleutian Arc and poses a significant threat to air travel since the area constitutes a major flight path between North America and East Asia; St. Helens (2,549 m), famous for the devastating 1980 eruption, remains active today; numerous other historically active volcanoes exist, mostly concentrated in the Aleutian arc and Hawaii; they include: in Alaska: Aniakchak, Augustine, Chiginagak, Fourpeaked, Iliamna, Katmai, Kupreanof, Martin, Novarupta, Redoubt, Spurr, Wrangell, Trident, Ugashik-Peulik, Ukinrek Maars, Veniaminof; in Hawaii: Haleakala, Kilauea, Loihi; in the Northern Mariana Islands: Anatahan; and in the Pacific Northwest: Mount Baker, Mount Hood; see note 2 under "Geography - note"

United States Pacific Island Wildlife Refuges

Baker, Howland, and Jarvis Islands: the narrow fringing reef surrounding the island poses a maritime hazard;

Kingman Reef: wet or awash most of the time, maximum elevation of less than 2 m makes Kingman Reef a maritime hazard;

Midway Islands, Johnston, and Palmyra Atolls: NA

Uruguay

Uzbekistan

Vanuatu

tropical cyclones (January to April); volcanic eruption on Aoba (Ambae) island began on 27 November 2005, volcanism also causes minor earthquakes; tsunamis

volcanism: significant volcanic activity with multiple eruptions in recent years; Yasur (361 m), one of the world's most active volcanoes, has experienced continuous activity in recent centuries; other historically active volcanoes include Aoba, Ambrym, Epi, Gaua, Kuwae, Lopevi, Suretamatai, and Traitor's Head

Venezuela

Vietnam

Virgin Islands

Wake Island

Wallis and Futuna

West Bank

World

Yemen

sandstorms and dust storms in summer

volcanism: limited volcanic activity; Jebel at Tair (Jabal al-Tair, Jebel Teir, Jabal al-Tayr, Jazirat at-Tair) (244 m), which forms an island in the Red Sea, erupted in 2007 after awakening from dormancy; other historically active volcanoes include Harra of Arhab, Harras of Dhamar, Harra es-Sawad, and Jebel Zubair, although many of these have not erupted in over a century

Zambia

Zimbabwe