ria
dust storms, sandstorms

Taiwan
earthquakes and typhoons

Tajikistan
earthquakes and floods

Tanzania
flooding on the central plateau during the rainy season;
drought

Thailand
land subsidence in Bangkok area resulting from the
depletion of the water table; droughts

Togo
hot, dry harmattan wind can reduce visibility in north during
winter; periodic droughts

Tokelau
lies in Pacific typhoon belt

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

Trinidad and Tobago
outside usual path of hurricanes and other
tropical storms

Tromelin Island
NA

Tunisia
NA

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

Turkmenistan
NA

Turks and Caicos Islands
frequent hurricanes

Tuvalu
severe tropical storms are usually rare, but, in 1997, there
were three cyclones; low level of islands make them sensitive to
changes in sea level

Uganda
NA

Ukraine
NA

United Arab Emirates
frequent sand and dust storms

United Kingdom
winter windstorms; floods

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

United States Pacific Island Wildlife Refuges
Baker, Howland, and
Jarvis Islands: the narrow fringing reef surrounding the island can
be a maritime hazard
Kingman Reef: wet or awash most of the time, maximum elevation of
less than 1 m makes Kingman Reef a maritime hazard
Midway Islands, Johnston, and Palmyra Atolls: NA

Uruguay
seasonally high winds (the pampero is a chilly and
occasional violent wind that blows north from the Argentine pampas),
droughts, floods; because of the absence of mountains, which act as
weather barriers, all locations are particularly vulnerable to rapid
changes from weather fronts

Uzbekistan
NA

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

Venezuela
subject to floods, rockslides, mudslides; periodic droughts

Vietnam
occasional typhoons (May to January) with extensive
flood