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 very sensitive
to changes in sea level

Uganda:
NA

Ukraine:
NA

United Arab Emirates:
frequent sand and dust storms

United Kingdom:
NA

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

Uruguay:
seasonally high winds (the pampero is a chilly and
occasional violent wind which 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 in weather fronts

Uzbekistan:
NA