during rainy season

South Africa
prolonged droughts

South Georgia and the South Sandwich Islands
the South Sandwich
Islands have prevailing weather conditions that generally make them
difficult to approach by ship; they are also subject to active
volcanism

Southern Ocean
huge icebergs with drafts up to several hundred
meters; smaller bergs and iceberg fragments; sea ice (generally 0.5
to 1 meter thick) with sometimes dynamic short-term variations and
with large annual and interannual variations; deep continental shelf
floored by glacial deposits varying widely over short distances;
high winds and large waves much of the year; ship icing, especially
May-October; most of region is remote from sources of search and
rescue

Spain
periodic droughts

Spratly Islands
typhoons; serious maritime hazard because of
numerous reefs and shoals

Sri Lanka
occasional cyclones and tornadoes

Sudan
dust storms and periodic persistent droughts

Suriname
NA

Svalbard
ice floes often block the entrance to Bellsund (a transit
point for coal export) on the west coast and occasionally make parts
of the northeastern coast inaccessible to maritime traffic

Swaziland
drought

Sweden
ice floes in the surrounding waters, especially in the Gulf
of Bothnia, can interfere with maritime traffic

Switzerland
avalanches, landslides, flash floods

Syria
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
very 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 very sensitive
to changes in sea level

Uganda
NA