Saint Helena:
active volcanism on Tristan da Cunha
Saint Kitts and Nevis:
hurricanes (July to October)
Saint Lucia:
hurricanes and volcanic activity
Saint Pierre and Miquelon:
persistent fog throughout the year can be
a maritime hazard
Saint Vincent and the Grenadines:
hurricanes; Soufriere volcano on
the island of Saint Vincent is a constant threat
Samoa:
occasional typhoons; active volcanism
San Marino:
NA
Sao Tome and Principe:
NA
Saudi Arabia:
frequent sand and dust storms
Senegal:
lowlands seasonally flooded; periodic droughts