Article published on the 2008-10-26 Latest update 2008-10-26 13:15 TU
Most of the dead were drowned in floods in Hadramaut and Mahara province on Thursday and Friday but at least six people have been killed by lightning.
More than 500 houses were destroyed across Hadramaut and 3,500 families have been made homeless. Thousands of people have been stranded by floods, while aircraft and helicopters have been mobilised to take them help.
The OIC called the situation a "national catastrophe" and its chief Ekmeleddin Ihsanoglu called for Islamic and international solidarity.
The Unesco world heritage site of Shibam, which has 20,000 residents, is cut off by flood waters. It is famous for its high-rise mudbrick buildings, most of which were built in the 16th century.