Rescue workers are rushing to locate survivors of the deadly earthquake that struck Haiti on Saturday as a tropical storm is heading towards the Caribbean nation.
Tropical Depression Grace is expected to pass over the worst affected area later on Monday.
It is feared heavy rain brought by Grace could trigger landslides.
Roads already made impassable by the quake could be further damaged by the rains, so aid teams are racing to get essential provisions to the quake-hit region before Grace hits.
A tropical storm watch is in effect for the entire coast of Haiti as well as for the neighbouring Dominican Republic.
Humanitarian organisations say survivors need drinking water and shelter. More than 30,000 families have reportedly been left homeless.
Homes, churches and schools were among buildings flattened in the quake. Some hospitals were left overwhelmed and in need of supplies as they struggled to treat the injured, of whom there are an estimated 5,700.
The earthquake compounds problems facing the impoverished nation, which is already reeling from a political crisis following the assassination of its president last month.
The south-west of Haiti appears to have suffered the worst of the damage, especially around the city of Les Cayes.
Footage on social media showed residents desperately trying to pull victims from ruined buildings.
But the tremor could be felt in the densely-populated capital of Port-au-Prince, some 125km away, and in neighbouring countries.