Central America is struggling to recover after the first eastern Pacific tropical storm of the season, Agatha, hammered the region with heavy rains that killed 179 people and washed away thousands of homes.
Hardest hit was Guatemala, where 152 people died, dozens were injured and at least 100 people remain missing following the floods and mudslides that swept away ramshackle houses along hills and destroyed bridges and roads, complicating rescue efforts.
President Alvaro Colom released a photograph of a sinkhole in the capital that swallowed up an entire three-story building.
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In countries on the mountainous and mostly poor isthmus linking North and South America, the poorest people often build their humble homes near rivers so they have access to water, only to have their homes endangered in the rainy season by swollen rivers and mudslides.
Tropical Storm Agatha, which dumped heavy rain on the isthmus ahead of the first day of the Atlantic hurricane season, left as many as 22,000 dwellings destroyed in Guatemala and 155,000 people forced from their homes, about half of whom remained in shelters.
Tens of thousands homeless
Seventeen people were killed in Honduras and 10 people died in El Salvador as a result of the storm, according to official figures.
With millions of dollars in damages and the impoverished population particularly hard hit, the United States pledged 112,500 dollars and sent a plane carrying relief supplies; the European Union pledged 3.6 million dollars in humanitarian aid.
A US plane carrying helicopters and supplies was due in Guatemala City from its base in Honduras with four choppers from which emergency aid can be delivered to the Guatemalan Air Force, at Colom's request.
Guatemala City's response was hampered by a separate emergency: the eruption of nearby Pacaya volcano whose ash forced the closure of the capital's Aurora international airport since last week, when two people were also killed and three went missing. That left thousands of travelers stranded.
But Guatemala City's international airport, closed since Thursday, was reopened on Tuesday to commercial and freight flights, said civil aviation spokeswoman Monica Monge.
The World Bank said it was finalizing an 85 million dollar loan to Guatemala, to help it cope with the two disasters.

