Impacts throughout the Windward Islands were substantial , but most heavily concentrated in St. Lucia . There , gusts reached 69 mph ( 110 km/h ) , toppling trees and power lines . Torrential rainfall up to 26.3 in ( 668 mm ) created mudslides and landslides that damaged or destroyed numerous structures , bridges , and vehicles . Most of the island 's plantain and banana crops were destroyed . Up to 14 people were killed . Farther west in Curaçao , Tomas led to the most prolific rain event in four decades . An elderly man was killed after suffering a heart attack and drowning in his flooded vehicle , while a rescue worker died after a hospital wall collapsed . In Haiti , already ravaged by a catastrophic 7.0 MW earthquake less than a year prior , heavy rainfall flooded a refugee camp and triggered mudslides that destroyed homes and roads . Up to 35 people were killed there , though it was feared many more could die as Tomas exacerbated an already-deadly cholera outbreak
less than a year prior
2010 Haiti earthquake
2010 Atlantic hurricane season