A rare tropical cyclone has slammed into Yemen, triggering heavy flooding and causing "enormous" damage in a region of the war-racked country dominated by Al-Qaeda, a senior official said.
Packing winds of more than 100km/h, Cyclone Chapala made landfall in the southeastern provinces of Hadramawt and Shabwa, Minister of Fisheries Fahd Kafain told AFP.
"The damage is enormous and we fear human losses," said the minister, part of a commission set up to deal with the cyclone that brewed in the Arabian Sea.
The World Health Organisation said that it had delivered trauma kits for 1000 patients in Mukalla and was providing fuel for hospitals and ambulances.
It said Hadramawt and Shabwa had a combined population of about 1.8 million people including more than 100,000 internally displaced and 27,000 refugees and migrants.
The storm earlier wreaked havoc on the island of Socotra located 350 kilometres off the Yemeni mainland.
More than 200 people were injured and dozens of houses and hamlets were severely damaged or washed away, said Salem Zaher, mayor of the island's main district Hadibo.
Images posted on social media showed heavy floods hitting the streets of Mukalla, the provincial capital of Hadramawt, bringing further misery to Yemenis already beset by poverty and rampant unrest.
The Yemen Post newspaper described the city as being "under water", saying on Twitter that Chapala "drowns city with 40 inches of water."
Cars were half-submerged in muddy water while seafront roads were badly damaged by high waves.
"The rainfall from Chapala is far beyond anything ever witnessed in this arid area which is not used to cyclones," the UN weather agency said on Monday (local time).
The "very severe cyclonic storm" brought maximum sustained winds of 130km/h with gusts of up to 145km/h when it made landfall, it said in a joint update Tuesday with India's meteorological agency.
But Chapala has since rapidly lost strength, it said.