A cyclone with hurricane-force winds made landfall on Yemen's Arabian Sea coast yesterday, flooding the country's fifth-largest city Mukalla and sending thousands of people fleeing for shelter.

Officials and meteorologists say the storm is the most intense in decades in the arid country, whose storm response is hampered by poverty and a raging civil war. In the provincial capital Mukalla, whose 300,000 people are largely ruled by al Qaeda fighters since the army withdrew in April, water submerged cars on city streets and caused dozens of families to flee to a hospital for fear of rock slides.

Residents said the seafront promenade and many homes had been destroyed by the cyclone, called Chapala, and officials in the dry hinterland province of Shabwa said about 6,000 people had moved to higher ground. "The wind knocked out power completely in the city and people were terrified. Some residents had to leave their homes and escape to higher areas where flooding was less; it was a difficult night but it passed off peacefully," said Sabri Saleem, who lives in Mukalla.

There were no initial reports of injuries. Meteorological agencies predicted Chapala would hit land around Balhaf, site of Yemen's liquefied natural gas terminal, and weakening as it advanced towards the capital Sanaa in the country's north. The facility has been mostly shuttered since the start of a war in March between a Saudi-led Arab military coalition and the Iran-allied Houthi movement which controls Sanaa. It was not immediately clear if the terminal, once a lifeline for Yemen's weak economy, suffered damage.