Seven more killed in Oman following tropical storm Shaheen

DUBAI (Reuters) -Seven more people were killed in Oman as heavy winds and rain swept through the country after tropical storm Shaheen made landfall, the national emergency committee said on Monday on its official Twitter account.

Four people had been killed on Sunday, including a child.

Latest data showed that the storm had subsided, the civil aviation authority said on Monday, warning that scattered rainfall was still expected.

It urged citizens to be careful crossing valleys and avoid low-lying areas.

When the eye of the storm crossed land, Shaheen was carrying winds of between 120 and 150 km per hour (75-93 mph), Omani authorities said. It was throwing up waves of up to 10 meters (32 feet).

Video footage from Omani broadcasters showed vehicles submerged as people tried to make their way through muddy brown floodwater. State TV showed people in flooded areas being rescued by helicopter. People walked along flooded streets, while a tractor ploughed through mud.

Up to 500 mm (20 inches) of rain was expected in some areas, raising the risk of flash floods.

Cyclones steadily lose their power over land and Shaheen was downgraded to a tropical storm after it cleared the ocean, the meteorology service said on Twitter.

(Reporting by Lilian Wagdy; Writing by Nadine Awadalla and Michael Georgy; Editing by Toby Chopra and Giles Elgood)

Two storms head for U.S. Gulf in rare hurricane season event

By Liz Hampton

(Reuters) – A pair of tropical cyclones forecast to become hurricanes early next week are headed for the U.S. Gulf Coast and will spin over the Gulf’s warm waters simultaneously, a rare weather event that could cause massive disruption as they make landfall.

The last time two cyclones entered the U.S. Gulf of Mexico was in 1959, according to meteorologists interviewed by Reuters, and there have only been a handful of other occasions when two storms entered the Gulf simultaneously. In 1933, a Category 3 hurricane and moderate tropical storm hit the U.S. Gulf of Mexico, but there haven’t been records of two hurricanes in the Gulf of Mexico at the same time.

Tropical Storm Laura and a separate tropical depression brewing near Honduras could make landfall as hurricanes next week in an area spanning Texas to the Florida Panhandle, according to the National Hurricane Center.

Meteorologists say there is still a lot of uncertainty around the systems and how they develop and move in coming days, particularly as they cross land.

Both storms currently look on track to remain separate, however, any interaction between the two could change their intensity or trajectory, said Dan Kottlowski of AccuWeather. It is unlikely they would combine, he added.

“More than likely one will become stronger, and inflict more vertical wind shear causing the other to weaken,” Kottlowski. “But if they stay of equal strengthen, then they will probably prevent each other from getting really strong.”

In some cases when storms interact, they can orbit each other and the speed of one cyclone could accelerate the other, part of something known as the “Fujiwhara effect,” said David Streit of Commodity Weather Group.

Tropical Storm Laura, which is currently east of the Antilles, was upgraded from a depression on Friday and currently has sustained winds of 45 miles per hour, according to the NHC. Laura is forecast to make landfall as a hurricane on Wednesday in an area spanning Louisiana to the Florida panhandle.

Tropical Depression 14, which would be named Marco if it strengthens, is on track to make landfall on Tuesday near the Texas and Louisiana border. It would arrive around the three-year anniversary of Hurricane Harvey, which dumped a record 50 inches of rain on parts of Houston in August 2017 and caused billions of dollars in damage.

“Tropical Depression 14 doesn’t look robust right now, but it looks to be in an environment conducive to strengthening,” said Phil Klotzbach, a research scientist at Colorado State University.

AccuWeather’s Kottlowski said that Tropical Depression 14 is likely to become the stronger storm as it is slated to pass over a relatively flat area of the Yucatan Peninsula before entering the warm waters of the Gulf of Mexico, where it can gain strength.

(Reporting by Liz Hampton; Editing by Simon Webb and Aurora Ellis)