Southern and central states from California to Mississippi face heat indexes above 100F amid another heat dome

At least 40 million people were under extreme heat warnings across central and southern parts of the United States on Sunday as high temperatures and severe humidity gripped large swaths of the country for a second straight day.

Heat indexes well above 100F (38C) stretched from Minnesota down to Mississippi, extending west into southern California and Nevada. Parts of the south-west were expected to see highs of 120F (49C), according to the National Weather Service.

Temperatures of 95-105F (35-40C) are expected, spanning Gulf of Mexico coast to the Great Plains and the midwest

About 70 million people in the US are set to face excessive heat advisories as dangerously hot temperatures scorch much of the country’s southern and central states.

The third major “heat dome” event to hit the US in the past month is gathering strength over the weekend, spanning a vast swathe of the country, from the Gulf of Mexico coast to the Great Plains and the midwest.

Forecasters warn of US coastal flooding, heavy rain and dangerous surf as the storm tracks west

Tropical Storm Bertha made landfall in Louisiana on Wednesday afternoon, and is moving westward toward the Texas coast, where it is expected to reach later on Thursday, bringing rainfall, winds and rising water levels.

In a Thursday morning update, the US National Hurricane Center (NHC) said that Bertha was moving west and that the center of the tropical storm was expected to move near or along the Louisiana and upper Texas coasts over the next several hours before moving inland over Texas on Thursday evening.

Torrential rains in West Virginia have caused flash flooding that inundated homes and businesses. Authorities say the floods washed out bridges and led to numerous water rescues in portions of the state. Patrick Morrisey, West Virginia's governor, declared a state of emergency for all 55 counties on Tuesday night. No deaths were immediately reported. Morrisey sent 100 national guard members to the hardest-hit areas in the northern portion of the state with an additional 200 members expected to arrive by late Wednesday morning. The rains were part of wide-ranging storms that produced reports of tornadoes in several states

State’s governor had declared a state of emergency for all 55 counties, and deployed 500 national guard members

Patrick Morrisey, the West Virginia governor, said at least two people were unaccounted for in Upshur county, after torrential rain caused flash floods in parts of the state.

Speaking at a news conference, Morrisey said that during search-and-recovery operations state police found an overturned vehicle in Upshur county believed to be “connected to two individuals who were reported missing”.

In Kentucky and West Virginia, rescuers freed trapped residents as states face catastrophic floods and damage

Tropical storm Bertha made ‌landfall in ‌St Bernard parish, on the Gulf coast south-east of New Orleans, Louisiana, on Wednesday afternoon, the ⁠US national ⁠hurricane ⁠center said.

The Miami-based forecaster ‌added that maximum ​sustained winds were estimated ⁠to be ​45mph (75km/h) ‌with higher ​gusts.

Storm warnings stretch from Florida to Louisiana as Bertha brings heavy rain, flooding risk and possible tornadoes

Tropical Storm Bertha strengthened in the Gulf of Mexico on Tuesday but was expected to weaken this week as it chugs closer to the US, potentially bringing coastal flooding and heavy rain from the Florida Panhandle to Louisiana.

Those areas along the northern Gulf coast were under a tropical storm warning through Wednesday and could see rain and flooding into Thursday morning, the Miami-based National Hurricane Center said. New Orleans also was under a tropical storm warning.

Bertha could bring heavy rain on US Gulf coast, with its center located 110 miles south of Panama City, Florida

Tropical Storm Bertha formed Monday evening in the Gulf of Mexico south of the Florida Panhandle as it drifts erratically toward populated coastal areas, bringing a threat of heavy rain, storm surge and damaging wind gusts.

Meanwhile, in the eastern Pacific Ocean, Hurricane Fausto formed far from Mexico’s Baja California peninsula and posed no threat to land Monday night.

Victims were Provo’s fire captain, his wife and their three sons, who were hiking in Bicknell amid heavy rains

Five family members who had set out for a day of hiking were killed after a flash flood swept through canyons of southern Utah on Friday, law enforcement officials said.

The victims were a captain in the Provo fire department, his wife and their sons, according to fire officials. A daughter who was not on the trip survived.