BBC

Live Reporting

Edited by Charlotte Hadfield, Craig Hoyle and Tinshui Yeung, with reporting from BBC Nepali, Azadeh Moshiri in Kathmandu, and Laura Bicker in Beijing

SUMMARY
- Rescuers in Nepal and Tibet are racing to search for survivors after Wednesday's flash flood destroyed homes, swamped roads and swept away bridges
- More than 900 people are missing and at least 389 have died in Nepal
- The US Geological Survey says "glacial collapse and debris flow" triggered the deluge - and there are risks of more floods
- A lake of rising water has formed at a site along the China-Nepal border - prompting fears it could burst its banks, reports Laura Bicker in Beijing
- In Tibet, at least 558 people are missing, with three confirmed dead, but it's not clear if these figures overlap with Nepal's
- On both sides of the border, hundreds of foreigners are missing - Nepal says that includes 178 tourists from India, 65 Americans, and 33 from the UK. Dozens of army and police personnel are also missing

The Nepalese Tourism Board says 667 people are missing following the flash floods close to the Nepal-Tibet border.

This includes 540 foreign nationals from 31 countries, as well as 127 Nepalese citizens, it adds in a post on social media.

There are 178 Indian nationals missing, the highest of any country, along with 65 from the US, 53 from Ukraine, 51 from Malaysia, 35 from Australia and 33 from the UK.

The tourism board also says 31 foreign nationals - from India, South Korea, the USA, Russia, Italy, Bulgaria and Switzerland - have been rescued from the affected areas.

In a previous update, Nepal's National Disaster Risk Reduction and Management Authority said 910 people were missing and remained uncontactable following the floods.

Both organisations have been providing differing figures through separate updates.

On Wednesday morning, a huge surge of mud and water swept down from the Nepal-Tibet border, leaving destruction in its path. Since then, the number of dead and missing has climbed, while rescue and recovery efforts have been under way.

This is how the last 40 hours have played out:

Wednesday
08:37 local time in Nepal (02:52 GMT): A magnitude 5.2 seismic event occurs near the Nepal-Tibet border. This was initially thought to be an earthquake, but the US Geological Survey (USGS) has since said it was a glacial collapse.

The USGS says the flow of debris from the collapse led to "subsequent catastrophic impacts downstream".

Moments later: A wall of water and other material crashes downstream, taking buildings, roads and vehicles in its wake.

14:45: Authorities say 384 tourists are missing, including 291 foreign nationals. Nepalese authorities later confirm that 33 Britons are among those missing.

By 17:00: Nepalese police tells the BBC that at least 17 people have been killed.

22:45: The Nepalese prime minister's office says search and rescue operations will continue throughout the night, with civilian and military personnel mobilised.

Thursday
By 08:00 local time (00:00 GMT) in Tibet: China says three people were killed on the Tibetan side, while 558 others are missing.

Shortly after 07:15 (01:30 GMT) in Nepal: Nepalese police say they have recovered 162 bodies so far. This figure has continued to rise throughout the day - and currently stands at 389.

Mid-morning: The Dalai Lama, the spiritual leader who lives in exile from Tibet, says he is praying "for all those who have lost their lives".

14:00 in Nepal: An update from authorities puts the number of missing people at more than 900, including more than 500 foreign nationals.

The most recent update from Nepal police says that the number of injured and rescued people in the country now stands at 466, and it breaks it down by district.
- Rasuwa, the closest district to where the initial landslide occurred - 289
- Nuwakot - 90
- Dhading - 3
- Kathmandu - 84

We're getting different figures from various agencies in Nepal. Earlier, we heard from the country's prime minister that at least 573 people have been rescued today.

The number of people killed in Nepal by flash flooding has risen to 389, according to Nepal police.

This is an update from the previous death toll of 359 given by authorities a few hours ago.

As we've been reporting, the US Geological Survey has said flash floods were sparked by a glacial collapse in the mountainous area close to the Nepal-Tibet border.

This resulted in seismic activity and caused "catastrophic" impacts downstream of the Trishuli river, as floodwaters spread into several regions in Nepal.

The Rasuwa district is the closest to the origin of the floods, while the neighbouring Nuwakot district has also been severely impacted.

In its latest update, Nepal police says of the 359 bodies recovered so far, 17 were recovered from Rasuwa and 28 in Nuwakot.

It added that 132 bodies have been recovered in Chitwan, which is where the Trishuli runs its course and flows into the Seti Gandaki river.

The Chinese foreign ministry has said 260 of the 558 people missing are tourists or pilgrims. We don't know how many of the remaining are Tibetans, and how many are Chinese people who have moved there to run businesses or work on infrastructure projects.

Rescue efforts in China are being led by the People's Liberation Army, but state media said they face multiple challenges. The Air Force did manage to use a brief weather window to fly a drone over the area to try to find survivors and assess how safe it was for rescue teams to enter.

The border town of Gyirong is the main crossing for people and traffic heading between Nepal and China. Video footage appears to show a crushing wall of water crashing through buildings and washing away trucks and cars.

Thousands of pilgrims were making a journey along this route from Nepal towards a sacred mountain in Tibet. This is also one of the most controlled and politically sensitive regions of China.

Access to Tibet is restricted for foreigners. All the information we receive is from Chinese state media which is also carefully controlled.