At least 110 people have been killed in landslides and flooding triggered by heavy rains in the western Indian state of Maharashtra.
The rains overwhelmed hundreds of villages, sweeping away houses and leaving residents stranded.
Rescue crews have been racing to evacuate survivors but many people are feared missing.
The Indian military has been helping the efforts, which have been hampered by difficult conditions.
The western state has recorded its heaviest spell of July rain for decades.
Many factors contribute to flooding, but experts say climate change caused by global warming makes extreme rainfall more likely.
On Friday Indian officials said most of the deaths had been caused by landslides and flooding in two districts.
The officials said at least 38 people died when a landslide flattened a small village to the south-east of Mumbai, India's financial capital.
The state's chief minister, Udhav Thackeray, called an emergency meeting, where he asked officials to provide aid to those affected.
#MaharashtraRains UPDATE— ѕαtчα prαdhαnसत्य नारायण प्रधान ସତ୍ଯପ୍ରଧାନ-DG NDRF (@satyaprad1) July 23, 2021
Due to hvy rains in KonkanDiv
NDRF OPS CONTINUE
In action here today
Helping Citizens to safety@HMOIndia @BhallaAjay26 @PIBHomeAffairs @PIBMumbai @ANI pic.twitter.com/KyoliAh0Xz
He said authorities were evacuating people from vulnerable areas as they released water from dams that were threatening to overflow.
Indian Prime Minister Narendra Modi said he was "anguished by the loss of lives" and would provide assistance to the affected.
The Indian navy and disaster authorities have been sent to help rescue operations in coastal areas.
One coastal district has been completely cut off after bridges and mobile towers in the area collapsed.
Authorities have asked stranded residents to go to rooftops from where the rescuers in helicopters can spot them.
In Mumbai, two people died and 10 others were injured after a residential building collapsed in a region of the city on Friday.
Train services have been suspended and the city's low-lying areas have turned into flood zones.
Weather experts say heavy rains will continue to lash the city over the next few days.
Heavy rains in Mumbai are not uncommon. The city experiences flooding every year during the monsoon season, but the intensity of the rains has increased in recent years.
Thousands of people migrate to the city every day in search of jobs.
This fuels rapid - and often unregulated - construction, forcing many to live in poor quality buildings.