Extreme weather conditions and an ageing power grid, which needs immediate upgrades, are behind power interruptions across the US.
Extreme weather catastrophes linked to climate change have made 2021 the second-most costly year on record for global insurance firms.
Experts say extreme weather, combined with poor infrastructure which hasn't kept pace with population stretched New York to breaking point.
Most of those who died in Ida's mass flooding perished either in their cars after they became submerged, or after attempting to flee their vehicles in fast-moving waters.
US East Coast faces surging rivers, tornado damage and continuing calls for rescue as Hurricane Ida batters the region with record-breaking rain as death toll climbs to 45.
Louisiana, Mississippi states take stock of disaster inflicted by powerful Ida as death toll rises to four.
The storm blasted ashore as one of the most powerful ever to hit the US, knocking out power to all of New Orleans, blowing roofs off buildings and reversing the flow of the Mississippi River.
Ida rapidly intensified overnight as it moved through some of the warmest ocean water in the world in the northern Gulf of Mexico, with top winds growing by 72 kph in five hours.
Forecasters said Ida could make a US landfall as an "extremely dangerous" Category 4 storm on the five-step Saffir-Simpson scale, generating winds of 225 kph with heavy downpours.
People were evacuating high-risk areas and lining up to buy supplies as Louisiana braced for Hurricane Ida, which was expected to strengthen to an "extremely dangerous" Category 4 hurricane when it hits the southern United States this weekend.
Hurricane Florence smashed into the US East Coast on Friday with howling winds, torrential rains and life-threatening storm surges as emergency crews scrambled to rescue hundreds of people stranded in their homes by flood waters.
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