(Bloomberg) -- Storm Isha is disrupting travel and causing power blackouts across northern Europe, as hurricane-force winds lash the UK and other parts of the region.

The Met Office’s yellow weather warning for the UK was set to end at midday on Monday, after overnight wind gusts of as strong as 99 miles (159 kilometers) per hour. Northern France and the Netherlands also face alerts, while flood and avalanche warnings were in place for the west coast of Norway.

This morning, about 235,000 homes, farms and businesses in Ireland were without power, with Mayo, Galway, Roscommon and Kerry among the worst impacted counties. More than 300,000 customers have been reconnected in the UK, leaving about 70,000 still without power.

Isha — the ninth named storm to hit the UK this season — will be swiftly followed by Jocelyn, bringing strong winds and heavy rain on Tuesday and Wednesday. Global warming is not only increasing the intensity of heat waves — with 2023 the hottest year on record — but also hurricanes and typhoons as warmer water and moister air provide additional fuel for storms.

The extreme weather in Europe follows a deep freeze in the US, which tested power grids and disrupted travel with snow and icy conditions. The freezing temperatures also knocked out millions of barrels of US oil production, limited some refining capacity on the Gulf Coast and hindered natural gas flows.

In Amsterdam, Schipol airport canceled about 130 flights on Monday and warned of delays as wind gusts reach more than 100 kilometers per hour. Power was restored this morning to most of the 68,000 customers cut off by an outage in the Dutch capital, which also halted trams.

Flights were also delayed or canceled across the UK and Ireland, with severe disruptions to rail services in Scotland.

Oslo’s public transport operator is advising against all but essential travel due to rain and icy roads. All departures on the rail line between the capital and the west coast city of Bergen have been halted. Huge waves in the North Sea are delaying helicopters flights to offshore oil and gas platforms.

Read More: Chaos Grips UK Airports as Storm Strands Travelers Across Europe

While cutting off power to thousands of homes, Storm Isha also depressed energy prices across the region as wind generation soared.

Benchmark European gas futures fell as much as 6.4% on Monday to the lowest since July. In the UK, wind power made up about half of the nation’s energy mix, according to data from National Grid Plc. 

Intraday power prices in Germany fell below zero for several hours on Monday morning, dropping as low as -€14.88 a megawatt-hour on Epex Spot SE. Power prices turn negative when supply outstrips demand.

Power Record

Production from thousands of turbines in Germany reached as high as 48,146 megawatts on Monday, according to data from the European Energy Exchange AG. That compared with the record of 53,022 megawatts reached just before Christmas.

Nordic wind power output surged to a record 25,723 megawatts. Orange and yellow weather warnings were issued by Sweden’s national forecaster SMHI for strong winds and heavy rain.

Storm Isha heralds a period of much warmer weather across the region. London will reach 13.5C on Tuesday, while Paris will climb to 14C on Wednesday, according to Maxar Technologies Inc. The western Mediterranean will be even warmer, with Madrid hitting 18.5C on Friday.

--With assistance from Rachel Morison, April Roach, Thomas Hall, Sarah Jacob, Eamon Akil Farhat, Stephen Treloar and Sophie Caronello.

(Updates with storm Jocelyn in fourth paragraph)

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