(Bloomberg) – Category 2 Hurricane Ophelia is threateningeverything from farms to a golf course owned by the family of U.S.President Donald Trump as it heads for Ireland.

Monday landfall

Ophelia's top winds were 100 miles (155 kilometers) an hourby 3:40 p.m. London time on Friday, reaching the second level ofthe five-step Saffir-Simpson scale. The storm, about 545 milessouthwest of the Azores, is forecast to stay a powerful cycloneover the next few days, and may scrape the west coast of Ireland onMonday before dissipating over Scandinavia, the U.S. National Hurricane Center said in anadvisory.

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After Hurricane Irma closed Trump's Mar-A-Lago inFlorida last month, Ophelia could make landfall close to the Trumpfamily's golf resort near the village of Doonbeg. The resort, whichhas said it can lose as much as 10 meters of land to coastalerosion during a bad storm, is along the route expected to behit by Ophelia's gale force winds. Trump International Golf Links& Hotel is constantly reviewing the situation, a spokesman saidby email.

“At the moment, in one model the actual center in Ophelia isbasically supposed to rub the west coast of Ireland,” said DavidReynolds, senior meteorologist at The Weather Co. In Birmingham,England. “It's really touch and go.”

Deadly Debbie

Ophelia could become the strongest post-tropical system to rakeIreland since Hurricane Debbie in 1961, which killed 18 people andstripped almost 25% of the trees in some areas, according toWeather Underground. Sixty people died in a plane crash in theAzores caused by Debbie.

The Irish government is monitoring the situation, a spokesmansaid in an emailed statement. It will decide later Friday whetherto convene a taskforce to co-ordinate its response to thestorm.

Ophelia will move across the country very quickly and may bringheavy rain, if it makes landfall, Gerald Fleming, head offorecasting at the Irish weather service, said on RTE radio Friday.The storm could pummel the Cork and Kerry coast but it's stillthree or four days away.

Damages could reach $800M in Ireland

Using the current forecast track from the National HurricaneCenter, damages could reach $800 million in Ireland and $300million in the U.K., as well as tens of millions in France, Spainand Portugal, according to Chuck Watson, a disaster modelerat Enki Research in Savannah, Georgia. Using European forecasts,those numbers could be cut in half.

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“My subjective guesstimate is more like $600 million in Irelandand under $100 million for the U.K.,” Watson said. Debbie's damageswould've reached $338 million in today's dollars.

Ireland's Met Eireann weather office and the Met Office in theU.K. issued yellow warnings for Monday, meaning residents need tobe aware of encroaching risks.

“Power cuts may occur, with the potential to affect otherservices, such as mobile phone coverage,” the Met Office said inits warning. “Some damage to buildings, such as tiles blown fromroofs could happen, perhaps leading to injuries and danger to lifefrom flying debris.”

Unusual hurricane path

It's unusual for a hurricane to head toward northwest Europe.The Atlantic hurricane season, usually a bigger threat to the U.S.,Mexico and Caribbean, has produced 15 named storms, including 10consecutive hurricanes — the most since the late 19th century.The storms have killed hundreds and caused an estimated $300billion in damage across Central America, the Caribbean and theU.S.

Other important items to know about Ophelia

• Two well-known computer forecast models were split Thursday onwhether Ophelia would strike the southwest of Ireland near countiesKerry and Cork, said Bob Henson, a meteorologist at WeatherUnderground in Boulder, Colorado.
• The U.S. Global Forecast System keeps the hurricane offshore,while the European Centre for Medium Range Weather Forecasts modeltakes it into Ireland sometime Monday.
• As the storm approaches, the U.K. is forecast to see a weekendof unseasonably warm weather, thanks to the movement of warm,tropical air. Temperatures could be “in the low 20s” Celsius,according to Reynolds. That's about 72 Fahrenheit.
• The U.S. has been struck by six storms, four of which werehurricanes. Europe got a taste of the stormy conditions earlierthis month when the remnants of hurricanes Maria and Lee helpedpush U.K. wind power generation toward a record.
• Winds from Ophelia may also boost wind production. U.K. windgeneration is forecast at 8,902 megawatts on Oct. 17, almosttouching Oct. 1's record.
• Wind farms may be turned off if winds reach 85 miles per hours,according to Stephen Lilley, partner at Greencoat Capital LLP,which manages funds that invest in wind farms including four inNorthern Ireland.

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