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The U.K. and Ireland are bracing themselves for malarkey stop number of up to 100 mph ( 160 km / h ) as an explosive " bomb calorimeter cyclone " descends on the British Isles .

Storm Éowyn , pronounced " Ay - oh - win " andlikely inspiredby the " Lord of the Rings " case of thesame name , will convey some C , rainfall and superfast winds to the Republic of Ireland , Northern Ireland , and Scotland on Friday ( Jan. 24 ) .

Storm waves hitting Aberdeen Harbour in Scotland during Storm Babet in 2023.

Storm waves hitting Aberdeen Harbour in Scotland during Storm Babet in 2023.

The Irish meteorological armed service , Met Éireann , has issue its most severered weather warningfor all of Ireland , while the U.K. ’s Met Officeissued a cerise warningfor Northern Ireland and parts of Scotland . These monition mean that the storm poses a danger to sprightliness and will likely bring severe disruptions .

forecaster expect Storm Éowyn to crossbreed Northern Ireland early Friday morning and then move northeast toward Scotland on Friday good afternoon . The storm will also bring severe weather condition to England and Wales , accord to the Met Office .

" Storm Éowyn is a multi - hazard event , with coke potential for some , pelting for many and strong winds for much of the UK , " the Met Office ’s master meteorologist Paul Gundersen said in astatementreleased on Thursday ( Jan. 23 ) . " As a upshot , a identification number of weather warnings have been issued , with all component part of the UK covered by one warning at some decimal point on Friday . "

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The low pressure named # StormÉowyn currently has a key air pressure of 1001 hPa , but this is have a bun in the oven to drop by 62 hPa in the next 30 hours 👀 This is known as explosive cyclogenesis or a weather bomb and will bring damaging jazz to some areas on Friday ⚠ ️ pic.twitter.com/N8iooq5pl1January 22 , 2025

Storm Éowyn ’s rigor is tied to the Arctic irruption andhistoric snowstormsthat have blasted the U.S. this week . The Arctic air over North America clash with warmer sub - tropical air below the East Coast , fuel a powerful reverse lightning stream coming out of North America towards the U.K. , which will step up the storm , according to theMet Office .

Snow-covered summit of Mount Washington at sunrise.

Ambrogio Volonte , a cyclone enquiry scientist at the University of Reading in the U.K. , noted in astatementreleased by the university that Storm Éowyn is explosively developing , which means it is escalate at an exceptional charge per unit as air insistence at sea level plumb .

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" This speedy strengthening fall out when a powerful jet plane watercourse eminent in the atmosphere aggregate with a precipitous contrast in temperatures and moisture at the ocean ’s surface , creating the perfect conditions for the organization to farm into a particularly intense and dangerous storm , " Volonte say .

Storms with an explosive pressure dip like this one are also called " bomb cyclones " or " weather bombs . " The storm could rival deadly and prejudicious storm such as Storm Eunice , which hit in 2022 . Falling trees kill four citizenry in the U.K. and Ireland during Storm Eunice , while more than a million plate lost power for several day , accord to theMet Office .

Two reconstructions showing the location of the north polar vortex over the Arctic on March 1, 2025 and over Northern Europe on March 20, 2025.

" In fact , Storm Éowyn ’s construction mirror some of the most unnerving storm of late decades , and its predicted strength puts it steadfastly in the ranks of the strongest we ’ve experienced , " Volonte append .

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