Tropical Storm Debby could help play a role in bringing temperatures in the mid-30s to the UK next week.
This week, with the threat of torrential downpours and flooding, Debby raked Florida with heavy rain and high winds before moving into the US southeast.
By Tuesday, the storm had killed six people and caused serious flooding in the US, after making landfall on Monday as a Category 1 hurricane, before weakening to a tropical storm in the afternoon.
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Over the coming days, the storm will continue to hit parts of the east and southeastern US.
It could bring as much as 600mm (23in) of rain – around half the yearly average – to the Carolinas.
However, later in the week, it will gradually weaken and start to break up.
But even as it does, it will play a role in influencing UK weather, possibly helping to send temperatures spiking to the hottest they have been this year.
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The storm itself will not impact the UK, but the influence of Debby will play a role in the medium range forecast, the Met Office has said.
Debby will not reach the UK, but its system and remnants will act as a background influence as it affects the strength and shape of the jet stream – which often plays a significant role in UK weather.
Met Office deputy chief meteorologist Nick Silkstone said: “Debby in North America will help to strengthen and veer the direction of the jet stream and this means this ribbon of air is likely to shift further to the south.
“This southwards dip in the jet stream will likely be located across the mid-Atlantic this weekend and early next week, allowing southwesterly flow across the UK.
“During this time a hot and perhaps very hot airmass could develop and be advected into the southeast of the UK.
“On balance it now looks likely that temperatures will reach 30C, with around a 30% chance that temperatures could reach the mid-30s Celsius early next week.
“Debby plays a role in developing this forecast hot spell.”
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However, the warm weather will not be enjoyed by all of the UK.
Some parts could still see “periods of heavy rainfall” and even “severe thunderstorms breaking out”.
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The Met Office has said that the northern extent of the hot airmass will most likely be across central and northern parts of the UK and “will likely see periods of heavy rainfall moving northeast, and within the hot airmass there is a chance of some severe thunderstorms breaking out”.
As the dip in the jet stream likely continues east towards the middle of next week, the UK could be left on the colder side, eventually feeling more changeable with cooler conditions later on.
It could also be “unseasonably windy” in some west and northwestern areas.
