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Hot weather: Rail services disrupted on UK's hottest day Hot weather: Rail services disrupted on UK's hottest day
(about 1 hour later)
Commuters are facing delays as soaring temperatures affected train services on the hottest day of the year so far.Commuters are facing delays as soaring temperatures affected train services on the hottest day of the year so far.
Temperatures have already exceeded 33.4C (92F) in southern England, and are due to pass 35C (95F) in south-east England, 30C in Wales, 29C in Scotland and 28C in Northern Ireland. The highest temperature so far was 33.5C (92F) in Oxfordshire, and it could pass 35C (95F) in south-east England, 30C in Wales, 29C in Scotland and 28C in Northern Ireland.
Heat buckled a rail in North Yorkshire, and speed limits are in place on some lines due to "high rail temperatures".Heat buckled a rail in North Yorkshire, and speed limits are in place on some lines due to "high rail temperatures".
In Staffordshire, a man died after reportedly jumping into a canal. In Staffordshire on Monday, a man died after reportedly jumping into a canal.
Reports suggested the 46-year-old jumped into the water in Burton-on-Trent to "cool off".Reports suggested the 46-year-old jumped into the water in Burton-on-Trent to "cool off".
It comes as there is a yellow warning of rain from Tuesday evening onwards, except in southern England. The Met Office has also warned of the risk of flash flooding.It comes as there is a yellow warning of rain from Tuesday evening onwards, except in southern England. The Met Office has also warned of the risk of flash flooding.
Track temperaturesTrack temperatures
Some rail companies announced train speeds had been reduced, over fears of hot rails buckling. Some rail companies announced train speeds had been reduced, because of fears of hot rails buckling.
Great Western Railway said there will be a series of changes to timetabled services because track temperatures expected to exceed 50C in parts of London later. Great Western Railway said there would be a series of changes to timetabled services because track temperatures were expected to exceed 50C in parts of London later.
The train operator said that many of its services would take 10-15 minutes longer because of the hot conditions.The train operator said that many of its services would take 10-15 minutes longer because of the hot conditions.
The high summer temperatures are being blamed for delays on First Transpennine's Express service between Hull and York.The high summer temperatures are being blamed for delays on First Transpennine's Express service between Hull and York.
The company says a rail buckled in the heat at Selby, North Yorkshire, and trains are currently delayed by up to 60 minutes. The company said a rail had buckled in the heat at Selby, North Yorkshire, and trains were currently delayed by up to 60 minutes.
The Met Office said at about 16:15 BST that 33.4C had been recorded in Pershore in Worcestershire. The Met Office said at about 16:15 BST that 33.5C had been recorded at RAF Brize Norton in Oxfordshire.
It became the hottest day of the year so far in the UK at about 11:30 BST, when 30.2C was recorded in London's St James' Park, and 30.1C was recorded at Charlwood in Surrey, Heathrow and Northolt in Greater London.It became the hottest day of the year so far in the UK at about 11:30 BST, when 30.2C was recorded in London's St James' Park, and 30.1C was recorded at Charlwood in Surrey, Heathrow and Northolt in Greater London.
On Twitter, #hottestdayoftheyear is trending.On Twitter, #hottestdayoftheyear is trending.
The highest reading recorded in the UK in July was 36.7C (98F) in 2015.The highest reading recorded in the UK in July was 36.7C (98F) in 2015.
Though many describe the current conditions as a heatwave, the Met Office says it uses the World Meteorological Organization definition - that the daily maximum temperature exceeds the average maximum temperature by 5C for five consecutive days.Though many describe the current conditions as a heatwave, the Met Office says it uses the World Meteorological Organization definition - that the daily maximum temperature exceeds the average maximum temperature by 5C for five consecutive days.
However, it has declared a level three heatwave alert, meaning there is a 90% probability of heatwave conditions until Thursday morning.However, it has declared a level three heatwave alert, meaning there is a 90% probability of heatwave conditions until Thursday morning.
London's ambulance service said it had had 300 more calls than usual and Public Health England is urging people to take care. London's ambulance service said it had received 300 more calls than usual and Public Health England is urging people to take care, with advice to drink plenty of water, and wear sunscreen and loose clothing.
St John Ambulance has also issued advice, urging people to be aware of headaches, dizziness and cramp, which can be signs of heat exhaustion and heat stroke.St John Ambulance has also issued advice, urging people to be aware of headaches, dizziness and cramp, which can be signs of heat exhaustion and heat stroke.
The RSPCA said it had also seen a spike in calls from members of the public concerned about dogs left in hot cars, conservatories, sheds and caravans.The RSPCA said it had also seen a spike in calls from members of the public concerned about dogs left in hot cars, conservatories, sheds and caravans.
Possible thunderstormsPossible thunderstorms
The hottest temperature ever recorded in the UK was 38.5C (101.3F) in Faversham, Kent, in August 2003.The hottest temperature ever recorded in the UK was 38.5C (101.3F) in Faversham, Kent, in August 2003.
But BBC Weather's Carol Kirkwood warned the high temperatures could spark isolated thunderstorms in Northern Ireland later, which will travel across north and west Wales, northern England and Scotland through the evening and overnight.But BBC Weather's Carol Kirkwood warned the high temperatures could spark isolated thunderstorms in Northern Ireland later, which will travel across north and west Wales, northern England and Scotland through the evening and overnight.
"Some of those could be torrential; we'll see a lot of rain in a short amount of time, lots of lightning flashes and big hail and gusty winds. It's going to be a humid night as well," she said."Some of those could be torrential; we'll see a lot of rain in a short amount of time, lots of lightning flashes and big hail and gusty winds. It's going to be a humid night as well," she said.
It comes as MPs have proposed employers should be legally forced to provide water, breaks or air conditioning to combat "uncomfortably high" temperatures.It comes as MPs have proposed employers should be legally forced to provide water, breaks or air conditioning to combat "uncomfortably high" temperatures.
There is no law for minimum or maximum working temperatures, but guidance suggests a minimum of 16C (61F), or 13C, if employees are doing physical work.There is no law for minimum or maximum working temperatures, but guidance suggests a minimum of 16C (61F), or 13C, if employees are doing physical work.
There is currently no guidance for maximum working temperature, but an early day motion tabled in the House of Commons called for a legal limit of 30C or 27C for those doing strenuous work.There is currently no guidance for maximum working temperature, but an early day motion tabled in the House of Commons called for a legal limit of 30C or 27C for those doing strenuous work.