The warning is so healthcare professionals can prepare.
There is a 90% probability of heatwave conditions over the weekend in the South West. We are currently on a level 3 (of 4) warning.
The very warm, locally hot, conditions are set to continue - the highest temperatures are likely to occur on Sunday in parts of southern, central, and western England.
The Heat Health Watch Service is designed to help healthcare professionals manage periods of extreme temperature.
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