A heat-health alert issued by the Met Office and UK Health Security Agency for Suffolk has been upgraded.
The authorities issued the first yellow alert of the year on Wednesday, with temperatures set to reach highs of 28 degrees in part of the county over the weekend.
Five regions have been placed under the new amber alert, including Suffolk and the East of England.
A spokesperson for the UK Health Security Agency said: "An amber alert indicates that weather impacts are likely to be felt across the whole health service, and at this level we may begin to see some health impacts across the wider population, not just the most vulnerable."
The alert is in place from 9am on Friday, June 9 to 9am on Monday, June 12.
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