Scorched fields at St Nicholas Park in Warwick as the fourth heatwave of the summer loomsHeat health alerts have been upgraded to amber in some areas of England as the fourth heatwave of the year looms and parts of the country struggle with persistent dry weather. It is the fourth time this summer that temperatures have soared to heatwave levels, with record-breaking temperatures for the month in both May and June and another significant hot spell in mid-July. But mainly places missed out and stayed largely dry, the Met Office said, with little, if any, relief in some southern regions,. The UK Health Security Agency (UKHSA) warned that the rising temperatures may increase health risks, particularly for vulnerable groups. The UKHSA said: “The existing yellow heat-health alert for the East Midlands, East of England, South East and London has been upgraded to amber and will be in place from 9am on Tuesday 28 July until 9am on Thursday 30 July.