‌One firefighters' union leader has even declared a wildfire "national emergency" for the UK, while the Met Office has announced that Britain is on course for the hottest summer ever recorded. Or, in plain English, temperatures may reach 33C on Wednesday before soaring to a scorching high of 38C on Thursday, as per the Met Office. ‌The UK Health Security Agency ( UKHSA ) has also issued its own batch of amber heat health alerts, but with warnings in place for all regions throughout the UK. Article continues belowFlash drought is a phenomenon which develops rapidly due to a combination of extremely low rainfall and high temperatures. "Extreme heat can be dangerous, so staying aware of warnings and alerts in place can make a real difference."