The Met Office has issued a Level 3 Heat Warning for London and South East.
Met Office Heat Warning
Issued at: 0855 on Thu 18 Jul 2013
There is a 90 % probability of heatwave conditions between 0900 on Thursday and 2100 on Friday in parts of England.
Southwest England and the West Midlands have been elevated from level 2 to level 3. Southeast England and London remain at level 3. The East Midlands, Yorkshire and the Humber and East of England remain at level 2. North East England and North West England remain at level 1.
An update will be issued when the alert level changes in any region. Alerts are issued once a day by 0900 if required and are not subject to amendment in between standard issue times. Note that the details of the forecast weather are valid at the time of issue but may change over the period that an alert remains in force. These details will not be updated here unless the alert level also changes, the latest forecast details can be obtained at the following link: http://www.metoffice.gov.uk/public/weather/forecast/#?tab=map