The Met Office has issued a yellow weather warning for the risk of isolated thunderstorms on Tuesday afternoon into the evening.
The Met Office says most places will stay dry, but heavy showers and thunderstorms may cause some flooding and disruption to travel.
Temperatures will again soar into the low 30sC in the Anglia region on Tuesday after the hottest August Bank Holiday on record.
The weather warning is in force from noon until midnight on Tuesday 27 August 2019
"Although some places will miss them, heavy showers and thunderstorms will break out in some areas this afternoon. "Where thunderstorms do occur, torrential rain and frequent lightning is expected as well as a chance of gusty winds and hail here and there. "A few spots could see as much as 30 mm rain in an hour and 40 to 60 mm rain in two or three hours."
What to expect
There is a small chance that homes and businesses could be flooded quickly, with damage to some buildings from floodwater, lightning strikes, hail or strong winds
There is a small chance of fast flowing or deep floodwater causing danger to life and there is a small chance that some communities become cut off by flooded roads
Where flooding or lightning strikes occur, there is a chance of delays and some cancellations to train and bus services
There is a slight chance that power cuts could occur and other services to some homes and businesses could be lost
Spray and sudden flooding could lead to difficult driving conditions and some road closures