Large parts of the UK remain on flood alert with more heavy downpours forecast as the Met Office issues a severe weather warning.
Storms that brought flash flooding to parts of Wales and Shropshire yesterday are moving into the South East today.
Some 20mm-40mm of rain is predicted to fall in the south Midlands across to East Anglia and there will be heavy downpours in many southern areas.
Up to 10mm of rain an hour fell in parts of Wales, the Midlands and East Anglia on Friday - prompting the Environment Agency (EA) to issue a number of fresh flood alerts.
At least 15 flood warnings are in place - five in the South West, seven in the Midlands and three in the Anglia region - with 57 flood alerts across England and Wales.
The alerts were mostly in the Midlands, South East and South West.
A warning means flooding is expected and immediate action is required, while an alert means floods are possible and people should be prepared.
The Met Office later increased its warning of rain to amber across parts of the South East, Midlands and East Anglia.
An EA spokesman said: "The Environment Agency is urging people across central and eastern England to remain vigilant as heavy thunderstorms are forecast to affect large swathes of the country.
"Locally intense showers falling on already saturated ground could lead to surface water flooding and possible river flooding from fast responding rivers, particularly across parts of the Midlands and East Anglia."
People are being urged not to drive or walk through flood waters which can be dirty, dangerous and full of hidden debris.
The wettest April to June on record, followed by more heavy rain so far this month, has caused widespread - and in some cases, repeated - flooding.
Sky's weather presenter Isobel Lang said: "Today we will see 20mm-40mm in the south Midlands across to East Anglia.
"There will also be some heavy slow moving downpours across most southern areas as well and in Dorset across to Kent.
"This July has been exceptionally wet so with the saturated high river levels, it doesn't take much rain to bring flash flooding.
"The heavy showers should ease away from southeast England by late evening leaving much of southern Britain drier and clearer.
"On St Swithin's day, there will be a window of brighter weather although I don't think there will be 40 days of fine weather to follow.
"But there are signs of more settled and more sunnier weather over the next week or two as we head towards the Olympics.
"The Olympic torch heads to London at the end of the coming week and it may look better then."