The Met Office has issued a yellow weather warning for the risk of thundery downpours returning to the Anglia region from Wednesday through to Friday.
Many places will miss the showers but some areas could suffer torrential downpours.
The Met Office warning is in force from 6pm on Wednesday 22 June until 6am on Friday 24 June 2016
The Met Office says although some areas will miss them, potentially intense thundery downpours seem likely to affect parts of the warning area from Wednesday late afternoon or early evening onwards into the early hours of Thursday or Thursday morning.
Further scattered thunderstorms are then likely to break out from Thursday afternoon onwards into Thursday night.
The Met Office is warning people to be aware of possible disruption to travel and localised flooding as well as frequent lightning.
"Increasingly warm and humid air arriving from France later on Wednesday brings with it a risk of thunderstorms.
"These thunderstorms are likely to occur in a couple of main waves, from Wednesday late afternoon or early evening into early Thursday and a second wave breaking out later on Thursday.
"Where thunderstorms occur torrential rain and frequent lightning are expected, as well as a chance of some hail. 30 mm or more of rain could fall in an hour and locally in excess of 50 mm is possible in two or three hours.
The Met Office rainfall forecast computer animation shows where the heaviest rain is predicted to fall
The Met Office says that the northwestward extent of these thunderstorms remains a little uncertain and parts of southeastern England are considered most likely to be affected.
With this in mind an amber warning has been issued for this area from Wednesday evening through until early Thursday.
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For the fifth consecutive day there is a Met Office yellow weather warning in force for heavy and potentially thundery showers across the East of England.
There is also a further warning in place for Thursday
The weather warning covering the Anglia region is in force from 10am and 9pm on Wednesday 15 June 2016
The Met Office says scattered heavy, thundery showers are expected to develop yet again on Wednesday, and will lead to slow-moving downpours.
The weather forecaster says: "As on preceding days, some locations will miss these downpours, but please be aware of possible localised flooding and disruption to travel where they do occur."
"Rising temperatures will trigger slow-moving heavy showers and thunderstorms.
"Once again, 15-25 mm are likely to fall within an hour in scattered locations, bringing the risk of flooding, especially if across urban areas."
A similar weather warning has also been issued for Thursday valid from 10am until 10pm.
The Met Office has issued a yellow weather warning for the risk of heavy and thundery downpours in the Anglia region on Saturday afternoon.
The weather warning is in force from 11am until 8pm on Saturday 11 June 2016
The Met Office says scattered, heavy downpours will develop today across England and Wales, turning thundery in places.
It says that although many places will miss the worst, (some even staying dry) there is the risk of localised surface water flooding and disruption to travel.
"A moist, unstable air mass across most of England and Wales will again lead to the development of some heavy showers and localised thunderstorms.
"15-25 mm of rain could fall locally within an hour, with 30 to 40 mm possible within 3 or 4 hours.
"These amounts could generate some surface water flooding, especially if they affect urban areas."
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The Met Office has issued a yellow weather warning for heavy rain in parts of Suffolk and Essex.
It's valid until 5pm on Bank Holiday Monday.
The Met Offices says further areas of heavy rain or thundery showers are likely to affect parts of southeastern England and East Anglia at times on Bank Holiday Monday.
The main risk periods would seem to be before dawn and again during the middle of the day and into the afternoon. The evening should see a slow transition to drier conditions from the west.
"Parts of East Anglia and southeast England will still be affected by a warm, humid and unstable airmass during much of Monday, which leaves the opportunity for thundery downpours to spread from Northern France.
As in many such cases, only a minority of places will see the heaviest rain, but there is a chance that some locations could see 20 to 25 mm of rain in an hour and perhaps 40 mm in a few hours."