Up to 40mm of rain could fall in higher ground with wind gusts of up to 70mph are expected on south coast
New photos taken by the Environment Agency show the scale of the flooding in the Arun valley south of Pulborough.
A search has been launched for a man who is believed to have gone missing in Dorset without wearing any clothes.
Sussex Police say missing teenager Chloe Hammond, who had last been seen at home on Saturday morning, has been found safe and unharmed in Crawley.
Fears had been sparked after the 16 year old disappeared
Police are thanking local people and the media for helping to find her safely.
Fire crews spent several hours trying to contain the blaze, which broke out at St Andrews Church in Timsbury at 7.30 this morning.
Six crews managed to bring the fire under control and save as many historic artefacts as possible including a stained glass window. Half of the roof was damaged.
Firefighters used four breathing apparatus, three jets and hose reels to put the fire out.Crews remain on scene for the next few hours and are working with the church to salvage as much as possible.The cause of the fire is unknown at this time and there is a fire investigation on going.
A series of cliff collapses at Birling Gap in East Sussex has prompted a warning to visitors to keep away from the edge.
More tourists are expected this weekend because of the warm weather and the hope of seeing further erosion.
On Tuesday, the high tide caused a severe fall in the cliffs after a 30ft crack appeared, with a row of cottages ending up closer to the edge.
The cliffs have suffered seven years' worth of erosion, since January.
As Andrea Thomas's report from earlier this week shows, it's a magnet for sightseers.
A plan's been unveiled to open a huge model railway museum in Ashford. Enthusiasts want to raise a million pounds to buy a plot of land next to the International station, and almost two million more to build the exhibition itself. David Johns reports.
The Jurassic Coast in Dorset has been battered by storms over recent weeks, which has exposed a number of new fossils. But paleontologists say they've seen people with sledge-hammers smashing rocks - destroying fossils they didn't recognise. Duncan Sleightholme has more.
Firefighters have managed to save a medieval Hampshire church after fire broke out.
Dozens of firefighters fought the flames at St Andrew's in Timsbury near Romsey early this morning.
The blaze ripped into the roof and bell tower but swift action saved around half of the roof of the Norman church.
The alarm was raised at about 7.30am and crews with six pumps took an hour to put out the flames.
The cause of the blaze was unclear and will be investigated. No one was hurt.