Flooding from summer storms that brought parts of Britain to a halt over the weekend is gradually subsiding and forecasters say much of the country will enjoy dry weather on Monday and over the coming week. 

• Lightning strikes the UK - in pictures

Lightning illuminates Brighton pier, East Sussex. Photo: Max Langran/Apex

Prince William and Prince Harry join flood relief effort

Princes William and Harry on Friday went on a private mission to help the flood response, working to lug sandbags in Datchet.

The Guardian came across the pair by the railway crossing in the flood-hit Berkshire village where they were quietly working with a team of 20 members of the Household Cavalry and Network Rail staff to load dozens of sandbags on to a railway truck. Watch the video

US east coast weather is generally awful – in pictures

As a wave of snow, ice and sleet sweeps eastward, Americans from Texas through Georgia and New York are struggling with the freezing deluge. See more

Photos, top to bottom: (1) Miaden Antonov/AFP/Getty Images; (2) Matt Rourke/AP; (3) Zhang Jun/Xinhua Press/Corbis

Winter storm blamed for nine deaths as snow system moves up east coast

The second wintry storm in two weeks to hit the US south brought treacherous conditions to highways, forced thousands of flight cancellations and knocked out electricity to nearly a half-million homes and businesses.

At least nine traffic deaths across the region were blamed on the weather, including three people who were killed when an ambulance careened off an icy west Texas road and caught fire. Nearly 3,300 airline flights nationwide were cancelled.

Forecasters warned of a potentially “catastrophic” storm across the south with more than an inch of ice possible in places. Read more

Photograph: Hal Yeagar/AP

UK storms: Met office issues red warning for damaging winds – live updates

Satellite images showed three storms sweeping across the Atlantic towards Britain as hurricane force winds are predicted in four shipping areas. The Met OFfice has warned of destructive 100mph winds, issuing a rare “red warning”. Live updates 

Image: Atlas Photo Archive/NASA

The coldest city in the world - in pictures 

While the US recovers from the recent polar vortex, in the city of Yakutsk, locals continue daily life in -45C (-49F). Located on the permanently frozen tundra of Russia’s far east, Yakutsk is generally considered the coldest city in the world. Photographs: Amos Chapple

Winter storm blasts north-east US with snow and freezing temperatures – live coverage 

American mid-west gripped by deep freeze as government offices shut down in Washington ahead of expected snowfall. Live coverage 

Pictured: Snow at Niagara Falls earlier this month. Photograph: Dan Cappellazzo/Barcroft USA

Extreme UK weather - live coverage. Over 100 flood warnings are in place as winter storms continue in the UK. Click here to follow developments

Enormous waves in Saltdean, East Sussex. Photograph: Yosserian/GuardianWitness. Submit your photos of the weather to GuardianWitness - but please stay safe.

Weekend readers’ best photographs

From umbrellas to clouds: your best pictures on this week’s theme, April showers

Photo: 'It's London. April showers occur all through the year…' Credit: Rod Olukoya