Watch as flood siren sounds in the Calder Valley with 'immediate action required' by residents

Heavy rainfall throughout the day means that some areas of Todmorden are at risk of flooding, the flood service said.

Video supplied to the Halifax Courier's sister newspaper the Yorkshire Evening Post shows the moment the flood siren was sounded.

The resident - who wished to remain anonymous - said the noise was shocking and sounded 'ominous'.

River levels are expected to peak in the next hour (between 20:00 and 21:00) after which they are expected to fall.

The flood service said: "If you are resident in the flood area and have a flood plan, please action it now.

"We are continually monitoring the situation and will provide you with updates as the situation changes.

"Please stay safe and keep away from fast-moving water."

Walsden Water at Walsden is most likely to be affected by flooding according to the warning.

River levels have also risen in the Calder Catchment as a result of the heavy rainfall from Storm Francis, the flood service said.

Consequently, flooding of roads and low-lying land is possible between 5pm tonight and 4am tomorrow morning.

Further rainfall is expected until the early hours of tomorrow according to the service.

The warning said: "We expect river levels to remain high until 09:00 on 26/08/20.

"We are closely monitoring the situation.

"Our incident response staff are checking defences.

"Please avoid using low lying footpaths near local watercourses."

The warning comes as a similar message was issued for Bridlington seafront.

Overtopping waves may cause flooding on the seafront and nearby areas.