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Flood sirens to be tested in Grimsby and Cleethorpes

The Environment Agency will carry out its annual testing of the flood warning sirens in Grimsby and Cleethorpes on Friday 30 August.


There are 18 flood warning sirens to warn residents of tidal flooding from the Humber. The siren on the Willows Estate in Grimsby is also used to warn residents of flooding from the River Freshney.

All the tests will be carried out between 10am and noon. Each cluster of sirens will be sounded 3 times and will last between two and five minutes.

Environment Agency staff will be in Freshney Place shopping centre on Thursday 29 and Friday 30 August between 9am and 5pm to answer questions about the sirens and flooding in general. Information will be available on how to prepare for and respond to a flood and what to do when a siren is heard.

Claire Rose, flood resilience team leader, said: “Our flood defences reduce the risk of flooding to thousands of homes and businesses in Grimsby and Cleethorpes but there is always a risk that they can fail or be overwhelmed.

“It is important that people know what to do before, during and after a flood and identify the actions they can take to protect themselves and their property.

“We would love people to come and see us in Freshney Place to learn more about flood risk and what they can do to help themselves.

“We would like to apologise for any disturbance the testing may cause, but needs to carry out the test to ensure the sirens work in an emergency.”

There will be a voice message advising that a test is being carried out. This will be followed by a voice message giving a Severe Flood Warning message and a wail followed by a further voice message confirming that this is a test.

People who hear the sirens during this time should take no action. In the unlikely event that a real flood emergency occurs during testing, loudhailers and local radio will be used to issue flood warnings.

Grimsby’s 18 sirens were installed in 2006 to warn more than 25,000 households and businesses about impending tidal flooding. The siren on the Willows estate was adapted after the floods of 2007 so that the Environment Agency could use it to warn people about flooding from the River Freshney.

For more information, call Floodline on 0845 988 1188 or visit


The 18 sirens are located at:

Blundell Park (Grimsby Town FC)
Freshney Place shopping centre
Nelson House
People’s Park
Grant Thorold Park
Sidney Park
Allotments adjacent to Kelham Road and Algernon Street
WIllows Primary School
Littlecoats Primary School
South Parade Junior School
Waterworks Cottage Lane
Edward Heneage Primary School
Reynolds Junior School
Old Clee Junior School
Cromwell Road/Boulevard Avenue
Park Street
Augusta Close

In the event of a flood during the testing period, the current voice messaging system (Floodline Warnings Direct) will still be used to warn businesses, while local radio, loudhailer units and mobile sirens will be used to inform residents.