An Atlantic low will bring large waves on Monday with flood warnings in place at high tide times. Large swell for W.Ireland and also Cornwall, Devon and Pembrokeshire
The deep area of low pressure winding in from the Atlantic, towards Ireland and then Scotland will bring gales in the NW Monday night but also large swell for western Ireland and also reach SW Britain.
The chart from magicseaweed shows the large swell forecast for tonight
The Environment Agency have issued Flood warnings for parts of western Britain due to the heights of the tides on Monday 3rd August with this extra push of water from the Atlantic. They warn of tidal spray and that onshore flooding may occur to roads and some properties along the coast may be affected. People are warned to stay away from the coast. The warnings page is a new service (in Beta test) so do feed back if you have any issues using it. https://flood-warning-information.service.gov.uk/warnings#details-116852
