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Flood alert for whole of the south Cornwall coast

Flood alert for whole of the south Cornwall coast

Published by Emma Carton at 7:04am 26th November 2019. (Updated at 12:33pm 26th November 2019)

Archive photo of storm waves in Penzance

Flood alerts - issued for the Cornish coast as ex-Storm Sebastien hits - have now been upgraded to warnings: Read more.

The whole of the south Cornwall coast is on flood watch, as ex-Storm Sebastien looms.

Alerts have been issued from Land's End to Rame Head and Plymouth.

The Environment Agency says there is a chance those could be upgraded to warnings too.

It comes alongside a two-day severe weather warning for torrential rain, with the risk of gales.

The St Mawes passenger ferry has already cancelled all sailings for Tuesday, because of the wild weather.

You can check the latest traffic and travel information for Cornwall here or scroll down for the full forecast.

What flood warnings are in force?

The Environment Agency has issued the following flood alerts for the south Cornwall coast:

Land's End to Lizard Point: Locations that could be at risk include Mousehole, Newlyn, Penzance, Longrock, Marazion, and Praa Sands.

Lizard Point to Gribbin Head: Locations particularly at risk include Commercial Road Penryn, Trefusis Road Flushing, the A39 at Perranarworthal and the A390 at Tresillian.

Gribbin Head to Rame Head: Locations that could be at risk include Fowey, Golant, Lostwithiel, Lerryn, Polruan, Polperro, Looe and the Looe Rivers and Seaton.

Rame Head to Plymouth: Locations that could be at risk include Kingsand, Cawsand, Cremyll, Torpoint, Saltash, tidal rivers Tamar and Plym excluding Plymouth Barbican.

Officials say strong winds, coupled with super high tides, could whip up huge waves and trigger flooding.

"Flooding is possible over the high tides, from Monday evening on the 25th of November through to and including Thursday morning's high tide. 

"Times of high water will vary along the coast. Tide levels are now rising towards spring tides which peak on Wednesday. 

"High tide levels, along with strong winds generating large waves and some surge may be enough to cause some localised coastal flooding. 

"The current forecast conditions, associated with ex-storm Sebastian, could require flood warnings to be issued for Tuesday evening and Wednesday morning's high tide. 

"People are advised to stay away from risk areas and take care next to the coast.

Environment Agency

A separate alert remains in force for the West Cornwall Rivers.

You can check the latest flood warnings for Cornwall here or watch how to be prepared...

What can we expect and what is the full weather forecast?

The Met Office yellow warning for torrential rain will be in force from 6am on Tuesday until 3pm on Wednesday afternoon.

Up to 40mm could fall, especially on higher ground, sparking the risk of flooding in areas already saturated by recent downpours.

"A broad area of heavy rain is expected to move northeastwards across this region during Tuesday. 

"Heavy showers then follow, these probably heaviest and most numerous on and near coastal areas, especially in Wales and south-west England. 

"Conditions also quite windy at times, especially in coastal areas where gales are likely. 

"The combination of rain and subsequent showers likely leads to 10-20mm of rain quite widely whilst over high ground and in locations where showers are particularly frequent 20-40mm may build up in a few places. 

"Given already saturated ground following recent rainfall this brings the chance of further flooding and travel disruption".

Met Office

You can check the latest weather warnings for Cornwall here or watch how to be prepared...

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