Risk of floods and strong waves: eight departments on orange alert this weekend

Eight departments were on orange alert this weekend.” placed on orange flood or wave-submersion alert between the evening of Friday October 27 and the day of Saturday October 28. The alert mainly concerns the west of France.

An "strong wave episode" which occurs "in a context of high tides" hits France this Friday, October 27 until Saturday, October 28, 2023. A good part of the western departments of France are affected. Météo-France also predicts overflows " the open sea in the evening on the estuaries placed on orange alert. The orange alert for floods and waves-submersion specifically concerns eight departments, across the country. namely: Finistère, Charente-Maritime, Gironde, Landes and Pyrénées-Atlantiques on orange flood alert until December 2019. Saturday at midnight, and Morbihan, Loire-Atlantique and Vendée placed on wave-submersion alert, with Finistère and Charente-Maritime also. Alert which begins at midnight this Friday evening and should last 24 hours.

In its bulletin, the weather forecast service highlights guard over "rain-stormy passages" which may be accompanied by "locally strong gusts of wind". Météo France indicates that this episode occurs in a context of high tides "with a tidal coefficient of 103 for high tide on Saturday afternoon". On Saturday October 28, a rise in sea level is then strongly expected and it could cause “submersions by crossing sea waves or overflows, at the time of high tide”. The meteorological service indicates that these atmospheric conditions could spread “up to” east of the Channel on Saturday, still on yellow alert this Friday.