Rain from the succession of two storms, Evan Friday and Herminie, led to flooding in northwest France on Sunday. Even the city of Rennes has suffered its worst flooding in 40 years and there will be a new major threat in the coming days.
After a year already very wet in 2024, Brittany has had unusual rainfall totals over the past six days, from January 21 to January 27:
- Plaquedioc (Morbehan): 112 mm, or 103% quality;
- Herbengak (Lower-Atlantic): 104.1 mm, or 105% of standard;
- Sergio (Morbihan): 100.6 mm or 127%.
The city of Rennes broke its rainfall record for a January month with 171 mm (compared to 169.6 mm in 1995) during the month.
Matteo France clarified that it was Sunday ” More than 10 mm with the seventh day of this month rainrain Collected at Ille-at-vilaine, which had been reached in January only twice since 1959 (seven days in January 1995 and seven days in January 2001). ».
New terrible floods in coming days
The Weijkraus organization put the LEEET-Villain on red alert this Monday morning, with cuttlefish (more than in 1966) and walleye medians (more than the historic flood of January 1995 and more than the historic flood of 2001). is due to flooding higher than the 2001 historical flood and may reach the 2001 flood level).
With the rains continuing this Monday, the flood-increasing phase will continue through Tuesday.
Vejekros has made it clear that these rivers are characterized by very slow decline.
Circulating showers this Monday and Tuesday won’t help the fall, but Wednesday will create a new major threat. A new very active disturbance will move through north-west France, bringing an extra 15 to 30mm of rain. In this context, it is almost certain that new floods will occur in vulnerable areas.