"Marine flooding was reported in the marshes of Ré, Aix and Oléron islands, and in the cities of La Rochelle, Marennes, Arvert and Saint-Sornin29. A large ship collapsed into the lowlands situated at 3 m NGF (Nivellement général de la France) elevation, and nearly 30 ships sank. The losses in the salt marshes came to nearly “500,000 écus” (a French currency in the Middle-Ages) of salt lost. Inland, the Cathedral of Saintes was destroyed and the Notre Dame la Grande church of Poitiers was damaged. In Bordeaux and Le Mans, where the Sarthe River induced flooding because the heavy rain, two others churches were damaged. In Germond, many houses were destroyed. Presented in Athimon29, these impacts are extracted from the departmental archives of Charentes, Charentes-Maritimes, Gironde and Sarthe and historical local books37,38,39,40. This storm is qualified as a “disorder”, “horrible”, or “terrible” and much of the population hit by this event characterised it as “exceptional”29. Concerning the economic cost, it took three months for the Ré Island inhabitants to repair the damage, which impacted agricultural activities41. Overall, the spatial extent of this storm is considerable and includes much of the French Atlantic coast. An important concentration of storm impacts is identified between La Rochelle, Poitiers and Bordeaux. Bearing in mind the reports of wind destruction and river flooding in Le Mans, this event presents a SW–NE trajectory."

https://www.nature.com/articles/s41598-020-69069-w