“Between All Saints’ Day and Advent, expect rain and wind! » Rarely has a saying been verified as accurately as this fall in France. Météo-France has never measured such a high cumulative average precipitation over a period of twenty-six days: 215.4 millimeters between October 18 and November 12, beating a previous thirty-year-old record (196.9 mm). between September 21 and October 16, 1993).
The trend continued in the following days: the average precipitation recorded for the month of November (101.50 mm) was already exceeded halfway through the month, with 107.43 mm between the 1er and November 15.
If we consider the cumulative rainfall since the beginning of the year, the excess measured on November 15 is “only” 85 mm (i.e. + 12%), according to data from Infoclimat.fr, because France experienced a significant deficit in precipitation in the first half of the year. The amount of rain that fell caused the indicators to go from deficit to surplus. But beyond a certain level of precipitation, when the soils and watercourses are saturated, they can no longer absorb more: the risk of flooding is at its highest, as in current Pas-de-Calais. november.
Gn Fr France