France: Adverse weather forecast across central and southern regions through at least Oct. 27

Severe weather is forecast across parts of central and southern France through at least Oct. 27. Thunderstorms and heavy rainfall are expected across the region, with the most intense storms likely in southeastern coastal areas. Rainfall totals of 12-15 cm (5-6 inches) with localized heavier amounts are possible in far southeastern regions through Oct. 27. Strong wind gusts, lightning, and hail may accompany storms. Heavy downpours may trigger flooding in low-lying areas and landslides on unstable slopes.

As of Oct. 25 Meteo France has issued the following weather warnings across the affected area:

• Orange rain-flood warnings (the middle level on a three-tier scale): Gard and Var departments.

• Yellow rain-flood warnings: Alpes-Maritimes, Ardeche, Cher, Dordogne, Haute-Vienne, Hautes-Pyrenees, Herault, Indre, Indre-et-Loire, Loir-et-Cher, Loiret, Lozere, and Pyrenees-Atalntiques departments.

• Yellow thunderstorm warnings: Across much of the affected area

Further orange and yellow rain-flood and yellow thunderstorm warnings are in place over parts of the affected area Oct. 26. Officials will likely update and extend the coverage of weather alerts over the coming days.

Sustained heavy rainfall could trigger flooding in low-lying communities near rivers, streams, and creeks. Urban flooding is also possible in developed areas with easily overwhelmed or a lack of stormwater drainage systems. Sites located downstream from large reservoirs or rivers may be subject to flash flooding after relatively short periods of intense rainfall. Landslides are possible in hilly or mountainous areas, especially where heavy rain has saturated the soil.

Authorities could issue mandatory evacuation orders for flood-prone communities over the coming days. Where significant flooding, landslides, or strong winds impact utility networks, disruptions to electricity and telecommunications services are possible.

Floodwaters and debris flows may render some bridges or roadways impassable, impacting overland travel in and around affected areas. Ponding on road surfaces could cause hazardous driving conditions on regional highways. Authorities could temporarily close some low-lying routes that become inundated by floodwaters. Severe weather could also trigger flight delays and cancellations at airports across the affected region.

Localized business disruptions may occur in low-lying areas; some businesses might not operate at full capacity because of flood damage to facilities and some employees' inability to reach work sites.