Italy: Adverse weather forecast across southern regions through at least Nov. 14

Severe weather is forecast across parts of southern Italy through at least Nov. 14. Heavy rainfall and thunderstorms are forecast across the region Nov. 12-13 before conditions gradually begin to improve in Sardinia from the afternoon Nov. 13 and across the rest of the affected area from Nov. 14. Strong winds, lightning, and hail may accompany storms. Heavy downpours may trigger flooding in low-lying areas and landslides on unstable slopes. Strong winds could cause property damage and power outages.

Authorities have issued the following weather warnings across the affected area Nov. 12-14:

Nov. 12

• Orange heavy rainfall warnings (the middle level on a three-tier scale): Sardinia and Sicily regions.

• Orange thunderstorm warnings: Sicily Region.

• Yellow heavy rainfall and strong wind warnings: Calabria and Campania regions.

• Yellow thunderstorm warnings: Calabria, Campania, and Sardinia regions.

Nov. 13

• Orange heavy rainfall and thunderstorm warnings: Sicily Region.

• Yellow heavy rainfall and thunderstorm warnings: Calabria, Campania, and Puglia regions.

Nov. 14

• Yellow heavy rainfall and thunderstorm warnings: Calabria and Puglia regions.

Officials will likely update and extend the coverage of weather alerts over the coming hours and 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 stormwater drainage systems. Sites 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. Disruptions to electricity and telecommunications services are possible where significant flooding or landslides impact utility networks.

Floodwaters and debris flows may render some bridges, rail networks, 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. Disruptive weather may cause delays and cancellations at airports in the affected regions. Flooding could block regional rail lines; freight cancellations are possible in areas with heavy rainfall and potential track blockages.

Localized business disruptions may occur in areas impacted by severe weather; some businesses might not operate at full capacity because of damage to facilities, possible evacuations, and some employees' inability to reach work sites.