Italy: Adverse weather forecast nationwide through at least June 6

Event

Heavy rainfall and thunderstorms are forecast across much of northern and central Italy through at least June 6. Strong wind gusts, lightning, and possible hail may accompany storms. The affected area includes parts of the Emilia-Romagna Region that were impacted by heavy flooding in recent weeks, resulting in at least 15 fatalities and the evacuation of tens of thousands of people from their homes. Heavy downpours could trigger flooding in low-lying areas, especially in areas where the ground is already saturated by previous rainfall, as well as landslides on unstable slopes. Strong winds may lead to power outages and property damage in affected areas.

As of early June 5, officials have issued the following weather warnings across the country:

• Orange thunderstorm warnings (the middle level on a three-tier scale): Emilia-Romagna, Lombardy, Trentino-Alto Adige, and Veneto regions

• Yellow heavy rainfall and thunderstorm warnings: the rest of the affected area

Officials could update and extend the coverage of weather alerts over the coming days.

Hazardous Conditions
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 rainfall 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.

Transport
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. The disruptive weather may cause some delays and cancelations 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.

Advice

Monitor local media for weather updates and related advisories. Confirm all transport reservations and business appointments before travel. Make allowances for localized travel delays and potential supply chain disruptions where flooding is forecast. Do not drive on flooded roads. Charge battery-powered devices in the case of prolonged electricity outages.

Resources

MeteoAlarm
Servizio Meteorologico Aeronautica Militare (Italian)