Europe: Adverse weather forecast across northern Spain, southern France, northern Italy, and Switzerland through early June 10

Officials have issued thunderstorm and/or rain warnings for northern Spain, southern France, Switzerland, and northern Italy through early June 10. Orange warnings (second highest) are in place for the following regions:

• France: Haute-Loire, Ardeche, Isere, Drome, Vaucluse, and Gard.

• Italy: Most of northern Italy.

• Spain: Centro de Huesca, Cinco Villas de Zaragoza, and Depresion central de Barcelona.

• Switzerland: Most of the country, except parts of the southeast.

Yellow warnings (third highest) are in place across the rest of the region. As weather conditions change over the coming days, authorities will likely issue new alerts or update/rescind existing advisories.

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. 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, 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 are possible 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.