UK: Severe weather forecast across much of the country through at least May 23

Severe weather is forecast across much of the UK through at least May 23. An area of low pressure will approach the UK from the southern North Sea and is forecast to push a band of heavy rainfall northward and westward across the country over the coming days. Widespread rainfall totals of 3-4 cm (1.2-1.6 inches) are expected, with localized heavier amounts, especially in elevated areas. The heaviest rainfall is expected over parts of northwestern England and northern Wales. Thunderstorms are also expected across southern coastal regions. Heavy downpours may cause flooding and associated disruptions in affected areas.

As of early May 22, the UK Met Office has issued the following weather warnings across the country:

• Amber heavy rainfall warnings (the middle level on a three-tier scale): Parts of northwestern England and northern Wales 12:00 May 22-12:00 May 23.

• Yellow heavy rainfall warnings: Much of central and northern England early May 22-12:00 May 23, much of central, eastern, and southern Scotland 12:00 May 22-18:00 May 23, and northeastern Northern Ireland 17:00 May 22-10:00 May 23.

• Yellow thunderstorm warnings: Southern coastal areas of England 08:00-19:00 May 22.

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

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. 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.

The severe weather will likely contribute to transport disruptions throughout the region. Traffic and commercial trucking delays might occur along regional highways. Flooding downpours could inundate some low-lying roads in areas with poor drainage. Strong winds might also pose a hazard to high-profile vehicles. Hazardous weather conditions might cause flight delays and cancellations at airports across the affected area.

Disruptions triggered by inclement weather and resultant hazards, such as flooding, could persist well after conditions have improved - it could take days before floodwaters recede and/or officials clear debris. If there is severe damage to infrastructure, repair or reconstruction efforts may result in residual disruptions.