UK: Heavy rainfall forecast across parts of England, Northern Ireland, and Wales through Sept. 27

Heavy rainfall is forecast across much of England, eastern parts of Northern Ireland, and the southern half of Wales through at least Sept. 27. Slow-moving showers and storms are forecast to intensify through Sept. 26 and merge into a large band of heavy rain. The heaviest rainfall is expected in central England, with rainfall amounts of between 3-4 cm (1.2-1.6 inches) in three hours or 5-6 cm (2-2.4 inches) in six hours possible in the region. Heavy downpours will likely cause flooding and associated disruptions in affected areas. Parts of central England are still recovering from flooding following heavy rainfall Sept. 22-23, and the additional rainfall over already saturated ground will exacerbate the situation in affected areas.

As of Sept. 26, 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 central England late Sept. 26-early Sept. 27.

• Yellow heavy rainfall warnings: Much of southern, central, and eastern England and the southern half of Wales Sept. 26-early Sept. 27, much of northeastern England Sept. 26, and eastern parts of Northern Ireland Sept. 26

Dozens of flood warnings and alerts have been issued by the Environment Agency across parts of England as of Sept. 26. 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.