Overview

• The alert runs from 00:00 to 14:00 on Wednesday for South West England, much of South Wales, and London & the South East.
• Forecasts call for widespread 20–30mm with isolated 40–60mm in 6–9 hours, plus heavy showers, thunderstorms and coastal gales.
• Travel disruption is likely with spray and surface water on roads, longer bus and rail journeys, and a small chance of short power interruptions.
• The Environment Agency has flood alerts in Devon, including the River Axe area and for the Plym and Tory Brook, with staff monitoring river levels.
• Authorities advise residents to check property flood risk, prepare a flood plan and an emergency kit, and follow updated warnings through the day.