Fortunately, the intense rainfall is anticipated to ease this evening.
Britain’s official weather authority issued the alert earlier today, taking effect from 12:52pm this afternoon.
The warning arrives with explicit guidance from the Met Office about preparing for potentially dangerous weather.
Those impacted by the alert should “consider preparing a flood plan and an emergency flood kit”, officials stated.
Crucial items include “torches and batteries, [and] a mobile phone power pack”.
Across England, residents can verify whether their property faces flash flooding risks by accessing the Government’s online portal.
To create a proper flood strategy, households should compile a record of important telephone numbers including local authorities, insurance firms and utility companies. Residents can also relocate their valuables to safety, discover how to turn off their electricity or gas supplies and think about assisting vulnerable friends or neighbours.
Emergency flood kits might contain: insurance paperwork and contact number lists; torch with extra batteries; first aid supplies and any prescribed medication; warm waterproof clothing and blankets; bottled water and snacks; battery or wind-up radio; essentials for caring for your baby or pet.
For Wednesday, the Met Office said downpours will gradually diminish with a few “continuing across East Anglia and southwest England”.
Elsewhere, “a mix of cloud and clear spells” is forecast with ” perhaps some patchy drizzle in northwest Scotland”.
On Thursday, Brits can anticipate “rain and showers developing across eastern England” but staying largely dry elsewhere.
The most pleasant conditions will be in the west.