18/04/2025 – Weather in Cornwall – Yellow Weather Warning For Rain

Published On: 18 April 2025Last Updated: 18 April 2025By CornishStuff

Met Office Warning: Hours of Heavy Rain and Travel Disruption Set to Hit Tonight

Persistent Rain and Flood Risk Expected Across the Region

A Yellow Weather Warning for Rain has been issued by the Met Office from 6pm today (Friday 18th April) until 9am on Saturday 19th April, warning of prolonged rainfall that could cause flooding and significant disruption to travel.

The warning covers a wide area and highlights persistent and heavy rain, especially across higher ground such as Dartmoor, where up to 75mm is expected to fall by Saturday morning.

What to Expect

According to the Met Office, the following impacts are likely during the warning period:

Flooding of a few homes and businesses is possible
Bus and train services probably affected, with journey times taking longer
Spray and flooding on roads likely to make journeys more difficult
Some power supply interruptions and disruption to other services also possible

When and Where

Rain will develop early Friday, becoming heavier and more persistent as the evening progresses. The worst of the weather is forecast overnight, with rainfall easing by late Saturday morning.

Widespread accumulations of 20 to 40mm are expected across the region, with 50 to 75mm likely over higher ground.

Conditions will also be quite windy, adding to the challenge for road users and transport services.

What Should You Do?

The Met Office has issued the following guidance:

“Check if your property could be at risk of flooding. If so, consider preparing a flood plan and an emergency flood kit.”

“Give yourself the best chance of avoiding delays by checking road conditions if driving, or bus and train timetables, amending your travel plans if necessary.”

“People cope better with power cuts when they have prepared for them in advance. It’s easy to do; consider gathering torches and batteries, a mobile phone power pack and other essential items.”

“Be prepared for weather warnings to change quickly: when a weather warning is issued, the Met Office recommends staying up to date with the weather forecast in your area.”

Why Is This a Yellow Warning?

The Yellow level means there’s a medium likelihood of a low impact. While not all areas will see disruption, those that do could experience localised flooding, travel delays, and minor service interruptions.

South West England weather forecast

Headline:

Wet and windy start to the Easter weekend.

Today:

Often unsettled with spells of heavy rain throughout the day. Windy, especially along the coasts, and feeling cool underneath the most persistent cloud and rain. Maximum temperature 13 °C.

Tonight:

A wet and windy evening with outbreaks of rain, heavy at times, continuing into the night before easing towards dawn as winds also turn lighter. Rather mild. Minimum temperature 8 °C.

Saturday:

Rain continuing to ease, though showers still possible and remaining largely cloudy with limited bright spells in the afternoon. Temperatures up slightly on Friday’s values. Maximum temperature 15 °C.

Outlook for Sunday to Tuesday:

Dry with sunny interludes in the west on Easter Sunday; cloudier with showers possible further east. A changeable picture into next week with bright or sunny periods interspersed with showers.

Updated: 05:00 (UTC+1) on Fri 18 Apr 2025