The Met Office has issued two yellow weather warnings for Pembrokeshire this weekend, as thunderstorms and heavy rain are expected to cause significant disruptions across the county.

The first warning is in effect on Saturday, 21st September, from 1am until 11.59pm. Thunderstorms and heavy showers are forecast, bringing the potential for flooding, power cuts, and, in some cases, a risk to life.

A second warning has been issued for Sunday, 22nd September, also running from midnight until 11.59pm. This time, heavy rain is expected to impact the region, again causing potential disruptions.

What to Expect on Saturday, 21st September

The Met Office has warned that the thunderstorms and heavy showers could lead to several issues:

• • Difficult driving conditions and road closures due to spray and sudden flooding
• • Potential for some communities to become cut off by flooded roads
• • Delays or cancellations to bus and train services
• • Power cuts and disruptions to other services
• • Homes and businesses may experience rapid flooding, with potential damage from floodwater, lightning, hail, or strong winds
• • Fast-flowing or deep floodwater may pose a danger to life

A Met Office spokesperson added: “While there is some uncertainty in the details, scattered showers and thunderstorms are likely to develop and spread northwestwards at times later on Friday night and throughout Saturday. Although much of the time will remain dry, where storms do occur, 20-40mm of rain could fall in under an hour, with the possibility of 50-70mm over a few hours. Hail and frequent lightning may also accompany the most intense storms, particularly during Saturday afternoon and evening.”

What to Expect on Sunday, 22nd September

On Sunday, the primary concern will be heavy rain, with the Met Office warning of similar risks to those on Saturday, including:

• • Difficult driving conditions and temporary road closures due to spray and flooding
• • Rural communities could become temporarily cut off
• • Significant delays or cancellations to public transport services
• • Homes and businesses may experience flooding, with potential structural damage
• • Power cuts and loss of other essential services

The Met Office spokesperson noted: “Showers and thunderstorms are expected to merge into broader areas of heavy rain across parts of Wales, central, and southern England on Sunday. There is the potential for rainfall totals of 30-50mm in less than six hours, with some areas seeing 60-80mm over 12-24 hours.”

Southwest England is also expected to be affected by heavy rain early on Sunday morning, which may develop into slow-moving, heavy downpours during the day.

How to Prepare for the Weather Warnings

The Met Office has provided advice to help residents prepare for the incoming weather and reduce risks. A spokesperson said:

• “Consider whether your location is at risk of flash flooding and, if so, prepare a flood plan and an emergency flood kit.”
• “Secure any loose outdoor items, such as bins, garden furniture, and trampolines, before strong winds arrive.”
• “Check road conditions and public transport timetables before travelling to avoid delays.”
• “Prepare for power cuts by gathering torches, batteries, and other essentials, such as a mobile phone power pack.”
• “If you find yourself outside during a storm, seek shelter in an enclosed space such as a car, and avoid trees or structures that could be struck by lightning.”
• “In elevated areas, move to lower ground for safety.”

The yellow weather warnings are expected to remain in place from 1am on Saturday, 21st September, until 11.59pm on Sunday, 22nd September. Residents are advised to stay updated with the latest weather forecasts and to be prepared for any changes to the warnings.