By Robert Dalling

Copyright walesonline

The Met Office has announced a yellow rain warning for Wales. It has been issued from 6am until 11pm on Wednesday and will affect the areas of Blaenau Gwent , Bridgend , Caerphilly , Cardiff , Carmarthenshire , Merthyr Tydfil, Neath Port Talbot , Powys, Rhondda Cynon Taf, Swansea and Vale of Glamorgan. A separate warning is in place for Ceredigion , Conwy , Gwynedd and Powys from 3am tomorrow to 12pm. A Met Office forecast said: “A spell of heavy rain is expected to affect parts of northwest Wales during the first part of Wednesday. “30-40 mm of rain is expected to fall widely with a few places, chiefly on south-west facing hills, receiving 50-60 mm within six hours.” The Met Office warns that spray and flooding on roads is likely to make journey times longer, and that bus and train services will probably affected too. Flooding of a few homes and businesses is possible, it says, adding that some interruption to power supplies and other services likely. It says: “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. The Met Office has three categories of weather warning, depending on the likely impact of severe weather and also how likely it is to strike in a particular area. A yellow warning is issued when weather conditions are expected to disrupt travel and traffic and may impact on daily routines but are not likely to pose a risk to life or property. An amber warning is more severe and advises people to think about changing their plans to minimise the risk. A red warning means weather conditions are expected to be dangerous with widespread damage to property and a risk to life, with the public usually advised to avoid travelling. Get daily breaking news updates on your phone by joining our WhatsApp community here . We occasionally treat members to special offers, promotions and ads from us and our partners. See our Privacy Notice