from Cornwall to to the far north of Scotland is set to bombard Britain with a in hours - and only one city looks likely to escape a soaking. The 742-mile-long band of wet weather will storm in from the Atlantic and cover most of the country today (Saturday June 7) bringing "frequent heavy showers, thundery with gusty winds and hail".

New from WXCharts show almost everywhere will see rainfall, except perhaps for Scotland's second city of Glasgow, which looks likely to escape with just a covering of cloud. The Met Office has also issued a yellow thunderstorm warning which comes into effect from 9am and covers parts of central and southern England and Wales. the UK, with the Met Office also covering 66 UK ares today.

A statement from the Met Office said Saturday was looking a "very showery day" with "frequent heavy showers, some thundery with gusty winds and hail".

Met Office Chief Meteorologist Dan Suri explains: "Frequent heavy showers and thunderstorms are expected for much of Saturday, before they fade from the west during the mid-to-late afternoon.

"It's possible that 10-15mm of rain could fall in less than an hour, while some places could see 30-40mm of rain over several hours from successive showers and thunderstorms. Frequent lightning, hail, and strong, gusty winds are also possible.

"A yellow warning for thunderstorms has been issued and covers parts of central and southern England and Wales. While brisk winds ensure that most places in the warning area will be hit by showers, not all places will see thunderstorms.

"In this case it's difficult to predict where exactly thunderstorms will hit because they are small and fast changing.

"One analogy we use to picture the complexity of this forecasting challenge is comparing it to boiling a pan of water and having to guess exactly where and when the bubbles will appear. We know some will, but only in certain places, and that is why thunderstorms are so hard to predict."

Looking ahead for the rest of the week, the Met Office said Tuesday could the possibility of a new low-pressure-system which is currently far out in the Atlantic could push a warmer weather system in over the country.

It added: "This low would help to develop a more southerly flow for the UK though, bringing warmer air from Wednesday onwards. Although temperatures look set to rise - with the high 20s possible in the southeast on Thursday - this warm air also brings with it the risk of thunderstorms, which could mean an unsettled end to the week."