Meteorological Office compares upcoming weather to a ‘simmering cauldron’: Expect hail, lightning, and 40mm rainfall

**Met Office Draws on Kitchen Simile as Severe Weather Warning Issued for Wales and Parts of England**
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The Met Office has turned to a familiar kitchen scene to help the public grasp the unpredictability of the severe weather set to hit Wales and sections of southern and central England this weekend. With a yellow warning for thunderstorms issued, officials likened the forecasting challenge to watching bubbles form in a boiling pan of water—a vivid image to illustrate just how tricky it can be to pinpoint where and when heavy showers or lightning might strike.
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From 9am on Saturday, the Met Office’s National Severe Weather Warning will come into effect, covering broad swathes of central and southern England as well as large parts of Wales. Forecasters warn that some areas should prepare for sudden and intense weather, with up to 40mm of rain falling in places, frequent bursts of lightning, hail, and strong, gusty winds.

The unsettled conditions are set to develop swiftly, with more persistent rain and showers expected to sweep into the southwest late on Friday evening. This rain will journey east overnight, bringing blustery conditions that are likely to intensify by early Saturday, especially in coastal areas.

Saturday itself is shaping up to be a day of hazardous downpours and possible thunder. Dan Suri, Chief Meteorologist at the Met Office, highlighted the threat: “Saturday will feature frequent heavy showers, and there’s a real chance some will pack a thundery punch, with sudden gusts and the possibility of hail. In just one hour, some regions could see as much as 10-15mm of rainfall, and where storms linger, totals could rise to as much as 40mm throughout the day.”

Despite such specific forecasts, meteorologists caution that not every community within the warning zone will experience a full-throated thunderstorm. The inherently localised and quickly changing nature of such weather systems makes their precise movements particularly hard to predict. That’s where the boiling water analogy comes in. “Forecasting thunderstorms is about as challenging as guessing where bubbles will pop up in a boiling pan—you know they’ll happen, but not exactly where or when,” Suri added.

For residents wondering when relief is in sight, Sunday is forecast to bring a noticeable lull in the weather drama. Much of the UK, including Wales, can expect calmer, drier conditions. Some showers will persist, especially in northern and eastern regions during the morning, but these are predicted to become more intermittent, with bright or sunny spells forecast for many and a generally quieter day ahead.

As the new week commences, the pattern of sunshine interspersed with showers is set to continue, particularly in northern areas. Monday will likely see some wet weather up north but the south should stay mostly dry. However, meteorologists are keeping a close eye on a new low-pressure system currently way out in the Atlantic. If it strengthens, it could drive another band of rain across the country on Tuesday.

Significantly, the tail end of the week could see a dramatic turnaround in temperatures as warmer air from the south is pulled in. By Wednesday and Thursday, parts of the southeast may see the mercury nudging well into the high 20s Celsius. While many will welcome the summery feel, forecasters note that this influx of warmth also raises the risk of further thundery breakdowns and unsettled weather, particularly towards the weekend.

This erratic pattern is a vivid illustration of the variable British climate, with heavy rainfall, fluctuating temperatures and rapid changes keeping both forecasters and the public on their toes. Such variability underscores the value of preparing for a range of conditions and heeding official warnings—especially as models struggle to offer pinpoint accuracy for events as capricious as summer thunderstorms.

As communities brace for a rollercoaster of weather, the Met Office continues to urge vigilance. Those in areas covered by warnings are encouraged to follow live updates, take precautions, and be ready for sudden changes as the UK moves from heavy downpours to balmy temperatures—all within the space of a few days.