Tomorrow evening promises an electrifying show across central and northern/north-eastern France, along with a potential sprinkle of excitement in western Belgium. It’s all thanks to a warm air mass mingling with a hint of instability, brewing the perfect recipe for heavy, thunderous downpours.
Our trusty thunderstorm risk data paints a vivid picture: red hues signal a high chance of thunderstorms bursting forth. But even as night falls, the risk remains palpable across the southern reaches of the UK, albeit with a slightly toned-down intensity.
![](https://chorleyweather.com/wp-content/uploads/2024/04/thun_risk_31.png)
![](https://chorleyweather.com/wp-content/uploads/2024/04/thun_risk_37.png)
![](https://chorleyweather.com/wp-content/uploads/2024/04/thun_risk_43.png)
These thundery downpours will develop in and unsettled warm air mass, which has drifted eastward from Germany. Curiously, this air embarked on its journey from the sunny Mediterranean, taking a scenic route through Italy before settling in Germany. A warm front separates this warmer air mass from the colder air mass to the east. Where this boundary lays is where the developments are most likely to occur.
![](https://chorleyweather.com/wp-content/uploads/2024/04/t850ex_37.png)
![](https://chorleyweather.com/wp-content/uploads/2024/04/ico_tkboden_na_036.png)
The latest intel suggests these storms might graduate to a more organised state, with whispers of supercells or even the grandeur of a Mesoscale Convective System (MCS). Brace yourselves, as these formidable formations could unleash hailstones of considerable size in localised areas.
![](https://chorleyweather.com/wp-content/uploads/2024/04/arpege_hail_risk_37.png)
Using the freshest high-resolution AROME data, meticulously brewed in-house, we can see the thundery developments blowing up across central France before drifting intentionally north into northern/north-eastern France before heading into southern parts of the UK. Western Belgium may come tantalising close but ultimately may miss out this time.