Heat Returns to France Before Violent Thunderstorms Arrive

France is set to experience a surge in temperatures as a mass of very warm air moves across the country, driven by a southerly flow from the Iberian Peninsula. This widespread heatwave will push maximum temperatures between 28 and 34 degrees Celsius, with some areas in the southwest potentially seeing even higher readings.

The warm and summery conditions, described as sometimes heavy, will prevail across much of France, particularly from the center towards the east and southeast. However, this period of warmth is brief, serving as a prelude to a significant change in weather patterns.

By the end of Wednesday, an Atlantic depression moving in from the west will bring instability. The first thunderstorms are expected to develop over Brittany and along the Atlantic coast. These storms could be locally severe, accompanied by heavy rain, strong gusts of wind, and intense electrical activity, continuing into the early hours of the night.

This weather shift signifies the end of a largely summer-like day. Thursday is forecast to bring a more widespread and violent thunderstorm degradation across the country, moving from south to north. Conditions will be ripe for severe phenomena, including heavy rain, hail, powerful gusts, and marked electrical activity, marking a definitive break from the preceding summer weather.