Similarly,
Ex-time dexter: origin heat wave:
1. Moreover, Why did the storm Dexter amplified the heat wave in France?
Trained in early August 2025 off the United States, Dexter was organized in full Atlantic without ever threatening the land directly. Similarly, But it had a major indirect role in our weather.
A well identified mechanism : Dexter was captured by a Talweg (bass pressure zone) in the North Atlantic. Meanwhile, This interaction has reinforced the anticyclone of the Azores. Similarly, a true engine which acted as a heat pumpproposing to France burning air from Morocco and Spain.
Immediate consequences : Between August 7. Consequently, 16, temperatures took off, more permanently affecting the south and the center of the country. Furthermore, ex-time dexter: origin heat wave Several absolute records have been broken: 41.6 ° C in Bordeaux, 42.1 ° C in Bergerac. However, In Hérault, at Moubs-et-constructionclesthe threshold of 40 ° C was crossed six consecutive days. Toulouse has experienced a historic series of 10 days in a row beyond 35 ° Cunheard of since August 2003. Finally, to Sètethe night of August 15 to 16 was the warmest ever observed, with a minimum temperature of 30 °C.
An exceptional episode, but less intense than 2003 :
In August 2003, the national thermal indicator had exceeded 28 ° C ten consecutive daysculminating at 29.5 ° C on August 5.
In 2025, this threshold was not crossed, with a maximum of 27.43 ° C on August 12.
Another difference: the heat wave of 2003 concerned All of Francewhile in 2025 the north of the country remained generally away. knowing only a brief peak in hot weather.
2. ex-time dexter: origin heat wave And the upcoming violent thunderstorms?
Dexter has not finished influencing our weather. After an immobility phase on the Atlantic, this ex-tropical time will be taken up by the ocean current. Early next week, she should isolate herself in cold drop above France. This phenomenon. in contact with a very hot air, will create a air masses conducive to the triggering of violent thunderstorms.
The expected chronology:
Monday August 18 : first signs of degradation to the west. The weather remains hot but begins a withdrawal. Tuesday August 19 : intensification with sometimes strong thunderstorms, accompanied by gusts of wind, hail and intense rain. Temperatures will drop significantly. Wednesday August 20 : Progress of cold drop to the east, with possible violent thunderstorms from the Southwest to the eastern borders. Thursday August 21 : The disturbance gradually evacuated to Italy. Central Europe, but new thunderstorms will still be able to concern ex-time dexter: origin heat wave the South and the East.
3. A spectacular drop in temperatures
Thanks to these thunderstorms, mercury will collapse quickly. Between this weekend and next Wednesday, we are waiting for a drop from 10 to 15 ° C in the south. At the end of the week, freshness should cover the whole countryending this lasting heat wave.
In summary
The current heat wave in France is largely linked to the indirect effects of the ex-head Dexterwho. fueled a heat pump came from the south.
As of Monday, Dexter will promote the implementation of a cold dropat the origin of a Strong stormy degradation.
Next week will mark a Radical turningwith violent thunderstorms and a sudden drop in temperatures.
Ex-time dexter: origin heat wave
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