Par
Briac Trébert
Published on
The refreshment planned in the coming days in France will be short -lived. While a heat wave, which will remain in the Annals by its precocity, its duration and its records, ends, the country must already prepare to undergo another. The symbolic bar of 40 degrees Could still be exceeded next week, when summer is just starting.
“Between Wednesday, July 9 and Tuesday, July 15, the different weather models are now converging for what presents itself as a new phase of heat wave on France, which will affect many regions », Anticipates the meteorologist Yann Amice, on actu.fr. France will be found in the middle of next week under what is called a “Heat dome”.
A typical configuration of a hot atmospheric locking
It will once again be a large area of high pressures at altitude, associated with a subtropical backbone, which will settle permanently on France. And this backbone will be fueled by a small altitude anomaly – a so -called depression “Cold drop” – Positioned off Portugal. A typical configuration of a hot atmospheric blockage.
This contrast between the depressional anomaly to the west and the anticyclonic dorsal to the east will create a flow of persistent south, suckling with burning air Since the Maghreb and the Iberian Peninsula. “France will thus be found in a meridian circulation favorable to an advection of Saharan air at all levels,” summarizes Yann Amice.
The European model even sees temperatures of 43 ° C
Some weather models, the most pessimistic, namely the European model (ECMWF), even see a mercury that can rise to 43 ° C. “If it is necessary to remain cautious at this deadline, it is the signals at altitude which must already alert us to this new sequence to come,” highlights the meteorologist.
The subsidence (dry and hot air down) linked to anticyclone will strengthen this warming, compressing the air masses and even more drying the atmosphere. As a rule, we add between 13 and 17 ° C to have the temperature on the ground, even if it is far from being a frozen rule.
The maximum temperatures possible until July 17, according to the European model ECMWF (Map of Météociel):
Indeed, the different forecast models provide temperatures From 21 ° C to 24 ° C at around 1500 meters above sea level On France, a very hot signal. These values indicate a potential of more than 40 ° C on the ground in the most exposed areas.
This will be accumulated at the end of next week, and particularly around the July 14 2025, the return of a very hot air plume from the Iberian Peninsula. The 35 ° C mark should still be exceeded sometimes largely in many regions, including in the north of the country. And the heat -reached heat waves. Again.
France has just known the hottest month of June in its history
In a context accentuated by global warming, the country has already experienced the hottest month of June in its history, only exceeded by that recorded during the emblematic and exceptionally murderous heat wave of 2003.
This heat wave also extended in this very early July by a particularly marked heat wave, with several departments passing by red vigilance. If, since then, the mercury has found the “normal” on a good part of the country, the temperatures are still very hot in the Mediterranean perimeter and in the lower Rhône valley and should not really decrease before this Sunday, July 6, 2025. And it is the same at sea.
The Mediterranean is clearly overheating. Monday, June 30, it reached its hottest surface temperature ever recorded for a month of June, with 26.04 ° C. In Balearic, a buoy has recorded the unprecedented figure for June, 30.5 ° C. Its temperature has further climbed since, up to 30.99 ° C Tuesday July 1 …
Follow all the news in your favorite cities and media by registering for my news.
