The fact
The formation of cumulonimbus clouds, driven by high temperatures, triggered the warning.
The Alpes-de-Haute-Provence and Hautes-Alpes regions are among the affected areas.
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The formation of cumulonimbus clouds, driven by high temperatures, triggered the warning.
The Alpes-de-Haute-Provence and Hautes-Alpes regions are among the affected areas.