heat storm

(名詞/可數) 熱暴 - 持續數日之久的極熱天氣和高濕度。

Europe is preparing for a "severe heat storm" with a second heatwave pushing temperatures even higher in the coming days and triggering warnings for tourists planning to travel for the school holidays. The new "heat storm" is being triggered by an anticyclone – a large-scale circulation of winds around an area of high atmospheric pressure – pushing north.
[telegraph.co.uk, 16 July 2023]