The word(s) "calamity" appears 7 time(s) in 7 verse(s) in Quran in Saheeh International translation.

(1) And if there was any qur'an by which the mountains would be removed or the earth would be broken apart or the dead would be made to speak, [it would be this Qur'an], but to Allah belongs the affair entirely. Then have those who believed not accepted that had Allah willed, He would have guided the people, all of them? And those who disbelieve do not cease to be struck, for what they have done, by calamity - or it will descend near their home - until there comes the promise of Allah. Indeed, Allah does not fail in [His] promise.

(سورة الرعد, Ar-Ra'd, Chapter #13, Verse #31)
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(2) It may be that my Lord will give me [something] better than your garden and will send upon it a calamity from the sky, and it will become a smooth, dusty ground,

(سورة الكهف, Al-Kahf, Chapter #18, Verse #40)
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(3) Thamud and 'Aad denied the Striking calamity.

(سورة الحاقة, Al-Haaqqa, Chapter #69, Verse #4)
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(4) But when there comes the greatest Overwhelming calamity -

(سورة النازعات, An-Naazi'aat, Chapter #79, Verse #34)
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(5) The Striking calamity -

(سورة القارعة, Al-Qaari'a, Chapter #101, Verse #1)
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(6) What is the Striking calamity?

(سورة القارعة, Al-Qaari'a, Chapter #101, Verse #2)
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(7) And what can make you know what is the Striking calamity?

(سورة القارعة, Al-Qaari'a, Chapter #101, Verse #3)
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