ðə kɐθˈiːdɹəl səstˈeɪnd sɪɡnˈɪfɪkənt dˈæmɪdʒ dˈʊɹɹɪŋ ðə nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi fˈaɪv hɛlˈiːnə ˈɜːθkweɪk, wˌɪtʃ ɹᵻkwˈaɪɚd ɛkstˈɛnsɪv ɹˌɛnəvˈeɪʃənz.
The cathedral sustained significant damage during the 1935 Helena earthquake, which required extensive renovations.