Videos of intense flames in tweets below:
https://twitter.com/CalebJHull/status/1117839474292031494
https://twitter.com/shivmalik/status/1117839256473538560
https://twitter.com/Solwii/status/1117838050342645760
Breaking: Notre Dame on fire in Paris
https://twitter.com/CalebJHull/status/1117839474292031494
https://twitter.com/shivmalik/status/1117839256473538560
https://twitter.com/Solwii/status/1117838050342645760
Breaking: Notre Dame on fire in Paris