MYSTERY FLASH >> Watch the sky light up in Grays Harbor County. There are also reports of a loud BOOM and homes shaking, via @ghcdem. No official word what happened. Thanks to Derek Hnilica for sharing this surveillance footage: https://t.co/mcWH6nT38g pic.twitter.com/Zpz4CgOAw0

— KING 5 News (@KING5Seattle) 8. März 2018