Washington Operations Center Date: 2/16/2023 4:35:00 PM (-08 PST) Title: ASA688 UFO-UAP ACTIVITY 02-16-2023 Latitude: 47.204968520000001 Latitude: -122.1810084 DESCRIPTION PRELIM INFO FROM FAA OPS: SEATTLE, WA/UFO-UAP ACTIVITY/1635P/SEATTLE ARTCC ADVISED ALASKA 688, B739, SEA - LAS, REPORTED A DARK OBJECT DESCRIBED AS POSSIBLE UAS/BALLOON AT SAME ALTITUDE FROM THE 2 O'CLOCK POSITION WHILE SSE BOUND AT 10,700 FEET 18 SSE SEA. NO EVASIVE ACTION TAKEN. LEO NOTIFICATION NOT REPORTED. WOC 7-3333 JF/TB