Public Safety

Missing 19-Year-Old Not Found on Lake Washington

Monday, August 3, 2026

1 min read

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Mercer Island Police began a missing person investigation on July 31 after a 19-year-old male was reported missing from a recreational vessel on Lake Washington during the Seafair air show and hydroplane races. The vessel was traveling at planing speed when the teen reportedly left the deck to use the restroom; he was not found when the vessel slowed near the I-90 bridge.

Investigators are analyzing cellular phone location data to narrow search areas and will resume operations during daylight hours. The search area covers 10 square miles around the Lacey V. Murrow Memorial Bridge. No contact has been made with the missing individual since the incident, and no additional information is being released as the investigation remains ongoing.

📄 Source: City of Mercer Island — News — https://www.mercerisland.gov/police/page/missing-person-investigation-underway-lake-washington-0

Source receipts9 of 10 claims supported · 90%

Legacy automated check: the original source text was not preserved. These earlier verdicts have not passed the current publication checks and may contain errors. Source: original document ↗

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Mercer Island Police began a missing person investigation on July 31“On July 31, 2026, at approximately 10:40 p.m., the Mercer Island Police Department Marine Patrol responded to a report of a missing person believed to have fallen or entered the water from a recreational vessel on Lake Washington.”
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A 19-year-old male was reported missing from a recreational vessel on Lake Washington“On July 31, 2026, at approximately 10:40 p.m., the Mercer Island Police Department Marine Patrol responded to a report of a missing person believed to have fallen or entered the water from a recreational vessel on Lake Washington.”
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The missing person incident occurred during the Seafair air show and hydroplane races“According to the preliminary investigation, the vessel and its occupants had been on Lake Washington during the Seafair air show and hydroplane races.”
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The vessel was traveling at planing speed when the teen reportedly left the deck to use the restroom“The vessel was underway at the time and may have been traveling at planing speed.”
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The teen was not found when the vessel slowed near the I-90 bridgeNo usable supporting receipt — unverified.
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Investigators are analyzing cellular phone location data to narrow search areas“Investigators continue to actively investigate the incident and are working to obtain and analyze available cellular phone location data in an effort to further narrow the search area.”
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Investigators will resume operations during daylight hours“Search operations are expected to resume during daylight hours.”
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The search area covers 10 square miles around the Lacey V. Murrow Memorial Bridge“The search area encompasses approximately 10 square miles, including the waters surrounding the Lacey V. Murrow Memorial Bridge (Interstate 90).”
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No contact has been made with the missing individual since the incident“As of this update, the missing 19-year-old has not made contact with family or friends.”
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No additional information is being released as the investigation remains ongoing“No additional information is being released at this time as the investigation remains ongoing.”