Margaret McKinley Missing: San Mateo County Searching for Missing 79-Year-Old Hiker with Dementia

Margaret McKinley Missing- Authorities in San Mateo County are conducting an intensive search for a 79-year-old woman who disappeared while hiking with her family at the Windy Hill Preserve. The woman, identified as Margaret “Elaine” McKinley, has been missing since Thursday afternoon, and officials are urging the public to remain alert and report any possible sightings.

McKinley, who has dementia, was last seen around 2 p.m. on Thursday when she became separated from her family during a hike. The family had been enjoying a day outdoors at the scenic Windy Hill Open Space Preserve, a popular destination for hiking and nature outings. What began as a leisurely afternoon took a serious turn when McKinley suddenly vanished from the group.

Recognizing the potential danger, especially given McKinley’s medical condition and the expansive terrain, her family quickly contacted local authorities. Search and rescue teams were immediately dispatched to the preserve and began combing the area in hopes of locating her.

Crews from multiple agencies joined the effort, deploying trained personnel, tracking dogs, and aerial support in their search. As of the latest reports, McKinley has still not been found, and the search operation remains ongoing.

The Windy Hill Preserve spans more than 1,300 acres of open space and includes miles of trails, steep slopes, and dense vegetation, making the search both challenging and urgent. Authorities are concerned that McKinley may be disoriented or physically unable to return to safety on her own due to her dementia and age.

San Mateo County Sheriff’s officials emphasized that every minute counts in situations like this and asked anyone who may be in or around the preserve to stay alert and keep an eye out for McKinley. They have released her name and physical description in hopes that members of the public or fellow hikers might spot her.

At the time of her disappearance, McKinley was reportedly dressed for a hike, though specific details about her clothing and physical appearance have not been widely circulated. Authorities have advised the public not to attempt to approach her if spotted, as individuals with dementia can sometimes become frightened or confused. Instead, they are asking people to call 911 immediately to report any sightings or information that may help rescue crews.

The sheriff’s department has expressed concern not only about McKinley’s medical condition but also about the elements. While spring weather in the area is generally mild, temperatures can drop significantly after sunset, and the rugged terrain poses additional hazards for someone who is lost or injured.

In a press briefing, search leaders stated they are treating this search as their top priority and are rotating teams to ensure the area remains covered day and night. Volunteers have also offered assistance, but officials have asked that members of the public not enter the preserve independently to help search, as doing so could disrupt organized efforts or create additional risks.

Family members of McKinley remain hopeful but are growing increasingly anxious as time passes. They have thanked search crews and the public for their support and prayers, asking anyone with even the smallest lead to come forward. The family has described McKinley as a beloved mother and grandmother with a gentle personality, who enjoys the outdoors but has struggled with memory issues in recent years.

While the Windy Hill Preserve is typically a place of peace and recreation, it has now become the center of a life-or-death search. Park rangers and Midpeninsula Regional Open Space District officials have been assisting by managing visitor traffic and helping coordinate with law enforcement and search personnel.

As of Friday, drones and thermal imaging devices were being used to expand the search area, especially in thick brush or areas that are difficult to access on foot. The terrain, while beautiful, presents many challenges, including steep trails, uneven ground, and dense vegetation. These conditions have complicated the operation and underscored the urgency of locating McKinley as quickly as possible.

Officials remain cautiously optimistic and are committed to continuing the search until McKinley is found. They are asking hikers and residents in the surrounding area to remain alert and to report anything unusual. Even small pieces of information, such as seeing someone who appears confused or spotting personal items left behind, could provide crucial clues.

The San Mateo County Sheriff’s Office has encouraged the public to share any information by calling 911 immediately. They also ask that people stay tuned to local news or the sheriff’s department’s official channels for updates.

As the search enters its second day, hope remains that Margaret “Elaine” McKinley will be found safe. Her family, local authorities, and a growing group of concerned citizens continue to hold out hope and work together toward a successful rescue.