Overview
- Yosemite National Park issued a public safety notice describing “Summer Branch Drop” and asking visitors to report fallen limbs to rangers so park crews can respond.
- The park says the failures most often affect long, horizontal branches on California black oaks and typically break three to 12 feet out along the limb rather than at the trunk.
- Officials warn many dropped limbs show no obvious decay and that older, less vigorous trees that have already lost a limb are more likely to shed another one.
- The warning has drawn renewed attention because media reports linked the hazard to the July 2025 death of Angela Lin, though the park and public records have not confirmed Summer Branch Drop as the definite cause.
- Yosemite’s guidance tells visitors not to stand, picnic, or camp under large oak branches on hot days and to move away immediately if they hear a loud crack, a change that could alter campsite and trail use and help park crews manage tree risk.