News: Sudden Oak Limb Drop

Sudden Branch Drop (doc) - Napa Valley Register, August 12, 2006: "The somewhat mysterious phenomenon is distinct from other types of branch failures such as those caused by weak branch attachments, cracks and decay."

Danger in the Beauty Above (doc) - Yosemite Ranger Notes,  September 12, 2014: "One of those dangers is sudden oak limb drop; a mysterious and potentially deadly phenomenon."

News: Annais Rittenberg Killed at Camp Tawonga

Lawsuit filed in death of camp counselor. San Francisco Chronicle. Wednesday, August 7, 2013

Parents of woman killed by fallen tree frustrated with camp. ABC-7, Friday, July 05, 2013

Death, Injuries After Tree Falls at Jewish Camp Tawonga. NBC-11, Thursday, July 4, 2013

Student Killed by Fallen Tree at Jewish Camp Tawonga Near Yosemite. ABC-7, Thursday, July 4, 2013

Annais Rittenberg, 21, killed by falling tree in ‘freak accident’ at summer camp as children ate breakfast.  New York Daily News, Thursday, July 4, 2013.

Mother mourns daughter killed at camp near Yosemite. LA Times, Wednesday, July 3, 2013

News: Annais Rittenberg Death Investigation


News: Pasadena Arborist Report on Tree Collapse Issued

City of Pasadena, July 28, 2015: "An independent, certified arborist hired by the City to investigate the sudden collapse of an Italian Stone Pine tree in front of Kidspace Museum in Brookside Park said several factors most likely contributed to the tree’s failure July 28, 2015.  Arborist Ted Lubeshkoff of JTL Consultants wrote in a seven-page report there were several possible contributing factors that may have caused the tree to fall, including absence of anchoring roots; a slight lean in the tree; recent drought conditions and heavy weight due to increased water uptake following recent rains."

Download the complete tree failure report (PDF).

News: Serious Drought Update

Amid California drought, fears rise of trees dying, falling AP, July 31, 2015

"As Californians and the communities they live in cut back water use and let lawns turn brown, arborists and state officials are worrying about a potentially dangerous ripple effect: City trees going neglected and becoming diseased or even collapsing."

Hazard Trees (pdf)

Federal government releases warning document about hazard trees in Idaho Panhandle National Forest.