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May 2025Archived

 

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Western Tree Failure Database/California Tree Failure Report Program: Page

Big Wind in Marin County

Big wind in Marin Thursday morning, March 24, 2011, in west Marin it was raining and windy. It felt like a tornado, but according to the Marin Independant Journal, the meteorologists say "No. It was a 50-60 mph wind gust.
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Western Tree Failure Database/California Tree Failure Report Program: Page

Umbellularia californica

California bay root failure Photo: R. Edberg California bay root failure Photo: R. Edberg California bay trunk failure Photo: R. Edberg California bay branch failure Photo: R. Bushwag California bay branch failure Photo: R.
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Western Tree Failure Database/California Tree Failure Report Program: Page

Ulmus parvifolia

Evergreen elm branch failure Photo:M. Camfield Evergreen elm branch failure Photo: B.
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Western Tree Failure Database/California Tree Failure Report Program: Page

Calocedrus decurrens

Incense cedar root failure Photo: K. Jones Incense cedar trunk failure Photo: R.
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Western Tree Failure Database/California Tree Failure Report Program: Page

Pinus attenuata

knobcone pine root failure Photo: S.
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Western Tree Failure Database/California Tree Failure Report Program: Page

Ficus fracture

ficus fracture Why did it fail? Multiple trunks? Codominance? Branch end weight? All of the above?
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Western Tree Failure Database/California Tree Failure Report Program: Page

Quercus agrifolia summary comparisons

Coast live oak is the most commonly reported species in the CTFRP database. (See CTFRP Statistics/50 or more) It is the most widely planted native California oak in urban landscapes. Many remnant coast live oaks of great age can be found within developed areas.
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Western Tree Failure Database/California Tree Failure Report Program: Page

Edberg and Berry 1999

Patterns of Structural Failures in Urban Trees: Coast Live oak (Quercus agrifolia)...
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Western Tree Failure Database/California Tree Failure Report Program: Page

Branch failures by month

The database (September, 2011) contains 1878 reports of branch failures for which a date is recorded. Eight genera have 87 or more branch failure reports. The following table lists the percentage of failures that occurred for each genus for the periods May-October and November-April.
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Western Tree Failure Database/California Tree Failure Report Program: Page

Root Failures

Summary data for root failures 12/08/11. This data does not include data from the wind event of 11/30/11-12/02/11 The database contains 5264 reports. 1790 are root failures.
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