Western Tree Failure Database Annual Meeting - Presented on Zoom

@ Online Event
on Thursday, January 28, 2021
in Porterville, CA

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Non Member


Sale ends Jan 25


Or would you prefer to call?
+ 1 866 785 8960

Conference Description:

Join us for our annual Western Tree Failure Database conference, but this year we are going virtual! We have speakers from all over North America. Our speakers will be covering topics from likelihood of failure while climbing (anchor), how to gauge risk for a storm, understanding trees and how they fail, and impact on structure from fire. It's a well rounded day!

If you would like to submit to present a case study please send your case study to Larry Costello at larrycostello@me.com. He will contact you about presenting. 


9:00am Welcome and Introductions
Larry Costello, Oracle Oak LLC, San Francisco, CA, larrycostello@me.com
Igor Lacan, UCCE, Half Moon Bay, CA
9:10am Tree Failure Case Studies (2)
Speakers TBD - email Larry your case study!
9:45am Loading on Trees Associated with Climbing: Likelihood of Failure of an Anchor
Brian Kane, Massachusetts Arborists Association Professor, University of Massachusetts - Amherst, Amherst, MA
10:45am Break
11:00am How Well can We Gauge the Risk of Failure? Insights from a Tropical Storm
Andrew Koeser, Associate Professor, Gulf Coast Research and Education Center, University of Florida, Wimauma, FL
12:00pm Break
12:30pm Tree Failures: Know What to Look for Know What You're Looking At
Dr. Julian Dunster, Consulting Arborist, Dunster & Associates Environmental Consultants, Victoria, BC, Canada
1:30pm Break
1:45pm Impacts of Fire on Tree Structure: Observations from the Field
James MacNair, Consulting Arborist, MacNair & Associates, Glen Ellen, CA
2:45pm Training for New Cooperators
Katherine Jones, WTFD Database Manager (treefail@mac.com)
3:30pm CEU Sign Out
*Please allow up to 6 weeks for processing of CEUs


  • $85.00 - WCISA Member
  • $115.00 - Non-WCISA Member
  • Students - Please call our office 866.987.8960


  • 4.5 - CA / CTW
  • 2.0 - BCMA-P
  • 2.5 - BCMA-M

Optional Training:

  • 0.75 - CA / CTW
  • 0.75 - BCMA-M

Online Event
31910 Country Club Dr.
Porterville, CA 93257