Discover Nature Webinar: Community Destruction during Extreme Wildfires – A Home Ignition Problem

Thursday, September 9, 2021
10am – 11:30am

$10 suggested donation (Free for Friends of Pepperwood)
Ages 13 and up welcome
VIRTUAL – meet on Zoom

Wildfires are inevitable, so wildfires during severe conditions producing extreme fire conditions are inevitable. Discover how homes can ignite during extreme wildfires and how that provides opportunities for preventing home ignitions and the inevitability of Wildland-Urban fire disasters. In this presentation, we will hear from Dr. Jack Cohen about his research on community fire destruction, and gain insight into potential solutions to the home ignition problem.

Using computational modeling, laboratory and field experiments, and investigations of wildland-urban fire disasters, Dr. Cohen’s research discovered that home ignitions during extreme wildfires are determined by the characteristics of a home in relation to a home’s surroundings within 100 feet (30 meters) and called this area the home ignition zone (HIZ). He applied this understanding to develop the National Fire Protection Association (NFPA) “Assessing Structure Ignition Potential from Wildfire” training and co-developed the NFPA Firewise USA program.

Jack Cohen, PhD
Research Physical Scientist, US Forest Service Research, Retired
Missoula, Montana, USA
Jack Cohen has been involved in wildland fire since 1972 – operationally as a firefighter and Fire Behavior Analyst, and research as a scientist. As a Research Physical Scientist he did fire behavior research at US Forest Service fire laboratories in Missoula, MT, Riverside, CA and Macon, GA from 1976 until his retirement in 2016.

This webinar will consist of a live multimedia presentation and include time for facilitated Q&A.

*This lecture will be held online using the Zoom Webinar platform. Once you register, you will be emailed the link and instructions on how to join the Zoom Webinar at the scheduled time. You can join this event using a computer, smartphone, or tablet – in your web browser or by downloading the Zoom application.

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Register for this event using the secure form below. 

To register, select the applicable level below, either General or Friends of Pepperwood and click +Add. On mobile devices, please scroll all the way to the right to find the +Add button. In the pop up window, enter your information and scroll to the bottom to click “Continue”. Next, on the main form, you may add your additional donation amount in the open field, then click the green “Continue” button to move to the final page for payment. Click the green “Process” button on this final page to complete your transaction. 

For all questions about this event, please contact Holland Gistelli, Education Program Coordinator, at or (707) 591-9310 x 124.

Friends of Pepperwood: Enter the code you received as a current Friend of Pepperwood to receive your discount. If you’re not sure about your Friends of Pepperwood status or don’t know the code, contact Sloane Shinn, Community Associate, at or (707) 591-9310 x 133. Click here to become a Friend of Pepperwood today!

Registration for Friends of Pepperwood opens Monday, July 19, 2021. Registration opens for the public on Friday, July 23, 2021.