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International Journal of Wildland Fire International Journal of Wildland Fire Society
Journal of the International Association of Wildland Fire
RESEARCH ARTICLE (Open Access)

High wildfire damage in interface communities in California

Heather Anu Kramer https://orcid.org/0000-0003-2014-0070 A D , Miranda H. Mockrin B , Patricia M. Alexandre C and Volker C. Radeloff A
+ Author Affiliations
- Author Affiliations

A SILVIS Lab, Department of Forest and Wildlife Ecology, University of Wisconsin–Madison, 1630 Linden Drive, Madison, WI 53706, USA.

B Northern Research Station, USDA Forest Service, 5523 Research Park Drive Suite, 350 Baltimore, MD 21228, USA.

C Forest Research Centre, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal.

D Corresponding author. Email: hakramer@wisc.edu

International Journal of Wildland Fire 28(9) 641-650 https://doi.org/10.1071/WF18108
Submitted: 14 July 2018  Accepted: 24 June 2019   Published: 30 July 2019

Journal compilation © IAWF 2019 Open Access CC BY-NC-ND

Abstract

Globally, and in the US, wildfires pose increasing risk to people and their homes. Wildfire management assumes that buildings burn primarily in the wildland–urban interface (WUI), where homes are either ignited directly (especially in intermix WUI areas, where houses and wildland fuels intermingle), or via firebrands, the main threat to buildings in the interface WUI (areas with minimal wildland fuel, yet close to dense wildland vegetation). However, even urban areas can succumb to wildfires. We examined where wildfire damages occur among urban, rural and WUI (intermix and interface) areas for approximately three decades in California (1985–2013). We found that interface WUI contained 50% of buildings destroyed by wildfire, whereas intermix WUI contained only 32%. The proportion of buildings destroyed by fires among classes was similar, though highest in interface WUI areas (15.6%). Our results demonstrate that the interface WUI is where most buildings were destroyed in California, despite less wildland fuel. Continued advancement of models, mitigation and regulations tailored for the interface WUI, both for California and elsewhere, will complement the prior focus on the intermix WUI.

Additional keywords: destruction, hazard, housing loss, plan, policy, wildland–urban interface.


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