WUIVAC: a wildland-urban interface evacuation trigger model applied in strategic wildfire scenarios |
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Authors: | Philip E Dennison Thomas J Cova Max A Mortiz |
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Institution: | (1) Center for Natural & Technological Hazards, Department of Geography, University of Utah, 260 S. Central Campus Dr., Rm. 270, Salt Lake City, UT 84112-9155, USA;(2) Center for Fire Research and Outreach, Department of Environmental Science, Policy, and Management, University of California Berkeley, Berkeley, CA 94720, USA |
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Abstract: | An evacuation trigger is a point on the landscape that, once crossed by a wildfire, triggers an evacuation for a community.
The Wildland-Urban Interface Evacuation (WUIVAC) model can be used to create evacuation trigger buffers around a community
using fuels, weather, and topographic inputs. A strategic, community-scale application of WUIVAC for the town of Julian, California
was investigated. Eight years of wind measurements were used to determine the worst-case (strongest) winds in 16 directions.
Surface fire rate of spread was used to calculate evacuation trigger buffers for the communities of Julian and nearby Whispering
Pines, and for three potential evacuation routes. Multiple trigger buffers were combined to create fire planning areas, and
trigger buffers that predict the closure of all evacuation routes were explored. WUIVAC trigger buffers offer several potential
benefits for strategic evacuation planning, including determination of when to evacuate and locating potential evacuation
routes. |
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Keywords: | Fire behavior Wildfire Evacuation modeling Natural hazards |
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