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Fire (Wildfire)

 

According to the U.S. Forest Service, in 2012 there were 67,774  wildfires across the country that burned 9,326,238  acres. Though fewer fires were reported more acres burned in 2012 than 2011.  

Ongoing drought conditions in many states increased the risk of wildfires in 2013. By mid-July 23,926 fires had burned 1,914,633 acres.  Check the U.S. Forest Service for a map of current large incidents.

The  National Voluntary Organizations Active in Disaster (NVOAD) and the Extension Disaster Education Network (EDEN)  webinar on Wildfires in the Northwestern Pacific Region archived webinar.  The featured presenter:

o Marlita Reddy-Hjelmfelt, Technology Consultant with VOST and Oregon VOAD

Social Media's Use during Wildfires in Oregon

This webinar is part of an on-going partnership of the two organizations to help address drought issues. For more information visit: National VOAD at http://www.nvoad.org/task-forces/drought-task-force-2012 and EDEN at www.eden.lsu.edu/drought.

 

See additional details on the 2013 Wildfires page

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Resources for Extension Educators 

These resources for homeowners, firefighters, designers and developers, youth, and families:

 

  • The EDEN Catalog of Extension Resources includes over forty entries dealing with wildfire, principally from these states: Nevada, Colorado, California and Michigan.
    Search the catalog for "Wildfire". You can limit the search to specific states, if desired.

If you have a wildfire resource to catalog and need help, contact Pat Skinner or Abby Hostetler.


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Wildfire Basics 

Introduction

Wildfire is a naturally occurring phenomenon with some experts describing it as Mother Nature’s method of housekeeping, i.e., a way to dispose of dead brush, branches, limbs and logs.  Wildfire is also a way for fire-dependent species to reproduce and survive.  However, wildfire is also caused by human behavior; in these situations often homes are lost or damaged.  Wildfires occur around the globe, but certain ingredients such as fuel (vegetation) type, humidity, weather trends and topography make some geographic areas more fire-prone than others.  For example, an area with large sections of dry or dead vegetation, or areas with large amounts of resinous plants such as conifers (pines, spruces, etc.), brush, chaparral, or palmetto cause that area to more likely experience a wildfire.

Frequency of Wildfire

The frequency and the intensity of wildfires vary due to fuels, climate and topography.  While a state such as Michigan will experience around 8,000 wildfires per year with most under 100 acres in size, other states such as California, will experience tens of thousands of wildfires per year, but most will be under 100 acres in size. We remember the wildfires where many homes are destroyed. The 1991 Oakland Hills fire, where almost 3,000 structures were destroyed covered about 1,500 acres. The 2003 Cedar fire in Southern California burned 275,000 acres and destroyed about 2,400 structures. Often, wildfires occur during specific seasons.  For example, in the Great Lakes area, spring is the predominant wildfire season due to extensive fine fuels (grass, leaves) that are left after the snow melts.  Couple this with the traditional yard clean-up, including raking and burning, and we see why wildfires are a problem at this time.  However, in other states, late spring through fall are the predominant seasons. However, being weather-dependent, wildfires can occur at any time, in any state, depending on conditions.

Wildfire Causes

The cause of wildfires also varies.  For instance, in Western states and Florida, up to half of all wildfires are caused by lightning, whereas in the Great Lake States, only around 5 percent are caused by lightning unless there has been an extended drought.  In those cases 100 percent of lightning strikes can result in a wildfire.

Other causes of wildfire include carelessness in burning debris, ATV exhaust, equipment fires, campfires, fireworks, downed power lines, arson, children playing with matches, other human activities such as smoking, and even trains.

Topography

Slope, hills, valleys, canyons, and mountains have an important effect on wildfire.  Wildfire will intensify as it climbs a slope due to “pre-heating” of the fuels immediately up-slope.  Canyons and chimneys can funnel winds and the wildfire uphill, creating even more intensity.  Some areas are known for high winds, such as in southern California where the Santa Anna winds are well known to increase wildfire intensity.  Homes built on these slopes or at the top of ridges are in the direct path of wildfire.  This not only means the homes are in the most vulnerable location, but also adds to the problem of evacuation should a wildfire occur.


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Protecting Homes and Communities 

Protecting Homes & Structures: Firewise Communities Project

The Firewise Communities Project, led by the National Fire Protection Agency (NFPA) and implemented at the local level by various agencies, fire departments and home owner associations, is designed to help protect homes, structures, and personal property. The essence of the Firewise Program is to help homeowners understand wildfire behavior and threat in their communities and take steps to mitigate (reduce the impact) against wildfire threat. The program recommends such techniques as creating defensible/defendable space around the home to prevent a passing wildfire from igniting the home or surrounding structures.

Michigan Firewise Communities Project 

Other statewide programs provide similar information to homeowners and homeowner groups. Examples of these include Nevada’s Living With Fire Program, Fire Safe Councils in California.

Protecting Communities:Community Wildfire Protection Planning

Communities can work together to protect against wildfireby developing a Community Wildfire Protection Plan (CWPP). This process involves local, state and federal agencies as well as officials who identify the wildfire threats to the community and look for coordinated ways to mitigate the hazard. Typically one or more area assessments are made by wildfire experts to identify and evaluate fuel threats or vulnerabilities, such as lack of egress roads, fire protection capacity, water resources, etc. Once the CWPP has been developed and approved, it serves as a guide for local officials to follow as steps are taken to reduce wildfire vulnerability to the community. Agencies, such as the USDA Forest Service, State Department of Natural Resources (or equivalent), university Cooperative Extension Services, fire departments, local planning officials and homeowners (usually working with their local Firewise or Firesafe organization), work together to complete a CWPP.


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EDEN/eWIN Team Working 

Mark Hansen (MI),  retired EDEN delegate and former member of the eXtension Wildfire Information Network (eWIN) Community of Practice  worked with the eWIN group to help us start the "Wildfire" topic for EDEN and the Extension educator audience. Visit the Wildfire eXtension page for wildfire fact sheets.


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Last Updated:7/26/2013 2:10 PM
 

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