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Wildland fire behavior is affected by weather, fuel characteristics, and topography. Weather influences fire through wind and moisture. Wind increases the fire spread in the wind direction, higher temperature makes the fire burn faster, while higher relative humidity, and precipitation (rain or snow) may slow it down or extinguish it altogether ...
Daily Fire Weather Index forecast. The Forest fire weather index (FWI) (French: indice forêt météo, IFM) is an estimation of the risk of wildfire computed by Météo France and the Meteorological Service of Canada. It was introduced in France in 1992 but is based on a Canadian empirical model developed and widely used since 1976. [1]
A 230 hectare fire spawned on Vancouver Island on July 22, 5 km south of Sooke Lake. The fire was held, but required 70 firefighters and three helicopters and forced the precautionary closure of nearby Sooke Potholes Regional Park. [43] [44] On July 28, BC Wildfire Services reported 372 fires, classifying 177 as out of control. [45]
These data may be acquired with a radiosonde or simulated by a numerical weather prediction model. The index is calculated over three ranges of atmospheric pressure: low elevation (950-850 millibars (mb)), mid elevation (850-700 mb), and high elevation (700-500 mb). [2]
Later in September, fire activity again decreased due to improved fire weather. [8] While numerous storms in Northern California significantly slowed fire activity in November and December, dry conditions and multiple rounds of Santa Ana Winds led to multiple wildfires in Southern California, such as the Mountain and Franklin fires.
Hot and dry weather is fueling wildfire activity in the Western United States and Canada, with fires damaging homes, causing injuries and forcing evacuations. The largest active wildfire in the US ...
Each day during the fire season, national maps of selected fire weather and Fire danger components of the National Fire Danger Rating System are produced by the Wildland Fire Assessment System (WFAS-MAPS), located at the USDA Forest Service Rocky Mountain Research Station in Missoula, Montana. Current fire danger and forecast fire danger maps ...
Millions of people across Southern California are under a red flag warning as a dangerous windstorm fanned blazes in the Los Angeles area, including the Palisades Fire, which has triggered ...