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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]
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 ...
The windstorm and resulting fire danger were well forecast. On January 2, the National Interagency Fire Center (NIFC) warned that conditions in Southern California fostered "above normal significant fire potential." [8] That same day, local National Weather Service (NWS) forecasts noted the potential for intense fires and issued a Fire Weather ...
The treacherous combination of rising temperatures and dried-up fuels has made Canadian forest much more prone to severe wildfires in recent decades, a new study has found. Driving these dangerous ...
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]
The largest, the Palisades Fire, has spread by late Monday to almost 24,000 acres with only 14% containment, according to the California Department of Forestry and Fire Protection.
The ensemble variant of the GEM is known as the Global Ensemble Prediction System (GEPS). It has 20 members (plus control) and runs out 16 days, the same range as the American global forecast system. The GEPS runs alongside the GFS ensemble to form the North American Ensemble Forecast System. A regional ensemble prediction system (REPS ...
The National Weather Service office in Los Angeles said periods of winds gusting 30-50 mph are expected, with gusts from 50-75 mph for wind-prone mountains and foothills through at least Tuesday ...