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HEAD FIRE INTENSITY [4 records]

Record 1 2024-11-14

English

Subject field(s)
  • Fires and Explosions
  • Brush, Prairie and Forest Fires
DEF

A somewhat sudden, and sometimes unexpected, major increase in rate of spread and head fire intensity sufficient to upset overall fire suppression action or plans.

OBS

Blow-ups can result from small or large fire situations.

Key term(s)
  • blow up
  • blow up fire

French

Domaine(s)
  • Feux et explosions
  • Incendies de végétation
DEF

Augmentation forte, subite et parfois imprévue de la vitesse de propagation et de l'intensité d'un incendie, suffisante pour bouleverser les mesures ou les plans généraux de lutte.

Spanish

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Record 2 2024-10-10

English

Subject field(s)
  • Meteorological Forecasting, Data Measurement and Analysis
  • Fire Detection
DEF

The rate of heat energy released at the head of the fire.

OBS

[The head fire intensity] has become one of the standard gauges by which fire managers estimate the difficulty of controlling a fire and select appropriate suppression methods.

French

Domaine(s)
  • Prévisions météorologiques et mesure et analyse des données
  • Détection des incendies
OBS

[L'intensité du front est devenue] un des indicateurs étalon en vertu duquel les gestionnaires des incendies de forêt évaluent la difficulté de contrôler un incendie et choisissent des méthodes appropriées de suppression.

Spanish

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Record 3 2024-05-16

English

Subject field(s)
  • Brush, Prairie and Forest Fires
  • Fires and Explosions
DEF

A level of fire behaviour that often precludes any fire suppression action.

OBS

[Extreme fire behaviour] usually involves one or more of the following characteristics : high rate of spread and head fire intensity, crowning, prolific spotting, presence of large fire whirls, and a well-established convection column. Fires exhibiting such phenomena often behave in an erratic and dangerous manner.

Key term(s)
  • extreme fire behavior

French

Domaine(s)
  • Incendies de végétation
  • Feux et explosions
DEF

Comportement d'un feu dont la vitesse, l'intensité ou le comportement erratique limite ou empêche toute mesure de suppression traditionnelle.

Spanish

Save record 3

Record 4 2007-05-07

English

Subject field(s)
  • System Names
  • Brush, Prairie and Forest Fires
OBS

The Canadian Forest Fire Behavior Prediction(FBP) System provides quantitative estimates of potential head fire spread rate, fuel consumption, and fire intensity, as well as fire descriptions. With the aid of an elliptical fire growth model, it gives estimates of fire area, perimeter, perimeter growth rate, and flank and back fire behavior.

French

Domaine(s)
  • Noms de systèmes
  • Incendies de végétation
OBS

La Méthode canadienne de prévision du comportement des incendies de forêt (PCI) fournit des estimations quantitatives de la vitesse de propagation de la tête des incendies, de la consommation de combustible et de l'intensité des incendies ainsi qu'une description des incendies. Au moyen d'un modèle elliptique de la propagation du feu, on produit des estimations de la superficie et du périmêtre des zones touchées et de la vitesse d'extension du périmètre ainsi qu'une indication du comportement du feu sur les flancs et l'arrière.

Spanish

Save record 4

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