Dead fuels consisting of roundwood in the size range of 1 to 3 inches (2.5 to 7.6 cm) in diameter and very roughly the layer of litter extending from approximately three-fourths of an inch (1.9 cm) to 4 inches (10 cm) below the surface.

According to the American Meteorological Society, an instrument for measuring atmospheric pressure.

A declared ban on open air burning within a specified area, usually due to sustained high fire danger.

A number in the National Fire Danger Rating System related to potential fire incidence within a protection unit.

An offender who intentionally sets one fire.

A fire department company or a response unit, the members of which are not paid.

Relating to a harmful effect by a poisonous substance on the human body by physical contact, ingestion, or inhalation.

Average height of the surface of the sea for all stages of the tide over a 19-year period.

Legally enrolled firefighter under the fire department organization laws who devotes time and energy to community fire service without compensation other than Worker's Compensation or other similar death and injury benefits.

Temperature to which a specified parcel of air must cool, at constant pressure and water-vapor content, in order for saturation to occur. The dew point is always lower than the wet-bulb temperature, which is always lower than the dry-bulb temperature, except when the air is saturated and all three values are equal. Fog may form when temperature drops to equal the dew point.