parts of a fire
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point of origin, head, flank, rear, perimeter, fingers, pockets, island, spot fire
foehn winds
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strong, dry winds caused by the compression of air as it flowes down the
lee side of a mountain range.
-can persists for days and frequently reach speeds of 40-60mph.
,changes in air temperature near the surface of the earth are caused by
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changing seasons
alternations of night and day
migrating weather systems
Stability is ___________ related to the temperature distribution of the atmosphere.
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directly
backing fire
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that portion of the fire with slower rates of fire spread and
lower intensity, normally moving into the wind and/or down slope. also
called heel fire
______ is the primary weather element that affects fuel moisture content and the
resulting flammability of wildland fuels
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, moisture
fuel moisture
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the amount of water in a fuel, expressed as a percentage of the oven-dry
weight of that fuel
dry fuels
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fuels that have low moisture content because of prolonged exposure to
sunshine, dry winds, drought, or low relative humidity
down-valley wind characteristics
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as the valley loses solar heating, the air in the valley cools
-greatest speed occurs after midnight
-speeds 5-10mph
land breeze
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a lighttime breeze which originates over the relatively cool land.
-wind speeds between 3-10mph
sea breeze
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a daytime breeze in which cooler air from high pressure over the costal
waters move onshore to replace heated air rising above the warmer land
mass
-wind speeds 10-20mph
1-hour fuels
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0-1/4 inch in diameter
General wind
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large scale upper level winds caused by high and low pressure systems
Give this one a try later!
point of origin, head, flank, rear, perimeter, fingers, pockets, island, spot fire
foehn winds
Give this one a try later!
strong, dry winds caused by the compression of air as it flowes down the
lee side of a mountain range.
-can persists for days and frequently reach speeds of 40-60mph.
,changes in air temperature near the surface of the earth are caused by
Give this one a try later!
changing seasons
alternations of night and day
migrating weather systems
Stability is ___________ related to the temperature distribution of the atmosphere.
Give this one a try later!
directly
backing fire
Give this one a try later!
that portion of the fire with slower rates of fire spread and
lower intensity, normally moving into the wind and/or down slope. also
called heel fire
______ is the primary weather element that affects fuel moisture content and the
resulting flammability of wildland fuels
Give this one a try later!
, moisture
fuel moisture
Give this one a try later!
the amount of water in a fuel, expressed as a percentage of the oven-dry
weight of that fuel
dry fuels
Give this one a try later!
fuels that have low moisture content because of prolonged exposure to
sunshine, dry winds, drought, or low relative humidity
down-valley wind characteristics
Give this one a try later!
as the valley loses solar heating, the air in the valley cools
-greatest speed occurs after midnight
-speeds 5-10mph
land breeze
, Give this one a try later!
a lighttime breeze which originates over the relatively cool land.
-wind speeds between 3-10mph
sea breeze
Give this one a try later!
a daytime breeze in which cooler air from high pressure over the costal
waters move onshore to replace heated air rising above the warmer land
mass
-wind speeds 10-20mph
1-hour fuels
Give this one a try later!
0-1/4 inch in diameter
General wind
Give this one a try later!
large scale upper level winds caused by high and low pressure systems
