FAR VIEW PRESCRIBED FIRE
Fire Monitoring Report
Date: 11/03/01
Monitors: James Roberts
Fuel Model/Vegetation Type: Model 6; Mountain Brush (Gambel oak/serviceberry/sagebrush/grass)
Observation Location(s) - Aerial: None - Ground: Far View
Visitor Center and various locations in the fire perimeter.
Weather:
Cloud cover was 5% high clouds in the morning, decreased to nearly clear
at 1230, then increased to a maximum of 70% at 1630. Temperatures varied
from 54-65 oF and RH ranged from 23-31% between 0930 and 1630. Minimum
RH readings occurred at 1200 and 1400. Mid-flame winds were light for
most of the day (1-3, gusting to 6 mph) and were predominantly from the
south southwest. Occasional gusts up to 13 mph from the east were observed.
Fire Activity:
In Burn Unit 2, fire behavior was moderate to intense throughout the entire
burning period. Mostly backing fires were witnessed, except when wind
gusts produced heading fires. Spread rates were mostly 2-10 chains/hour
with flame lengths of 3-18" in grass and 2-10' in brush, and reached
60 chains/hr with flame lengths of 2-3' in grass and 10-20' during the
strongest wind gusts. Flame lengths of 50-80' were observed during the
occasional torching of pinyon and juniper trees. Solid ground fuels were
mostly consumed.
In Burn Unit 1, lighter fuels resulted
in lower burn intensities. Spread rates of 2-10 chains/hr were observed
in grass, and reached 5-15 chains/hr in shrub clumps. Runs were short-lived
and patchy due to sparse fuels over much of the burn unit and increasing
relative humidities later in the day.
Smoke:
Throughout most of the day, smoke production was light to moderate on
Burn Unit 2, and drifted to the northwest. Heavy smoke was observed when
large oak thickets burned, forming a plume that rose to at least 1500
feet. Dispersal was generally good throughout the burning period. Fuels
were lighter on Burn Unit 1, producing light smoke that drifted to the
northwest and rose no higher than 200 feet. Around 1600, as upslope winds
began to shift downslope, dispersal started to become poor. After 1700,
downslope winds began to carry smoke into Soda Canyon from all parts of
the burn.
Special Concerns or Significant
Events:
None.
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