Subject: Low live and dead fuel moistures, along with persistent
drought have created the potential for
active to extreme fire behavior in Southern California.
Discussion: All of California is experiencing drought conditions.
Effects of lower than normal live and dead
fuel moistures and observed fire behavior for 2013 are the focus of
this advisory. Although some areas received
locally heavy monsoonal precipitation, it was of short duration. It
will only have a temporary effect on fuel
conditions.
Difference From Normal Conditions: Drought conditions ranging from
abnormally dry to severe exist and
are expected to persist or intensify. The entire area is deficient in
rainfall and snow pack, resulting in fuels that
are 4-8 weeks ahead of normal drying/curing rates.
Concerns to Firefighters:
Energy Release Component (ERC) values at numerous weather stations
are well above normal and
many are at record maximums. Expect increased fire intensity and
spread rates in these areas. Early
season extreme fire behavior has been observed especially in brush
fuel types. Anticipate increased
spread rates, spotting, and active night time burning.
The combination of persistent drought and record-low rainfall and
snowpack amounts has led to very
low live and dead fuel moistures. Low 1000-hour fuel moistures have
been evidenced by complete
consumption of dead fuels on recent fires. Live fuel moistures for
Chamise have already reached critical
levels of 60% or less in many areas. Expect fires to ignite easier and
spread faster. Anticipate
higher resistance to control in all fuel types.
Active fire behavior can extend well into the night and early
morning hours even with moderate RH
recovery. Already this year, Southern California has experienced large
fire activity and multiple team
deployments. It is important to be mindful of and manage fatigue for
all resources. Everyone, every
day, returns home safely.
Mitigation Measures:
Local and inbound fire personnel need to be aware that fire behavior
is exceeding normal expectations
for this time of the year. Local briefings need to be thorough and
highlight specific fire
environment conditions. These include but are not limited to local
weather forecasts, Pocket
Cards, ERC's, live and dead fuel moistures, and special fuel
conditions such as mortality,
Sudden Oak Death and frost killed brush, etc.
Suppression actions need to be based on good anchor points, escape
routes, and safety zones.
Remember LCES. Experienced lookouts are essential under these conditions.
Base all actions on current and expected behavior of the fire.
Augment initial attack resources as
incident activity dictates.
Review the most current Southern California 7-day Significant Fire
Potential along with Daily, Monthly
and Seasonal Outlooks at:
http://www.predictiveservices.nifc.gov/outlooks/outlooks.htm
Area of Concern: Area of Concern: The area of concern is the Southern
California geographic area with the
exception of 6 PSA's: Central Valley, Central Mojave, Northern
Deserts, Upper Deserts, Eastern Deserts,
and Lower Deserts. A map showing the areas of concern described in
this advisory can be found at: National
Fuel Advisories
Issued: August 21, 2013 (Note this advisory will be in effect for 14
days and will be reviewed/updated at that time.)
Example of Fire Index has nothing to to with Mid Level Smoke as drift
over Central California but with a example of KSZ058-281645-
COFFEY-
331 AM CDT WED AUG 28 2013
THE RANGELAND FIRE DANGER INDEX WILL BE IN THE LOW CATEGORY THIS
AFTERNOON.
LOW FIRE DANGER MEANS...CONTROLLED BURNS CAN BE EXECUTED WITH
REASONABLE SAFETY.
CHECK WITH LOCAL AUTHORITIES TO ENSURE BURNING IS ALLOWED BEFORE
STARTING A PLANNED BURN.
Again a Plan Burn of 37 percent humidity to control the Rim Fire if
such misunderstanding to Fire Boss go to Kansas City to gain
instruction.
--
President of The United States
Guy Ralph Perea Sr President of The United States
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