The next formal update for the Fork Fire will be on Wednesday September 30th, unless there are substantial changes in conditions on the fire.
The Fork Fire started in the Crystal Basin near Gerle Creek under critical fire weather conditions. Driven by east winds gusting 30-50 miles per hour, the fire grew rapidly to the west. It is burning in the Rubicon River drainage and the 2014 King Fire burn scar. The Rubicon canyon is in an extremely steep and remote area which makes firefighting difficult. This area of the King Fire had burned at high severity with nearly 100% tree mortality, leaving large snag patches of fire killed trees. The standing snags are a significant safety hazard, especially in strong winds. There is also a high concentration of dead and down trees creating a heavy fuel load, as well as dense post-fire regrowth of 4-6 foot tall brush.
|Current as of|
|Date of Origin||Tuesday September 08th, 2020 approx. 11:15 AM|
|Location||Crystal Basin/Gerle Creek, 15 Miles NE of Pollock Pines|
|Incident Commander||Matt Brown|
|Coordinates||38.99 latitude, -120.394 longitude|
|Percent of Perimeter Contained||70%|
Fire is burning in King Fire scar, where fuels consist of heavy concentrations of standing snags and 4-6 foot brush.
Minimal creeping, backing and smoldering observed.
Establish direct control lines where possible, utilizing indirect control line where direct control line is not feasible. Hold and monitor existing lines along current perimeter. Provide structure defense to residential structures in the threatened communities. Protect critical utility infrastructure and values at risk.
|Projected Incident Activity|
Sky and weather will be sunny. Max temperatures between 81-86.
Min humidity at 12-17 percent. Wind on the slopes and valleys with east winds up to 7 mph
shifting to the west up to 8 mph late in the morning.
Ridgetop winds will be east 6 to 8 mph shifting to the west 5 to 9 mph late in the morning.
Transport winds, East 6 to 8 mph shifting to the west 5 to 9 mph late in the morning.
Very warm and dry conditions will continue the next several days with poor overnight humidity recovery. Humidity values for tomorrow are expected to be quite low, with poor recovery expected for the overnight hours. The combination of these ingredients will lead to critical fire weather conditions.