The NASA Worldview image above shows that there are two clear streams of smoke that originate from Eastern Australia. Reuters has reported that these are two bush fires that may have both been started either accidentally or maliciously by young teenagers in the area. Due to Australia having a dry season it has become easy for these small bush fires to grow into massive fires that release large amounts of smoke. The NASA Worldview image below shows that there are clear trails of particulate matter being released by the smoke.
The NRL/Monterey Aerosol below shows that the smoke concentration in the Eastern Australian region to reach more than 512 ug/m^3. These fires are taking place mostly in Queensland Australia.
This image taken by the NASA/NOAA’s Suomi NPP satellite shows the Walker fire that is taking place in California. INCIWEB reports that the fire started on September 4th and has burned over 47 thousand acres with only 12 percent of it contained so far. The smoke has not spread over such a large area compared to the agricultural fires taking place in the South-east United States, but the smoke is much more concentrated as shown by the dark red spot in the NOAA HMS image below.
The NRL/Monterey Aerosol image below shows that the smoke is concentrated on one area, yet is affecting a large portion of the Western United States.