As the Rim Fire continues to burn near Yosemite National Park in California on August 21st, 2013, another pyrocumulonimbus has spawned from the complex. Looking at the GOES-15 visible imagery (above, left; click image to play animation), a large plume of cloud can be seen erupting from the fire, centered approximately at 38N 120W, at about 22 UTC. The GOES-15 shortwave infrared imagery (above, right; click image to play animation), depicts a large hot spot (red pixel enhancement) at the source point of this pyroCb plume.
The GOES-15 longwave infrared imagery (above; click image to play animation) shows the cloud top brightness temperature values of the pyroCb as it is whisked off to the northwest. The pyroCb–indicated by the thin green-colored strip emanating from the source fire at ~22:30 UTC–has a brightness temperature of about -40º Celsius near its time of birth and a brightness temperature closer to -50º C as it drifts further northwest, conglomerating with another convective system.
The pyroCb event was captured by AQUA, one of the two MODIS polar-orbiting satellites. Looking at the true-color and false-color MODIS imagery (above), one can see not only impressive span of the fire (indicated by the charred-red color in the false-color imagery), but also a large plume of smoke and cloud rising from fire complex.