Possible PyroCb in Northern Alberta

A fire in Northern Alberta (58 N, 113 W) began showing signs of becoming a PyroCb late in the date on 3 June 2015 into the morning of 4 June. This fire is among the 39 wildfire currently burning in the region, spurring a providence wide fire ban. GOES 15 detected this occurrence at visible (.63 μm) and IR (3.9 μm) channels shown below (below; click in animation to play).

GOES-15 0.63 μm visible (left) and 3.9 μm shortwave IR (right) images (click to animate)

GOES-15 0.63 μm visible (left) and 3.9 μm shortwave IR (right) images (click to animate)

However, from the IR image at 10.7 μm (below; click in animation to play) there is no sign of clouds that have developed enough. The clouds produced from this wildfire did not grow enough in the atmosphere to acquire a brightness temperature less than -400C which is indicative of a PyroCb.

GOES-15 10.7 μm IR image (click to animate)

GOES-15 10.7 μm IR image (click to animate)

 

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