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A recent wildfire Recent wildfires in Jasper, Alberta, Canada , which began on 07/24/24, highlighted the impact of cloud on active fire detections. As of 08/06/24, the wildfire had consumed 34,000 hectares of Jasper, including much of the downtown area. While some limited detected fire activity was Active fire detections were captured by MODIS and VIIRS on 07/23/24, and to the south/southeast of Jasper on the daytime observations between 12:30PM and 3:00PM PDT on 07/24/24. However, no additional detections were captured for several consecutive days following these initial detections. FIRMS received multiple questions from users about the wildfire in Jasper and, therefore, this blog explains the reasons for the limited active fire detections during this period.  

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