MSGID: 1:317/3 6331e8d2   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
   September 26, 2022 - Snow and Burn Scars in the Sierra Nevada Mountains   
      
      Yosemite   
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      A strong storm system passing through Central California brought early   
      snowfall to the Sierra Nevada Mountains in mid-September 2022. Clouds   
      hung over the region between September 18 and 21, bringing   
      precipitation in the form of rain to the valleys and dropping a light   
      coating of snow across much of the high country.   
      
      The Moderate Resolution Imaging Spectroradiometer (MODIS) on board   
      NASA’s Terra satellite acquired a false-color image of a section of the   
      Sierra Nevada Mountains topped with fresh snowfall on September 22.   
      Patches of snow covers the ridges between Lake Tahoe (north) and south   
      of Mono Lake (south). Large burn scars (areas of damage left behind   
      after a fire) are also visible west of Lake Tahoe and smaller burn   
      scars are scattered throughout the mountains.   
      
      In this type of false-color image, visible and infrared light (MODIS   
      bands 7,2,1) are combined to help highlight certain features, such as   
      snow or burn scars. Vegetation appears bright green, water looks deep   
      blue, snow and ice appear bright electric blue, cloud may appear white   
      or, if they are cold and contain ice crystals, may carry a tint of   
      bright electric blue, and open land can be colored various shades of   
      tan. Burn scars may vary in color, ranging from brick red to tan to   
      black, depending on completeness and heat of burn, soil conditions, and   
      how long ago the fire occurred.   
      
      The two largest burn scars in this image were caused by the Mosquito   
      Fire and the Caldor Fire. The Caldor Fire burned 221,835 acres in the   
      Eldorado National Forest and other portions of the Sierra Nevada in   
      California between August 14, 2021, and October 21, 2021. It heavily   
      damaged the town of Grizzly Flats, in El Dorado County, including   
      destroying about 500 structures in that location. In total, the fire   
      destroyed more than 1,000 buildings and damaged at least 81 more. The   
      massive rectangular burn scar sits southwest of Lake Tahoe.   
      
      The Mosquito Fire ignited September 6, 2022, and as of September 25 is   
      still an active fire that is burning east of Foresthill, California,   
      predominantly on the Tahoe and Eldorado National Forest in Placer and   
      El Dorado Counties. Numerous areas and communities were under   
      evacuation orders and warnings until September 21, when all orders were   
      lifted. Cooler weather and precipitation between September 18 and 21   
      not only dropped snow in the high country, but also helped firefighting   
      efforts, at least temporarily. As of September 25, the Mosquito Fire   
      has burned 76,781 acres. The funnel-shaped burn scar sits in green   
      forests northwest of Lake Tahoe.   
      
      Image Facts   
      Satellite:  Terra   
      Date Acquired: 9/22/2022   
      Resolutions:  1km (238.4 KB),  500m (607.9 KB),  250m (343.2   
      KB)   
      Bands Used: 7,2,1   
      Image Credit: MODIS Land Rapid Response Team, NASA GSFC   
      
      
      
   https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2022-09-26   
       
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