 EPOD - a service of USRA

The Earth Science Picture of the Day (EPOD) highlights the diverse processes
and phenomena which shape our planet and our lives. EPOD will collect and
archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.


 Arcus Cloud over the Villa Gesell Province of Buenos Aires

   July 23, 2021

    _D2_4106 Panorama

   Photographer:  Christian Grosso

   Summary Authors:  Christian Grosso;  Jim Foster

   Featured above is a panoramic view of a  severe storm that slammed
   into the Villa Gesell Province of Buenos Aires, Argentina, on February
   14, 2021. The rounded cloud formation is known as an  arcus cloud.
   In this case, since it appears to be affixed to the base of the parent
    thunderstorm, it’s called a  shelf cloud. A  roll cloud is
   detached from its parent storm. These clouds take shape along the
   leading edge of approaching thunderstorm cells as cool air from strong
    downdrafts is pushed into the warmer and moister air that’s feeding
   the storm.

   Photos details: panorama of 9 photos; Canon EOS 7D Mark II camera; 1/40
   sec. exposure; f / 4; ISO 160; 17 mm focal length; Canon EF17-40mm f /
   4L USM lens; 19:30 local time.
     * Villa Gesell, Buenos Aires, Argentina Coordinates: -37.29969,
       -57.00049

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Severe Weather Links

     *  World Severe Weather Information Center
     *  Enhanced Fujita Scale
     *  A Lightning Primer
     *  More About Thunderstorms
     *  Staying Safe Outdoors in Severe Weather
     *  NOAA Storm Prediction Center
     *  Patterns of Lightning Activity
     *  US National Weather Service

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   Earth Science Picture of the Day is a service of the  Universities
   Space Research Association.

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