Virga often appears in streaks or shafts extending from the bottoms of clouds. You often see virga over a desert, where low humidity and high temperatures can cause rain to evaporate shortly after being released by clouds. Or you might see virga at high altitudes; in fact, the precipitation often starts out in the form of ice crystals. Virga is commonly seen in the U.S. West and above the Canadian Prairies, in the Middle East, Australia and North Africa. At some northerly latitudes, too – as in the photos from Sweden on this page – virga sometimes paints the sky above.
The word virga is derived from Latin meaning “twig” or “branch”.
It’s an especially dramatic sight at sunrise or sunset.
The photos on this page are from EarthSky friends. Enjoy, and share your pics with us on Facebook or submit them here.
Enjoying EarthSky? Sign up for our free daily newsletter today!
Bottom line: Virga is rain that evaporates before it reaches the ground. It appears in streaks or shafts extending from the bottoms of clouds. You often see virga over a desert, where low humidity and high temperatures can cause rain to evaporate high in the sky.
from EarthSky http://ift.tt/1HpdJsa
Virga often appears in streaks or shafts extending from the bottoms of clouds. You often see virga over a desert, where low humidity and high temperatures can cause rain to evaporate shortly after being released by clouds. Or you might see virga at high altitudes; in fact, the precipitation often starts out in the form of ice crystals. Virga is commonly seen in the U.S. West and above the Canadian Prairies, in the Middle East, Australia and North Africa. At some northerly latitudes, too – as in the photos from Sweden on this page – virga sometimes paints the sky above.
The word virga is derived from Latin meaning “twig” or “branch”.
It’s an especially dramatic sight at sunrise or sunset.
The photos on this page are from EarthSky friends. Enjoy, and share your pics with us on Facebook or submit them here.
Enjoying EarthSky? Sign up for our free daily newsletter today!
Bottom line: Virga is rain that evaporates before it reaches the ground. It appears in streaks or shafts extending from the bottoms of clouds. You often see virga over a desert, where low humidity and high temperatures can cause rain to evaporate high in the sky.
from EarthSky http://ift.tt/1HpdJsa
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