Unnamed Entrada sandstone rock spires with virga or evaportating rainfall at sunset in Arches National Park, Moab, Utah. (Photo by: Jon G. Fuller/VWPics/Universal Images Group via Getty Images ...

Virga are "streaks or wisps of precipitation falling from a cloud but evaporating before reaching the ground," according to the NWS. "In certain cases, shafts of virga may precede a microburst." ...