A gritty wind can howl for hours, and "dust devils" (funnel-shaped whirlwinds) will appear without notice.
Much like weather vanes in whirlwinds, some sensors in a vortex receive water flowing one way while those on the other side find it flows in the opposite direction.
(Greek mythology) one of the whirlwinds; son of Typhoeus and Echidna; father of Cerberus and the Chimera and the Sphinx.
