Sandstorm

"For the last half an hour the barometric pressure has been dropping and the wind speeds have increased significantly."

- Rodney Mckay

A sandstorm is a meteorological phenomenon common in arid and semi-arid regions, which arises when a gust front passes or when the wind force exceeds the threshold value where loose sand and dust are removed from a dry surface.

John Sheppard has been in a sandstorm on multiple occasions. One such instance being on M35-117 in an alternate future.