sandstorm

n.

A strong wind carrying clouds of sand and dust through the air.

It is a meteorological phenomenon common in dry, arid and semi-arid regions. Such a storm is usually the result of convection currents created by intense heating of the ground.

Also called dust storm.

aurora

n.

1. A luminous atmospheric phenomenon appearing as streamers or bands of light sometimes visible in the night sky in northern or southern regions of the earth. It is thought to be caused by charged particles from the sun entering the earth's magnetic field and stimulating molecules in the atmosphere.

2. The dawn.

Aurora

n. Roman Mythology

The goddess of the dawn.