Associated Weather
In the dry sector west of the dry line, clear skies are the rule due to the dryness of the air mass sweeping off the Rocky mountains in North America, and the Aravalli range in India. If winds are strong enough, dust storms can develop. Cumulus clouds are common east of the dry line in the moist sector, though they are taller with greater development along the dry line itself. The moist sector is normally capped with a lid of an elevated mixed drier layer which represents subsidence from aloft as the surface air cools and contracts at night. The same process promotes the development of a low level jet to the east of the dryline. During the daytime, if heating and/or convergence are sufficient, the cap can be broken, resulting in convective clouds.
Read more about this topic: Dry Line
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—Henry David Thoreau (1817–1862)