Cloud Base

The cloud base (or the base of the cloud) is the lowest altitude of the visible portion of the cloud. It is traditionally expressed either in m or feet above mean sea level (or planetary surface), or as the corresponding pressure level in hectopascal (hPa, equivalent to millibar).

Read more about Cloud Base:  Measurement, Weather and Climate Relevance

Famous quotes containing the words cloud and/or base:

    “A brush had left a crooked stroke
    Of what was either cloud or smoke
    From north to south across the blue;
    A piercing little star was through.”
    —Robert Frost (1874–1963)

    “Your top has sunk too low,
    Your base has spread too wide,
    For you to roll one stone
    Down if you tried.”
    —Robert Frost (1874–1963)