What is Clear?
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility. Clear sky. In meteorology, this term is also used when the cloud cover is less than 1/8 during the day or at the observation hour.
Schedule a Demo Today
A new era is starting with fundamentally new forecasting with unprecedented precision!
Contact UsGlossary
The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.
Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...
Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...
A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...
A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...
A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...
The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...
The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...
Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...