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
Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.
The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...
Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...
An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....
A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...
A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...
An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...
A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...