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
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...
A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.
Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...
Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...
A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...
The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.
A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...
The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...
The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...