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.
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The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...
Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...
Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...
Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...
The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.
Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...
The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...
A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...