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 formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...
A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.
Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...
Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...
Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...
A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...
The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...
A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...
A weather watch means there is a risk of weather hazards in the near future, which could pose a threat to life/property....
The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.