Timely and Reliable Philippine Weather Forecast

Philippine Standard Time

Glossary

There are currently 20 names in this directory
MARCH
The variation of any meteorological element in the course of a day, year, or other interval of time.

MARITIME AIR MASS
An air mass that forms over water. It is usually humid, and may be cold or warm.

MARITIME CLIMATE
A type of climate characteristic of the ocean and oceanic islands. Its most prominent feature is a small range of minimum and maximum temperatures.

MEAN TEMPERATURE
The average of a series of temperatures taken over a period of time, such as a day or a month.

MEAN TEMPERATURE
The average of a series of temperatures taken over a period of time, such as a day or a month.

MERCURY BAROMETER
An instrument that measures atmospheric pressure by measuring the level of mercury in a column.

MESOSCALE
A large, rotating column of air that forms into a violent thunderstorm and may spawn tornadoes.

METEOR
The light phenomena which results when a meteoroid enters the Earth's atmosphere and vaporizes; colloquially known as shooting star.

METEOR SHOWER
A large concentration of falling meteors. Many meteor showers are recurring phenomena and their appearance can be predicted.

METEORITE
A meteoroid that survives its passage through the Earth's atmosphere and lands upon the Earth's surface.

METEOROID
A small particle from a comet or asteroid orbiting the Sun.

METEOROLOGY
The science of the atmosphere.

MICROBAROGRAPH
An instrument designed for recording small and rapid variations of atmospheric pressure.

MICROBAROMETER
An instrument used to show very small changes of atmospheric pressure.

MICROBURST
A downburst from a thunderstorm that is confined to a small area.

MIDLATITUDES
The areas in the northern and southern hemispheres between the tropics and the Arctic and Antarctic circles, the temperate zones.

MILLIBAR
A metric unit of atmospheric pressure equal to 1/1000 bar or 1000 dynes (unit of force equal to the force that would give a free mass of one gram an acceleration of one centimeter per second per second) per square centimeter.

MIRAGE
An apparent displacement or distortion of observed objects by abnormal atmospheric refraction. Sometimes the images are inverted, magnified, multiplied, raised, or brought nearer to the eye than the object. Refraction layers in the atmosphere often assume the appearance of fog.

MIST
A very thin fog in which the horizontal visibility is greater than 1 kilometer, or approximately 1,100 yards. Often used synonymously with drizzle or fine rain.

MONSOON
A wind that reverses its direction with the season, blowing more or less steadily from the interior of a continent toward the sea in winter, and in the opposite direction during summer.


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