Timely and Reliable Philippine Weather Forecast

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Glossary

There are currently 14 names in this directory
EARTH HUMMOCK
A small dome-shaped uplift of soil caused by the pressure of ground water.

EARTH SHADOW
Any shadow projecting into a hazy atmosphere from mountain peaks during sunrise or sunset.

EARTHLIGHT (EARTHSHINE)EARTHLIGHT (EARTHSHINE)
The faint illumination of the dark part of the moon's disk produced by sunlight reflected onto the moon from the earth's surface and atmosphere.

EARTHQUAKE
A sudden, transient motion or trembling of the earth's crust, resulting from the waves in the earth caused by faulting of the rocks or by volcanic activity.

EASTERLIES
Also known as "Easterly Waves", these are wavelike perturbations embedded in the easterly current. It brings cloudiness and precipitation in eastern coastal portions of the country and more frequent during the transition period.

EASTERLY WAVE
A migratory wave-like disturbance of the tropical easterlies. It is a wave within the broad easterly current and moves from east to west, generally more slowly than the current in which it is embedded.

EBB TIDE
The movement of a tidal current from the coast or down an estuary or tidal waterway; opposite of flood current.

EBB TIDE
The movement of a tidal current from the coast or down an estuary or tidal waterway; opposite of flood current.

EDDY
A more or less fully developed vortex in the atmosphere, constituting a local irregularity in a wind system. All winds near the earth's surface contains eddies, which at any given place produce gusts and lulls. Air containing numerous eddies is said to be turbulent.

EL NIÑO
The occurrence of an unusually warm ocean current setting south along the coast of Ecuador, so-called because it generally develops just after Christmas. In exceptional years, concurrently with a southerly shift in the tropical rain belt, the current may extend along the coast of Peru to 12°S.

EQUINOX
When a line is drawn perpendicular to the plane of the earth's axis from the sun to the earth, the sun crosses the equator and day and night everywhere are of equal length. Vernal equinox occurs around March 21 (spring in the Northern Hemisphere) and Autumnal equinox occurs around September 22 (fall in the Northern Hemisphere).

EVAPORATION
The physical process by which a liquid or solid is transformed to vapor or the gaseous state; the opposite of condensation.

EXTRATROPICAL CYCLONE
A cyclone that forms in the midlatitudes outside the tropics.

EYE OF THE STORM
A calm region at the center of a tropical cyclone or a break in the clouds marking its location.


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