Timely and Reliable Philippine Weather Forecast

Philippine Standard Time

Glossary

There are currently 12 names in this directory
HABAGAT
Local word for "Southwest Monsoon", it affects the country from July to September, is very warm and humid, occurs when warm moist air flows over the country from the southwest direction, is characterized by heavy rainfall that may last for a week. It brings the rainy season to the western portion of the country.

HAIL
Chunks of ice that form in layers in the updrafts of thunderstorms.

HALO
A ring or arc of light around the sun or moon caused by the refraction of light through ice crystals in the atmosphere.

HAZE
Particles of fine dust suspended in the air that produce limited visibility.

HEAT INDEX
This index is a measure of the contribution that high humidity makes with abnormally high temperatures in reducing the body's ability to cool itself.

HEAT LIGHTNING
Lightning that can be seen, but too far away to be heard.

HEAT WAVE
A period of abnormally high temperature. It is sometimes defined as a period of three or more consecutive days during which the maximum temperature is 32°C (90°F) or over.

HUMIDITY
The degree to which the air is charged with water vapor. This may be expressed as absolute humidity, relative humidity, and specific humidity.

HURRICANE
A tropical cyclone in the western Atlantic that has sustained wind speeds of 74 miles per hour (119 kilometers per hour) or greater.

HYDROMETEOR
A generic term for weather phenomena that mostly depend upon modifications in the condition of the water vapor in the atmosphere. Examples are fog, rain and hail.

HYDROSPHERE
The Earth's water.

HYGROMETER
An instrument that measures the water vapor content of the air.


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