Timely and Reliable Philippine Weather Forecast

Philippine Standard Time

Glossary

There are currently 9 names in this directory
VANE
A device that shows which way the wind blows; also called weather vane or wind vane.

VAPOR PRESSURE
The pressure exerted by a vapor when it is confined in space. In meteorology vapor pressure refers exclusively to the pressure of water vapor. When several gases or vapors are mixed together in the same space each one exerts the same pressure as it would if the others were not present; the vapor pressure is that part of the total atmospheric pressure which is due to water vapor.

VARIABILITY
Inter-diurnal variability is the average difference between successive daily averages of a meteorological element.

VEERING WINDS
Winds that shift in a clockwise direction, a shift caused by a high-pressure system.

VERNIER
An auxiliary scale for estimating fractions of a scale division when the reading to the nearest whole division on the main scale is not sufficiently accurate.

VERTEX
The point of re-curvature, about 20° latitude.

VIRGA
Water droplets or ice crystals that fall from high clouds but evaporate before hitting the ground.

VISIBILITY
The maximum distance at which one can see and identify objects.

VORTEX
The central area of light winds and calms, or within the ring of hurricane force winds.


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