Weather Glossary - Q

Search

QFE

QFE is calculated by adjusting the station level pressure for the difference between the barometer level and the aerodrome reference level, assuming International Standard Atmosphere(ISA) conditions. An Altimeter set to QFE will read zero when the aircraft is on the runway.

QNH

The pressure setting used by aircraft altimeters to give an indication above MSL. The QNH pressure calculation assumes a standard ICAO atmosphere.

Most AWS stations installed by the Bureau of Meteorology report pressure in QNH rather than standard MSLP. The difference between the two values can be as much as 3hPa for elevated locations.

Quasi-stationary front

A front that shows little or no horizontal movement. By convention, the term applies to a front this is moving at 5 knots or less. The slow horizontal motion combined with considerable vertical motion of the warm air, often gives rise to persistent and sometimes severe amounts of precipitation leading to local flooding.

Display Your Local Weather

Weather News

Canberra's urban forest threatened by extreme heat, drought — and drivers parking on nature strips

09:55 EDT

If you park your car on the nature strip, beware — you're killing Canberra's street trees and the ACT Government will track you down.

St George flooding expected to affect nearly 20 homes when Balonne River peaks

08:43 EDT

Nearly 20 homes in low-lying areas of St George in Queensland's southern inland are at risk of flooding when the Balonne River reaches its expected peak later today.

WA storm prompts big clean-up as Perth dashcam video shows large tree crushing car

20:25 EDT

Dramatic footage has emerged of a lucky escape on Perth's roads during a destructive storm authorities have described as the most severe to hit the city in almost a decade.