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Weather Glossary - Q

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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.

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Weather News

A stormy outlook for Darwin

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Darwin is on track to reach their December average rainfall, which is already sitting at the halfway mark.

Unsettled spell for Perth

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The England cricket team may feel more at home, as conditions turn wet and very windy for the end of the third test.

'Simple' calculations predicted floodwaters in 2011, residents near Wivenhoe Dam say

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Two days before floodwaters threatened the Ipswich region, west of Brisbane, in January 2011, Darren and Brad Zanow knew they had to move their belongings to higher ground.