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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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Storm warning for parts of southern WA extended to Perth metropolitan area

23:34 EST

An unusual weather pattern is bringing storms to parts of southern Western Australia, with residents in the Central West, Lower West, Great Southern and Central Wheatbelt districts told to brace for damaging winds and possible flash flooding.

Winter winds bring a chill to Melbourne

16:43 EST

While northern parts of the country have experienced unseasonably warm temperatures, winter is business as usual in the south.

Grantham flood inquiry: Former quarry owner says western embankment natural, not manmade

16:15 EST

The former owner of the Grantham quarry that allegedly contributed to the fatal 2011 flood has said the western embankment beside the quarry was a natural landmark and not manmade.