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Weather Glossary - Z



A light, warm breeze. Derived from Zephryros, the personification by the ancient Greeks of the warm west wind that was thought to prevail around the time of the summer solstice.

Zonal flow

Large-scale atmospheric flow in which the east-west component (i.e., latitudinal) is dominant. The accompanying meridional (north-south) component often is weaker than normal. Compare with meridional flow. Weather systems tend to move past quickly in a zonal flow regime.


Greenwich Mean Time (GMT). Centred on zero degrees longitude. For scientific purposes this time zone is also known as Universal Time (UTC). All meteorological observations worldwide are reported using this time (for ease of comparison and computation). This timezone is commonly suffixed with 'Z'.

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Weather News

South Burnett clean-up in full swing after storm cells leave damage trail

14:28 EDT

The South Burnett Council says crews have been working around the clock to clear debris after a series of storm cells hit the area in southern Queensland.

Storms in Northern Territory and north Queensland downgrade the national mango crop for 2015/16

14:28 EDT

This season's national mango crop has been revised down 800,000 trays after storms lashed key growing regions.

Goyder's Line moving south with climate change, SA scientists say, forcing farming changes

14:01 EDT

Climate change is moving a line drawn across South Australian maps 150 years ago to indicate the northern boundary of the state's good agricultural land, scientists have said.