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Weather Glossary - Z

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Zephyr

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.

Zulu

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

Wet weather sees water allocations increase but waterlogging also on the rise

18:18 EST

South Australian River Murray irrigators have seen their second water allocation increase within a month.

Cut-off low on the cards for east coast

17:39 EST

Southeastern Australia is in for a wooly few days next week as forecast models begin to jump on the cut-off low bandwagon.

Tasmania weather: Hydro report finds cloud seeding had no effect on Derwent Valley flooding

17:29 EST

A report by Hydro Tasmania has found a cloud seeding operation carried out in June did not increase rainfall in the hours before major flooding.