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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Cyclone Oma could approach southern Queensland coast from Thursday, BOM says

21:09 EDT

It is now looking more likely that Cyclone Oma could approach Brisbane and the south Queensland coast — but a lot of uncertainty remains.

What defending my home during Tasmania's bushfires taught me about disaster reporting

20:10 EDT

When a bushfire emergency warning was issued for Glen Huon and nearby areas in late January, I was in the ABC's Hobart newsroom — but not for long.

'Summer of disasters' reveals the cost of climate change for Queensland taxpayers

18:29 EDT

Queensland's "summer of disasters" is evidence of climate change and will take an economic toll on taxpayers, Premier Annastacia Palaszczuk says.