Weather Glossary - Z
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'.
Witnesses saw a man being swept away after his vehicle went into floodwaters near Lismore in far north New South Wales, police say, as a heavy downpour and strong winds hit the state's coast.
After receiving record-breaking rain in June and July, parts of western Queensland have received their best August rain in nearly 20 years.
August temperature and rainfall records have been broken across Queensland today, some of which have been in place for more than a century.