Weather Glossary - X
The portion of the electromagnetic spectrum that has a very short wave length. It has a wavelength longer than gamma rays, yet shorter than visible light. X-rays can penetrate various thicknesses of all solids, and when absorbed by a gas, can result in ionization.
An inert gas that occurs at extremely low concentration in the atmosphere.
Some $140 million will be spent on flood mitigation in Adelaide's inner-south and south-west over the next 20 years after an agreement between the State Government and five local councils.
Perth is enjoying a warm and dry end to what has otherwise wet and relatively cool summer.
Parts of Australia's eastern seaboard could receive more than a month's worth of rain in the next week, raising the risk of flooding during the opening days of autumn.