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A rain shadow is an area of significantly reduced rainfall behind a mountainous region, on the side facing away from prevailing winds, known as its leeward side. Evaporated moisture from water bodies (such as oceans and large lakes ) is carried by the prevailing onshore breezes towards the drier and hotter inland areas.
Föhn cloud over the Crackenback Range, near Jindabyne. The southeast Australian foehn is a westerly foehn wind and a rain shadow effect that usually occurs on the coastal plain of southern New South Wales, and as well as in southeastern Victoria and eastern Tasmania, on the leeward side of the Great Dividing Range.
Precipitation is measured using a rain gauge, and more recently remote sensing techniques such as a weather radar. When classified according to the rate of precipitation, rain can be divided into categories. Light rain describes rainfall which falls at a rate of between a trace and 2.5 millimetres (0.098 in) per hour. Moderate rain describes ...
The PA news agency’s photographers provided unrivalled coverage of the world of politics this year as these first rate images show. In Pictures: Rain-soaked Rishi and wide-eyed Wes in year’s ...
Shadow as a term is often used for any occlusion or blockage, not just those with respect to light. For example, a rain shadow is a dry area, which with respect to the prevailing wind direction, is beyond a mountain range; the elevated terrain impedes rainclouds from entering the dry
This is typically due to a rain shadow effect that cuts off ITCZ-triggered summer precipitation in a tropical area while winter precipitation remains sufficient to preclude a hot semi-arid climate (BSh) and temperatures in the summer months are warm enough to preclude a Mediterranean climate (Csa/Csb) classification.
A rain shadow is a dry area on the leeward side of a mountainous area (away from the wind). The mountains block the passage of rain-producing weather systems and cast a "shadow" of dryness behind them. Wind and moist air are drawn by the prevailing winds towards the top of the mountains, condensing and precipitating before it crosses the top.
The entire island of Kaho'olawe is in the rain shadow of Maui; North East England is in the eastern rain shadow of the Pennines, due to Britain's prevailing wind coming from the South West. This explains the significant differences between the rainfall between North West and North East England.