We all have heard two terms 'western disturbance' and 'monsoon'.But most from us don't know what they exactly are and how they both differ from each other. Monsoon is a seasonal reversal of winds occurring from June to September. Monsoon occurs for temporary period but is associated with wet summers however,dry winters.On the other hand,western disturbance is extra tropical disturbance/cyclone originating from Mediterranean sea & make its journey towards Pakistan after crossing Iran, and Afghanistan.Unlike monsoon,western disturbance moisture is carried in upper atmosphere & western jet help it to transport to another place,due to which WD have less or negligible convection.But don't be confused,WD in most cases have high convection that leads to flooding rains (usually during interaction with monsoon currents). Unlike,monsoon currents which are usually seen in low levels of atmosphere,WD are usually found in mid & upper levels,in rare cases can b...
A less marked low pressure is seen over uttar Pradesh (India). Another low pressure is located in bay of Bengal and according to several models,it will intensify in to well marked low pressure area.Western disturbance (WD) as trough present over some eastern and central parts of Pakistan. •rain of light to moderate (to a bit heavy) intensity expected in northern and few central parts of pakistan during next 24-48 hours.
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