climate

Western Disturbance:
Western Disturbance mostly occur during the winter months Dec-march and cause light to moderate showers in southern part of the country while moderate to heavy showers with heavy snowfall in the northern parts of the country. These westerly waves are robbed of most of the moisture by the time they reach Pakistan.
Fog occurs during the winter season and remains for week in upper sindh central Khyber pakhtunkhwa and Punjab.
Southwest monsoon occurs in summer from the month of June till September in almost while Pakistan excluding western balochistan FATA chitral and gilgit baltistan. Monsoon rains bring much awaited relief from the scorching summer heat. These monsoon rains are quite heavy by nature and can cause significant flooding even serve flooding if they interact with westerly waves in the upper parts of the country.
Tropical cyclones and tornadoes:
Each year before the onset of monsoon that is 15 April to 15 July and also after its withdrawl that is ,15 September to 15 December there is always a distinct possibility of the cyclonic Strom to develop in the North Arabian Sea. Cyclones from in the Arabian Sea often result in strong winds and heavy rainfall in Pakistan's coastal areas. However tornadoes mostly occur during spring season that is March and April usually. It is also speculated that cycles of torando years may be correlated to the periods of reduced tropical cyclone activity.!!!!