Dharamsala has booked a record of observing highest rainfall in a decade. In fact, the city has been observing extremely heavy showers since past two days.
From 08:30 am on Monday, rainfall observed for Dharamsala was 207.6 mm which is considered to be its highest 24 hours rainfall since last 10 years. During the same time frame on Sunday, the city witnessed heavy spells of 174 mm.
Main reason for these sharp spells over Dharamsala can be attributed to the development of convecting clouds.
Back to back Western Disturbances are passing over Jammu & Kashmir affecting weather of Himachal Pradesh as well. However, not all the districts of the state are affected by these heavy showers. Kullu recorded 12.3 mm rains, Nahan recorded 17 mm and 11 mm spells were observed over Chamba.
Another Western Disturbance which is present over North Pakistan and Jammu & Kashmir may give light to moderate rainfall over Himachal Pradesh and adjoining states of Uttarakhand and Jammu & Kashmir. Though this Western Disturbance is not very active, however, isolated places may receive heavy showers also.
Sometimes, cumulonimbus cloud develops over hilly regions and at times its movement is restricted due to weak upper winds and hilly terrains. Due to this, most of the water content available gets depleted over a short area resulting in hefty rainfall over a place which is exactly what happened at Dharamsala.
Sometimes this type of phenomena is also termed as cloud burst resulting in flash floods and landslides. Though for cloudburst, rate of rainfall ought to be 100 mm or more in an hour.
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Please Note: Any information picked up from here must be attributed to skymetweather.com
