Sunday, September 6, 2020

Rainfall data of some towns in the Darjeeling- Sikkim Himalaya - AUGUST 2020

  • Darjeeling town had less rain than Kalimpong town.
  • Sikkim rainfall (all 4 districts) was much less than that of Kalimpong and Darjeeling.
The New Normal : Intense bursts of rain in overnight thundershowers

Graphs from AWS of SaveTheHills show the pattern of rainfall at Kalimpong on 05/06Aug2020 and 26/27Aug2020. In both cases, thundershowers commenced in the late evening or night and got over within a couple of hours with instantaneous rainfall intensities going upto 252mm/hr on 05Aug.

Did we have a cloud burst on 05Aug2020?
Even though we cannot prove it, I do believe we had one. Rainfall intensities reached never before levels of 252mm/hr and the event caused major damage to roads in Kalimpong and infrastructure in W Sikkim.

And it is not as if we have not had cloudbursts earlier
STH has already recorded the extreme rainfall events of AUGUST 2020 and their effects in earlier posts (see 1 and 2).

My thanks to Ms Shreya Gurung for compiling the rainfall data.

Praful Rao
Kalimpong district
Darjeeling-Sikkim HImalaya


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