Normal Rainfall stats for Sub-Himalayan West Bengal (SHWB) and Sikkim updated by IMD Gangtok.

 The Rainfall Normals for SHWB and Sikkim have been revised by IMD. The OLD one (below)

has been updated and the NEW Rainfall Normals are placed here:

Significant points to note are:

• The period of observation has decreased from 1951 to 1971 to 2000 ie a 20 year decline.
• There is an overall decrease in the TOTAL rainfall by 169.1mm ie from 2708.9mm to 2539.8mm
• There is a significant decrease (325.5mm) in the rainfall for the winter and pre-monsoon periods so we will have more drought like conditions during this period.
• There is a significant increase (254.9mm) in the rainfall for the post monsoon period.
• Rainfall during the monsoon period has also decreased by 116.7mm. 
  

Source: IMD Gangtok (Sikkim)


Praful Rao
Kalimpong district
Darjeeling-Sikkim Himalaya
savethehills@gmail.com
9475033744