Most, if not all the landslides in the Darjeeling-Sikkim Himalayas are rain induced, so keeping a track of the amount of rainfall & rainfall intensities is very much a part of our role.
2010 was a year of deficient rainfall in our area and as such, as far as landslides are concerned - it was a good year.
Rather alarmingly though, we seem to be following this trend in 2011 as well and thus far, rainfall has again been deficient in most places in this area. The deviations from normals for some of towns in this region is given below :-
Rather alarmingly though, we seem to be following this trend in 2011 as well and thus far, rainfall has again been deficient in most places in this area. The deviations from normals for some of towns in this region is given below :-
Rainfall data upto 14Jun2011 | |||
Normal | Actual | %departure | |
CoochBehar | 299.3 | 150.5 | -050.0 |
Bagdogra | 205.6 | 209.1 | 002.0 |
Darjeeling | 196.6 | 64.2 | -067.0 |
Kalimpong | 147.7 | 40.8 | -072.0 |
Jalpaiguri | 242.4 | 152.8 | -037.0 |
Gangtok | 326.2 | 293.9 | -010.0 |
Pedong | 186.1 | 137.0 | -026.0 |
(Source I Met D, Sikkim)
And for those interested, I have placed two charts which explain what the Met pundits mean when they talk about rainfall intensities :-
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