- The entire Gangetic Plain from Bihar to Western UP is seriously impacted during El Nino years with more than 7 out of 10 El Nino years resulting in deficit years.
- In the same context Odisha as a region is pretty much immune to the El Nino factor with only 2 years resulting in deficit
- Kerala Jharkhand & Chhattisgarh are regions which are impacted heavily by El Nino with 5 out of 10 years resulting in deficit
- West UP has had lesser than average rains in 9 out of 10 El Nino years.
- While Assam & Meghalaya is impacted 50% of the years when El Nino conditions existed neighboring Nagaland, Manipur Mizoram & Tripura Met Division sees a positive relationship with El Nino with 3 out of 10 El Nino years seeing excess rainfall 9 out of 10 El Nino years have seen lesser than average rains for Assam & Meghalaya.
- Evolving El Nino pretty much is a disaster for the Gangetic Plains.
Overall if one analyses the precipitation by above average and below average ranking 7 out of 10 El Nino years have resulted in lesser than average precipitation. The exception to this is Odisha where 8 out of 10 El Nino years have resulted in above average precipitation.
In 8 out of the 13 Met Divisions El Nino years have contributed to more than 50% of the deficit years with Western UP being the worst affected 8 out of 9 deficit years are a result of El Nino.