GUWAHATI: The India Meteorological Department has forecasted isolated heavy rainfall over Assam and Meghalaya on 11 & 12 May.
Further isolated to scattered rain/thundershower over rest parts of east India during next 5 days including Tripura on 11 May; Sub Himalayan West Bengal & Sikkim on 11 & 12 May and over Gangetic West Bengal from 11 to 13 May.
In view of these predictions, the IMD has issued a yellow watch over the aforementioned northeastern states on Tuesday and Wednesday, and across the eastern states from Tuesday to Friday. The advisory urges residents to 'be aware' of the local weather situation.
Northeast India has witnessed a particularly wet May this year, having experienced intense rainfall activity roughly over the past two weeks. However, this wet May arrived at the back of a dryer-than-normal April, during which East and Northeast India collectively received 64.2 mm rainfall—almost half of what these regions receive on average (124.8 mm) in the month of April.
Meanwhile, since the beginning of the pre-monsoon season on March 1, the northeastern states of Arunachal Pradesh (312.5 mm), Assam (161 mm), Manipur (148.8 mm) and Nagaland (119.7 mm) have all registered 'deficit' rains as compared to their respective long-term rainfall figures, whereas Mizoram (89.7 mm) and Tripura (134.6 mm) have recorded 'large deficit' precipitation.
On the flip side, Meghalaya (366.7 mm) and West Bengal (111.5 mm) have received 'normal' rainfall so far this season, whereas Sikkim, at 504.1 mm, has recorded a 'large excess'.