Pan India rainfall witnesses about a one third increase from the month of February to March. While the normal rains for February stand at 22 mm, in March it increases to 31 mm. It is the hilly states of both North India and Northeast India that record most amount of rainfall.
The highest contribution for both February and March in terms of Pan India rains comes from Northeast India. Herein, most amount of rainfall is recorded over Arunachal Pradesh, followed by Assam and Meghalaya as well as Nagaland, Manipur, Mizoram, Tripura (NMMT). The normal rains for Arunachal Pradesh in March stands at 180 mm, Assam and Meghalaya at 78 mm and NMMT at 77 mm.
As far as the first week of March 2018 is concerned, excessive rains were recorded for Assam and Meghalaya with the region witnessing 103 percent excess rainfall followed by Arunachal Pradesh with 67 percent excess rains. On the other hand, it was the NMMT region which was largely deficit recording a deficiency of 88 percent.
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During the second week, rains dipped in all the three regions with the deficiency being 93 percent for Arunachal Pradesh, 79 percent for NMMT and Assam and Meghalaya at 76 percent. Until March 14, while Assam and Meghalaya have witnessed normal rains, Arunachal Pradesh has remained deficient and NMMT has been largely deficient.
However, the third week of March has fared well and is expected to end on a better note as compared to the last one. In fact, the large rain deficiencies are expected to catch up by some margin in the coming days.
As far as the fourth week is concerned, it may not be as disappointing but not very good as the third in terms of rainfall activity. Both the rainfall duration and spread will be less but a couple of days could see good rains in Northeast India. Thus, in a nutshell, the month of March in terms of rain is expected to end on a satisfactory note as far as the northeastern region is concerned.
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