Heavy showers to lash Northeast region

September 22, 2014 6:30 PM |

Rain in NortheastNortheast region of the country has been witnessing heavy rain for the last few days and is expected to observe similar weather conditions for a few days more. According to Skymet Meteorology Division in India, heavy rainfall is expected over the region in the next 48 hours, particularly over Assam and Meghalaya, due to a well marked cyclonic circulation persisting over the area. As a result, we can also expect a marginal decline in the sub-divisional rainfall deficiency.

With the ongoing spell of heavy rainfall, the rain deficiency in Sub Himalayan West Bengal has dropped from 11% to 9%, while it declined from 20% to 17% in Assam and Meghalaya. In Arunachal Pradesh it droppe d from 7% to 5%and from 28% to 26% in Nagaland, Manipur, Mizoram and Tripura (NMMT).

According to Skymet, the presence of monsoon system over the west central Bay of Bengal and adjoining Odisha region and north coastal Andhra Pradesh, has given good rain over East and Northeast India during in the last four to five days. Northeast India, Sub Himalayan West Bengal and Sikkim have witnessed heavy to very heavy rainfall in last 48 hours.

On September 21, Cherrapunji recorded 175 mm of rain, making it the rainiest city in India on Sunday.  Digha received 154 mm, Behrampur -146 mm, Asansol -110 mm and Shillong 79 mm of rainfall. During the last 24 hours, Cherrapunji recorded 146 mm, Guwahati-146 mm, while Dhubri and Coochbehar received 205 mm and 231 mm of rainfall.

At present, Northeast region is witnessing its second spell of heavy rainfall. The first spell was reported during the month of August, which had occurred due to break monsoon conditions.

September is the last month of the Southwest Monsoon and from here on it starts withdrawing. However, withdrawal phase of monsoon is retrospective in nature, as there is no clear cut pattern determined for it, like in the case of its onset.

First week of September observed good showers across the country but after the maiden week, it did not see any significant monsoon system. As a result, rainfall remained subdued and national cumulative deficiency remained stagnant at 11% between September 7 and September 15 and thereafter mounted to 12% on September 18 and 19. However, the recent downpour has led to marginal decrease in cumulative deficiency, bringing it back to 11%.

 


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