Most parts of Northeast India have been receiving light rain for the past two days. In the last 24 hours from 8:30 am on Saturday, Pasighat received 5.6 mm of rain, Tinsukia 5 mm, Aizawl 4.1 mm, and Lengpui 3.8 mm of rain.
According to Skymet Meteorology Division in India, fairly widespread rain and thundershowers will continue over Assam, Meghalaya, Manipur, Mizoram, Tripura, and Nagaland. However, rainfall activity over Arunachal Pradesh will be subdued.
After 48 hours, rain over Assam and Meghalaya will significantly reduce. The NMMT (Nagaland, Manipur, Mizoram and Tripura) region will receive good rainfall. These rains will be attributed to the low-pressure area, which will move inland. Moist southerly winds will again start penetrating into the northeastern states leading to good rainfall in Northeast India, particularly the NMMT region.
Updated on September 12, 2015: Light Monsoon rains in Northeast India
As per the forecast, Northeast India continues to receive rain on account of the southerly winds flowing from the weather system over the Bay of Bengal. Due to these winds light rain is expected to continue over Assam, Meghalaya and other parts of the region.
In the last 24 hours from 8:30 am on Friday, Dhubri received 7 mm of rain, Pasighat observed 2 mm rain, Guwahati recorded 31 mm of rainfall, and Tinsukia 5 mm of rainfall. Shillong 20 mm of rain, Kohima 4 mm of rain and Agartala 20 mm of rain. Scattered good rainfall accompanied with thundershower activities may continue for next 24 hours in the region.
Updated on September 11, 2015: Monsoon rains in Northeast India to pick up again
During the month of June, Northeast India received very good Monsoon showers. At the end of the month, the region observed a surplus of 1 per cent. However, in July and August, the northeastern states in India observed slightly below normal rains, which led to increase in rainfall deficiency for the region. The NMMT (Nagaland, Mizoram, Manipur, and Tripura) region was 31 per cent rain deficit by the end of June.
As on September 10, the region observed a rainfall deficit of 30 per cent. On the other hand, Assam, Meghalaya, Arunachal Pradesh, Sub-Himalayan West Bengal and Sikkim received good rains. The average rainfall amount during Monsoon for each meteorological sub-division in Northeast India is more than 1500 mm. This clearly indicates that the normal rainfall for Northeast India is higher as compared to the other regions of the country.
The Assam region observes severe flooding almost every year during Monsoon. Only a few days back Assam was reeling under severe floods. However, the situation is under control now. The area has been observing subdued rainfall activity since last 2 to 3 days. However, rainfall has picked up in Northeast India in the last 24 hours.
In the last 24 hours from 8:30 am on Thursday, Silchar received a whopping 129 mm of rain, North Lakhimpur recorded 41 mm of rainfall, and Pasighat observed 41 mm rain. Also, Jorhat and Tezpur recorded 37 mm and 12 mm of rainfall, respectively. Light to moderate rainfall will continue for the next 48 hours. Thereafter, the rainfall intensity will increase gradually. However, the intensity of rainfall will not be as much to cause another flood like situation in the region.
Image Credit: ourhydrosphere.com