A shortfall in rain in Tamil Nadu Northern districts
Posted on: 12/Dec/2018 1:04:22 PM
There has been a total shortage of rainfall from the northeast monsoon rainy season in the northern districts of Tamil Nadu. In the Chennai Metro City, the shortfall is 52%.
Northeast monsoon rainy season, which is an import feature, especially for the state of Tamil Nadu, as a much-needed source of water commenced in Tamil Nadu on 1st November. Though the onset of the northeast monsoon rain season was delayed by 10 days, the weather centre had estimated that there would be sufficient widespread rains in the state.
In this scenario, due to the cyclone Gaja, the formation of depression zones and low-pressure zones, there were widespread rains throughout the state. However, there was a shortfall in the average expected rainfall in the northern districts leading to a dip in the groundwater level.
As per yesterday’s data, the statistics of shortage of rainfall in percentage (%) is as below: Dharmapuri – 57, Krishnagiri -55, Chennai – 52, Kanchipuram – 31, Thiruvallur – 37, Vellore – 44, Salem – 48, Perambalur – 38, Namakkal – 35, and Karur – 49.
As per average expected rainfall, the Chennai Metro City should have received 72 cm rainfall. However, it has been only 34 cm. Similarly, in Kanchipuram district, it is only 41 cm rainfall as compared to the expected average 59 cm. In Thiruvallur district, it is only 34 cm as compared to the expected 54 cm.
Meanwhile, as another depression is to formed shortly over the Bay of Bengal, it is expected that there will be additional rains in the districts of Chennai, Thiruvallur, Kanchipuram, and Vellore districts.
