With Chennai receiving a whopping 161.9 mm of rain on Friday and widespread good showers across Tamil Nadu, the wait for northeast monsoon finally comes to an end.
The northeast monsoon mainly affects five regions of South India, namely Tamil Nadu, Kerala, coastal Andhra Pradesh, Rayalaseema and south interior Karnataka.
On Friday, other places to receive good showers in Tamil Nadu include Pamban, Nagapattinam, Tiruchirapalli, Kodaikanal and Kanyakumari.
Rain in Tamil Nadu
| Name of Place | Rainfall in millimetres |
| Chennai | 161.9 |
| Pamban | 72.4 |
| Palayamkottai | 67 |
| Nagapattinam | 45.5 |
| Tiruchirapalli | 44.9 |
| Kodaikanal | 29.2 |
| Karaikal | 28.7 |
| Coonoor | 28 |
| Kanyakumari | 23.2 |
| Madurai | 15 |
Rayalseema, Kerala and South Interior Karnataka also received some rain on Friday. Northeast Monsoon will continue to shower South India with increasing intensity, during next few days.
Northeast monsoon arrives in Tamil Nadu, heavy rain to continue for two more dayshttp://t.co/mLaIQAQUG2
— TOIChennai (@TOIChennai)October 18, 2014
Widespread rain in South India-#Chennai162mm, Pamban 72mm, Kochi 168mm, Kannur 86mm, Punalur 74mm,#Kanyakumari23mm, Mangalore 18mm. — SkymetWeather (@SkymetWeather)October 18, 2014
| Name of Region | Name of Place | Rainfall in millimetres |
| Kerala | Kochi | 167.8 |
| Kerala | Kannur | 86.2 |
| Kerala | Punalur | 74.2 |
| Kerala | Kottayam | 17.8 |
| Rayalaseema | Nellore | 7.8 |
| Rayalaseema | Tirupati | 3.4 |
| South Interior Karnataka | Mangalore | 17.9 |
| South Interior Karnataka | Madikeri | 14.6 |
According to Skymet Meteorology Division in India, Northeast Monsoon does not have any specific date of commencement unlike the Southwest Monsoon. Its normal onset date is around October 20 with an error margin of 7 days.
The low pressure area over south Sri Lankan coast has moved westwards and the easterly wave along the east coast of Peninsular India has strengthened. The trough along Sri Lanka coast extending up to 3 km and the cyclonic circulation over southeast Andaman Sea are also supporting the weather system bringing widespread rain over South India and Sri Lanka.
Taking into account the prevailing situation, Skymet declares the onset of Northeast Monsoon!
