Southwest Monsoon 2017 has made finally made timely onset over Kerala on May 30. Simultaneously, Monsoon has also covered parts of Northeast India.
Severe Cyclone Mora has played an important role in the arrival of Monsoon over Indian region.
The Northern Limit of Monsoon (NLM) is now passing through Latitude 10°N/ Longitude 60°E, Latitude 12°N/ Longitude 70°E, Kochi, Tondi, Latitude 14°N / Longitude 87°E, Latitude 17°N / Longitude 90°E, Latitude 20°N / Longitude 91°E, Aijwal, Kohima and Deomali.
All the major criteria for the arrival of Monsoon including rainfall, speed and direction of wind, and depth of westerlies have been met. OLR (Outgoing Longwave Radiation) is also below 200 Wm-2 as on May 29.
Kerala has been witnessing on and off rains for more than last one week. However, rains have picked up pace significantly during the last 48 hours and several places have recorded moderate to heavy rains with isolated very heavy showers.
The table below will give you a fair idea about the ongoing rainfall across the 14 pre-decided stations that dictate the onset of Monsoon over Indian mainland. The rainfall criteria for Monsoon is met when 2.5 mm of rain is recorded for two consecutive days in over 60 percent of these stations.
Monsoon forecast
According to Skymet Weather, weather models are indicating that the progress of Monsoon will be satisfactory in the coming days and it will move ahead as per the schedule.
We expect Monsoon rains to now increase over Kerala, Karnataka and Interior Tamil Nadu. However, weather models are indicating that rains will remain subdued over Coastal Tamil Nadu.
We expect Monsoon to advance further between June 5 and June 10. It is likely to cover entire Kerala, Tamil Nadu, parts of Madhya Maharashtra and Konkan and Goa, Andhra Pradesh and remaining parts of northeastern states and some parts of West Bengal.
Monsoon 2017 is also likely to make onset over Mumbai and Kolkata during this time. Following map shows the normal date for the onset of Monsoon over parts of India.
Image credit: HT
Any information taken from here should be credited to skymetweather.com
