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Monsoon 2019: Monsoon finally hits the right chord, as low pressure in Bay forms

June 20, 2019 12:35 PM |

Monsoon in Bay

Monsoon arrived before time over the Bay islands, but when it came to the mainland, Monsoon did see quite a delayed arrival, reaching Kerala seven days after its normal date. Since then, the progress of Monsoon has been as snow as a snail and the current has been very weak and sluggish.

Monsoon systems form on either side of coastline. However, the systems that form in the Bay of Bengal are more beneficial, as they lead to Monsoon advancement and are not very far away from the coast. On the other hand, the systems in the Arabian Sea give temporary rains and relief and in fact, cause more damage than they do good, as they move away taking the moisture and rainfall away.

Low Pressure in Bay of Bengal

Now, after a sluggish start, daily rain deficiencies, and the cumulative deficiency reaching to a whopping 43 percent, Monsoon is finally hitting the right chord.

The Cyclonic Circulation which had formed in the Bay of Bengal has become more organized as it gathered strength in the past 24 hours. Moreover, cloud configuration and satellite imagery suggest the system has already become a low pressure area and lies in the northern parts of Bay of Bengal off Odisha and West Bengal Coast.

Movement of System

This system is likely to have some movement and cross over being partly over land and partly over sea by tomorrow as a Low Pressure Area. The system may even become a well marked during this time.

Subsequently, around June 22, the system will move towards the southern parts of Chhattisgarh, Vidarbha adjoining east Madhya Pradesh. Thereafter, around June 23, the system will move towards Madhya Maharashtra, and finally it will move to  Konkan and Goa region and adjoining Arabian Sea, wherein the system will undergo a weakening process.

Rainfall due to the Low Pressure in Bay

With the low pressure persisting for a while, rains will be seen over the states of Odisha, and Andhra Pradesh, Chhattisgarh, Maharashtra, Telangana, East Madhya Pradesh, North Interior Karnataka and Konkan and Goa including the city of Mumbai.

Moreover, rains will also enhance over the West Coast areas of Kerala and Coastal Karnataka as the systems in Bay also increase rainfall activity on the other side.

Advancement of Monsoon

Monsoon has not made a headway as it usually does until this time, as while the coastal parts are seeing rains, interiors have not seen any rainfall activities. However, this system will not only bring rains but will also result in Monsoon arrival into interiors and will cover Telangana including Hyderabad, rest of Karnataka including Bengaluru, Maharashtra, along with Konkan region including Mumbai, as well as Andhra Pradesh including Vizag, Odisha including Bhubaneswar, and West Bengal including Kolkata.

Bihar and Jharkhand will have to wait a few more days as another system is trailing this system, which will keep the Monsoon current flowing. Moreover, this system will set the grounds for Monsoon advancement over Bihar and Jharkhand, East Uttar Pradesh, setting up the easterly currents over the Indo Gangetic West Bengal which are necessary for arrival of Monsoon.

Rainfall deficiencies to improve

The rains in view of Low Pressure area will also reduce the rain deficiencies. Barring a few pockets, all of the states where Monsoon usually makes an onset until now are deficient including Kerala, Karnataka, Andhra Pradesh, Telangana, Tamil Nadu, Odisha, Konkan and Goa with some places seeing deficient figures above 50 percent. However, now, with these rains, deficient figures will also improve to quite an extent.

Image Credit: HinduBusinessLine

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