Monsoon 2021: When will the monsoon rains begin over Bengaluru and different components of Karnataka?

Rain clouds hover over Vidhana Soudha in Bengaluru, Karnataka.

(Ravindra Nayak CH/VK, MMCL, Bangalore)

Wednesday, June 2: with love . is known as ‘Mungaroo Male’ In Kannada, the southwest monsoon is a lifeline for the agrarian society of Karnataka. Even Bengaluru, which is understood for its nice climate, has been dealing with rising water shortage lately. Due to this fact, it’s of utmost significance that the monsoon brings sufficient rain to Karnataka for each its economic system and welfare.

After a delayed begin of the southwest monsoon season in Kerala, the primary monsoon rains are anticipated to reach in Karnataka a bit later than traditional – by early subsequent week. Nonetheless, it isn’t a trigger for concern, as the whole state is anticipated to obtain above regular rainfall this 12 months.

Sluggish progress of monsoon within the first fortnight of June

Final month, between 21 and 27 Could, the southwest monsoon was pulled additional dramatically from the Andaman Sea in direction of the southwest Bay of Bengal by the latest Cyclone Yas. However on Could 30, the Northern Restrict of Monsoon was caught over the Maldives-Comorin area, passing over Sri Lanka and southwest and east-central Bay of Bengal.

Consequently, the India Meteorological Division (IMD) revised its earlier forecast of the onset of monsoon over Kerala from 31 Could to three June. The doubtless cause for the delayed onset is the weakening of low-level southwesterly winds because of the eastward advance of the Madden–Julian Oscillation (MJO). Naturally, there’s additionally a slight delay in its launch in the remainder of the Indian states.

The subsequent favorable part of the MJO over the Indian Ocean is more likely to happen within the third week of June. Due to this fact, until the MJO initiates extra convection within the second half of June, the rainfall over the west coast of India could stay low. Accordingly, the progress of the western finish of the Monsoon Trough is anticipated to be sluggish within the first two weeks of June.

delayed onset of monsoon

On Wednesday, June 2, the IMD has confirmed that the spatial rainfall distribution has elevated over Kerala. The westerly winds have intensified within the decrease ranges of the South Arabian Sea and the Kerala coast is overcast. These situations point out that the rain exercise will improve over Kerala within the subsequent 24 hours, successfully commencing the monsoon season on June 3.

On a median, the Southwest Monsoon arrives in Kerala on 1st June. Thereafter, the monsoon takes about 2-3 days to achieve its neighboring state of Karnataka, the place the common onset date is June 3. So, contemplating the sluggish progress of monsoon this 12 months monsoon and Kerala will begin on third June, it’s anticipated to achieve Karnataka June 7,

June 3 can be the traditional date of onset of monsoon for Bengaluru primarily based on the lengthy interval common between 1961 and 2019. This 12 months, the arrival of monsoon rains in India’s Silicon Valley is anticipated to be delayed by 3-4 days. Nevertheless, from June 4 onwards, a usually cloudy sky with one or two rain and thundershowers is anticipated.

Pre-monsoon rains to proceed

Until the monsoon rains begin over the whole Karnataka, the pre-monsoon rains will proceed over the state. These moist situations could be as a result of a mix of moist westerly winds from Arabian Sea and a cyclonic circulation over Karnataka coast.

Within the subsequent 5 days, widespread to pretty widespread rainfall has been forecast over Karnataka and its neighboring states. Whereas the distribution could fluctuate from district to district, the depth of the falls will probably be between delicate and average.

In the meantime, as per the IMD’s newest long-range monsoon forecast, south peninsular India is anticipated to obtain regular rainfall between June and September 2021. This ‘regular’ monsoon season will comply with the above common pre-monsoon season. ,

Between March 1 and Could 31, south peninsular India collectively recorded 168.7 mm of rainfall – 39% greater than its long-term common. Karnataka recorded 179.4 mm of rain, which is over 54%.


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