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Brace for a wet weekend ahead

The southwest monsoon would be “active” over Bihar around this weekend.

A cyclonic circulation that formed over the Bay of Bengal on Thursday is expected to cause moderate to heavy rainfall across most parts of the state between June 29 and July 2.

Comparatively, Bihar is already in a better position regarding the monsoon rainfall this year. It is one of the six states that have received normal rainfall (+/-19 per cent from the normal) till date. The state received 102mm rainfall between June 1 and June 26 against the normal rainfall of 127mm, leaving a shortfall of 20 per cent.

Weather scientists said even this shortfall is likely to be compensated by the upcoming active phase of monsoon.

“The cyclonic circulation over the Bay of Bengal is expected to lead to heavy moisture incursion in the region, including Bihar, Jharkhand and Bengal, over the next few days. The higher level of moisture is expected to intensify the monsoon trough line passing over Bihar at present and result in moderate to heavy rainfall in the region,” said Ashish Sen, the director of India Meteorological Department, Patna.

Sen added that except southwest Bihar, the anticipated active monsoon is likely to cause heavy rainfall at a few places in east and north Bihar. “Perhaps, this would be the first active phase of monsoon after its entry in the state,” said a senior meteorologist in Patna.

Monsoon entered Bihar on June 18 through the northeastern parts of the state. Except for isolated thunderstorm activities, there has not been vigorous rainfall across the state till date.

As on Thursday, five districts had received excess monsoon rainfall, nine received normal and the remaining recorded deficient rainfall.

“Depressions and cyclonic circulations over the Bay of Bengal play an important role in the monsoon rain in Bihar as it strengthens the monsoon current in the region. Fortunately, the same has been happening this year as marked by isolated rainfall across the state. On an average, around 20 stations of 120 observatories of IMD in Bihar have recorded isolated rainfall activities on daily basis as of now,” said the meteorologist.

Patna has fared comparatively better in terms of receiving isolated thunderstorm activities. Against the normal rainfall of 88mm, the actual rain stood at 98mm till Thursday, leading to a surplus of 12 per cent.

The prevailing sultry condition is giving a tough time to the residents. The moisture in the lower level of the atmosphere during monsoon normally ranges between 70 and 90 per cent. Such high level of moisture during clear or partly cloudy skies leads to uncomfortable sultry conditions.

“Though showers have brought down the temperature slightly, the humidity factor is very irritating during monsoon. If there had been incessant rain, the conditions would have been better. One gets drenched in sweat if outside even for a couple of minutes during the daytime when it is not raining,” said Patliputra resident Harshit Kumar.

Met chief Ashish Sen said sultry conditions are common weather phenomenon in monsoon.

“Of 120 days of monsoon, around 58 are expected to be non-rainy. That is when sultry conditions prevail,” said Sen.


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