This story is from July 7, 2020

58% surplus rain in Bihar

58% surplus rain in Bihar
Dark clouds hover over Patna on Monday
PATNA: The timely onset of southwest monsoon after more than a decade and bumper rainfall since then has led to 58% surplus rainfall in Bihar till Monday. Weathermen have also predicted rainfall and thunderstorm in all 38 districts till July 10. Warning for lightning has also been issued till July 8.
The rain-bearing winds made their onset in Bihar through northeastern districts on June 13, contrary to the past few years when it used to happen around June 17-20.
As per the data available with India Meteorological Department (IMD), Bihar has received 363.8mm rainfall from June 1 till Monday against the normal rainfall of 230.4mm during the same period, leading to a surplus of 58%.
In fact, 22 out of the 38 districts in state have received large excess (60% and above normal) rainfall and another 10 districts got excess rainfall (between 20-59% above normal), leaving three districts with moral rainfall (+/-19% of normal rainfall) and three districts receiving deficient rainfall (20% less than normal).
Deliberating on the factors responsible for enhanced rainfall activity in Bihar, a meteorologist at Patna Meteorological Centre said: “Trough line-elongated low-pressure area formed frequently either crossing through Bihar or Jharkhand. Besides, cyclonic circulations also formed frequently over east Uttar Pradesh and neighbourhood. Such weather factors supported monsoon rainfall in Bihar.”
The southwest monsoon continues to remain active over the state. The Patna weather office stated that light to moderate rainfall occurred at most places over southeast parts of Bihar and at many places over northeast and the few other places during the last 24 hours.
The trough line was passing through Saurashtra, Banswara, Guna, Satna, Daltonganj, southeast Jharkhand, Digha and east-southeastward to the northeast Bay of Bengal on Monday. Also, a low pressure area was situated over southeast Jharkhand and some parts of south Bihar associated with a cyclonic circulation.
Accordingly, the IMD on Monday stated that fairly widespread to widespread with isolated heavy rainfall is expected in Bihar, Jharkhand and Odisha over the next two days.
In fact, heavy rainfall is expected in east and northeast India on July 9 and 10 as well. The IMD stated that monsoon trough is likely to shift along the foothills of the Himalayas from July 9. Besides, high convergence of southwesterly and southerly winds from the Bay of Bengal is also expected over northeast and east India around July 9. Under the influence of such weather factors, widespread rainfall is likely over Bihar and neighbouring states on July 9 and 10.
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