The Telegraph
Wednesday , December 12 , 2012
Since 1st March, 1999
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Unseasonal rain cloaks winter chill

Rain brought about by an “anti-cyclonic” circulation over Gangetic Bengal caught Jharkhand by surprise on Wednesday.

Weathermen said the circulation coupled with the effect of a western disturbance in the northern part of the country resulted in an adverse weather condition in the state. “The anti-cyclonic circulation which formed over Gangetic Bengal last evening resulted in heavy moisture incursion into the lower levels of the atmosphere, bringing rain. The condition also resulted in an abrupt rise in minimum temperatures,” said Ashish Kumar Sen, director of Patna Meteorological Office.

Morning showed the day as Ranchi, Jamshedpur and Daltonganj woke up to heavy fog on Wednesday. Later, thundershowers lashed the capital and the steel city. While Ranchi recorded 5mm rain, Jamshedpur received 10.4mm. Light showers were reported from West Singhbhum, Seraikela-Kharsawan, Koderma, Khunti, Dhanbad, Bokaro, Latehar and Giridih as well.

With minimum temperatures taking a sudden upward turn, woollens were given the miss by many on Wednesday. Residents of the steel city opted for the fan as minimum temperatures shot up by five degrees. The chill was missing at 17°C, against Tuesday’s 12.5°C. Capital Ranchi also witnessed a rise in minimum temperatures by four degrees, recording 17°C against 13°C the day before.

In Daltonganj too, minimum shot up by four degrees. The local observatory recorded a minimum of 15.4°C compared to 12.3°C on Tuesday.

Even as the minimum temperatures rose, maximum temperatures fell due to cloud formation. Ranchi’s maximum was 26.6°C on Wednesday, down from 29°C on Tuesday. Jamshedpur recorded a maximum of 29.1°C, from Tuesday’s 30°C. In Daltonganj the high fell by two notches to 27°C.

A duty officer at the Regional Meteorological Centre at Alipore in Calcutta said that the anti-cyclonic circulation was prevailing about a kilometre above sea level. He added that the condition would persist for another 24 hours.

In its long range forecast the Patna Met office predicted that the weather condition would improve only after 48 hours. “The minimum readings will fall again from December 14, bringing back the chill. In the third week of December, the minimum temperature would be around 8°C in most districts located in hilly terrain, while the minimum reading in Ranchi is expected to fall below the 7°C mark,” said a weather analyst.