{News} 090324! Thundershowers seen dousing mercury in north

Thundershowers seen dousing mercury in north

Vinson Kurian
Thiruvananthapuram, March 24 Maximum temperatures over northwest India are expected to come down by 2 to 4 degree Celsius during the next three days as thunderstorms continue to flare up eastward from the region.
The maximum temperatures are currently near normal over most parts of the country but the minimum temperatures have been hovering above normal by 2 to 5 degree Celsius over parts of northwest and central India.
The India Meteorological Department (IMD) said in its update on Tuesday that one such weather-maker system lay anchored over Jammu and Kashmir.
On Tuesday, a weather-setting trough extended from Lakshadweep area to west Madhya Pradesh through south Konkan, Goa and Madhya Maharashtra with an embedded cyclonic circulation over west Madhya Pradesh.
Another cyclonic circulation hovered over southwest Rajasthan. MOISTURE FEED
The cool westerlies to northwesterlies packing the southward dipping western disturbances and the moisture the associated warm southwesterlies scoop up from the peninsular seas combined to set up the unsettled weather zone extending from northwest and even peninsular west India right into the North-East. LA NINA OUTLOOK
Meanwhile, Dr Tony Barnston, Head-Forecasting at the International Research Institute (IRI) for Climate and Society at Columbia University, informed Business Line that La Nina outlook of 22 agencies around the world varied from one to another.
“This does not necessarily mean that the continuation of weak La Nina is unlikely to occur, but just that this is on one of the two extremes. On the other extreme, we have three dynamical models calling for El Nino development by this summer.
“Our own forecast is for La Nina to weaken to neutral ENSO conditions this month or, at the latest, during April. Our opinion is near the middle of the pack. So, in short, we do not expect it to last longer than expected,” he observed.
As for the Indian Ocean Dipole (IOD), Dr Barnston said the IRI outlook is quite neutral. “We see no particular hint that a positive IOD will develop. Since we think the La Nina will be gone by May, we do not see a strong preference for a negative IOD either,” he added.

Source: http://www.thehindubusinessline.com/2009/03/25/stories/2009032550561600.htm

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