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165.7 mm in 24 hrs,more likely in next 48

For over 15 hours ending Tuesday evening,Mumbai’s suburbs received heavy rain,ending a dry spell.

Written by Express News Service | Mumbai |
July 15, 2009 3:52:35 am

For over 15 hours ending Tuesday evening,Mumbai’s suburbs received heavy rain,ending a dry spell. As gusty winds accompanied the strong showers,the Santacruz office of the weather bureau recorded 165.7 mm rainfall in 24 hours till Tuesday evening while the Colaba bureau recorded 41.8 mm.

Met officials,who predicted more rains in the next 48 hours,said it was the combination of three factors that resulted in the downpour. “There is a low pressure area in coastal Orissa and the adjoining area in Bay of Bengal. From south Gujarat to Kerala coast,there is an offshore trough along with cyclonic circulation over Gujarat coast. All these have resulted in heavy rainfall,” said K Sathidevi,director of the MET department,Mumbai.

Deputy director general,IMD,Dr R V Sharma said it is the thumb rule in weather that Mumbai and the surrounding areas receive good rainfall when there is low pressure in Bay of Bengal. “We expect the conditions to remain so for the next 48 hours,with spells of heavy rainfall.”

The IMD has issued a forecast of frequent spells of rain or thunderstorms with heavy rains and strong gusty winds. The rainfall has also resulted in the average temperature dipping to 24 degrees Celsius.

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The data released by the Brihanmumbai Municipal Corporation on rain between 2007 and 2009 shows that rainfall has reduced in June and July across the island city,eastern and western suburbs. Colaba had recorded 701 mm in June 2007 and 419.9 mm in July 2007,633.5 mm in June 2008 and 701.1 mm in July 2008. In comparison,Mumbai has received only 220.7 mm in June 2009 and 460.3 mm this month.

Similarly,Vile Parle recorded a rainfall of 839.5 mm in June 2007 and 814.3 mm in July 2007; 479.6 mm in June 2008 and 783 mm in July 2008. This year,the corresponding figures are 225.3 mm in June and 494.2 mm this month.

Dr Sharma said the rain data over the last three years shows only 20 per cent deviation and it is normal. “We expect the situation to improve in the coming days and the rainfall conditions will be normalised.”

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