Southwest Monsoon 2014: Skymet's predictions validated

October 1, 2014 12:21 PM | Skymet Weather Team

The Southwest Monsoon 2014 ended with a rainfall deficit of 12.3% in the country, amounting to meteorological drought. Rainfall deficit of 10% and above is termed as drought. Skymet on April 15, 2014, almost 6 months before the concluding days of Monsoon had forecast 40% chance of below normal rain and 25% chance of drought.

We updated the foreshadow on 4th July wherein chances of drought had increased to 60%. Possibility of below normal rain was 30%, while chances of rain being normal became 10%. We had categorically stated that monsoon 2014 stand a bleak chance of above normal or excess rain. And the season has ended on almost same lines, with deficit being 12.3%.

Categorization of rainfall

Season rain less than 90% of the LPA (Long Period Average) amounts to drought

Below normal rain is 90-95% of the LPA

Normal rain is 96-104% of the LPA

Above normal rain 105-110% of the LPA

Excess is more than 110% of the LPA

Skymet Meteorology Division in India had forecast adverse monsoon conditions for Northwest India and Central India. And the region that include Punjab, Haryana, Himachal Pradesh, Delhi-NCR, Uttar Pradesh and east Madhya Pradesh witnessed deficit rain this monsoon. The deviation being west Madhya Pradesh and Gujarat where rain has been normal, but in negative (± 19% is normal).

Skymet had put southern peninsula at least risk but the region has observed below normal rain by 7%. Telangana and Andhra Pradesh are the two regions that have received less rain, adding up to the deficit. We had also forecast August and September to be the best months in terms of rainfall for the country and it is exactly how the Southwest monsoon panned out during this period.

Meanwhile, all four divisions are deficit and Northwest India tops the list with rainfall deficit of 21%. East and Northeast India follow with deficit standing at 12%. Central India is deficit by 9%, while South India is 7% deficit. Amongst the 36 sub-divisions, south Interior Karnataka is the only one to observe excess rain.

 

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