September is the last month of the Monsoon season and contributes around 19 percent of rains during the season.
The month of September records 173 mm of rains against the seasonal normal of 887 mm. Since September is the withdrawal month as well, the daily average rainfall also starts to decline, starting from 7 mm and comes down to 4 mm in the end.
The thing is, we don’t see many occasions when the month of September witnesses large excess rainfall. Since 1871, until now, i.e., in all these 148 years, there have been a total of 12 years when September has seen at least 30% or more showers of rain including 2019.
The pan India rainfall that is the seasonal rain remained above normal wherein the month of September has touched 30% or more rains barring 1891 when the pan India ended with minus seven percent.
This year, in 2019 around September 14, we touched a figure of 38% of the normal rains.
The entire September has seen good rains barring a day or two and presently we are in excess by 30%.
There have been occasions of excess rains and in this season also we have been witnessing rains above normal. We can say that we have already started clocking above normal rains since September 18 and this trend is expected to continue. Presently, the seasonal rains have already touched the mark of 105% and it might even inch towards 106%.
The remaining days of September will bring in good rains over Central, Southern and eastern parts of the country, which might help further in pushing the percent.
All the years since 1871, when rainfall was more, the season has ended on a positive side, generally normal and even above normal as well.
Years 1998 and 2007 witnessed excess rains of around 23% and possibly this September could also end at or above 30% which could make it the rainiest September in the last 36 years.
Image Credits – Skymet Weather
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