In 2015 SW Monsoon set in Goa a few days late - June 8 according to IMD and June 9 according to Vagaries, against its normal expected onset on June 5. But it still managed to put up its best performance in 3 years.
With an Area Weighted Average Rainfall of 790 mm as at 0830 hrs on June 30, 2015 as against the normal rainfall in June of 906 mm, the rainfall was 13% below normal. But compared to 23% below normal rainfall in June 2013 and 46% below normal rainfall in 2014, this was a stellar performance!
The following graphs tell the story better:
With an Area Weighted Average Rainfall of 790 mm as at 0830 hrs on June 30, 2015 as against the normal rainfall in June of 906 mm, the rainfall was 13% below normal. But compared to 23% below normal rainfall in June 2013 and 46% below normal rainfall in 2014, this was a stellar performance!
The following graphs tell the story better:
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| Source: http://www.imdgoa.gov.in
On 11 days there was normal or above normal rainfall. Three days were with Nil rainfall and rest of the days below normal rainfall. Break monsoon like condition was experienced after June 22, mainly due to a deep depression which developed in Northern Arabian Sea and which moved towards Gujarat, taking rains away from Goa, but dumping heavy rains in N. Konkan including Mumbai and South Gujarat. A weak monsoon trough off the west coast also contributed to lots of sunshine and rising day and night temperatures with intermittent rains, mostly in the interior parts of Goa, from June 24th.
Different parts of the state got varying amounts of rain. While Sankhali got 37.41 inch rains, Dabolim got just 26.31 inch rains.
 
All the towns, however got substantially better rains than in the deficient year 2014:
 
Rainfall Recorded in June 2015 in mm
These rains auger well for sowing during paddy cultivation. And sowing activities are in full swing all over the state.
The cloud cover and rains brought the day average temperatures down substantially to 31.57C, lowest since October '14. The night low average temperature at 24.63C, indicate the relief from the increase in low temperatures during April and May.
The daily rainfall chart for Vagaries Goa Rain Gauge at Aquem, Margao, is indicative of rainfall in Goa in June:
 Goa receives just around 30% of the Seasonal rains in June. So, plenty of action still to come in the remaining three months. Will El Nino have an effect? Or will the Indian Ocean Dipole turn positive and give normal rains? Watch this space! |
