Thursday 31 July 2014

Goa July 2014 Rainfall Analysis - Helping to reduce the Deficiency

At the beginning of July 2014, Goa had a Seasonal Rainfall deficiency of whopping -49%. See the June 2014 analysis post here.

But the revival of the rains in July and the solid performance throughout the month, has helped to reduce the deficit significantly to just -17% as on July 31, 2014

















While rains in June were mainly confined to the coastal areas, Valpoi at the base of the Western Ghats received the maximum rainfall in July 2014 of 1842.9 mm, helping it to reclaim the title of the wettest place in Goa with seasonal cumulative till July 31, 2014 of  2311.5 mm, the only station to record more than 2000 mm so far.

Margao again showed that it gets the most rains in the coastal area by recording 1323.8 mm in July taking its seasonal total so far to 1958 mm at second place.

The top five seasonal toppers so far are as follows:














Comparison of rainfall records for 2013 and 2014 for top five in inches, (Sankhali data for July '13 not available):




























A Google Earth perspective for rainfall distribution across Goa:





























The month of July again emphasised its importance in the monsoon season, with most stations getting nearly three times the rain they received in June!
















It is worth looking at the rainfall data of Panaji, where IMD Goa center is located. The figures for daily rainfall reported in the media as rainfall received in Goa, actually refer to Panaji records. And as seen above Panaji hardly represents the distribution of rainfall across Goa! But just for the record the historical normal Seasonal cumulative for Panaji and the performance of monsoon in 2013 and 2014 is as under:
















As usual Margao being my home town gets special treatment here. The daily rainfall chart below shows that it rained on all days in July except on July 1!















The highest rainfall in 24 hrs was recorded as of 0830 on July 15. There was brief respite in the last week with lots of sunshine, followed by another spell of 24 hrs of heavy rains ending 0830 on July 31 with Margao recording 82.7 mm. But the maximum was recorded, yes you guessed it, at Valpoi at 184.3 mm.

The rains in July brought down the average temperatures too:

Average Max 29.22C
Average Min 23.75C

High Max Temp 33C on July 1
Low Max Temp 25.9C on July 6

High Min Temp 25.8C on July 1
Low Min Temp 21.8C on July 12 and 13

All eyes now on August and where the rainfall deficiency is headed this season!