Monsoon rains gain strength in Kerala from 10th June..Idukki region can get heavy rains from 10th June.

Low likely to form in Arabian Sea around 10th June...as of indications today, Low will strengthen and move initially along coast till 15N....More as situation develops.

Mumbai will keep up with light drizzles, from stray clouds for 2 more days, but thunder showers possible in outer townships.

Low pressure system and rainfall

The seasonal low found over most continents in summer and, to a lesser extent, over adjacent ocean areas in winter may be termed as seasonal monsoonal (heat) low.  Usually such Low pressure systems are responsible for rainfall of a particular place / region. The formation of small inland vortex due to intense heating of land is evident in south peninsular India during this summer. It attracted moist air from sea [sea breeze]  The relation between rainfall and low pressure system [either over sea or over land] has been established by many. Further this time the POWER HOUSE of SWM – “The Mascarene High” is not strengthened to required mark near Mauritius. However another segment of HIGH in south IO is propagating cross equatorial winds and thus the winds become Bay branch of SWM  The inland heating over south India and central India i.e East of 76 Deg E is relatively pronounced.  This enables the already set in Bay branch of SWM winds to surge towards the inland heat low.  In lower latitudes it moved from East to West and gave fairly wide spread rainfall over southern parts of the country.

Monsoon WILL reach S coast Kerala and S tip Tamilnadu on evening of 5-Jun.

RT @aash_tvm: ഉറക്കമില്ലാത്ത രാത്രിയിൽ ഒരു മഴ... പെരുമഴ!!! Raining heavily at #trivandrum now. #kerala @weatherofindia (3:37am)

RT @Asalraam:  typical monsoon conditions here at S tip TN (kanyakumari): overcast, continuous showers n powercut, Monsoon onset? 8:43am

Monsoon WILL reach S coast Kerala and S tip Tamilnadu on evening of 5-Jun.

Good signs now over S tip Tamilnadu.!! http://ow.ly/i/5N0eQ 
And by 7-Jun, monsoon current will cover upto N Kerala ... http://ow.ly/i/5N0lS 

GFS now predicts a strong low-level circulation over S-S-E Arabian sea on 8-Jun ... http://ow.ly/i/5N0pq 
S-E Arabian sea circulation if pops and moves North or N-N-E then the Arabian sea monsoon will move along with it.

Good signs now !!

From tonight, early morning and into 5-Jun, more HEAVY rain with occational wind gusts are expected along S Kerala coast and S tip Tamilnadu

Weather Instagram at June 04, 2014 at 12:19PM

#chennai - 11:56am, after a day break its hot again. #weather

from Instagram