RT @GanpatTeli1: Super #HOT Delhi today... @weatherofindia http://t.co/y9lNpXoZeN

Posted Friday afternoon:

South West Monsoon advancing into Kerala on Friday 6th June. The Monsoon move into Coastal and S.I. Karnataka and Southern TN by Sunday, 8th June.
Mumbai Monsoon around 14th...Saurashtra and Bharuch get their showers after 15th June..

Low pressure likely to form off the Kerala coast on 7th June. It can intensify first to a weel marked low and then depression. As a depression, it can be positioned due West off Goa by the 9th/10th of June. There is a trough in the 700 hpa level along the 19N line. System could get embedded in the trough. If so, then a) it can strengthen and move due West. b) If the rough gets weak by the 9th/10th, then the system will also weaken and move NW and dissipate.
Some models show a) and some b) as a possibility.
City wise on vagaries 

Monsoon is here. #Kerala

RT @IamKanal: Monsoon started. Moderate rain from early morning at Kochi. @weatherofindia http://t.co/lyRMdmUekf (7:32am)
RT @Sailorabee: You just cannot get to work without getting wet. That means the #Monsoons are here! #Kochi
@WeAreKochi  (7:44am)

7:30am, Monsoon Showers seen pushing into S,central Kerala coast and into S tip Tamilnadu ... http://ow.ly/i/5Ot2H 

RT @Sailorabee: And it has rained. Been raining since 19:15 or so. Has the #Monsoons arrived?
#Kochi
@weatherofindia @WeAreKochi
7:53pm

Weather Instagram at June 05, 2014 at 03:01PM

#chennai - 2:58pm, sudden T showers over W-S-W suburbs. T cell photo. #weather

from Instagram

#Chennai - 3pm, T showers seen over W,W-S-W at around 30 to 80km from city ... http://ow.ly/i/5NOnm

Weather Instagram at June 05, 2014 at 01:50PM

#chennai - 1:45pm, IWM Aws station in photo. Feels like 45C. #weather

from Instagram

Monsoon to reach S Kerala coast in next 20hrs

Monsoon for S Kerala coast in next 20hrs ... Initially it'll be along S,central Kerala coast and over S tip Tamilnadu http://ow.ly/i/5NIMe 

RT @Sailorabee: Last night saw some good rains. 
#Kochi #Monsoons @weatherofindia (6:45am)

Rainfall alert for next 36hrs
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Today, late evening, HEAVY rain expected to start all along S,central Kerala coast, S tip Tamilnadu ... http://ow.ly/i/5NJMQ 
Today again more T showers expected along W-ghats of Kerala, W-ghats of Karnataka and W-ghats of Maharastra... http://ow.ly/i/5NJPT 
Today evening, midnight, T showers over S,central,S-E Karnataka, N-W,N-central,central,S-central,N Tamilnadu .
By morning of 6-Jun, widespread HEAVY rain forecast for S,central Kerala and S tip Tamilnadu ... http://ow.ly/i/5NKg2 
Afternoon of 6-Jun will pop more T showers for S,central,E,W Karnataka into N,N-central,N-W Tamilnadu.
Evening, midnight of 6-Jun, T showers for N,N-E Tamilnadu, S,S-central Andhra... http://ow.ly/i/5NKl2 
Tomorrow, all thru the day, intermittent sharp showers will lash S,central Kerala coast, S tip Tamilnadu !!

A LOW is expected over S-E Arabian sea on 8-Jun.

This may or may not benefit S-W coast of India with Monsoon depending on its movement !

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