Sunday, September 06, 2015
வரும் ஆனால் வராது.
Last week Chennai and suburb experienced HOT and HUMID weather. Hot and Humid air was virtually hitting face at 10m high [top of three story building]. But Upper Tropospheric Humidity was concentrated very few pockets [as far as Chennai and suburb is concerned] and it experienced 30-90mm of rainfall all in total. There was rain symptom but there were rains at pockets only. [வரும் ஆனால் வராது]. The spatial distribution of rain in Kerala and Karnataka is weak but temporal distribution (weak) nearing to negative side of Normal. Statistical interpretation some times will lead to illusion.
The threshold 850 hPa level moisture incursion is bleak. In atmosphere the moisture holding capacity will diminish aloft (or at higher level). But this time clouds were seen at height 3km. The total precipitable water at this level will be less in NON-CONVECTIVE clouds i.e SWM clouds so to say.
The south Indian Ocean is warmer near Mauritius, where the usual STH will be forming. However Bay branch of SWM is getting moisture to give copious rainfall in NE states like Assam, Sripunji witnessed very heavy rainfall, where as the SWM heavy rainfall gateway in western ghat region like Hulikal, Agumbe, Chinna Kallar witnessed very less rainfall. [If station level Normal and actual rainfall is considered for calculation it will be in deficient category only]
Kerala and Karnataka as a whole, upto 02.09.2015, is deficient. This is ground reality. But TN which is in the east is in Normal-negative side. Bay branch southerly winds helped. Here also evening radiation cooling saturated the unsaturated air and gave light rain. some times local convection triggered thunder storm activity for 10-30min [10mm-60mm]
September 06, 2015 at 02:29PM
Chennai - 2pm, T showers seen over NNW, W, SW from city at 80,100,150km. Rain expected for city as well. #weather
September 06, 2015 at 06:58AM
RT @rdsouza11: Lightning, heavy rain is here on the outskirts of #bangalore near kunigal and further west - much needed. (2:56am). #iwm
Saturday, September 05, 2015
September 05, 2015 at 07:02AM
Bangalore - 10:47pm, 4-Sep. Flooded road in Taverekere, Madivala. #weather
Friday, September 04, 2015
September 04, 2015 at 08:35PM
8:14pm, Massive storm southwest of Bangalore. Raining now at Madivala and many T showers over Karnataka. #weather
September 04, 2015 at 07:11AM
Nandura - 5:21am, heavy rain now! And raining even now at 6:20am. #iwm
September 04, 2015 at 06:34AM
RT @rdsouza11: ahhh rain is here! #bangalore much needed respite @SkymetWeather @weatherofindia light rain right now (11:41pm, 3-Sep) #iwm
Thursday, September 03, 2015
#Drought #Alert for #India
Today, Monsoon is weak over Peninsula but a circulation over Srilanka, S-W Bay can bring T showers !
A low-level circulation seen over N Bengal and its N-S trough seen up to S-W Bay with a circulation over S-W Bay.. http://static.ow.ly/photos/normal/cMmTD.jpg
At mid,upper-levels a trough seen from N Bengal to N Bay is keeping N-E states, Bangladesh active with heavy rain .. http://static.ow.ly/photos/normal/cMnAE.jpg
The mid-level circulation persists over S Gujarat along with its trough upto N-central Arabian sea.
This is September, the N-W India heat LOW is weakening and pressure around 1002 / 3mb today.
NO west coast offshore trough observed today !
#Drought #Alert for #India
Almost NO sign of Monsoon revival for N,N-W,W India during next 5 days !
11:30am, Most of India is dry, except N-E India and Tamilnadu ! ... http://static.ow.ly/photos/normal/cMo1n.jpg
In next 36/48 hrs..
S-W Bay circulation is expected to drift West crossing S Tamilnadu and push into S-E Arabian sea .. http://static.ow.ly/photos/normal/cMode.jpg
mid-level (700hpa) circulation over Gujarat is expected to persist till Saturday, this'll give some T showers for S-E,E Gujarat, W,S-W M.P
After the Bay circulation drifts into S-E Arabian sea... a monsoon revival can be expected for Kerala, Karnataka coast from 5/6-Sep !
Rainfall alert for next 36hrs
~~~~~~~~~~~~~~~~~~~~~~~~
Before morning of 4-Sep...
Scattered T showers for many zones in Tamilnadu into S Andhra, S,S-E Karnataka.
And N-E Andhra, Odisha.
Today, T showers for W-ghats of Tamilnadu, Kerala and Karnataka expected ... http://static.ow.ly/photos/normal/cMoTm.jpg
central,S-E,N Coastal Tamilnadu to get moderate rain after midnight and towards early morning of 4-Sep.
#Chennai - W,S-W,N-W suburb can get a T shower before 8pm today.
OR
Light rain towards early morning of 4-Sep.
On 4-Sep..
More scattered T showers for Interior, W-ghats of Tamilnadu.
HEAVY rain alert for W-ghats and S-tip Tamilnadu.
4-Sep, can witness HEAVY scattered T showers over S,S-central Karnataka
and
Moderate rain for N-E Andhra, into S Odisha.
From 5-Sep, coastal Kerala and Karnataka to get good showers !
During next 2 days, S,central zones of N-E states to get Heavy rain !
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