Due to a UAC ( Upper Air Circulation) that would soon become a low pressure , there would be wide spread rains in Bihar , Westbengal and rest of North east from 14th feb 2014 to 16th feb 2014 .

https://www.facebook.com/WeatherOfKolkata

Wet weekend ahead for N,N-central,central, E-central, East, N-E states of India

Latest analysis show that Mid level trough along 67E and dipping south upto 15N has taken shape... http://ow.ly/i/4AsKJ 
This mid level trough is embedded with a low level (850hpa) circulation along S,S-W Gujarat ... http://ow.ly/i/4AsRS 

7:30pm, Due to this trough, circulation... most of N,N-W,central,W,E-central India has become CLOUDY ... http://ow.ly/i/4AsYs 

By tomorrow evening, the low level circulation is expected to be over #Delhi, W Uttarpradesh and along Uttarakhand.. http://ow.ly/i/4At4C 
And on 15,16-Feb, the circulation is expected to move E-S-E into E-central,East India ... http://ow.ly/i/4At8q 

In 24,36hrs... Scattered and Heavy / moderate rain expected over N,N-central,central, E-central, East India ... http://ow.ly/i/4Ate3 
On Saturday, Sunday... scattered moderate rain expected to cover East, N-E India as well !
By Monday evening, this present system will clear out from Indian territory !!

RT @rajugana: @weatherofindia Bangalore 6.15pm, Formation of Clouds in the eve.. first in this season. a picpic.twitter.com/WRaLzOvcdu

Malout - 7:30pm, "It's cloudy here"

#COLD wave continues over N,N-W,N-central India ..
#Delhi = 6 C, Hissar = 3 C, Jammu = 5 C, Lucknow = 3 C.

Today morning LOW temperature was recorded at, Muzaffarnagar (Uttar Pradesh) = 1.9 C and Narnaul (Haryana) = 2.6 C

Badlapur max temp 27.5°C with min humidity of 45% today. 

So an lovely cool,cloudy & windy day with some traces of rain..

For N,N-W,N-E Tamilnadu, #Chennai and S Andhra... night temperature is expected to rise again from tonight !!

#Chennai - Today morning temperature, IWM Polichalur station = 20.6 C and Nungambakkam = 21.6 C

#Chennai ' s #COLD nights during last few days may be due to winds from High pressure in China ... http://ow.ly/tvMFH 

The day temperature over S Peninsula is expected to be Normal during next 3 days !
And night temp is expected to rise by 1 or 2 deg C.

Cloudy days expected over Karnataka, N,central Andhra and even into N,N-E Tamilnadu from Thursday !

The remnant moisture of the W.D is seen over E,E-central India .. and this is expected to vanish in next 15hrs.

8:30pm, Due to moisture presence in E,E-central India, today cloudy with moderate rain seen over N-central,N-E Odisha http://ow.ly/i/4z0k7 
8:30pm, Isolated light showers also seen over S,S-W Bengal .... http://ow.ly/i/4z0k7

By tomorrow evening, a mid level trough is expected along 65E and dipping south upto 17N or even upto 14N... http://ow.ly/i/4z0tD 
Upcoming mid-level trough is expected to have a circulation embedded at low levels, initially over N-E Arabian sea. http://ow.ly/i/4z0Ad 

This mid-level trough and low level circulation will push moisture into central,W-central India and into N,central Peninsula from 13-Feb
On 13-Feb, the N-E Arabian sea circulation will push N-E towards #Delhi !! 
From Friday evening, its expected to drift East or E-S-E

The upcoming mid-level trough is expected to push in moisture into N Kerala, upto S Karnataka and into N Tamilnadu as well !

From night of 12-Feb and into 13-Feb, scattered moderate rain expected over central,N-central,N, E-central India .. http://ow.ly/i/4z11s 
On 13,14-Feb, heavy scattered rain expected over N,N-central,E,E-central India.
On 13,14-Feb, light rain also expected along S-W coast of India.
On 14-Feb, Showers expected over E,N-E Maharastra, Chatisgarh and even into N,N-E Andhra.
More snow, rain expected for Kashmir, Himachal and Uttarakhand from Thursday to Saturday !!
On Saturday, rain may pop into N-E,central,S Andhra and even into N,N-E Tamilnadu.
Scattered moderate, heavy rain expected for East, N-E India from Saturday, 15-Feb.

COLD wave continues over most of N,N-W,N-Central India.
Most stations has recorded below normal Day and Night temperatures !

#Delhi - records a day temp of 20 C (3 C below normal) and a night temperature of 6 C, which is 6 C below normal !

Some other low night temperatures are ... Hissar = 3 C, Ludhiana = 4 C and Jodhpur = 7 C

Today morning, Narnaul (Haryana) records a low temperature of  2.6 C.

COLD wave over N,N-W,N-central India to persist till Friday, 14-Feb.

The High pressure wind from Japan & China

11 Feb 2014 / 0600 Z Chart

[1] Winds from HIGH pressures in Japan & China are engulfing from NEly direction south eastern coastal regions of East coast of India. This may perhaps one of the reasons for continuous lower minimum temperature in Chennai and adjoining  coastal area.  

[2] Further the apparent movement of Sun towards NORTH is also making impact on temperatures in lower latitude and discontinuity in winds field is is also evident.

[3] However the increase in cold in North & Central India is due to N/NW wind coming after the passage of WD


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     Yesterday my friend working in TN Forest contacted me to part with solution to chase 40 odd elephants which invaded SANAMAVU village near Hosur.  I have advised to keep powerful pointer GREEN LASER for his safety to browse the bushes from distant and to thwart elephants from advancing into civilian land.  

As expected North India is COLD again. Narnaul (Haryana) records a low temperature of 2.5 C

Today morning, #Delhi recorded 5 C which is 5 C below normal.

Some other COLD stations in N India ... Ambala = 6 C, Hissar, Ludhiana = 4 C, Jaipur = 7 C and Lucknow = 5 C.

Synoptic Weather Situation expected in The Indian Sub-Continent for the next 4 days : Monday 10th Feb -  Thursday 13th Feb:

As on Sunday, a WD (not numbered) situated in the upper air over Northern Pakistan and adjoining Afghanistan moves away N/NE.
The winds currently are sweeping from N/NW along the entire plains of Northern India and Pakistan, and also along the sub Himalayan plains, Central India and Western India.
Monday: Cold conditions and below normal temperatures in Northern Pakistan, Central Sindh and Northern/Western and Central India next 2 nights. Lowest in next 2 nights in Punjab plains could reach 1/2c.

Tuesday, we could possibly see a Line of Wind Discontinuity (LWD) running East-West roughly from the W.Bengal/Odisha border on the East Coast of India westwards towards Chattisgarh.
Winds South of the LWD would be SW and NE North of the trough. This may possibly bring light to moderate showers to Northern Odisha (Including Sambhalpur) and adjoining Coastal Bengal.
Kolkata will be cloudy with light rains in some areas of city or vicinity.
Cloudy in Northern Pakistan and Western Nepal.

Wednesday, the trough would possibly stretch upto West MP, with strong Easterlies blowing along the line across Central India. Southern parts of the LWD will see South winds (Nagpur), and North winds in UP and Bihar..Kolkata could cloudy skies and light rains in some parts.
Chances of Westerly winds over Mumbai from Wednesday, would bring in moisture and show a gradual rise in temperatures...hitherto pleasant and around 15c/16c (Scruz) till Tuesday of the week.
Delhi NCR also remains below normal next 2 nights, with lows reaching 6/7c.
Chennai, now pleasant and comfortable as per its normal, was 17.8c on Sunday morning. Would expect the temperatures to be around 18/19c till Tuesday , with a rise from Wednesday.

Cloudy weather in North Pakistan.Clearing after Wednesday.
Islamabad will be partly cloudy till Tuesday with lows around 3/4c next 2 nights.
Karachi clear, with a range  between 26c and 11/12c.

Thursday: There is a chance that the trough may have an embedded low , somewhere over Central India by Thursday. Winds would be anti clockwise around the low.The winds at the 500 hp level are expected to pick up speed, and aided by the jet streams may reach around 45-50 knts in the W/SW direction across the Indian region. This would mean ideal conditions at 18500 feet for clouds to appear.
Clouding could cover the region from Konkan across North Mah into Central India towards the low.
Clouds appearing with light rains in Nagpur on Thursday.
Clouds would also show up in Mumbai on Thursday night or Friday.

Low ( being in the trough), can strengthen from Friday, and move N/Ne from central India location to N and NE India. Precipitation for Kathmandu from this system....brief update on Tuesday night on developments.

from Vagaries: www.vagaries.in