Friday, November 30, 2012

Cold wave moving in for Pakistan, N,N-W,W,Central India

Cold wave is moving in in the rear of Western Disturbance. 

In Pakistan, Islamabad was 4c on Friday morning, Hyderabad saw 12c and Karachi 14c. Coldest in the plains were Nawabshah and Sibbi at 1c.
Karachi could fall to 12c and Hyderabad to 10c this weekend. Lowest  may touch  0c  in the plains of Balochistan/Sindh.

Expecting the cold to move into India from Friday night. Next 2 nights (from Friday) we could see lows of around 8c in New Delhi and 7c in NCR. Amritsar could drop to 4/5c and Chandigarh 8c.
Many places in Punjab and Rajasthan will be around 6/8c. However the coolest places in Punjab (Adampur) or Rajasthan could touch 3/4c by Sunday night (Monday morning).

Maharashtra and finally Gujarat will see a drop in night temperatures from Saturday morning temperatures. Gujarat nights will drop by 2/3c from current levels.Surat will finally drop to below 15c this weekend.
Next 2 nights, expecting Vidharbha towns to be around 11c, including Nagpur.

Mumbai will be at 20c (Colaba) and 16c (Scruz) on Saturday morning. Sunday morning will be 1c lower.
Pune and Nasik may touch 7/8c next 2 nights. Aurangabad will slide to 11c..

Moving East, cold could take Kolkata by Sunday morning, with the expected night temperature on Sunday could be 12c. On Friday morning, it was already 3c below normal at 14c in Kolkata. Days would be around 26c with North winds.

Kathmandu can see the minimum going down to below 3c, around 2/3c from Sunday night.


Taken from http://rajesh26.blogspot.in/ 
#chennai - will have another cold night with a low of 20 deg C expected around morning. From Monday morning the low temp. will move above 21

"99B" - Still elongated North-South and with less convective activity.

"99B" - Still elongated North-South and with less convective activity.
8pm, Satellite IR shows less convective activity over North, West quadrant of the circulation. 
Signs of COLD Dry wind prevailing over N,W Bay is affecting the convective activity and further strengthening.
A weak circulation can also be seen over S-E corner of Arabian sea.


It's expected, around tomorrow evening the system will consolidate and move further West. Not expected to become as a Cyclone.  At the same time the cold dry winds from N-W India entering into N,W Bay will weaken or stop.

Due to the Dry winds present along N,W,W-central Bay the convective activity of the system will be concentrated over its N-E,S,E quadrant only till 2 /3-Dec.

Latest NOGAPS predicts LESS rainfall for central coast, Interior Tamilnadu from this system. 
But GFS model suggests good rain for central, N.Tamilnadu coast.. and it'll start from 3-Dec.


This weekend's outlook put up on blog...colder conditions expected.....system as a WML may move west...
http://rajesh26.blogspot.com

W.D over Kashmir has cleared off in a jiffy .. And NO W.D expected till 4 / 5-Dec.
If the Bay low survives and moves west .. showers expected to start along central,N.Tamilnadu coast from 3 / 4-Dec.. Till then COLD mornings
@dsanjeevkumar #chennai - records a low temp. of 19.5 deg C today morning.

"99B" - an elongated LOW pressure system now.

"99B" - is an elongated LOW pressure system now.
In next 2 days, it's expected to consolidate while moving west and may not develop into into a Cyclone.
Latest analysis by NOGAPS model suggests an elongated LOW extending from N-N-E to South along 90 E Longitude. But COLA analysis plots the circulation just North of 10th parallel. 

JTWC report as of 5:30am IST
------------------------------------------------------

AN AREA OF CONVECTION HAS PERSISTED NEAR 9.5N 90.9E,
APPROXIMATELY 670 NM EAST-NORTHEAST OF COLOMBO, SRI LANKA. RECENT
ANIMATED INFRARED SATELLITE IMAGERY SHOWS DEEP CONVECTION FLARING
OVER A DEVELOPING LOW LEVEL CIRCULATION CENTER (LLCC) EVIDENT IN A
292104Z  AMSU-B PASS. THIS DISTURBANCE LIES BENEATH AN UPPER LEVEL
RIDGE AXIS, WITH LOW VERTICAL WIND SHEAR AND FAVORABLE DIFFLUENCE
ALOFT. HOWEVER, THE LLCC IS EXPECTED TO MOVE WESTWARD INTO AN AREA OF
HIGHER VERTICAL WIND SHEAR AND WILL LIKELY ENTRAIN DRIER AIR PRESENT
ACROSS THE WESTERN BAY OF BENGAL IN THE DAYS AHEAD, LIMITING THE TIME
WINDOW FOR FURTHER DEVELOPMENT. MAXIMUM SUSTAINED SURFACE WINDS ARE
ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED
TO BE NEAR 1005 MB. BECAUSE THE LLCC IS JUST BEGINNING TO DEVELOP,
THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE
WITHIN THE NEXT 24 HOURS IS LOW.

NOGAPS suggests a Depression over S-Central Bay on 3-Dec and will move towards N.Tamilnadu coast.

COLA model also suggests a Depression over S-Central Bay on 3-Dec and expects to move towards central Tamilnadu coast.

RT @aknarendranath: Business Line : Industry & Economy / Agri-biz : US agency sees ‘moderate’ chance for a Bay storm http://t.co/jCnWW8ji

"99B" - A fresh LOW over S-S-E Bay

A fresh LOW over S-S-E Bay.
Pressure is around 1004mb
Present location is marked here..

8am, Latest satellite IR shows heavy convective activity.