Posted Wednesday 8th Night:

Dense fog/smog )PM 10 and PM 2.5 levels >500)* enveloped the NCR on Tuesday 7th and Wednesday 8th morning.( Vagaries had forecasted fog in Sunday 5th Post).
The dense fog will persist on Thursday also. Friday the conditions will get better, with fog in the morning. Shallow fog on the weekend days.
Nights have dropped to 14c at S.jung on Wednesday morning.

*[ on Wednesday,  Mumbai PM 10 = 107 and PM 2.5= 98.
Pune PM 10 = 85 and PM 2.5 =77.]

Mumbai: Next 2 days will be sunny and warm. Night temperatures likely to drop by 2c.

Chennai: Not much of meaning full rains till Sunday. Monsoon revival from Sunday...check weekend forecast on Friday.

INTERNATIONAL WEATHER SERIES..

7 NOV 2017 MID-NIGHT (PACIFIC STANDARD TIME) ..
WASHIGTON STATE (US) ..

Washington State lies on the west (Pacific) coast of US ..It's geography is similar to that of Maharashtra with an area of 60% of Maharashtra state (India)..

• The west slopes of Olympus mountains receive the heaviest precipitation upto 6000 mms(rain+snow) in the continental United States, like the western ghats .
• The world record for highest snowfall in a season is in the Cascade range at Mt.Baker in the winter of 1998-99 .. 29,000 mms ( 1140 inches).

FORECAST FOR THIS WEEK :

SEATTLE REGION will get milder as this week progresses.. to 12 c / 6 c from current 8 c / 1 c ..Rain amount of 5-15 mms expected daily this week..

The popular SKI AREAS will be packed with fun for enthusiasts from next week, as moderate to heavy snow is expected over the Cascade mountains as this week progresses..

WASHINGTON state Map .. Past 24 hrs Weather ..

Meanwhile , Mumbai city is warm and dry at 35 c (max) / 22 c (min).. Lowest min temp. in Mumbai region today was recorded at Karjat ( 17.9 c )..
Pune city is fine and dry at 31 c / 15 c ..

Posted 5th November Night (Sunday):
BB-14 , does not survive and fizzles out before emarging as expected in last post...
Chennai: Sunday in the day , 
AP Meenambakam: recorded 13 mms , 20 mms in 24 hrs till 8.30 am (Sunday); Total for season 625 mms (+267 mms)
Nungabakkam : Recorded 9 mms till 8.30 am Sunday.:Total for season 634 mms (+266 mms).
We maintain as mentioned,there will be a weakening of the trough across Sri Lanka...hence  Rain intensity will decrease from Tuesday 7th November. 
7th onwards daily rain will be less than 5 mms /day for next 4 days at least.

Mumbai: Monday 6th and Tuesday 7th will be warm in the day with sparse clouds, but mostly sunny. Days will be around 34/35c. Slight fall in night temperatures to 20/21c on Wednesday night/Thursday Morning.
Goa: Parts of Goa had light rains on Sunday 5th evening/night. Vagarian Atul Naik confirms rains in Margao today... Light showers continue one more day on Monday.


New Delhi: Foggy mornings, no rains. Winter expected to be felt as the day temperatures drop below 30c and nights below 15c from Thursday 9th.
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Posted Thursday Night 2nd November:

1.  The Low in the Gulf of Siam , it seems, may not survive and emerge in the Bay of Bengal. Adverse conditions will make the system ( BB-14) fizzle out in the East Andaman Sea itself. 
Chennai: Intermittent to occasional showers this weekend in Chennai, around 20-30 mms /day. Rains decreasing from Tuesday 7th November .

Chances of rain in Goa:
2. A trough and a LWD off the Karnataka -Kerala coast this weekend (Saturday/Sunday) may bring thunder showers to Kerala, Coastal Karnataka and Goa.

VAGARIES EXCLUSIVE ( YOU WON'T GET THIS DATA AT A GLANCE , ANYWHERE ELSE)

• 1st NOV 2017..THE 1st FOOT STEPS OF WINTER OVER THE SUBCONTINENT..

FOLLOW  1,2,3 BELOW ..

Chennai is rainy and humid while Mumbai is warm and dry (20% humidity during the day), this time of the year as usual..

1) LOWEST MINIMUM TEMPS (BELOW 15 C) RECORDED AT PLAINS OF SOME STATES TODAY.. 

LOCATION	STATE/REGION	MIN TEMP in C
		(1st Nov 2017)
UNA	HIMACHAL PLAINS	11.2
HALBURGA(BIDAR)	KARNATAKA	11.2
NAGAR	MAHARASHTRA	11.6
CHHINDWARA	MP	12.2
BHIKNUR	TELANGANA	12.3
BHILWARA	RAJASTHAN	12.6
JALANDHAR	PUNJAB	13.1
PHULBANI	ORISSA	14.5
ROHTAK/BHIWANI/NARNAUL	HARYANA	14.2
ANAND	GUJARAT	14.5
SHAHJAHANPUR	UP	14.6
JAMMU	JAMMU KASHMIR	14.9
MUMBAI REGION-PALGHAR	MAHARASHTRA	17.5

2) CLICK ON THE MAP BELOW (MAX / MIN TEMP in C) 

3) MAX / MIN TEMP in C ..HILLS / HILL STATIONS (OUTSIDE OF THE SUB HIMALAYAS / HIMALAYAS)

HILLS/HILL STATION	STATE/COUNTRY	MAX/MIN TEMP in C	HILL RANGE	ALTITUDE
		(1 NOV 2017)
NUWARA ELIYA	SRI LANKA	20 / 14	CENTRAL	1880 mtrs
HAKHA	MYANMAR	15 /11	CHIN STATE	1866 mtrs
DOI ANG KHANG	THAILAND	20 / 12	DAEN LEO	1529 mtrs
ZIARAT	BALOCHISTAN	18 / 2	SULAIMAN	2543 mtrs
MT.ABU	RAJASTHAN	27 / 9	ARAVALLI	1196 mtrs
HAFLONG	ASSAM	22 / 15	CACHAR	680 mtrs
GIRNAR	GUJARAT	28 / 11	GIR	1031 mtrs
PACHMARHI	MP	26 / 9	SATPURA	1100 mtrs
MAINPAT	CHATTISGARH	25 / 13	MAIKAL	950 mtrs
DARINGIBADI	ORISSA	26 / 14	EASTERN GHATS	900 mtrs
ARAKU	ANDHRA	25 / 9	EASTERN GHATS	910 mtrs
YERCAUD	TAMILNADU	21 / 15	EASTERN GHATS	1463 mtrs
OOTY	TAMILNADU	18 / 11	NILGIRIS	2236 mtrs
KODAIKANAL	TAMILNADU	16 / 12	PALANI	2339 mtrs
VALPARAI	TAMILNADU	27 / 16	WESTERN GHATS	1041 mtrs
MUNNAR	KERALA	24 / 15	WESTERN GHATS	1532 mtrs
MADIKERI	KARNATAKA	25 / 16	WESTERN GHATS	1170 mtrs
CHIKKMAGALURU	KARNATAKA	27 / 18	LEE -WESTERN GHATS	1090 mtrs
AGUMBE	KARNATAKA	31 / 15	WESTERN GHATS	658 mtrs
MAHABALESHWAR	MAHARASHTRA	26 / 16	WESTERN GHATS	1384 mtrs
IGATPURI	MAHARASHTRA	30 / 12	WESTERN GHATS	600 mtrs

Posted 31st October Night:
Heavy Rains Lashed Tamil Nadu Delta Districts and Chennai Regions...Rainfall as on 31st October Morning in cms:

Sirkazhi - 31cm, Parangipettai - 26cm, Kollidam - 24cm, Chidambaram - 20cm (From Delta districts)
From Chennai:
Taramani - 19cm
Tambaram - 18cm
Chembarambakkam - 18cm
Chennai AP (Meena) - 17cm
Ponneri , Papanasam (Tirunelveli Dist) - 16 each
Kvk kattukuppam arg (Kancheepuram Dist), Anna uty arg (Chennai
Dist), Tiruvallur arg (Tiruvallur Dist) - 15 each
K.m.koil (Cuddalore Dist), Karaikal (Karaikal Dist), Anna University
(Chennai Dist), Cuddalore (Cuddalore Dist), DGP office (Chennai Dist) -
14 each
Sriperumbudur (Kancheepuram Dist) - 13
Chennai(Nungambakkam) (Chennai Dist), Satyabama uty arg
(Kancheepuram Dist) - 12 each


Meanwhile..Cooling starts from the Northern Region of India: Minimums as on 31st October:

Leh(ladakh) ( J & K) -5.2 ℃
Kupwara (J & K) 0.5 ℃
Pahalgam (J & K) 1.1 ℃
Qazigand (J & K) 2.3 ℃
Gulmarg (J & K) 2.4 ℃

Keylong (HP) 1.5 ℃
Manali (HP) 4.2 °C
Almora (Uttrakhnad) 5 ℃
Mukteshwar Kumaon (uttrakhand) 6.6 °C

TOP 15 LOWEST MIN TEMPERATURE IN PLAINS TODAY(31/10/17) ...from Navdeep Dahiya
-----------------------------
(1) Una: 11.5°c
(2) Yamunanagar: 11.7°c
(3) Jalandhar: 11.7°c
(4) Bhilwara: 12.2°c
(5) Muzzafarnagar: 12.6°c
(6) Moga: 12.8°c
(7) Mahendragarh: 13.1°c
(8) Ludhiana: 13.2°c
(9) Chittorgarh: 13.2°c
(10) Fatehgarhsahib: 13.4°c

Minimum Temperatures on 31.10 .2017 (Gujarat)...from Ankit Patel
Valsad 14.6c
Gandhinagar 15.5c
Mahua 16.3c
Amreli 17.3c
Ahmedabad 17.4c
Baroda 17.4c

Posted Monday Night 30th October:

1. Showers occured in Chennai from Monday morning...Minambakam recording 66 mms in 12 hrs ended 8.30 pm IST Monday.
Tuesday and Wednesday will see intermittent showers at around 50-55 mms /day.

2.A Well Marked Low, BB-14, will emerge in the North Andaman Sea on 2nd November. Will Strengthen and track West initially.
Next update: Wednesday Night...

Posted Saturday Night 28th October:

1. Heavy Showers expected in Chennai on Monday and Tuesday...around 50-55 mms/day.

2. A Well Marked Low may emerge in the North Andaman Sea around 2nd November. BB-14 can strengthen. Position of shear, SST, STR and upper winds will determine its track.

More on this later....

von Kármán vortices

In 1912, physicist Theodore von Kármán, a Hungarian-American physicist, was the first to describe the physical processes that create long chains of spiral eddies like the ones shown above. Known as von Kármán vortices, the patterns can form nearly anywhere that fluid flow is disturbed by an object. “von Kármán vortices” arise when winds are diverted around a blunt, high-profile area, often an island rising from the ocean. The alternating direction of rotation in the air forms swirls in the clouds.

In this case, the unique flow occurs as winds rush past the tall peaks on the volcanic islands. As winds are diverted around these high areas, the disturbance in the flow propagates downstream in the form of vortices that alternate their direction of rotation.

 the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi NPP satellite captured a natural-color image (top) of such swirls on the lee side of Guadalupe Island. The volcanic island rises from the Pacific Ocean off the coast of Baja California, Mexico.

The second image shows the same phenomenon occurring an ocean basin away, on the lee side of Tristan da Cunha—a remote volcanic island in the South Atlantic. The image was captured on June 25, 2017, by the Operational Land Imager (OLI) on the Landsat 8 satellite. The image is false-color (OLI bands 6-5-3) to better distinguish areas of land, water, and clouds.