Reviewed at 10.pm IST, "Thane" is about 100 kms East of Puducherry. Notching up slightly, Pressure at 986 mb, the surface winds are 125 kmph, both parameters strengthening in the last 2 hrs.

Tracking slightly Northwards, 12.3N now), at about 10 kms per hour (currently), it can be assumed to cross the coast South of Chennai by early Friday Morning.

Chennai is facing gusty winds (NE) since 8.30 pm, and gusts have topped 56 kmph.

Cudalore is experiencing moderate to heavy rains, and is a cool 23c at 9 pm. Wind s are at 30-35 kmph, with gust probibility of 60 kmph.

Some strong showers on way for Pondicherry coast.. will reach around 1am.. We need some one to report directly from Pondicherry zone.

It's almost a repeat of Cyclone JAL for Chennai. From 8:30am today city has recorded only 2.4cm till 9:09pm. Too early to decide ??!!

Cyclone Thane is slowly starting to weaken, pressure has increased from 982mb to 989mb, and wind speeds have reduced to 110km/hr

chennai - will not have any strong showers till 1am ... and will pickup towards morning! Ground winds will be upto 35km/hr till 1am.

chennai - Now most of the showers are concentrated over W-S-W of EYE of Cyclone.. so showers are for Pondicherry coast only at the moment.

Now 8:15pm, most of the deep convective bands are over W-S-W of Cyclone EYE, So chennai is having a break from strong showers.

Currently at 8.00 pm IST, "Thane "is 110 kms East of Puducherry, and has commenced its weakening phase. It is now 989 mb and surface maximum winds have dropped to 110 kmph. This weakening was expected from tonite (See previous post). 

Rainfall in Chennai ( as per Kea Station) till 8.30 pm 24 mms.

Next Update at 10.0 pm IST.

Here's the latest 8:30pm radar image showing the EYE is still visible and located around 120km East of Pondicherry.. http://ow.ly/i/oCdq

Cyclone is going to cross Pondicherry coast after 6am of 30-Dec.. Now (8:30pm) it's located around 120km East of Pondicherry

Cyclone thane is strongly marching towards pondicherry now 120km .. heavy rains nearing pondi 8pm

Cyclone "Thane" - updates during past 2 hours

Cyclone "Thane" - updates during past 2 hours in http://twitter.com/weatherofindia
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6:53pm, #chennai is having a break is showers ... with wind strength also reduced.. Now heavy rains are approaching Pondicherry coast.

Cyclone Thane is now 6:30pm is at 150km East of Pondicherry... http://ow.ly/i/oBLo >> still having good EYE

Cyclone Thane 6:45pm is weakening, but still a Severe Cyclone... and almost stationary at 12:09:07 N , 81:12:39 E .. 160km S-E of #chennai

RT @kalyansimhan: #chennai #thane http://twitpic.com/806q1h

Cyclone Thane is now 170km S-E of #chennai and East of Pondicherry... now 5:33pm showing signs of weakening!!

RT @trendsmapindia: Indian Weatherman, @weatherofindia is now trending in India http://trendsmap.com/in

@karthimec >> To know more about Cyclone naming ... here's the list and find out what'll be the name of next one .. http://ow.ly/8cU2h

RT @srinisan: @weatherofindia Perfect prediction. We are seeing a heavy downpour here at Sholinganallur, #chennai (5:07pm)

@ketanjatakia >> To know more about Cyclone naming ... here's the list and find out what'll be the name of next one ..  http://ow.ly/8cSA1

RT @navysupporter: Navy rescues 11 stranded fishermen off Andhra coast... http://tinyurl.com/bswhl29

RT @scanman: Follow @weatherofindia for regular updates on Cyclone #Thane

Cyclone "Thane" - NO sign of weakening yet! In striking distance 180km East of Pondicherry! .. http://ow.ly/8cSoT

RT @st_hill: @weatherofindia Chennai ppl are advised to stay home after 5/6pm. Extreme heavy rain & winds upto 100kmph will start after 6pm

#chennai - more strong showers approaching city from E-S-E .. will reach in another 30 min

Cyclone "Thane" - NO sign of weakening yet! In striking distance 180km East of Pondicherry!

Position, 3:30pm:: 11:48:01 N and 81:34:20 E
Winds :: up to 125 km/hr
Pressure :: 982mb
Showing NO sign of weakening yet, but expected to weaken from midnight!
Continue to track west towards Pondicherry, now located around 190km East of Pondicherry.
Chennai will have to bear up to 80% of the Cyclones fury !
Extreme heavy rains with Wind gusts up to 100 km/hr will start along Chennai to Pondicherry coast from 6pm.


Latest satellite IR shot, 3pm
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Latest Radar image, 4pm
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One can see the EYE of Cyclone Thane between 150km and 200km

IMD warning, 1:30pm
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Very Severe Cyclonic Storm 'THANE' over southwest Bay of Bengal:-Cyclone Warning for north Tamilnadu and south Andhra Pradesh coast : Red Message

The very severe cyclonic storm 'THANE' over southwest Bay of Bengal moved westward and lay centered at 1130 hrs IST of today, the 29^thDecember 2011 near latitude 12.0⁰N and longitude 82.0⁰E, about 220 km east of Puducherry, 200 km southeast of Chennai (Tamilnadu) and 400 km north-northeast of Trincomalee (Sri Lanka). The system is likely to move westwards and cross north Tamil Nadu coast between Nagapattinam and Chennai, close to Puducherry around early morning of 30^th December 2011.

JTWC warning, 2:30pm
--------------------------------------------------------------------------------------

290900Z POSITION NEAR 11.8N 81.7E.
TROPICAL CYCLONE (TC) 06B (THANE), LOCATED APPROXIMATELY 135 NM 
SOUTHEAST OF CHENNAI, INDIA, HAS TRACKED WESTWARD AT 06 KNOTS OVER 
THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY 
INDICATES THAT THE SYSTEM HAS INTENSIFIED FURTHER WITH A 15-NM EYE. 
A 290245Z SSMIS IMAGE DEPICTS TIGHTLY-CURVED BANDING WRAPPING INTO 
THE CENTER WITH THE BULK OF THE DEEP CONVECTION OVER THE WESTERN 
SEMI-CIRCLE DUE TO WEAK, EASTERLY VERTICAL WIND SHEAR. THERE IS GOOD 
CONFIDENCE IN THE CURRENT POSITION BASED ON THE VISIBLE EYE. THE 
CURRENT INTENSITY IS BASED ON DVORAK ESTIMATES RANGING FROM 77 TO 90 
KNOTS. TC 06B IS FORECAST TO TRACK WESTWARD, MAKING LANDFALL NEAR 
TAU 12, AND IS EXPECTED TO DISSIPATE OVER INDIA BY TAU 36. WITH THE 
EXCEPTION OF WBAR, MODEL GUIDANCE IS IN TIGHT AGREEMENT. MAXIMUM 
SIGNIFICANT WAVE HEIGHT AT 290600Z IS 22 FEET.

Cyclone Thane :: IMD says that wind gusts may reach upto 145 km/hr while landfall around midnight today !

chennai - some strong showers approaching city from S-E in another 15 to 30 min .. and more on way !! Wind speed now 1:33pm upto 30km/hr

@madan @blogadda >> Follow @weatherofindia for regular updates on Cyclone Thane

After Cyclone Thane .. showers for N. Tamilnadu coast may last till 2-Jan ... expecting a WET New Year day .. http://ow.ly/i/oAUO

Scattered winter showers possible for E.central India from New Year day to 3-Jan ... http://ow.ly/i/oAUD

Moisture push from Bay into central India along with W.D will provide some heavy rain over E.central India on 1-Jan-12. http://ow.ly/i/oAUu

RT @bubbly_ank: “@aaroo4 Cyclone Thane may wreak havoc - southindia - Chennai - ibnlive http://ping.fm/5LQyf… via @ibnlive”

chennai - rainfall amount so far(12:58pm) from drizzles is 1.19 cm

chennai - People are advised to stay at home after 5/6pm ... Extreme heavy rainfall and winds upto 100mk/hr will start after 6pm

Rainfall and Wind intensity will increase after 4/5pm along entire coast from chennai to Pondicherry.

11:30am, Satellite shot of the huge cloud mass of Cyclone Thane .. http://ow.ly/i/oARv

Cyclone Thane nearing 220km range from chennai and Pondicherry and showing NO sign of weakening ... http://ow.ly/i/oARd

@isaakshi >> 10:20am, Radar image showing the EYE of Cyclone Thane at around 250km S-E of chennai .. http://ow.ly/i/oAzf

@isaakshi >> People along Coast from Chennai to Pondicherry & Cuddalore take care !! Cyclone Thane is not showing weakening and moving !

Report as on 10 am (IST) Thursday:

"Thane" moves West, draws closer to Chennai, being just 300 kms ESE of the city. (12N and 83E).

Strength maintained at 980 mb, and core surface winds roaring at 130 kmph. 

Chennai receiving persistant drizzle since last night. Rain intensity to increase from mid day, with thunder. Wind speed likely to touch 40-50 kmph today.

But, the system likely to start weakening from tonite.

Next update at 12 noon.

chennai - Continuous strong drizzles and sharp showers are approaching city from E-S-E .. expected to reach in another 1 hr

chennai - Ground winds are clocking around 25 km/hr Max.. .. http://ow.ly/i/oAr1

chennai - Winds speeds at the height above 500m above sea level are touching a massive 60 to 100 km/Hr .. http://ow.ly/i/oAr1

Eye of Cyclone Thane is now around 250km East of Pondicherry !! .. http://ow.ly/i/oApY

WoW !! Take a look at the latest Radar image showing the eye of Cyclone Thane ... tracking straight to Pondicherry .. http://ow.ly/i/oApY

Recent Wind Speed of various Cyclones in CHENNAI ... http://ow.ly/8cHlX

RT @markiv_in: @weatherofindia Sound from wind strange and scary!! God save us!!

@sanjaybalram >> Here's a guide to "tropical cyclone severity" ... http://ow.ly/8cHiH

HOT Maharastra !! On 28-Dec, 35.0°C has been recorded at Bhira ( Maharashtra)

chennai - Ground winds from W-N-W reaching upto 25 km/hr is already over City ... http://ow.ly/i/oAld

Presently the outer edge of Cloud mass of Cyclone Thane has touched N. coastal Tamilnadu , chennai ... http://ow.ly/i/oAkQ

Chennai - will miss the FULL grunt of the cyclone Thane ... http://ow.ly/8cH31

Cyclone Thane - Still a category 1 cyclone ... 300 km away from Pondicherry coast .. http://ow.ly/8cH1S

Cyclone "Thane" - Slowly crawling W-S-W ! Now Pondicherry and Cuddalore coast is the target!

Position, 8:30am :: 11:53:59 N and 82:18:00 E
Winds :: reaching upto 120 Km/Hr
Pressure :: 982mb
* Still a category 1 cyclone.
* 300 km away from Pondicherry coast.
* Chennai - will miss the FULL grunt of the system.
* Showers and winds to increase after 1pm ALL along N, central Tamilnadu coast.

Latest Satellite IR shot, 8am
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JTWC warning and projected path, 8:30am
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290300Z POSITION NEAR 11.9N 82.3E.
TROPICAL CYCLONE (TC) 06B (THANE), LOCATED APPROXIMATELY 160 NM EAST-
SOUTHEAST OF CHENNAI, INDIA, HAS TRACKED WESTWARD AT 07 KNOTS OVER 
THE PAST SIX HOURS. THE CURRENT POSITION IS BASED ON RADAR IMAGERY 
FROM CHENNAI, INDIA, A RECENT SATELLITE FIX FROM PGTW, AND A 282221Z 
SSMI IMAGE. THE INTENSITY ESTIMATE OF 75 KNOTS IS CONSISTENT WITH 
DVORAK T-NUMBER VALUES FROM THREE REPORTING AGENCIES RANGING FROM 65 
TO 77 KNOTS. THE DEEPEST CONVECTION REMAINS ALONG THE WESTERN AND 
SOUTHERN PERIPHERIES OF WELL-DEFINED LOW LEVEL CIRCULATION CENTER 
(LLCC) EVIDENT IN THE 282212Z SSMI IMAGE. RADAR REFLECTIVITY DATA 
SHOWS A SYMMETRIC LOW TO MID-LEVEL EYE FEATURE APPROXIMATELY 40 NM 
IN DIAMETER. TC 06B CONTINUES TO TRACK WESTWARD UNDER THE STEERING 
INFLUENCE OF A SUBTROPICAL RIDGE (STR) POSITIONED TO THE NORTH OF 
THE CYCLONE AND SHOULD CONTINUE TRACKING WESTWARD UNTIL MAKING 
LANDFALL JUST PRIOR TO TAU 24. THE CYCLONE LIES TO THE WEST OF AN 
UPPER-LEVEL ANTICYCLONE. THE UPPER-LEVEL ENVIRONMENT IS MARGINAL, 
WITH FAVORABLE BUT DECREASING RADIAL OUTFLOW AND INCREASING VERTICAL 
WIND SHEAR. THE CYCLONE IS ALSO MOVING OVER WATERS WITH LOWER HEAT 
CONTENT THAT SHOULD, ALONG WITH INCREASING VERTICAL WIND SHEAR AND 
DECREASING OUTFLOW, INDUCE SOME WEAKENING PRIOR TO LANDFALL. AFTER 
LANDFALL, INTERACTION WITH ROUGH TERRAIN WELL INLAND FROM THE 
RELATIVELY FLAT COASTAL AREA WILL LEAD TO STEADY DISSIPATION. ASIDE 
FROM THE WEBER BAROTROPIC MODEL, WHICH TRACKS THE CYCLONE POLEWARD 
INTO THE STEERING RIDGE, AND THE UK MET OFFICE MODEL, WHICH HOLDS 
THE SYSTEM TOO WEAK IN BOTH THE ANALYSIS AND FORECAST AND DEPICTS AN 
ERRONEOUS SOUTHWESTWARD TRACK WITH THE LOW-LEVEL FLOW, THE NUMERICAL 
MODEL GUIDANCE IS IN GOOD AGREEMENT WITH THE CURRENT FORECAST. 
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 290000Z IS 22 FEET.

IMD warning, 7:30am
------------------------------------------------------------

Very Severe Cyclonic Storm THANE over southwest Bay of Bengal:-Cyclone Warning for north Tamilnadu and south Andhra Pradesh coast : Orange Message

The very severe cyclonic storm THANE over southwest Bay of Bengal moved west-southwestward and lay centered at 0530 hrs IST of today, the 29^th December 2011 near latitude 12.3⁰N and longitude 83.0⁰E, about 300 km east-southeast of Chennai (Tamilnadu) and 480 km north-northeast of Trincomalee (Sri Lanka). The system is likely to move westwards and cross north Tamil Nadu coast between Nagapattinam and Chennai, close to Puducherry around morning of 30^th December 2011. However, as the cyclonic storm will come further close to coast, there is probability of slight weakening before landfall.

RT @gravikumar: we've been seeing nice drizzles around Adyar, Chennai area since early this morning. Its also windy and totally a chill.

Recent Wind Speed of various Cyclones in CHENNAI

Will Very Severe Cyclone Thane beat all the above records so far it has registered 37 km/hr winds without even coming close to the coast.

1. Cyclone Jal 47 km/hr (7/11/2010)
2. Cyclone Laila 42 km/hr (19/5/2010)
3. Cyclone Nisha 42 km/hr (26/11/2008)
4. Depression BOB 08 40 km/hr (28/10/2007)
   
5. Depression BOB 07 45 km/hr (27/09/2007)
6. Cyclone Ogni 50 km/hr (28/10/2006)

Other cyclones in last 20 years when chennai witnessed 100 km/hr winds

1. On 6th, December 1996 (Tropical Cyclone 08B) - a Cyclone which crossed Chennai produced 100 km/hr winds
2. On 31st, October 1994 (Severe Cyclonic Storm BOB 03) - a cyclone which crossed Chennai brought 120-140 km/hr winds

For more visit www.tamilnaduweatherman.blogspot.com

Cyclone Thane Update - Cyclone Thane now Very Severe Cyclone with Winds speed over 150 km/hr

The status of Cyclone Thane
-----------------------------------
Date and Time of issue - 011.30 PM (28.12.2011)
IMD Scale - Very Severe Cyclonic Storm
Intensity – 4.4
Pressure – 980 mmb
Wind Speed – 75 kts (140 kmph)
Location – 12.23 N 83.84 E
Weakening - OFF
Rapid Weakening - OFF
Landfall - Around Pondicherry
Crossing Date - 30th December Morning

For more on the tracks and Imagery visit www.tamilnaduweatherman.blogspot.com

Recent Tamil Nadu Cyclones and its awesome radar images

Deep Depression (October 26-29, 2005)








































Significant amounts of rainfall recorded in Tamil Nadu are

27-10-2005
Chennai 27, Chennai AP 21, and Red Hills 13 cm

28-10-2005
Tiruvallur and Poondi 27 cm, Red Hills 24 cm, Chembarambakkam 23 cm, Tamaraipakkam 22 cm, Chennai, Cholavaram, Korattur 16 cm, Chennai AP 15 cm and Tambaram 13 cm
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Cyclone Baaz (November 28- December 02, 2005)








































Significant amounts of rainfall recorded in Tamil Nadu are

03-12-2005
Tambaram 31 cm, Chennai AP 28 cm, Thiruvallur and Chennai 23 cm, Arakonam 21 cm, Sriperumbudur 18 cm, Chengalpattu and Red hills 15 cm, Tiruttani 14 cm, Poondi 13 cm, Ponneri 11 cm
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Cyclone Fanoos (06-10 December , 2005)













































Significant amounts of rainfall recorded in Tamil Nadu are

11-12-2005
Ramanathapuram 35 cm, Panruti 14 cm, Senkottai 13 cm, Pamban, Kamudhi and Madhukar 12 cm, Kadaladi 11 cm and Ambasamudram 10 cm

12-12-2005
Ambasamudram 17 cm, Senkottai 13 cm and Paramakudi 12 cm
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Depression (27-29 October, 2007)









































Significant amounts of rainfall recorded in Tamil Nadu are

29.10.2007

Chembarambakkam 18 cm, Red Hills 16 cm, Chennai and Chennai AP 14 cm, Cholavaram and Poondi 10 cm

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Cyclone Nisha (25-27 November, 2008)









































Significant amounts of rainfall recorded in Tamil Nadu are

25.11.2008

Thiruvidalmarthu 30 cm, Rameswaram 23 cm, Orathanadu 19 cm, Mayiladuthurai 17 cm, Tirukkattupalli and Pamban 15 cm, Tiruvaiyar and Thanjavur 14 cm, Sirkali and Kollidam 13 cm, Papanasam and Ramanathapuram 12 cm, Kumbakonam and Kattumannarkoil 11 cm, Sethiyathope Anicut and Chidambaram 10 cm.

26.11.2008
Orathanadu and Vedaranniyam 33 cm, Parangipettai and Chidambaram 28 cm Thiruvidalmarthu and Mayiladuthurai 26 cm, Sirkali 25 cm, Kattumannarkoil 24 cm, Cuddalore 22 cm, Sethiyathope Anicut and Kollidam 21 cm, Tiruthuraipndi and Nagapattinam-20 each, -18 each, Karaikal 19 cm, Puduchhery, Adirampattinam Tiruvarur and Kodavasal 18 cm, Nannilam 17 cm, Valangiman, Kumbhakonam, and Tarangambadi 15 cm, Needamangalam and Chembarabakkam 14 cm, Rameswaram, Papansam, Pattukkottai, Mannargudi, Muthupet and Jayamkondam 13 cm, Korattur, Adiramapatnam and Srimushnam 12 cm, Chryyur, Red Hills and Chennai AP 11 cm, Thanjavur, Anna University, Poondi, Cholvaram, Marina and Chennai 10 cm

27.11.2008
Orathanadu 66 cm, Thanjavur 53 cm, Vedaranyam 42 cm, Adiramapattinam 33 cm, Muthupet 30 cm, Kurungulam 28, Kumbakonam 26 cm, Pattukottai 23 cm, Madukkur 21 cm, Tiruvidaimarudur 20 cm, Thiruvaiyaru 19 cm, Papanasam, Tirukkattupalli 18 cm, Chennai AP, Chennai and Chembarabakkam 14 cm, Korattur 12 cm, Nagapattinam, Red Hills, Pondicherry 11 cm, Poondi, Cholavaram, Cuddalore, Tiruchy and Tiruttani 10 cm

28.11.2008

Chennai AP 28 cm, Chembarabakkam 24 cm, Anna University 23 cm, Cuddalore 22 cm, Puduchhery 21 cm, Tiruvallur 20 cm, Tamaraipakkam 19 cm, Chengelpet, Ayiyalur, Tanjavur, Vellore-17 each, Pallipattu, Villupuram, Poonamallee, Muthupet, Poondi, Korattur 16 cm, Lalgudi, Chettykulam, Padallur, Red Hills, Tiruchchirapalli 15 cm, Tozhudur, Nungambakkam, perumbalur, Parangipettai, Srimushnam, Tiruvaiyaru, Cholavaram, Ponneri, Vanur, Chennai 14 cm, Tambaram, Tirukkattupalli, Utheriramerur, Kodavasal, Gingee, Kancheepuram-13 each, kollidam, Grand Anicut, Arni, Polur, Tirutani, Vandavasi, Tindivanam, Sriperumbudur-12 each, Thiruvidalmarthu, Chryyar, Samayapuram, Ulundurpet, Marina (DGP Office)-11 each, Tiruchi, Tiruvarur, Valangiman, Vembavur, Kumbhakonam, Orathanadu 10 cm

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Cyclone Laila (17-22 May, 2010)





















































Significant amounts of rainfall recorded in Tamil Nadu are

20-05-2010
Ponneri 17 cm, Cholavaram 13 cm, Chennai, Anna University and Tamaraipakkam 11 each, Marina DGP Office 10 cm

For more visit - www.tamilnaduweatherman.blogspot.com