As expected on 4th awesome start along the coastal areas. South TN will get heavy rains too

November 4, 2020
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With an UAC in SW Bay near Sri Lanka, we  can see the convergence along the coastal belts in mornings with sea being warmer than land.

Once day starts heating up, the easterlies will move in as the convergence shifts inland. So on a single day, you can see how the rains happen with the easterlies associated convergence.

This will be the pattern of rains for next 3-4 days till 8th November then we head for mini-break again.

Today in Coastal areas:

Tiruvallur, Chennai, Pondy, Cuddalore, Nagai, Tiruvarur, Karaikkal, Ramanathapuram, Thoothukudi will get moderate rains from the easterlies associated convergence.

Today in South Tamil Nadu:

Interior Ramanathapuram, Madurai, Interior Thoothukudi, Virudhunagar, Tirunelveli, Thenkasi, Theni, Kanyakumari will get rains

Today in West Tamil Nadu:

Dindigul, Tiruppur, Nilgiris, Coimbatore rains will continue like the past few days.

Heavy rains

Theni, Virudhungar, Thenkasi, Dindigul and Tirunelveli has chance of heavy rains in one or two places.

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Perfect day for Rains in Chennai, KTC, Vellore, Ranipet, Tvmalai and Pondy

June 28, 2020

We have UAC in the lower to mid levels 700 hpa (3.1 kms) from surface, located north east of Chennai, it brings perfect convergence zone for North TN. Morning itself we are seeing ideal conditions with dark clouds lurking around.

As day goes on with more heating things will become much better for rains in North TN which includes KTCC (Kanchepuram, Tiruvallur and Chennai & Chengalpet). The other districts such as Tiruvannamalai, Vellore, Pondy, Villupuram, Tirupattur, Krishnagiri, Salem and Dharampuri will also be in line of rains.

Negatives:  The steering winds are slow. But if we fall on path of storms, semma damal dumeel with stand and deliver rains.

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A perfect day from Delta to Chennai coast, break rains break rains for KTCC

November 11, 2022

Present Position of low

Low is still positioned East North East of Lanka and since it is far away from our coast, the coastal belts are getting heavy rains, Mayiladuthurai district is being pounded as we post this. Today too Delta to Chennai coast will be in hot spot while nearby districts like Villupuram, Ariyalur, Perambalur, Thanjavur, Salem, Thiruvannamalai, Ranipet, Vellore will all get moderate rains.

When interiors, west and south TN will get

When low moves close to nagai coast, then the winds will enter into the interiors and that is the time interiors and west will get heavy rains, till that time, they will get only light to moderate rains. We can see how convergence is limited to coast in today wind pattern. So konkam patience for western, south and interior heavy rains, while you can enjoy the showery moderate rains today. The low is expected to push a pulse into Arabian sea and there near Kerala coast low will intensify and move away, so pull effect rains is possible on 13/14th November.

Chennai what is expected
On day 1, widespread rains ranging from 6-9 cm have recorded in the city, we have estimated that around 30 cm is expected to fall over 11-14th, November. With 3 more days to go and heaviest rains ahead of us, the target is expected to be achieved. Chennai and its co region of KTC will get breaks with rains through out the day and as usual the moon time to morning times, the rains during this period will be the peak ones. The spells will be of varying intensity. Even in day time sudden burst will happen with low being near the coast. Right now if you can see the above images, we can see line of clouds for 100s of kms north east of Chennai.

Rainfall in North Tamil Nadu on 11.11.2022
—————
in mm (min 40 mm)

Mayiladuthurai
——-
Kollidam – 111
Sirkali – 81
Sembanarkoil – 71
Mayiladuthurai – 65

Chennai (min 50 mm)
——–
Thiru vi ka Nagar (GCC) – 98
Ambattur OT (GCC) – 88
Aminjikarai (GCC) – 86
Tondiarpet (GCC) – 86
Anna Nagar West (GCC) – 85
Kolathur (GCC) – 84
Meenambakkam (GCC) – 81
Kodambakkam (GCC) – 79
Valluvar Kottam (GCC) – 77
Maduravoyal (GCC) – 75
Kathivakkam (GCC) – 75
Taramani (IMD) – 72
Adyar Eco Park (GCC) – 71
Manali (GCC) – 71
Vilivakkam (IMD) – 70
Adyar (GCC) – 68
Ice House (GCC) – 63
Manali New Town (GCC) – 62
Velacherry (GCC) – 62
Perungudi (GCC) – 61
Nandanam (IMD) – 62
Todairpet (Revenue) – 59
Ambattur (Revenue) – 57
Madipakkam (GCC) – 57
Alwarpet (CMWSSB) – 52
Aynavaram (Revenue) – 50
Uthandi (GCC) – 50
Alandur (CMWSSB) – 50

Note: Revenue stations are 6.00 am readings while GCC and IMD are 8.30 am readings

Cuddalore
———–
Parangipettai – 99
Cuddalore (IMD) – 84
Annamalai Nagar – 75
Cuddalore Collectorate – 69
Chidambaram – 59
Vridhachalam – 48
Kuppanatham – 47
Bhuvanagiri – 42

Nagapattinam
———-
Velankanni – 83
Thalanayar – 71
Thirupoondi – 68
Vedaranyam – 65
Nagapattinam (IMD) – 60
Thirukuvalai – 59
Kodiayakarai – 40

Tiruvallur
——–
Ponneri – 69
Cholavaram – 61
Velappanchavadi (ACS College) IMD – 60
Redhills – 54
Jamine Koratur – 47
Thamaraipakkam – 47
Avadi – 45
Kadambathur – 44
Tirur – 41
Poonamallee – 40

Kancheeepuram & Chengalpet
—–
Mahabalipuram, Chengalpet – 65
Potheri (Katupakkam), Kancheepuram (IMD) – 56
Chembarabakkam (IMD) – 51
Kattankolathur, Chengalpet – 49
Kundrathur, Kancheepuram – 43
Chithamur, Chengalpet – 42
Kancheepuram, Kancheepuram – 40

Others
—–
Karaikkal, Karaikkal – 69
Thiruthuraipoondi, Tiruvarur – 41

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