Kerala Rainfall on 12 to 15th May 2021
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A perfect day from Delta to Chennai coast, break rains break rains for KTCC
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
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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
Another very good day for Thunderstorms in Tamil Nadu
Thunderstorms to continue in Tamil Nadu
The dream days for Tamil Nadu thunderstorms has been continuing, today too pop-up has been seen at many districts. Earlier in the day, Ramanathapuram got surprise rains. The UAC in South Andhra has slightly moved up, has become elongated and has merged with east-west shear zone with two UAC in either side of the zone.
Reason for Rains
For rains in Tamil Nadu in leeward side, heat always matters irrespective or UAC or whatever. Without heat no rains will be seen in Tamil Nadu leeward side regions most of the times. In Break monsoon period like now, an UAC in southern Bay of Bengal always forms, but it wont give rains like north east monsoon, instead an UAC presence nearby can enhance the longevity of the thunderstorms with supportive atmospheric conditions.
How long will this dream Thunderstorms last in Tamil Nadu leeward side
The monsoon winds in Arabian sea are going to get activated from July 3rd with a monsoon low moving into land via Chattisgarh—>Maharashashtra/Madhaya Pradesh –> Gujarat. This will make wind unfavorable for convergence in Tamil Nadu Veppa Salanam rains, though there will be some thunderstorms we can expect them to be widepread ones.
KTC Rains to continue till 2nd July
With KTC having convex shoreline, we always have advantage with respect to convergence of winds when sea breeze enters after a hot day, the rains may happen in northern suburbs or southern suburbs or even right over like yesterday. So next 2 days (till 2nd July) and today we have chance for rains in KTC belt. As usual, which place will get rains is decided by luck.
Tomorrow massive rains has been picked by models for KTC zone, lets wait and see if they retain the rains and change it to a lesser quantum.
Rainfall in Chennai and KTC (100 kms zone) on 29.06.2020
in mm (min 5 mm)
Sholingur – 58
Uthukottai – 43
Tiruttani PTO – 37
Kaveripakkam – 33
Madhavaram – 36
RK Pet – 35
Kolapakkam – 21
Walajah – 18
Nungambakkam – 17
Gumdipoondi – 17
Mugalivakkam – 16
Tiruttani – 14
Anna University – 15
Thiruvottiyur – 15
Taramani – 11
Perungudi – 10
Madurantagam – 7
KK Nagar – 6
Ponneri – 6
Meenambakkam – 6
Alandur – 6
Shenoy Nagar – 6
Ennore – 5
Shollinganallur – 5
DGP Office Marina – 5
Due to time constraints, rainfall data was not updated in the respective page. It will be done by tonight.