Thursday, November 05, 2009

Rains continue to lash TN

Sharp spells of rains continued to lash different parts of the state due to a trough along the Tamil Nadu coast.

The regional weather office has forecast more rains over the next two days. It said isolated heavy rain was likely to occur over North Coastal Tamil Nadu and South Tamil Nadu besides Puducherry.

According to weather observations at 8.30 am today, Rameswaram recorded eight cms rainfall followed by Mayiladuthurai and Tarangambadi (both Nagapattinam district) at 6 cm each.

Chennai and its suburban areas also received rainfall, inundating low-lying areas.

Here's IMD report for today::
Northeast monsoon has been vigorous over Coastal Tamilnadu and active over Interior Tamilnadu.

Rainfall occurred at most places over Tamilnadu and at a few places over Rayalaseema and Kerala. Isolated rainfall occurred over South Interior Karnataka and Coastal Andhra Pradesh. Mainly dry weather prevailed over Telangana and Dry weather prevailed over Lakshadweep, Coastal and North Interior Karnataka.

The following stations recorded very heavy-to-heavy rainfall in centimetres:

Nagapattinam 18, Chennai and Thozhudur (Cuddalore dt) 15 each, Kollidam (Nagapattinam dt) 14, Chembarambakkam (Tiruvallur dt) and Chidambaram 13 each, Chennai Airport and Sirkali (Nagapattinam dt) 11 each, Tambaram, Nannilam (Tiruvarur dt) and Tarangambadi (Nagapattinam dt) 10 each, Cuddalore, Parangipettai, Karaikal. Sethiyathope (Cuddalore dt), Ambasamudram and Manimutharu (both Tirunelveli dt) and Vandavasi (Tiruvannamalai dt) 9 each, Anna University (Chennai dt), Chengalpattu and Maduranthagam (both Kancheepuram dt), Kattumannarkoil (Cuddalore dt) Thiruthuraipoondi (Thiruvarur dt) and Nellore 8 each and DGP Office (Chennai dt), Puducherry Airport, Poonamalle and Cholavaram (both Tiruvallur dt), Kodavasal (Tiruvarur dt), Mayiladuthurai (Nagapattinam dt), Vedranyam and Viralimalai (Pudukottai dt) 7 each.

The other chief amounts of rainfall recorded in Centimetres are:

Palayamkottai, Kancheepuram, Kallakurichi (Villupuram dt), Villupuram, Sathankulam (Tuticorin dt), Perambalur, Vembavur (Perambalur dt), Udayagiri and Atmakur (both Nellore dt) and Sathyavedu (Chittor dt) 6 each, Sriperumpudur and Uthiramerur (both Kancheepuram dt), Virudhchalam and Panruti (both Cuddalore dt), Gingee, Ulundurpet and Vanur (all Villupuram dt), Mannargudi and Muthupet (both Tiruvarur dt), Tiruvarur, Ayikudi (Tirunelveli dt), Pappireddipatti (Dharmapuri dt) Thalli (Krishnagiri dt), Udumalpet (Coimbatore dt), Coonnor, Natham (Dindugal dt), Kavali, Vinjamur and Rapur (both Nellore dt) and Mancompu (Allapuzha dt) 5 each, Tenkasi (Tirunelveli dt), Sankarapuram and Tirukoilur (both Villupuram dt), Adiramapattinam, Maniyatchi and Ottapidaram (both Tuticorin dt), Ketty (Nilgiris dt), Jayamkondam (Ariyalur dt), Marungapuri (Tiruchirapalli dt), Badvel (Cuddapah dt) and Srikalahasthi (Chittoor dt) 4 each, Cheyyur (Kancheepuram dt), Poondi (Tiruvallur dt), Srimushnam (Cuddalore dt), Orathanadu and Peravurani (both Thanjavur dt), Valangaiman (Tiruvarur dt), Alangudi, Illupur and Gandarvakottai (all Pudukottai dt), Pamban, Nanguneri (Tirunelveli dt), Kovilpatti (Tuticorin dt), Kanyakumari, Cheyyar (Thiruvanamalai dt), Ambur (Vellore dt), Thirupattur, Palacode (Dharmapuri dt), Kadavur (Karur dt), Chettikulam and Padalur (both Perambalur dt), Manaparai (Tiruchirapalli dt), Tiruchirapalli Airport, Mettupatti and Peraiyur (both Madurai dt), Sathur (Virudhunagar dt), Chatrapatti and Vedasandur (both Dindugal dt), Dindugul and Kodaikanal, Seetharamapuram, Venkatagiri Town, Gudur, Tada (all Nellore dt) and M.M. Hills (Chamrajnagar dt) 3 each, Ponneri (Tiruvallur dt), Grand Anaicut, Kumbakonam, Papanasam and Pattukottai (all Thanjavur dt), Thanjavur, Aranthangi, Keeranur and Illupur (all Pudukottai dt) , Pudukottai ,Manamelkudi, Paramakudi (Ramanathapuram dt), Radhapuram, Sankarankoil and Shenkottah (all Tirunelveli dt), Surangudi, Srivaikundam and Tiruchendur (all Tuticorin dt), Nagerkoil, Chengam and Polur (both Thiruvanamalai dt), Thiruvanamalai, Alangayam , Gudiyatham and Vaniyambadi (all Vellore dt), Soolagiri (Krishnagiri dt), Yercaud, Dharapuram (Tiruppur dt), Uthagamandalam, Kothagiri (Nilgiris dt), Panchapatti (Karur dt), Tiruchirapalli, Madurai Airport, Thirumangalam and Usilampatti (both Madurai dt), Andipatti, Periyakulam and Periyar Dam (all Theni dt), Thirupuvanam , Manamadurai and Devakottai (all Sivaganga dt), Thiruchuzhi and Watrap (both Virudhunagar dt), Virudhunagar, Nilakottai (Dindugul dt), Kandukur (Prakasam dt), Jamalamadugu (Cuddapah dt), CIAL Kochi, Nedumangadu (Thiruvananthapuram dt) and Srirangapatnam (Mandya dt) 2 each and Tiruvallur, Thamaraipakkam (Tiruvallur dt), Thirukatupalli and Thiruvaiyaru (both Thanjavur dt), Arimalam and Karambakudi (both Pudukottai dt), Kamudhi (Ramanathapuram dt), Ramanathapuram, Tondi, Boothapandi, Mylaudi and Pechipparai (all Kanyakumari dt), Arani and Sathanur Dam (both Thiruvanamalai dt), Arakonam and Melalathur (both Vellore dt), Anchetty, Barur, Denkanikottai, Hosur and Royakottai (all Krishnagiri dt), Krishnagiri, Namakkal, Sendamangalam (Namakkal dt), Salem, Omalur and Vazhapadi (both Salem dt), Avinashi and Sulur (both Coimbatore dt, Tiruppur, Kangeyam and Satyamangalam (both Erode dt), Naduvattam (Nilgiris dt), Chittampatti (Madurai dt), Madurai, Bodinayakanur, Gudalur and Uthamapalayam (all Theni dt), Ilayankudi, Karaikudi and Tirupattur (all Sivagangai dt), Aruppukottai, Rajapalayam and Srivilliputhur (both Virudhunagar dt), Palani (Dindugal dt) Bandipura (Chamrajnagar dt), Bangalore, Tirupathi Airport, Muddanur and Kamalapuram (both Cuddapah dt), Haripad (Alapuzha dt), Peermedu (Idukki dt), Thiruvananthapuram and Thiruvananthapuram Airport 1 each

Adilabad recorded the lowest minimum temperature of 13 degree Celsius in the plains of the region.
Around 12-Nov-09 a LOW pressure emerging over East arabian Sea... near Goa... Unusual phenomenon.
GFS predicts HEAVY showers for TN coast for another 48 hrs.
Satellite shows heavy activity over south-central Bay, south of Tamilnadu and along south coastal TN ..
Chennai - If the 6pm window is not open for Rain then we'll have rain after midnight around early morning.
Chennai: Clear skies, bright sun and warm all of a sudden after 3pm... A break now and more showers 100% after 6 pm.
North-east monsoon weak over Kerala ..
Chennai - Thunder cells lining up over the Sea from north-east to south-east... Heavy intermittent showers ahead.
RT @praveensudarsan: it's a rainy climate n chennai!! the rythm of chennai changing
Chennai - Sharp shower now 9:47am in Polichalur (Pallavaram).. more heavy rain spells coming up thru the day!
RT @fzil: When it rains in Chennai for eight hours non-stop, you're trapped in a swamp for eight days non-stop!
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Chandigarh:: Get ready for a warmer week ahead ..before the Winter sets in...

Oil Fire in Jaipur (India)

A fire at an oil depot south of Jiapur, India, that began on October 29, 2009, was still burning on November 2 when the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this image. At the time of this image, winds were pushing a black plume of smoke southeast toward the Banas River, however, at other times, the smoke blew northward into the city.

Typhoon Mirinae

Typhoon Mirinae raked across the Philippines on October 30 as a Category 2 typhoon, killing 20 people, reported the Associated Press. It was the third typhoon to hit the Philippines in 6 weeks. The storm came ashore over Vietnam on November 2, where it caused severe flooding and left 23 people dead, said the Associated Press.
Typhoon Mirinae was fading from a typhoon to a tropical storm when the QuikSCAT satellite captured the data used to make this image on November 1, 2009. The image shows wind speed and direction, revealing the storm’s structure. Although Mirinae was weakening, its winds maintained the classic spiral structure associated with well-organized tropical cyclones. The strongest winds, shown in purple, are on the northwest side of the eye, visible as an area of calmer winds in the center of the storm. A broad field of strong winds, red, spiral around the eye in clear bands. The barbs indicate wind direction, and white barbs point to areas of heavy rain.
QuikSCAT monitors wind speed with a radar that sends out pulses of microwave energy and listens for the echo after the pulse bounces off the wind-roughened ocean surface. Scientists translate radar signals into estimates of wind speed by matching the radar echoes to physical measurements collected from buoys at the same time and place.
Cyclone-strength wind speeds are rare, however, and scientists generally don’t have enough matching buoy observations to convert wind speeds above roughly 50 knots. Intense rain rippling the ocean’s surface can also interfere with the radar signal. Because of these limitations, QuikSCAT images don’t show absolute, maximum wind speeds. Instead, they give forecasters a valuable picture of the wind structure within the storm, for example, revealing whether a storm has a strong or a weak eye and how large an area is experiencing tropical-storm-strength winds.

Arabian Sea ‘low’ likely by Nov 8

The India Meteorological Department (IMD) has hinted at the possibility of a low-pressure area over the southeast Arabian Sea off the Kerala coast over the next five days.

According to the European Centre for Medium-Range Weather Forecasts (ECMWF), it would likely be a case of an already existing ‘low’ just to the south of Sri Lanka migrating into the region.


ECMWF updates on Tuesday said that this ‘low’ may materialise by this weekend. The system would slowly track north-northwest to emerge into south-east Arabian Sea over the next two days.

The system is later shown as tracking to the north along the Kerala coast and intensifying in the process until November 11 before coming under the ‘pull’ force of a newly developing convection over south-southwest Arabian Sea.

This ‘drag effect’ from below is seen as gradually weakening the strength of the system off the Kerala coast even as the former consolidates further the churn around itself.

The arrival of a westerly trough around November 10 would see both the systems getting wrapped up within the larger trough.

No two systems within a single large trough can ramp up in strength simultaneously, all other conditions remaining the same. In this manner, the weather system along the Kerala coast would be made to ‘blink first.’

Forecast updates for the week ending November 10 put out by the US National Centres for Environmental Prediction say that coastal Tamil Nadu would continue be the biggest beneficiary of the seasonal rains.

Interior Tamil Nadu and adjoining Kerala are shown as sharing the spoils to some extent, which are expected to be above normal during this week of the year under reference.


Meanwhile, an IMD outlook said that isolated to scattered rainfall activity will get triggered over south peninsular India and Andaman and Nicobar Islands during the next 24 hours and increase thereafter.

IMD outlook until Sunday said that scattered to fairly widespread rainfall is expected over south peninsular India and coastal areas of Orissa and Andhra Pradesh.

Isolated heavy falls are likely over Tamil Nadu and south coastal Andhra Pradesh.

The Chennai Met Centre’s outlook until Thursday said that rain or thundershowers are likely at many places over coastal Tamil Nadu and Puducherry and at a few places over interior Tamil Nadu and Lakshadweep.

Isolated rain or thundershowers are likely over coastal Andhra Pradesh, Rayalaseema, Kerala and south interior Karnataka.

A warning valid for the period said that isolated heavy rain is likely to occur over coastal Tamil Nadu and Puducherry.

Meanwhile, over north India, maximum day temperatures were above normal by 3-5 degree Celsius over Gujarat, Rajasthan, west Madhya Pradesh and the North-East and by 2-4 degree Celsius over the west coast, coastal Andhra Pradesh, south peninsula and interior Maharashtra.

Satellite cloud imagery showed convective clouds over parts of southwest and west-central Bay of Bengal. Low and medium clouds were seen over parts of northwest, the North-East States and peninsular India.
Vietnam storm death toll rises to 57 as authorities step up rescue and relief operations ..
RT @scarol4u: Its raining madly all day... Makes me feel lazy... But it makes chennai as COOL as possible... SHOWERS OF RAIN.. B-E-A-UTIFUL
RT @simplykhalid: Heavy rain lashed chennai.y no holiday for schools and colleges?
Latest satellite shows a very active Bay just east of Chennai ..
Rains will subside after midnight of Friday, 6-Nov-09
Chennai - From early morning rain rate has reduced but VERY heavy showers forecast for all thru day. We might have a break till 10am.