Tuesday, December 18, 2007

"94B" moves in, Rain thru the day!

The tropical low system "94B" which was far away from land but it moved quickly than anticipated.
From morning, there was non stop sharp showers, and it's still continuing (10:12PM)
The amount of rainfall till now is 36.2mm from 12AM 18-Dec-07.
Monthly Rain - 116.2mm (Dec. normal - 138 mm) (we are nearing the normal average)
Rain is occationally companied by medium gusts, today's high wind 32.2km/hr at 2:36am.
Looking at the prevailing conditions the rainfall will continue till evening tomorrow(19-Dec-07).
Take a look at the satellite pic at 2:35 PM IST

and now very latest

The most of the rainfall has switched to south tamilnadu.

Good rain from early morning

The low pressure system "94B" is close to northern tamilnadu and it has started giving good rains.
Chennai received light showers in the evening (17-Dec-07) after that sharp showers with mild wind started again around 5 AM (18-Dec-07).
Take a look at the latest infrared pic

you can see that lots of showers are yet to come.
Hoping for a good full day of rain.

Monday, December 17, 2007

Showers from evening, due to "94B"

From morning it was cloudy with fast moving clouds and intermitent high winds.
Wind direction is from North-North-East... this is good, take a look at the wind direction summary.

Around 5:30 Pm in the evening it started as a drizzle along with high winds, now (7:46PM) it has become more heavier and intermitent.
These showers may be due to the tropical low "94B", which is nearing northern tamilnadu.
The possibility for this system to become as Depression or Cylcone is very less, because the system has started to weaken over the sea itself.
take a look at the latest visible shot from F-15 overpass.

Let's hope this system crosses us with this present strength. If this system prolongs and moves west then the rain rate might increase from mid-night and will be at the max tomorrow thru the day.

Sunday, December 16, 2007

Agreement Reached on the Bali Roadmap


It was one day late but countries achieved a major breakthrough on international climate change action at 2:31pm Bali time on Saturday. It was not without high drama featuring plenty of twists and turns along the way on a day when many delegates had planned to catch flights home.

It even took the special intervention of Indonesian President Susilo Bambang Yodhoyono and UN Secretary-General Ban Ki-moon to exhort delegates to complete what seemed like hopelessly deadlocked talks.

Yodhoyono called on countries to complete "the most difficult mile," of an "exhaustive marathon." He told delegates that we could not allow "the human race and the planet to crumble because we cannot find the right words."

The Secretary-General, who returned to Bali after a visit to Timor-Leste, said he was reluctant to speak again to the conference but that he was disappointed in the progress that had been made. "The hour is late. It is time to make a decision." He appealed to delegates not to "risk everything you have achieved so far."

After a morning of false starts and false hopes, miscommunications and misunderstandings, countries agreed on a roadmap to launch negotiations toward a global, comprehensive agreement to address climate change. The Bali decision sets out an agenda that frames the discussions that will take place over the next two years and sets a deadline of 2009 to complete the negotiations.

After agreement was reached, the Secretary-General issued a statement strongly welcoming the outcome and saying that the Bali Roadmap achieved all three of the main objectives. "The Bali Roadmap that has been agreed is a pivotal first step toward an agreement that can address the threat of climate change, the defining challenge of our time."

But the agreement did not come painlessly. On a key provision, concerning the obligations of developing countries in the future negotiations, India, speaking for developing countries, said that alternate wording had been agreed to during the night. And then Bangladesh said that language concerning the least developed countries and small island states had been omitted. The Philippines said the phrase "on the basis of equity" had been omitted. And then the United States said it could not accept the formulation that was put forward but offered to keep working until an agreement could be found.

Then South Africa, responding to the US, said developing countries had voluntarily moved to accept new obligations for their national actions on climate change that were "measurable, reportable and verifiable," a concession that only a year ago, he said, "would have been unthinkable." South Africa asked the US to reconsider its position.

Then an avalanche of countries took the floor in support of the developing country position, many asking the US to state their reservations separately and not block a consensus.

US Under Secretary of State Paula Dobriansky took the floor again and said the US wanted a roadmap and wanted to be part of the roadmap.

"We are very committed to long-term greenhouse gas emission reductions," and she said the US would work with other large emitters to halve global emissions by 2050. And then she said the US "will go forward and join the consensus," which was followed by a thunderous ovation.

"It feels like we are in a movie with lots of plots," said the delegate from Egypt.

After full adoption by the plenary, countries thanked the US for joining the consensus and thanked the secretariat of the Climate Change Convention and the Indonesian government for hosting the Conference.

Bali climate summit reaches agreement

BALI, Indonesia, Dec. 15 (UPI) -- The United States reluctantly has agreed to join a global effort to negotiate a new climate change treaty to reduce greenhouse gas emissions.

"We will go forward and join consensus," Paula Dobriansky, the head of the U.S. delegation said Saturday.

The United States, in a dramatic reversal, agreed to give poorer countries financial aid and clean technology after the U.S. delegation was booed in Bali at the two-week climate change summit, Britain's Telegraph reported Saturday.

The U.S. delegation did succeed, however, in getting the summit to scrap specific targets to reduce greenhouse gas emissions for itself and other industrial nations. The road map for the proposed treaty now calls for industrial nations to recognize "deep cuts in global emissions" will be needed by 2020, the Telegraph reported.

A new climate treaty, to be negotiated by the end of 2009 and enforced in 2012, would replace the Kyoto Protocol rejected by the United States six years ago.

Now it's "94B"

Take a look at the visible picture from F-15 overpass provided by US Navy

Read the Navy report about the system
AN AREA OF CONVECTION HAS PERSISTED NEAR 7.5N 87.5E,
APPROXIMATELY 450 NM EAST OF COLOMBO, SRI LANKA. ANIMATED
MULTISPECTRAL IMAGERY REVEALS A FULLY EXPOSED LOW LEVEL CIRCULATION
CENTER (LLCC) WITH BANDING CONVECTION ALONG THE NORTHERN AND WESTERN
PERIPHERY. THE CONVECTION IS DISPLACED 60 NM TO THE NORTH AND WEST
DUE TO MODERATE TO STRONG VERTICAL WIND SHEAR. A SYNOPTIC-SCALE
UPPER LEVEL ANTICYCLONE TO THE NORTH AND EAST IS PROVIDING GOOD
POLEWARD OUTFLOW FOR THE DISTURBANCE. MAXIMUM SUSTAINED SURFACE
WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS
ESTIMATED TO BE NEAR 1005 MB. DUE TO THE MODERATE TO STRONG VERTICAL
WIND SHEAR, THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT
TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS POOR.

In chennai, we had a mild day with North-North-westerly winds thru the day, and now (11:03PM) it's very calm.
Today's temperature Hi: 29.4°C @ 11:22am and Low: 25.7°C @ 5:06am
Humidity: Hi: 79% @ 1:33am and Low: 60% @ 11:24am, the humidity is on the high side.
Now take a look at the numerical forecast for next 48hrs.

this too suggests a weak "94B". but more to come at the end of this week..!!!

Saturday, December 15, 2007

What's this?

Take a look at the latest satellite pic

What's this? This system also has a swirl to it.
We'll get back to this tomorrow(16-Dec-07) morning.

Nothing for Chennai!

We (chennai people) did not get any benefit from the tropical disturbance "92B".
Seeing the satellite imagery there's still lot of activity over the south bay, so we might be in chance for getting some showers... early next week.
I'm not ruling out any showers for today! there's a 30% chance of rain today.

Friday, December 14, 2007

December - Bay of Bengal Cyclones

December 1-8,1972
Crossed Tamilnadu coast close to and north of Cudalore at 2330 UTC on 5th December and was within 50 km WNW of Cuddalore at 0300 UTCon December 6. Maximum wind speed recorded at Cuddalore was 111 KMPH to 148 KMPH (60-80) between 2230 UTC of 5th & 0230 UTC of 6th.80 People killed and 30,000 people rendered homeless in Madras due to flood.Total loss Rs. 40 crores.

December 4-11. 1981
Crossed West Bengal Coast near Sagar Island around 1300 UTC on December 10 and weakened into a depression on 11th morning over Bangladesh and into a low the same evening over Assam and Meghalaya.200 people died in 24 Parganas district of West Bengal One Million people affect in the districts of 24 Parganas.

01- 04 Dece. 1993
Crossed on 4th Nov. 30 Km north of Karaikal.100 People died in Tamil Nadu.

28 Nov.-06 Dec1996
crossed near Chennai around 2100 UTC of 6th Dec.1996.The cyclone persisted for 9 days which is reported to be very long life compared to any cyclone in the Indian Ocean. It caused severe damage to life and property.

"92B" inland and now "93B"

The Low pressure system "92B" moves inland and dissipates...
You can take a look at the latest satellite Infrared pic ... this shows clearly how fast the system has dissipated.
Yesterday's heavy rainfall records...
Nagapattinam and Sirkali (Nagapattinam dt) 13 each, Mayiladuthurai (Nagapattinam dt) 12, Vedaranyam, Karaikal, Orathanadu (Thanjavur dt) and Thiruvarur 11 each, Chidambaram (Cuddalore dt) 10, Thiruthuraipoondi (Tiruvarur dt) 9, Parangipettai, Tiruvidaimaruthur (Thanjavur dt) and Muthupet (Tiruvarur dt) 8 each and Cuddalore, Kattumannarkoil (Cuddalore dt), Adiramapattinam, Pattukottai (Thanjavur dt), Valangaiman and Kodavasal (both Tiruvarur dt) 7 each


Now the US navy is reporting another tropical disturbance "93B", it's very early stage so no comments now.