Financial Daily from THE HINDU group of publications
Thursday, May 26, 2005

Port Info

Group Sites

Industry & Economy - Climate & Weather

Monsoon expected to hit Andamans today

Vinson Kurian

Other ambient conditions in the Andamans are near consistent with the onset, evidenced best in the persistent cloud cover and the dominant southwesterlies.

Thiruvananthapuram , May 25

THE low pressure system located to the extreme southwest of the peninsula on Tuesday may have faltered, but things are just about falling in place for the onset of the southwest monsoon over the Andamans - the first port of call within the territorial waters - as early as Thursday.

The India Meteorological Department (IMD) could have declared the onset here on Wednesday itself, but for the sudden lull in the prevailing rain activity over this distant outpost in the Southeast Bay of Bengal, said Dr M. Rajeevan, Director-Forecasting. But he expected the declaration to take place on Thursday.

The normal date for onset here is around May 15.

Other ambient conditions in the Andamans are near consistent with the onset, evidenced best in the persistent cloud cover and the dominant southwesterlies. It may be seven to 10 days before the system makes what is being seen as a delayed landfall over the mainland along the southwest coast.

The prevailing heat wave across many States is expected to provide the perfect backdrop for the spectacle to unfold, with the peninsula offering itself as a `trough' (initially categorised by IMD as a `wind discontinuity' extending from Chattisgarh in the north right up to Tamil Nadu) for the southwesterlies to shower their contents.

The perfect formation and deliverance of Tuesday's `low' would have created the ideal pre-monsoon build-up for the onset along the southwest coast. But its fizzle-out only reveals the capricious nature of the tropical weather system, which weathermen have long tried to come to terms with, but not always with success.

Because of the country's inverted triangular shape, the land is heated progressively as the Sun moves northward. This accelerates spread of heating; combined with the general direction of heat being transported by winds, there is greater initial monsoon activity over the Arabian Sea than the Bay of Bengal. The relative humidity of coastal districts rises above 70 per cent.

The onset is recognised as a rapid, substantial and sustained increase in rainfall over a large scale. Typically, the rainfall amount increases from 5 mm to over 15 mm a day in less than five days during onset. But the onset shows little or no association with monsoon strength.

An IMD weather update on Wednesday said heat wave conditions prevailed over most of central and peninsular India.

The trough of low over the South Andaman Sea and the adjoining Southeast Bay of Bengal persisted.

Article E-Mail :: Comment :: Syndication :: Printer Friendly Page

Stories in this Section
Monsoon expected to hit Andamans today

Control room for rain problems in DK dist
Indian consumer confidence rising: MasterCard survey
SAARC nations to focus on statistics, data collection
`Political will, sincerity could help overcome disputes'
Musharraf tells Indian business delegation

FIEO signs pact to boost trade with Argentina
Now, utilities profit from power crunches through hourly contracts
Maharashtra Govt, Oppn fail to reach consensus on power crisis issue
Unbundled distribution cos may open escrow accounts
Power supply to Adilabad hit
Textile body nod for NTC land buy proposal
Textile Minister's assurance to exporters on trade issues
Bill to regulate TV channels
ICWAI unveils e-learning module
Globsyn B-school to provide consultancy
AP panel to submit report on handloom sector next month
Nuziveedu launches Bt cotton strains
Research body develops GM rubber — Variety tolerant to drought, environment stress
EPFO board meets on Saturday to decide on interest for 2004-05
Cabinet panel on WTO to discuss revised offer on services this week
AP to create land bank for distribution to poor
Two-day meet on plumbing
Keltron to hold workshop gets $10-m funding
Kerala Govt sanctions Rs 4.31 cr to build seawalls

The Hindu Group: Home | About Us | Copyright | Archives | Contacts | Subscription
Group Sites: The Hindu | Business Line | The Sportstar | Frontline | The Hindu eBooks | The Hindu Images | Home |

Copyright 2005, The Hindu Business Line. Republication or redissemination of the contents of this screen are expressly prohibited without the written consent of The Hindu Business Line