NST, 6 Mar 2014
EQUINOX EVENT: Inter-monsoon will cause huge change in weather patterns
KUALA LUMPUR: THE Meteorological Department forecasts heavy rain from March 21.
Its commercial and corporate services division director, Dr Mohd Hisham Mohd Anip, said the inter-monsoon season would cause immense change in weather patterns.
Weather patterns, he said, were highly influenced by the position of the sun, especially during the inter-monsoon, where the sun was closer to the equator.
He said this phenomena, known as the equinox, would cause the atmosphere to be unstable and active.
“Presently, the sun is located in the southern hemisphere, causing more weather changes and rain there,” he said, adding that this biannual phenomena occurred in March and September.
The inter-monsoon season, which was expected to end in April, would produce between 200 and 300 millimetres of rain water per month.
Hisham said no heavy rain was expected until the end of this week and there would only be isolated showers nationwide.
He added that cloud seeding would be postponed till next week since the clouds as wind patterns were unsuitable.
“Strong winds up to 20 knots are expected to continue until the end of this week. This situation is not favourable for cloud seeding, in addition to the cloudless situation.”
Drainage and Irrigation Department’s Water Resources and Hydrology division director Datuk Hanapi Mohamad Noor confirmed that the amount of rainwater was sufficient to improve water levels at dams to normal.
He said as long as the amount of rainwater was above 200mm, it would enable the dams to supply sufficient water and resolve the water crisis.
Water rationing in Selangor following the dry spell started on Feb 27, affecting more than 60,000 people in 71 areas in Hulu Langat, Kuala Langat and Sepang.
The disruption was said to be triggered by the closure of the Cheras Batu 11 and Bukit Tampoi water treatment plants due to ammonia pollution in Sungai Langat since Jan 28.
The second phase of a month-long water rationing started on March 2 affected some 2.2 million users in the Klang Valley.
The rationing was to reduce the release of water to 200 million litres per day in Sungai Selangor dam, and 30 million litres per day from the dam in Klang Gates, which saw water supply cuts on two-day intervals in Gombak, Kuala Lumpur, Petaling, Klang Shah Alam, Kuala Selangor and Hulu Selangor districts.
In Kluang, water scheduling was applied after the water level at the Sembrong Timur Water Treatment Plant plunged below average levels.
The water scheduling was introduced on Feb 18 and is expected to last until March 31.