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LAPAN explanation about Cempaka Cyclone triggers in South East Java
29 Nov 2017 • Read : 793 x ,

During the next three days of extreme weather conditions in West Java towards the end of November 2017, tropical cyclones exposed by the Meteorology, Climatology and Geophysics Agency (BMKG) called Cempaka.

Cempaka Cyclone located at 8.5 LS, 111.2 BT, the waters south of East Java about 32 kilometers south-southeast of Pacitan it has the potential to trigger heavy rains and strong winds.

Not only the area of West Java, there are areas affected by similar things, namely Banten, DKI Jakarta, Central Java, Yogyakarta, East Java, and Bali.

What is the cause of Cempaka Cyclones occurring since November 28th at 07.00 WIB until 30 November 2017?

The following is an explanation from the National Aeronautics and Space Agency (LAPAN):

Based on observations of wind data and cloud coverage, since 19 November 2017 has formed a low pressure system in the Indian Ocean near southern East Java.

The formation of this low-pressure system is the main trigger for the formation of the Tropical Depression, with a wind speed of 30-50 kilometers / h that develops into Tropical Storms of severe 63-87 kilometer / hour category, called BMKG as Tropical Cyclone Cempaka.

According to atmospheric science researchers LAPAN Center for Science and Technology LAPAN, Erma Yulihastin, actually to be able to develop from tropical storms into tropical cyclones in the Indian Ocean region, a requirement that must be owned is a wind speed of at least 110 kilometers / hour based on expert conventions.

"In addition to the trigger in the form of a low pressure system, I think the environmental support, the warming ocean surface temperature anomaly in Indonesian waters, as well as the formation of vertical wind shear in the atmosphere near the surface, can also trigger the development of tropical depression into tropical storm Cempaka," said Erma Yulihastin in a written statement, Wednesday, November 29, 2017, in Bandung.

 What to Look Out for

Erma Yulihastin explains, which should be aware of the tropical storm Cempaka is, the occurrence of severe storms in the ocean in the threat of high waves, heavy rain, lightning, and strong winds in southern Java, especially Central Java and East Java.

Currently in addition to tropical storms in southern Java, Erma said, there is also a low pressure system in the Banda Sea and Arafuru. So the southeastern part of Indonesia such as Ambon, Maluku, and surrounding areas are also worth watching.

He said the disaster opportunities to watch out for are floods, landslides, high winds, and high waves.

While the strong winds of 50 kilometers / h only formed in the storm region, which is in the south of Central Java and East Java, so the coastal areas in southern Java should be vigilant.

"For rainfall predictions in December, shows higher rainfall will occur in the southeast as Bali, Lombok, Nusa Tenggara so that vigilance in these areas also needs to be improved.

Source: Liputan 6. Image Source: World Meteorological Organization

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