Transitional Monsoon rain in Singapore

Yesterday I posted on Facebook about the shift from southwest monsoon to southeast monsoon in Singapore originating from Sumatra, Indonesia. The transition from southwest monsoon in June-July to northeast monsoon in December-January appears to happen around September.

This morning, torrential rain brought by prevailing winds from Sumatra (otherwise known as Sumatra squall) came visiting Singapore again. Though the wind directions in Singapore shown in the weather app by National Environment Agency appear haphazard, the rain seems to be moving from southeast to northwest, as shown below.

How will this knowledge help us?

For me, it can help me plan my route if I want to cycle from the western towards the central or eastern part of Singapore during this time. I can ask myself: Which route shall I take to avoid the brunt of the storm as much as possible? When would be the best time to start my journey?

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Late afternoon Sumatra squall

As evening approached on 18 June 2017, Sunday, a late developer of Sumatra squall made its presence felt in Singapore.

Strong winds blowing from southwest brought heavy rain coupled with thunder and lightning, which lasted over an hour. 


“Squall-lines usually occur during pre-dawn and early morning, and are most frequent between the months of April and November. However, squall-lines can occasionally form in the afternoons and move landwards along with the prevailing winds.”
(From Stormy shores: the Sumatras)

Symphony of Science – Our Biggest Challenge (Climate Change Music Video)

Video commentary:

A musical investigation into the causes and effects of global climate change and our opportunities to use science to offset it. Featuring Bill Nye, David Attenborough, Richard Alley and Isaac Asimov. “Our Biggest Challenge” is the 16th episode of the Symphony of Science series by melodysheep.

Visit http://symphonyofscience.com for more science remixes!
Materials used in the creation of this video come from:

– Are We Changing Planet Earth?
– Bill Nye – Climate
– Eyes of Nye – Climate Change
– Earth: The Operator’s Manual
– An Inconvenient Truth
– Hot Planet
– How Many People Can Live on Planet Earth
– Human Planet

Thanks for watching!

Related websites:

Symphony of Science – ‘We Are All Connected’

Symphony of Science