tremors

About half an hour ago, I felt a little lightheaded and not very steady, as if I had a little too much beer. And it came in waves, few seconds apart, each lasting longer than the lull. I thought it could be a sleep deprivation induced hallucination, but after a while it felt quite real. Could it be construction works gone bad downstairs? An earthquake?

I just learned it was indeed an earthquake, at magnitude of 7.9 in Sumatra.

There's a sinking feeling in my heart...