Magnitude 4.7 earthquake — 31 km E of Basco, Philippines

A magnitude 4.7 earthquake has struck the waters east of Basco in the Philippines, according to the United States Geological Survey.

The tremor hit at around half past nine in the evening local time on Tuesday, centred about 31 kilometres east of Basco, the tiny capital of Batanes — the Philippines' northernmost province. The quake occurred at a shallow depth of 10 kilometres beneath the seabed.

What a 4.7 magnitude feels like

For those unfamiliar with the scale, a magnitude 4.7 earthquake is considered moderate. People indoors would likely have felt a noticeable shaking — rather like a heavy lorry passing close by, or perhaps a bit more vigorous than that. Hanging objects would swing, windows might rattle, and anyone awake would certainly have noticed it. Outdoors, it's often less obvious unless you're standing still.

At this strength, structural damage is unlikely in well-built buildings, though loose objects might topple and the odd crack could appear in older walls. It's the sort of shake that gets your attention without usually causing serious harm, though it can certainly give people a fright, especially if they're not accustomed to earthquakes.

Remote but not unheard of

Batanes sits in a seismically active region where the Philippine Sea Plate grinds against the Eurasian Plate, so earthquakes are far from unusual in these parts. The islands are beautifully remote — closer to Taiwan than to Manila — with a population of only around 17,000 hardy souls who've learned to live with the earth's occasional reminders that it's very much alive beneath their feet.

Basco itself is a small, picturesque town known more for its rolling hills and traditional stone houses than for making headlines. Whether this quake caused any damage or injuries is not yet known, though given its moderate size and offshore location, serious consequences seem unlikely.

The tremor was recorded as still being monitored at the time of reporting, with data quality marked as calculated — meaning seismologists are still refining the details as more information comes in.

Over to you

Were you anywhere near Batanes when this struck, or do you know someone out that way? Perhaps you've experienced a similar shake yourself, whether in the Philippines or elsewhere? Do share your stories in the comments below — we'd love to hear from you.