I felt it

If you felt an earthquake, tell sisma. Reports help show where shaking was felt and how strongly.

1. Open the earthquake. For up to 6 hours after it happened, you’ll see I felt it.
2. Move the slider to how strong it felt, from Not felt to Extreme. The badge shows the matching intensity level (MMI).
3. Optionally add a note, or tap Add more detail for where you were, how long it lasted, what moved and any damage.
4. Tap Send report.

Your report is stored without your name or account, and your position is rounded to about 10 km.

Felt maps

When many people open sisma right after an earthquake, that rush shows where it was probably felt. sisma turns it into an anonymous felt map in the region view. Positions are blurred on your device by up to 500 m, carry no account or device identifier, and are only shown for areas of about 10 km with at least 3 people. You can turn this off in Me → Help map where quakes are felt.