| Answer | Crossword Clue |
|---|---|
| TREMOR | Reading on the Richter scale |
| TREMOR | Low number on the Richter scale |
| TREMOR | Two or three on the Richter scale |
| TREMOR | 2 or 3, maybe, on the Richter scale |
| TREMOR | 2 or 3 on the Richter scale, maybe |
| TREMOR | A 2 or 3 on the Richter scale, maybe |
| TREMOR | Maybe a 2 or 3 on the Richter scale |
| microseism | A very small earthquake, less than 2 on the Richter scale |
| microseisms | A very small earthquake, less than 2 on the Richter scale |
| TREMOR | Richter scale reading |
