| Term | Definition | Unit |
| Strong precipitation amount (SPA) | Total precipitation amount for top 5% of all wet events | mm |
| Mean precipitation intensity (MPI) | The average daily precipitation amount (conditional) | mm/day |
| Strong precipitation days (SPD) | The total days for daily precipitation amount for top 5% of all wet events | day |
| Strong precipitation frequency (SPF) | The percentage of SPA days from rain days (conditional) | % |