Note: This VAL system was replaced in May 2022. The updated VAL system can be found here.
Agency: Observatorio Vulcanológico y Sismológico de Costa Rica – Universidad Nacional (OVSICORI-UNA)
Name: Nivel de Actividad [Activity Level]
Elements of VAL system
| Domain | Terrestrial |
| Volcano | All |
| System range | 0–5 level scale |
| Lowest level | 0 |
| Highest level | 5 |
| Level name type | Number & Word |
| Level for lack/loss of monitoring | No |
| Volcanic activity | Yes |
| Hazards possible | No |
| Locations affected | No |
| Potential impacts | No |
| Forecast language | No |
| Timing language | No |
| Actions to take | No |
| Agency actions | No |
| Link to evacuations | No |
| Reporting frequency per level | No |
| Link to monitoring thresholds | No |
| Step-up and step-down language | No |