Agency: Scientific Advisory Committee:
Coordinación Nacional de Protección Civil (CNPC), Secretaría de Seguridad y Protección Ciudadana (SSPC), Secretaría de Protección Civil del Gobierno de Chiapas (Protección Civil), Centro Nacional de Prevención de Desastres (CENAPRED), Universidad Nacional Autónoma de México (UNAM), Universidad de Ciencias y Artes de Chiapas – Centro de Monitoreo Vulcanológico – Sismológico (UNICACH).
Name: Semáforo de Alerta Volcánica de El Chichonal [El Chichonal Volcanic Alert Traffic Light]
Elements of VAL system
| Domain | Terrestrial or All |
| Volcano | Chichón |
| Number of levels | 7 |
| Scheme range | 7-level scale |
| Lowest level | Verde Fase 1 |
| Highest level | Rojo Fase 3 |
| Level name type | Color & Number |
| Level for lack/loss of monitoring | No |
| Volcanic activity | Yes |
| Hazards possible | Yes |
| Locations affected | No |
| Potential impacts | No |
| Forecast language | No |
| Timing language | No |
| Actions to take | Yes |
| Agency actions | Yes |
| Link to evacuations | No |
| Reporting frequency per level | No |
| Link to monitoring thresholds | No |
| Step-up and step-down language | No |
Other Mexican VAL schemes can be found below:
VAL sources and links
The images below are static examples of VAL information pages and DO NOT represent current alert levels. While we strive to maintain the links below, they may not always work. For the current alert level, please consult the proper institutional authorities.
Reports
