The State Meteorological Agency (Aemet) has forecast the gradual withdrawal of the calima, the dusty haze that has blanketed the Canary Islands in recent days. This weather phenomenon, tied to the recent deviation of Storm Dorothea towards the north, has caused significantly poor air quality and reduced visibility to levels as low as 1,000 metres in some areas. However, Aemet predicts that the intensity of the calima will diminish progressively starting Thursday.
Current Weather Conditions
- Calima Withdrawal:
Visibility, previously reduced to dangerously low levels, is expected to improve throughout Thursday. Suspended particles from the Sahara, such as PM2.5 and PM10, which have raised pollution indices to harmful levels, will begin to dissipate. - Cloud Cover:
The western islands can expect medium and high cloud intervals, while the eastern islands will experience mostly high clouds. - Temperature Trends:
Temperatures will remain stable, with slight decreases expected in the western islands. Conversely, temperatures in the eastern islands may rise slightly. - Wind Direction:
Winds from the southeast are forecast to shift eastward later in the day.
Weather Outlook for Friday
By Friday, weather patterns are expected to change further:
- Cloud Formation:
Low clouds are forecast to move into the north and northeast of the islands, especially in mountainous areas. These could bring light and occasional rain showers by the end of the day. - Calmer Skies:
The haze is predicted to dissipate almost entirely, leading to clearer skies. - Temperature Fluctuations:
A slight rise in temperatures is possible, particularly in the eastern islands. - Stronger Winds:
Winds will shift towards the northeast and may intensify in mid-altitude regions.
Impact of the Calima
This recent calima episode has been marked by high concentrations of airborne particles, significantly increasing pollution levels across the islands:
- Health Concerns:
Vulnerable groups such as people with respiratory illnesses, children, and the elderly have been especially affected. Authorities recommended avoiding outdoor physical activities and maintaining hydration during the worst of the haze. - Comparison with 2020 Super-Calima:
While severe, this episode did not reach the intensity of the February 2020 super-calima, when airports across the archipelago were shut down for two days.
Ongoing Monitoring and Preventative Measures
The current event serves as a reminder of the importance of following meteorological warnings and adopting preventative health measures during such occurrences. As the calima dissipates, the Canary Islands will regain greater atmospheric stability. However, low cloud cover and changing wind patterns will remain in focus for the coming days.
Aemet continues to monitor weather conditions closely and will provide updates to ensure public safety and awareness.
