The Canary Islands are currently under a comprehensive weather alert as severe thunderstorms are predicted to impact the entire archipelago on Tuesday, August 20th. The State Meteorological Agency (Aemet) has extended a yellow warning across all the islands, signaling a significant risk of adverse weather conditions, particularly during the afternoon hours. The warning remains in effect until 18:00, with thunderstorms expected to develop around the higher terrains of the islands, a region particularly vulnerable to such weather phenomena.
The thunderstorms forecasted are not to be taken lightly. According to Aemet, these storms may be accompanied by highly localized, intense convective gusts of wind with unpredictable directions. These winds, known as dry bursts, can reach dangerous speeds and pose serious hazards, especially in elevated areas and exposed locations. The unpredictability of these gusts makes them particularly concerning for both residents and visitors.
In light of these warnings, the Canary Islands Government has activated a pre-alert status under the Specific Emergency Plan for Adverse Weather Phenomenon Risks (PFMA), as per Decree 18/2014. This pre-alert status serves as a crucial reminder for the public to remain vigilant and to prepare for rapidly changing weather conditions that could pose significant risks to safety.
The meteorological setup behind these storms is complex. The interaction between a sub-Saharan depression and an easterly wave to the south-southeast of the Canary Islands is expected to create atmospheric instability. This instability, coupled with an increase in humidity, is likely to trigger widespread thunderstorm activity across the islands.
The forecast includes the possibility of severe thunderstorms characterized by intense lightning, thunder, and occasional, scattered showers. In addition, these storms could bring locally very strong gusts of wind with variable directions, known as dry bursts, which are especially dangerous.
Given the potential severity of the situation, the authorities are urging the public to take precautionary measures. Safety tips include staying indoors during lightning storms, closing doors and windows to prevent drafts that could attract lightning, unplugging electrical appliances to avoid damage from power surges, and steering clear of metal structures or tall objects such as trees. Those who are outdoors when the storm hits are advised to seek shelter in low-lying areas and avoid open fields or ridges, which are more prone to lightning strikes.
Travel during the storm is strongly discouraged. If travel is unavoidable, extra precautions should be taken, especially in areas prone to flash floods or strong winds. In the event of an emergency, the public is advised to contact emergency services at 1-1-2 and to use the 0-12 information line for non-emergency queries.
The Aemet’s alert serves as a critical reminder of the power and unpredictability of nature, particularly in regions like the Canary Islands where weather conditions can change rapidly. As the islands brace for this potentially severe weather event, residents and visitors alike are encouraged to stay informed, take all necessary precautions, and be prepared for sudden changes in weather that could impact safety and travel plans.
