Downdrafts: Weather warnings, risks, and how to protect yourself
The National Center of Meteorology issued an urgent warning to citizens and residents regarding the phenomenon of downdrafts , emphasizing via its official account on the "X" platform the need for caution. The statement read: "For your safety, you must take precautions against downdrafts, take the necessary preventative measures, and follow the instructions of the relevant authorities," given the real dangers this phenomenon poses to lives and property.
What are downdrafts and how are they formed?
The National Center of Meteorology explained the scientific mechanism behind this phenomenon, noting its close connection to cumulonimbus clouds. The process begins with the ascent of moist air masses from the Earth's surface towards the upper atmosphere, where the moisture condenses, forming massive, energy-laden clouds.
In the broader scientific understanding of this phenomenon, these downdrafts occur when the air within a thundercloud cools due to the evaporation of rain or the melting of hail, making it denser and heavier than the surrounding air. This causes it to surge forward with tremendous force towards the ground. Upon impact with the surface, it spreads horizontally at very high speeds, sometimes exceeding 60 kilometers per hour , and in some extreme cases globally, it can even reach hurricane-like speeds.
Expected impacts and risks
The danger of downdrafts lies in their suddenness and destructive power, as they can lead to:
- Dust and sandstorms: Downdrafts cause dense dust storms that lead to almost complete lack of horizontal visibility, posing a significant risk to drivers on highways.
- Flying objects: Due to the high wind speed, unsecured objects, billboards, and tree branches may fly off, threatening the safety of passersby.
- Property damage: These winds may cause structural damage to weak buildings, awnings, and temporary structures.
Safety and prevention tips
In light of these warnings, it is advisable to follow the following safety guidelines:
- Stay away from windows and glass doors during thunderstorms.
- Avoid standing under tall trees or billboards.
- Secure the volatile outdoor belongings.
- Land travel should be postponed in case of poor visibility until the weather stabilizes.
This warning comes as part of the concern of the relevant authorities in the Kingdom of Saudi Arabia for the safety of everyone, especially with the weather fluctuations that the region is witnessing during the transitional seasons, in which cases of atmospheric instability and the formation of cumulonimbus clouds are frequent.
