Meteorologists have a specific name for a phenomenon within powerful storms that can generate unexpectedly strong winds: the “sting jet.” The term, coined based on visual patterns observed in satellite imagery, describes a concentrated stream of air descending rapidly within a larger weather system.
Understanding the “Sting”
According to Suzanne Gray, professor of meteorology at the University of Reading, the name originates from the imagery of a scorpion. “If you look at satellite pictures of storms with the clouds you can imagine a scorpion curling round to the north of the storm and the sting jet occurs at the end of that big curl of cloud,” she explained. “You can imagine the scorpion sitting there in that curl of cloud, and the sting is at the end of that.”
How Sting Jets Form
Sting jets develop at weather fronts, where warm and cold air masses collide. Warm air rises, then curls back down towards the Earth at high speed, creating a localized area of intense wind. These jets are relatively small in scale, typically around 50 kilometers across, and are short-lived.
Historical Occurrence and Frequency
The presence of sting jets isn’t unique to recent weather events. Professor Gray noted their occurrence in significant storms throughout recent history. It is currently estimated that approximately one in three of the most intense ten percent of storms contain a sting jet.
If a sting jet descends and makes contact with the surface, it could result in exceptionally strong winds. Further research and monitoring could improve the ability to predict when and where these localized wind events will occur.
Frequently Asked Questions
What causes the cloud formation associated with a sting jet?
The cloud formation is produced at a weather front, where warm and cold air meet, and warm air rises upwards before curling back round and plummeting towards Earth at high speed.
How large is a typical sting jet?
Sting jets tend to be of a small scale, perhaps just 50 km across.
Are sting jets common in all storms?
It is thought that around one in three of the top ten per cent of storms have a sting jet.
Given the potential for localized extreme winds, how might improved understanding of sting jets influence future storm preparedness strategies?
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