Thread by @edu4drr

What is a ‘#stingjet’? The jets get their name from their resemblance to the sting in a scorpion’s tail, spotted as they develop on satellite images, where the end of the so-called cold conveyor is marked by a hook-shaped cloud with a point at the end.
theguardian.com/uk-news/2022/f…

A strong jet stream can generate a new storm every day or two as
a narrow, focused region of extremely strong winds embedded within the larger area of strong winds and lasting just a few hours, potentially in #StormEunice #stingjet #wxtwitter.

Satellite analysis of post-tropical storm Ophelia on October 16, 2017. Note the branches of “banded cloud head” pushed towards the SW Ireland, indicating that the #stingjet structure is likely developed. Source: EUMETSAT

Cold conveyor belt brings cold, moist air towards the center of the cyclone, bringing precipitation. The dry intrusion brings cool, dry air into the cyclone. As the precipitation from the cold conveyor belt falls into the dry air of the dry intrusion, evaporative cooling occurs.

This occurs at altitudes up to about 3-4 km. The cooled air is denser than the surrounding air & descends rapidly to the surface, producing even stronger winds within the intense wind field of the cyclone. The entire region of cooled, accelerated air is narrow, forms a #stingjet.

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