Mar 12, 2025 · QLCS can spawn tornadoes although they are often weaker than those formed from a discrete cell storm. A radar image showing a line of storms that developed a QLCS …

Nearly 20% of all tornadoes are associated with lines of strong thunderstorms called “quasi-linear convective systems” (QLCS). QLCS tornadoes frequently occur during the late night and early morning hours.

What is a QLCS? A subclassification of mesoscale convective systems Mesoscale indicating that the system is on the order of 2000 km or less. A “family” of storms moving together as one line. Also known as a squall line, which is what we’ll call them for the rest of this presentation. Can form a bowing segment, known as a bow

Mar 3, 2025 · Lacey Swope explains the dangers of QLCS tornadoes, which form along squall lines and can develop quickly, urging Oklahomans to stay informed and prepared during severe weather.

Mar 30, 2022 · It is a complex of thunderstorms that commonly develop during the night and pose the threat of strong/ damaging winds and even isolated tornadoes. Tornadoes that do form within a QLCS are often...

in some cases can produce weak tornadoes. This paper analyzes how and when QLCSs and mesovorticies develop, how to identify a mesovortex using various tools from radar, and finally a look at how common is it for a QLCS to put spawn a tornado across the United States. 1. …

However, nearly 20% of all tornadoes are associated with lines of strong thunderstorms called “quasi-linear convective systems” (QLCS). QLCS tornadoes frequently occur during the late night and early morning hours when it can be more difficult to stay weather aware of severe hazards.

Mar 12, 2025 · On June 20, 2021, an unusually strong QLCS tornado, ranked EF3 on the Fujita Scale, tracked through the suburbs of Chicago for 17 miles, causing massive destruction along the way.

May 27, 2019 · The term QLCS stands for ‘Quasi-Linear Convective System’. These are tornadoes that form very quickly with little warning. They ‘spin up’ with a line of storms often called a squall line.

Apr 9, 2022 · Meteorologist Kait Parker explains what a quasi-linear convective system is and why they can be such dangerous storms.