Why do MCS/MCC's form at night?

Jeff Duda

EF6+, PhD
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Oct 7, 2008
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That statement is not entirely true - plenty of MCSs and MCCs form during daylight hours. However, probably the leading explanation underlying that statement is the forcing from the nocturnal low-level jet. During the daytime, cellular storm modes are usually preferred given the more heterogeneous nature of forcing to trigger convection (although even that is not always true).
 
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