JoshuaK
(Weather Guru)
Sat Jul 09 2016 04:15 PM
Late June/July Lull

Why is it fairly common to have a late May/early June storm and then have a lull that lasts until August?

Ed DunhamAdministrator
(Former Meteorologist & CFHC Forum Moderator (Ed Passed Away on May 14, 2017))
Sat Jul 09 2016 09:48 PM
Re: Late June/July Lull

An excellent question. In late May/early June, the last weak cold fronts of the Winter season push into the Gulf of Mexico and the southeastern United States and the tail end of those weak fronts will sometimes generate a subtropical or tropical cyclone. The western basin then quiets down again since no more fronts move south as the warmth of Summer takes control. The Cape Verde season with low pressure systems moving off the coast of West Africa normally starts in late July or early August - and rarely even later into August. The period between the decline of the last gasps of Winter cool fronts (and any weak systems generated by them) and the start of the West Africa easterly waves usually gives us a quiet period. In some years those last fronts of Winter don't push far enough south to drift over the waters of the GOM or off the southeast U.S. to form anything - and then you'll have a season with a late start.
Cheers,
ED



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