Putting a stake in the "Not enough Coriolis!" myth

[Derecho]

Sort of disappointed to see the "it's too far south, needs more Coriolis" myth pop up yet again this year; something about Coriolis lends itself to mythology...witness the "tubs and sinks drain opposite ways in the North and South Hemisphere!" myth that may be the most commonly believed science myth out there...

Anyway, here's some WPAC storms from just this year:

SUDAL: TD at 6.5 North, TS at 7.2 N, Typhoon at 9 North

NIDA: TD at 7.3 North, TS at 8.5 N, Typhoon at 8.9 North

OMAIS: TD at 6.1 N, TS at 6.8 North, Typhoon at 10 N

DIANMU: TD at 7.8 N, TS at 9.8N, Typhoon at 10.7 N

In 2003, Kujira was a TD at 3.5 N, and a TS at 4.4N.......

Just a small sampling.

No Atlantic storm has had an advisory south of 7 N.

But Coriolis is the same all over the world; the causes of a lack of equatorward Atlantic development has nothing to do with Coriolis.

Somewhat related is the constant worry "IT'S GOING TO RUN INTO SOUTH AMERICA!"

It's a bit chicken or the egg. A few actual storms have clipped the North coast of Venezuela/Colombia, but it isn't that features don't develop because they hit South America, it's that features hit South America because they don't develop..an actual TC will gradually gain latitude due to the Beta effect, and being steered more by upper flow, in most cases; there really aren't systems that were prime for development but ran into Guyana or something.