re: 2014 Hurricane Season Long Thread

quote:

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OTS
KW
OTC
MDR

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OTS - Out to Sea - refers to a system curving away from North American out into the Atlantic

KW - Kelvin Wave - an equatorial wave that is on a smaller scale than the MJO. Tends to increase convection as it propagates eastwards. This increased convection can help concentrate low level vorticity. When the MJO is weak, we tend to look to KW for signs of where genesis might occur.

OTC - probably a typo

MDR - main development region - refers to an area out in the Atlantic that typically sees the majority of the tropical development during an average season

ETA: MJO - Madden–Julian oscillation - similar to a KW but on a larger scale and it propagates eastward slower than a KW. It can have a pretty big influence on weather across North America, probably only behind ENSO. A lot of things can be tracked back to the Pacific in one way or another.