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What does NNWWN stand for?

NNWWN stands for North-Northwestern (weather reports)

This definition appears very rarely and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

Samples in periodicals archive:

It is expected to deliver heavy rain starting Monday afternoon in Mindanao, and will continue its north-northwestern path towards Central Philippines, possibly hitting Cebu, Bohol and the Western Visayas Region.