Hurricane and Typhoon Signal and Warning Comparisons

 I made this table because I have trouble remembering what each agency's Signals and Warnings mean especially when compared with each other. 
It should be noted that equivalency is only very approximate, as each agency has independently developed its own system without any need for relatingto any other system.   NHC winds are sustained winds on a one-minute average, Australian winds are maximum gusts, all other winds are sustained winds on a ten-minute average.

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This page was last updated on 07/02/08 at 08:15:24 Hong Kong Time.

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