The difference between the actual water level under the influence of a meteorological disturbance and the level which would have been attained in the absence of the meteorological disturbance (i.e. astronomical tide) resulting in water level values lower than the tidal datum and posing a hazard to navigation.
Definition Source :
Similarity to Source :
Recommended Attributes :
Distinguishing Features :
-All values will be negative, indicating water levels lower than the indicated datum. -VERDAT attribute will define the datum LOWLVL should be referenced to.
Proposal Type :
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Proposed Change :
New feature for addition to WXO.
Feature is a critical component of meteorology and identification is essential for short and long term forecasting and maritime safety.
On behalf of the IHO Member States, the International Hydrographic Bureau would like to thank Korea Hydrographic and
Oceanographic Agency(KHOA) of the Republic of Korea for giving active support in the development of the S-100 GI Registry