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Use the Tide tab to view tide and current information. The Tide tab 

contains two sub tabs - Tide and Current.

Station

name

Date

Tide

chart

Event

times

The Tide sub tab contains a graphical chart that shows Tide Station 

information in a 24-hour span starting at midnight. You can choose 

from different dates and more than 3,000 Tide Stations around the 

U.S.A. coastline, Alaska, Hawaii, western Canada, and several of 

the Caribbean islands. The top of the Tide sub tab shows the Tide 

Station and the date; the bottom of the Tide sub tab shows the 

distance and bearing from your location. 

The bottom of the Tide chart shows a 24-hour block of local time 

for your location. Daylight (yellow bar) and nighttime (blue bar) 

at the Tide Station are shown across the time scale, with the time 

progressing from left to right (sunrise and sunset information might 

not be available for some Tide Stations). The solid, light vertical 

lines are in 4-hour increments, and the light, dotted vertical lines 

are in 1-hour increments. A solid, vertical line (with the local 

time at the top) indicates the tide height corresponding to the time 

shown in the local time box.

Station time

Day

Night

MLLW

Current time bar

Max. level

Min. level

Current tide 

height bar

High tide 

curve

Low tide curve

The Tide curve is shown as a shaded area, where higher tides are 

taller (blue) and lower tides are shorter (red). The solid, horizontal 

line indicates the tide height. The figure to the left of the line shows 

the present tide level. The Mean Lower Low Water (MLLW) 

appears as a solid, horizontal line near the bottom of the chart 

(this line appears only if the tide height range is zero or below).