Apra Harbor, Guam, Un - Station ID: 1630000

Established:Mar 11, 1948
Time Meridian:0° E
Present Installation:Feb 28, 1989
Date Removed:N/A
Water Level Max (ref MHHW):1.95 ft. Aug 28, 1992
Water Level Min (ref MLLW):-2.34 ft. Oct 24, 1972
Mean Range:1.62 ft.
Diurnal Range:2.35 ft.
Latitude13° 26.6' N
Longitude144° 39.4' E
NOAA Chart#:81054
Met Site Elevation:6.1 ft. above MSL
Today's Tides (LST/LDT)
graphical depiction of low tide
2:58 PM
2:37 AMlow 0.6 ft.
8:31 AMhigh 2.7 ft.
2:58 PMlow 0.4 ft.
9:00 PMhigh 2.6 ft.

Sensor Information

SensorSensor IDDCP#Sensor HeightStatus
WindC1127.7 ft. above site Elevation Enabled
Air TemperatureD1126.1 ft. above site Elevation Enabled
Water TemperatureE114.6 ft. below MLLW Enabled
Barometric PressureF1111.3 ft. above MSL Enabled
Pressure WLN11N/A Enabled
Tsunami WLU11N/A Enabled
For questions about disabled sensors, please contact CO-OPS User Services.


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How to reach: To reach the tidal bench marks, from the Guam airport, travel east on Chalan Passajeros (Route 10A) for 2.9 km (1.8 mi) until you reach the main gate of the Naval Station Guam. Obtain a visitor's pass and continue on Marine Drive for 2.9 km (1.8 mi) until you reach San Luis Road, turn right (east) and follow the boat channel on your right to its entrance. The bench marks are located between Small Boat Channel and Fleet Landing Channel. The tide house is located on the east corner of the entrance to the Sunny Cove Marina boat harbor.

Products available at 1630000 Apra Harbor, Guam, Un