Station List

NDBC has recently revised the NDBC Handbook of Automated Data Quality Control Checks and Procedures. The new document can be found on our Publications page.

Station 46403 (LLNR 984.2) - SOUTHEAST SHUMAGIN ISLAND - 186 NM SE of Shumagin Is, AK

Owned and maintained by National Data Buoy Center
2.6-meter discus buoy
DART 4G payload
52.654 N 156.813 W (52°39'15" N 156°48'47" W)

Water depth: 4519 m
Watch circle radius: 3148 yards

Important Notice to Mariners

Meteorological Observations from Nearby Stations and Ships Image indicating link to RSS feed of recent meteorological observations near station 46403

DART® Program Description

U.S. Tsunami Warning Centers

Large icon indicates selected station.
yellow diamond Stations with recent data
red diamond Stations with no data in last 8 hours
(24 hours for tsunami stations)
Station 46403

Plot of Water Column Height Data for Station 46403

Data Access

Water Column Heights:
04/25/2025 00:00:00 to 04/29/2025 23:59:59

The data are recorded in pounds per square inch absolute (PSIA), but are displayed in meters of water after applying a constant 670.0 mm of water/PSIA conversion factor.

T = Measurement Type;
     where 1 = 15-minute measurement; 2 = 1-minute measurement; 3 = 15-second measurement