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 SISW1 - Smith Island, WA 
Lowest 1-minute Pressure |
Time (PDT) | | Pressure |
2:40 pm | | 29.87 in |
Highest 1-minute Wind Speed |
Time (PDT) | WSPD | WDIR |
2:37 pm | 10 kts | WNW ( 290 deg true ) |
|
|
Previous observations
TIME (PDT) |
 WDIR |
 WSPD kts |
 GST kts |
 WVHT ft |
 DPD sec |
 APD sec |
 MWD |
 PRES in |
 PTDY in |
 ATMP °F |
 WTMP °F |
 DEWP °F |
 SAL psu |
 VIS nmi |
 TIDE ft |
2025-04-25 02:30 pm | WNW | 9 | 10 | - | - | - | - | 29.88 | - | 57.0 | - | 44.1 | - | - | - |
2025-04-25 02:20 pm | WNW | 10 | 11 | - | - | - | - | 29.88 | - | 56.8 | - | 43.9 | - | - | - |
2025-04-25 02:10 pm | WNW | 10 | 11 | - | - | - | - | 29.88 | - | 56.8 | - | 43.7 | - | - | - |
2025-04-25 02:00 pm | WNW | 9 | 10 | - | - | - | - | 29.88 | -0.04 | 56.5 | - | 43.5 | - | - | - |
2025-04-25 01:50 pm | WNW | 10 | 11 | - | - | - | - | 29.89 | - | 56.1 | - | 43.5 | - | - | - |
2025-04-25 01:40 pm | WNW | 10 | 12 | - | - | - | - | 29.89 | - | 55.8 | - | 43.9 | - | - | - |
2025-04-25 01:30 pm | WNW | 9 | 11 | - | - | - | - | 29.89 | - | 55.4 | - | 44.1 | - | - | - |
2025-04-25 01:20 pm | WNW | 11 | 12 | - | - | - | - | 29.89 | - | 55.0 | - | 43.5 | - | - | - |
2025-04-25 01:10 pm | WNW | 11 | 12 | - | - | - | - | 29.89 | - | 54.7 | - | 44.2 | - | - | - |
2025-04-25 01:00 pm | WNW | 10 | 12 | - | - | - | - | 29.90 | -0.03 | 54.9 | - | 44.2 | - | - | - |
2025-04-25 12:50 pm | WNW | 9 | 10 | - | - | - | - | 29.90 | - | 54.7 | - | 44.1 | - | - | - |
2025-04-25 12:40 pm | WNW | 9 | 10 | - | - | - | - | 29.91 | - | 54.1 | - | 44.4 | - | - | - |
2025-04-25 12:30 pm | WNW | 8 | 9 | - | - | - | - | 29.91 | - | 54.1 | - | 45.0 | - | - | - |
2025-04-25 12:20 pm | W | 8 | 9 | - | - | - | - | 29.91 | - | 54.1 | - | 45.1 | - | - | - |
2025-04-25 12:10 pm | WNW | 7 | 8 | - | - | - | - | 29.92 | - | 54.1 | - | 44.4 | - | - | - |
2025-04-25 12:00 pm | WNW | 7 | 8 | - | - | - | - | 29.92 | -0.01 | 53.8 | - | 44.8 | - | - | - |
2025-04-25 11:50 am | WNW | 6 | 7 | - | - | - | - | 29.92 | - | 53.6 | - | 44.8 | - | - | - |
2025-04-25 11:40 am | WNW | 6 | 7 | - | - | - | - | 29.93 | - | 52.9 | - | 44.6 | - | - | - |
2025-04-25 11:30 am | WNW | 6 | 7 | - | - | - | - | 29.93 | - | 52.5 | - | 44.6 | - | - | - |
2025-04-25 11:20 am | WNW | 6 | 6 | - | - | - | - | 29.93 | - | 52.2 | - | 45.0 | - | - | - |
2025-04-25 11:10 am | WNW | 6 | 7 | - | - | - | - | 29.93 | - | 52.2 | - | 45.1 | - | - | - |
2025-04-25 11:00 am | WNW | 5 | 6 | - | - | - | - | 29.93 | +0.00 | 52.3 | - | 45.1 | - | - | - |
2025-04-25 10:50 am | WNW | 4 | 5 | - | - | - | - | 29.93 | - | 51.6 | - | 45.0 | - | - | - |
2025-04-25 10:40 am | WNW | 5 | 5 | - | - | - | - | 29.93 | - | 51.6 | - | 45.3 | - | - | - |
2025-04-25 10:30 am | WNW | 5 | 6 | - | - | - | - | 29.93 | - | 51.6 | - | 45.1 | - | - | - |
2025-04-25 10:20 am | WNW | 4 | 5 | - | - | - | - | 29.93 | - | 51.4 | - | 45.1 | - | - | - |
2025-04-25 10:10 am | WNW | 4 | 4 | - | - | - | - | 29.93 | - | 50.7 | - | 45.7 | - | - | - |
2025-04-25 10:00 am | W | 3 | 5 | - | - | - | - | 29.93 | +0.01 | 50.7 | - | 46.4 | - | - | - |
2025-04-25 09:50 am | W | 3 | 4 | - | - | - | - | 29.93 | - | 50.7 | - | 46.0 | - | - | - |
2025-04-25 09:40 am | WNW | 2 | 3 | - | - | - | - | 29.93 | - | 50.4 | - | 45.0 | - | - | - |
2025-04-25 09:30 am | NW | 1 | 3 | - | - | - | - | 29.93 | - | 50.9 | - | 46.0 | - | - | - |
2025-04-25 09:20 am | - | 0 | 2 | - | - | - | - | 29.93 | - | 50.5 | - | 45.3 | - | - | - |
2025-04-25 09:10 am | - | 0 | 2 | - | - | - | - | 29.93 | - | 50.2 | - | 45.7 | - | - | - |
2025-04-25 09:00 am | - | 0 | 1 | - | - | - | - | 29.93 | +0.01 | 49.1 | - | 45.1 | - | - | - |
2025-04-25 08:50 am | N | 2 | 2 | - | - | - | - | 29.93 | - | 48.9 | - | 45.5 | - | - | - |
2025-04-25 08:40 am | N | 2 | 2 | - | - | - | - | 29.93 | - | 49.3 | - | 46.6 | - | - | - |
2025-04-25 08:30 am | NNE | 3 | 5 | - | - | - | - | 29.93 | - | 48.9 | - | 46.0 | - | - | - |
2025-04-25 08:20 am | N | 3 | 5 | - | - | - | - | 29.93 | - | 48.9 | - | 46.6 | - | - | - |
2025-04-25 08:10 am | NNW | 3 | 3 | - | - | - | - | 29.93 | - | 49.1 | - | 46.9 | - | - | - |
2025-04-25 08:00 am | NW | 2 | 2 | - | - | - | - | 29.93 | +0.02 | 49.6 | - | 47.5 | - | - | - |
2025-04-25 07:50 am | NW | 2 | 2 | - | - | - | - | 29.93 | - | 49.5 | - | 47.3 | - | - | - |
2025-04-25 07:40 am | NW | 2 | 3 | - | - | - | - | 29.92 | - | 49.3 | - | 47.1 | - | - | - |
2025-04-25 07:30 am | NW | 3 | 3 | - | - | - | - | 29.92 | - | 49.3 | - | 46.9 | - | - | - |
2025-04-25 07:20 am | NW | 3 | 3 | - | - | - | - | 29.92 | - | 49.1 | - | 46.6 | - | - | - |
2025-04-25 07:10 am | NW | 2 | 2 | - | - | - | - | 29.92 | - | 48.9 | - | 46.6 | - | - | - |
2025-04-25 07:00 am | NW | 2 | 3 | - | - | - | - | 29.92 | +0.01 | 48.6 | - | 46.4 | - | - | - |
2025-04-25 06:50 am | NW | 2 | 2 | - | - | - | - | 29.92 | - | 48.4 | - | 46.4 | - | - | - |
2025-04-25 06:40 am | NW | 2 | 2 | - | - | - | - | 29.92 | - | 48.2 | - | 46.4 | - | - | - |
2025-04-25 06:20 am | NW | 5 | 5 | - | - | - | - | 29.91 | - | 48.4 | - | 46.9 | - | - | - |
2025-04-25 06:10 am | NW | 4 | 4 | - | - | - | - | 29.91 | - | 48.6 | - | 47.3 | - | - | - |
2025-04-25 06:00 am | NW | 3 | 4 | - | - | - | - | 29.91 | +0.01 | 48.2 | - | 47.3 | - | - | - |
2025-04-25 05:50 am | NNW | 2 | 4 | - | - | - | - | 29.91 | - | 48.4 | - | 47.7 | - | - | - |
2025-04-25 05:40 am | NNW | 4 | 4 | - | - | - | - | 29.91 | - | 48.7 | - | 48.0 | - | - | - |
2025-04-25 05:30 am | N | 4 | 5 | - | - | - | - | 29.91 | - | 49.1 | - | 48.4 | - | - | - |
2025-04-25 05:20 am | NNW | 4 | 4 | - | - | - | - | 29.91 | - | 49.1 | - | 48.4 | - | - | - |
2025-04-25 05:10 am | NNW | 5 | 5 | - | - | - | - | 29.91 | - | 49.3 | - | 48.6 | - | - | - |
2025-04-25 05:00 am | NNW | 4 | 5 | - | - | - | - | 29.91 | +0.00 | 49.5 | - | 48.6 | - | - | - |
2025-04-25 04:50 am | N | 3 | 3 | - | - | - | - | 29.91 | - | 49.5 | - | 48.6 | - | - | - |
2025-04-25 04:40 am | N | 3 | 4 | - | - | - | - | 29.91 | - | 49.5 | - | 48.4 | - | - | - |
2025-04-25 04:30 am | N | 3 | 4 | - | - | - | - | 29.91 | - | 49.5 | - | 48.4 | - | - | - |
2025-04-25 04:20 am | N | 3 | 4 | - | - | - | - | 29.91 | - | 49.6 | - | 48.6 | - | - | - |
2025-04-25 04:10 am | N | 3 | 5 | - | - | - | - | 29.90 | - | 49.6 | - | 48.6 | - | - | - |
2025-04-25 04:00 am | N | 4 | 5 | - | - | - | - | 29.90 | -0.02 | 49.5 | - | 48.6 | - | - | - |
2025-04-25 03:50 am | N | 5 | 6 | - | - | - | - | 29.90 | - | 49.5 | - | 48.6 | - | - | - |
2025-04-25 03:40 am | NW | 5 | 7 | - | - | - | - | 29.91 | - | 49.3 | - | 48.6 | - | - | - |
2025-04-25 03:30 am | WNW | 5 | 6 | - | - | - | - | 29.91 | - | 49.1 | - | 48.4 | - | - | - |
2025-04-25 03:20 am | WNW | 4 | 5 | - | - | - | - | 29.91 | - | 49.1 | - | 48.4 | - | - | - |
2025-04-25 03:10 am | W | 2 | 3 | - | - | - | - | 29.91 | - | 49.1 | - | 48.2 | - | - | - |
2025-04-25 03:00 am | WSW | 3 | 3 | - | - | - | - | 29.91 | -0.01 | 49.3 | - | 48.2 | - | - | - |
2025-04-25 02:50 am | W | 3 | 4 | - | - | - | - | 29.91 | - | 49.5 | - | 48.4 | - | - | - |
2025-04-25 02:40 am | WSW | 3 | 4 | - | - | - | - | 29.91 | - | 49.5 | - | 48.2 | - | - | - |
2025-04-25 02:30 am | WSW | 3 | 3 | - | - | - | - | 29.91 | - | 49.5 | - | 48.2 | - | - | - |
2025-04-25 02:20 am | W | 3 | 4 | - | - | - | - | 29.91 | - | 49.5 | - | 48.2 | - | - | - |
2025-04-25 02:10 am | WNW | 2 | 3 | - | - | - | - | 29.91 | - | 49.5 | - | 48.2 | - | - | - |
2025-04-25 02:00 am | W | 3 | 4 | - | - | - | - | 29.91 | +0.00 | 49.5 | - | 48.2 | - | - | - |
2025-04-25 01:50 am | WNW | 4 | 5 | - | - | - | - | 29.91 | - | 49.5 | - | 48.2 | - | - | - |
2025-04-25 01:40 am | WNW | 2 | 4 | - | - | - | - | 29.92 | - | 49.6 | - | 48.6 | - | - | - |
2025-04-25 01:30 am | NNW | 1 | 3 | - | - | - | - | 29.92 | - | 49.8 | - | 48.7 | - | - | - |
2025-04-25 01:20 am | NW | 2 | 4 | - | - | - | - | 29.92 | - | 49.8 | - | 48.6 | - | - | - |
2025-04-25 01:10 am | N | 3 | 4 | - | - | - | - | 29.92 | - | 49.8 | - | 48.6 | - | - | - |
2025-04-25 01:00 am | NNW | 3 | 5 | - | - | - | - | 29.92 | +0.01 | 49.8 | - | 48.6 | - | - | - |
2025-04-25 12:50 am | NW | 5 | 6 | - | - | - | - | 29.92 | - | 49.8 | - | 48.6 | - | - | - |
2025-04-25 12:40 am | NNW | 4 | 6 | - | - | - | - | 29.92 | - | 49.8 | - | 48.6 | - | - | - |
2025-04-25 12:30 am | NNW | 5 | 6 | - | - | - | - | 29.92 | - | 49.8 | - | 48.4 | - | - | - |
2025-04-25 12:20 am | NW | 7 | 8 | - | - | - | - | 29.92 | - | 49.8 | - | 48.4 | - | - | - |
2025-04-25 12:10 am | NW | 8 | 9 | - | - | - | - | 29.92 | - | 50.0 | - | 48.4 | - | - | - |
2025-04-25 12:00 am | NW | 8 | 8 | - | - | - | - | 29.92 | +0.02 | 50.0 | - | 48.4 | - | - | - |
2025-04-24 11:50 pm | WNW | 8 | 10 | - | - | - | - | 29.92 | - | 50.2 | - | 48.4 | - | - | - |
2025-04-24 11:40 pm | WNW | 8 | 10 | - | - | - | - | 29.92 | - | 50.2 | - | 48.2 | - | - | - |
2025-04-24 11:30 pm | WNW | 9 | 10 | - | - | - | - | 29.91 | - | 50.4 | - | 48.0 | - | - | - |
2025-04-24 11:20 pm | NW | 8 | 9 | - | - | - | - | 29.92 | - | 50.5 | - | 47.7 | - | - | - |
2025-04-24 11:10 pm | WNW | 8 | 10 | - | - | - | - | 29.92 | - | 50.7 | - | 47.3 | - | - | - |
2025-04-24 11:00 pm | WNW | 10 | 11 | - | - | - | - | 29.92 | +0.03 | 50.9 | - | 46.9 | - | - | - |
2025-04-24 10:50 pm | WNW | 10 | 12 | - | - | - | - | 29.91 | - | 50.9 | - | 46.9 | - | - | - |
2025-04-24 10:40 pm | WNW | 11 | 12 | - | - | - | - | 29.91 | - | 50.9 | - | 46.9 | - | - | - |
2025-04-24 10:30 pm | WNW | 11 | 13 | - | - | - | - | 29.91 | - | 51.1 | - | 47.1 | - | - | - |
2025-04-24 10:20 pm | WNW | 12 | 14 | - | - | - | - | 29.91 | - | 51.3 | - | 47.3 | - | - | - |
2025-04-24 10:10 pm | W | 12 | 14 | - | - | - | - | 29.91 | - | 51.6 | - | 46.6 | - | - | - |
2025-04-24 10:00 pm | W | 11 | 15 | - | - | - | - | 29.91 | +0.01 | 52.2 | - | 45.9 | - | - | - |
2025-04-24 09:50 pm | WNW | 9 | 11 | - | - | - | - | 29.91 | - | 52.3 | - | 45.9 | - | - | - |
2025-04-24 09:40 pm | NW | 8 | 10 | - | - | - | - | 29.91 | - | 52.5 | - | 46.8 | - | - | - |
2025-04-24 09:30 pm | NW | 7 | 9 | - | - | - | - | 29.91 | - | 52.5 | - | 47.5 | - | - | - |
2025-04-24 09:20 pm | NW | 7 | 8 | - | - | - | - | 29.91 | - | 52.9 | - | 47.3 | - | - | - |
2025-04-24 09:10 pm | NW | 7 | 8 | - | - | - | - | 29.90 | - | 53.6 | - | 46.2 | - | - | - |
2025-04-24 09:00 pm | NW | 8 | 9 | - | - | - | - | 29.90 | -0.02 | 55.9 | - | 43.5 | - | - | - |
2025-04-24 08:50 pm | WNW | 9 | 9 | - | - | - | - | 29.90 | - | 57.2 | - | 41.4 | - | - | - |
2025-04-24 08:40 pm | WNW | 8 | 10 | - | - | - | - | 29.89 | - | 55.2 | - | 43.0 | - | - | - |
2025-04-24 08:30 pm | WNW | 6 | 7 | - | - | - | - | 29.89 | - | 55.0 | - | 44.1 | - | - | - |
2025-04-24 08:20 pm | WNW | 7 | 8 | - | - | - | - | 29.89 | - | 56.5 | - | 42.3 | - | - | - |
2025-04-24 08:10 pm | WNW | 8 | 9 | - | - | - | - | 29.89 | - | 56.8 | - | 41.4 | - | - | - |
2025-04-24 08:00 pm | WNW | 9 | 10 | - | - | - | - | 29.89 | -0.04 | 56.7 | - | 42.1 | - | - | - |
2025-04-24 07:50 pm | W | 9 | 10 | - | - | - | - | 29.89 | - | 55.9 | - | 42.6 | - | - | - |
2025-04-24 07:40 pm | W | 8 | 9 | - | - | - | - | 29.89 | - | 55.8 | - | 43.2 | - | - | - |
2025-04-24 07:30 pm | WNW | 8 | 9 | - | - | - | - | 29.89 | - | 55.4 | - | 44.1 | - | - | - |
2025-04-24 07:20 pm | W | 8 | 9 | - | - | - | - | 29.90 | - | 54.9 | - | 45.1 | - | - | - |
2025-04-24 07:10 pm | WNW | 8 | 9 | - | - | - | - | 29.90 | - | 54.3 | - | 45.5 | - | - | - |
2025-04-24 07:00 pm | W | 8 | 9 | - | - | - | - | 29.90 | -0.05 | 54.3 | - | 46.0 | - | - | - |
2025-04-24 06:50 pm | W | 8 | 9 | - | - | - | - | 29.90 | - | 54.7 | - | 45.9 | - | - | - |
2025-04-24 06:40 pm | W | 6 | 7 | - | - | - | - | 29.90 | - | 54.9 | - | 45.9 | - | - | - |
2025-04-24 06:30 pm | W | 5 | 6 | - | - | - | - | 29.91 | - | 54.9 | - | 46.4 | - | - | - |
2025-04-24 06:20 pm | W | 5 | 6 | - | - | - | - | 29.91 | - | 55.2 | - | 46.0 | - | - | - |
2025-04-24 06:10 pm | WNW | 5 | 6 | - | - | - | - | 29.91 | - | 55.2 | - | 44.8 | - | - | - |
2025-04-24 06:00 pm | WNW | 6 | 6 | - | - | - | - | 29.92 | -0.05 | 54.9 | - | 44.8 | - | - | - |
2025-04-24 05:50 pm | WNW | 6 | 8 | - | - | - | - | 29.92 | - | 54.9 | - | 44.6 | - | - | - |
2025-04-24 05:40 pm | WNW | 8 | 9 | - | - | - | - | 29.92 | - | 54.9 | - | 44.8 | - | - | - |
2025-04-24 05:30 pm | WNW | 8 | 10 | - | - | - | - | 29.92 | - | 55.0 | - | 44.6 | - | - | - |
2025-04-24 05:20 pm | WNW | 7 | 9 | - | - | - | - | 29.93 | - | 54.7 | - | 45.1 | - | - | - |
2025-04-24 05:10 pm | WNW | 8 | 10 | - | - | - | - | 29.93 | - | 54.7 | - | 45.5 | - | - | - |
2025-04-24 05:00 pm | W | 8 | 9 | - | - | - | - | 29.93 | -0.06 | 53.8 | - | 45.9 | - | - | - |
2025-04-24 04:50 pm | W | 9 | 10 | - | - | - | - | 29.93 | - | 52.5 | - | 47.8 | - | - | - |
2025-04-24 04:40 pm | WSW | 7 | 8 | - | - | - | - | 29.93 | - | 52.7 | - | 48.0 | - | - | - |
2025-04-24 04:20 pm | WSW | 6 | 7 | - | - | - | - | 29.94 | - | 54.0 | - | 46.4 | - | - | - |
2025-04-24 04:10 pm | W | 5 | 6 | - | - | - | - | 29.95 | - | 54.5 | - | 47.3 | - | - | - |
2025-04-24 04:00 pm | W | 5 | 6 | - | - | - | - | 29.95 | -0.06 | 53.8 | - | 47.5 | - | - | - |
2025-04-24 03:50 pm | W | 6 | 7 | - | - | - | - | 29.95 | - | 54.7 | - | 46.0 | - | - | - |
2025-04-24 03:40 pm | WNW | 4 | 5 | - | - | - | - | 29.96 | - | 54.1 | - | 44.4 | - | - | - |
2025-04-24 03:30 pm | W | 3 | 5 | - | - | - | - | 29.96 | - | 54.3 | - | 44.4 | - | - | - |
2025-04-24 03:20 pm | WNW | 4 | 5 | - | - | - | - | 29.96 | - | 53.6 | - | 45.0 | - | - | - |
2025-04-24 03:10 pm | W | 2 | 4 | - | - | - | - | 29.97 | - | 53.8 | - | 45.7 | - | - | - |
2025-04-24 03:00 pm | NW | 3 | 4 | - | - | - | - | 29.97 | -0.06 | 53.4 | - | 42.4 | - | - | - |
2025-04-24 02:50 pm | NW | 4 | 4 | - | - | - | - | 29.97 | - | 52.7 | - | 41.9 | - | - | - |
2025-04-24 02:40 pm | NW | 3 | 4 | - | - | - | - | 29.98 | - | 52.7 | - | 43.0 | - | - | - |
2025-04-24 02:30 pm | NW | 4 | 5 | - | - | - | - | 29.98 | - | 53.1 | - | 43.0 | - | - | - |
2025-04-24 02:20 pm | WNW | 5 | 5 | - | - | - | - | 29.98 | - | 53.1 | - | 42.6 | - | - | - |
2025-04-24 02:10 pm | WNW | 5 | 6 | - | - | - | - | 29.99 | - | 52.9 | - | 42.4 | - | - | - |
2025-04-24 02:00 pm | WNW | 5 | 6 | - | - | - | - | 29.99 | -0.05 | 52.2 | - | 42.4 | - | - | - |
2025-04-24 01:50 pm | NW | 5 | 6 | - | - | - | - | 29.99 | - | 51.8 | - | 43.9 | - | - | - |