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 |
8:30 am | | 29.79 in |
Highest 1-minute Wind Speed |
Time (PDT) | WSPD | WDIR |
8:22 am | 12 kts | WNW ( 300 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 |
2025-05-12 08:20 am | WNW | 11 | 12 | - | - | - | - | 29.79 | - | 49.1 | - | 47.5 | - | - | - |
2025-05-12 08:10 am | WNW | 10 | 11 | - | - | - | - | 29.79 | - | 49.1 | - | 47.7 | - | - | - |
2025-05-12 08:00 am | WNW | 10 | 12 | - | - | - | - | 29.79 | +0.03 | 49.1 | - | 47.7 | - | - | - |
2025-05-12 07:50 am | WNW | 9 | 12 | - | - | - | - | 29.79 | - | 48.9 | - | 47.5 | - | - | - |
2025-05-12 07:40 am | WNW | 8 | 10 | - | - | - | - | 29.79 | - | 49.1 | - | 47.7 | - | - | - |
2025-05-12 07:30 am | WNW | 8 | 10 | - | - | - | - | 29.79 | - | 49.3 | - | 48.0 | - | - | - |
2025-05-12 07:20 am | WNW | 8 | 10 | - | - | - | - | 29.79 | - | 49.1 | - | 48.0 | - | - | - |
2025-05-12 07:10 am | WNW | 8 | 9 | - | - | - | - | 29.79 | - | 48.9 | - | 48.0 | - | - | - |
2025-05-12 07:00 am | WNW | 8 | 9 | - | - | - | - | 29.79 | +0.02 | 48.9 | - | 48.0 | - | - | - |
2025-05-12 06:50 am | WNW | 8 | 9 | - | - | - | - | 29.78 | - | 48.9 | - | 48.0 | - | - | - |
2025-05-12 06:40 am | WNW | 8 | 9 | - | - | - | - | 29.78 | - | 48.9 | - | 48.0 | - | - | - |
2025-05-12 06:30 am | NW | 8 | 9 | - | - | - | - | 29.78 | - | 48.9 | - | 48.0 | - | - | - |
2025-05-12 06:20 am | WNW | 9 | 10 | - | - | - | - | 29.78 | - | 48.9 | - | 48.0 | - | - | - |
2025-05-12 06:10 am | NW | 8 | 9 | - | - | - | - | 29.77 | - | 48.9 | - | 48.2 | - | - | - |
2025-05-12 06:00 am | NW | 8 | 10 | - | - | - | - | 29.77 | +0.00 | 48.9 | - | 48.2 | - | - | - |
2025-05-12 05:50 am | NW | 9 | 10 | - | - | - | - | 29.77 | - | 48.9 | - | 48.2 | - | - | - |
2025-05-12 05:40 am | NW | 10 | 12 | - | - | - | - | 29.77 | - | 49.1 | - | 48.2 | - | - | - |
2025-05-12 05:30 am | NW | 11 | 12 | - | - | - | - | 29.77 | - | 49.1 | - | 48.2 | - | - | - |
2025-05-12 05:20 am | WNW | 11 | 13 | - | - | - | - | 29.77 | - | 49.1 | - | 48.0 | - | - | - |
2025-05-12 05:10 am | WNW | 12 | 14 | - | - | - | - | 29.77 | - | 49.1 | - | 47.8 | - | - | - |
2025-05-12 05:00 am | WNW | 12 | 15 | - | - | - | - | 29.76 | +0.00 | 49.1 | - | 47.7 | - | - | - |
2025-05-12 04:50 am | WNW | 11 | 14 | - | - | - | - | 29.77 | - | 49.1 | - | 47.7 | - | - | - |
2025-05-12 04:40 am | WNW | 12 | 14 | - | - | - | - | 29.77 | - | 49.1 | - | 47.8 | - | - | - |
2025-05-12 04:30 am | W | 13 | 15 | - | - | - | - | 29.77 | - | 49.1 | - | 47.8 | - | - | - |
2025-05-12 04:20 am | W | 13 | 15 | - | - | - | - | 29.77 | - | 49.1 | - | 47.8 | - | - | - |
2025-05-12 04:10 am | W | 12 | 15 | - | - | - | - | 29.77 | - | 49.3 | - | 48.0 | - | - | - |
2025-05-12 04:00 am | W | 12 | 13 | - | - | - | - | 29.77 | +0.00 | 49.5 | - | 48.0 | - | - | - |
2025-05-12 03:50 am | W | 10 | 13 | - | - | - | - | 29.77 | - | 49.5 | - | 47.8 | - | - | - |
2025-05-12 03:40 am | W | 10 | 12 | - | - | - | - | 29.77 | - | 49.6 | - | 47.8 | - | - | - |
2025-05-12 03:30 am | W | 8 | 10 | - | - | - | - | 29.77 | - | 49.6 | - | 47.7 | - | - | - |
2025-05-12 03:20 am | WNW | 8 | 9 | - | - | - | - | 29.77 | - | 49.5 | - | 47.7 | - | - | - |
2025-05-12 03:10 am | WNW | 6 | 9 | - | - | - | - | 29.76 | - | 49.5 | - | 47.8 | - | - | - |
2025-05-12 03:00 am | WNW | 5 | 7 | - | - | - | - | 29.77 | -0.01 | 49.5 | - | 47.7 | - | - | - |
2025-05-12 02:50 am | WNW | 4 | 7 | - | - | - | - | 29.77 | - | 49.6 | - | 47.7 | - | - | - |
2025-05-12 02:40 am | W | 4 | 6 | - | - | - | - | 29.77 | - | 49.6 | - | 47.3 | - | - | - |
2025-05-12 02:30 am | W | 4 | 5 | - | - | - | - | 29.77 | - | 49.8 | - | 47.1 | - | - | - |
2025-05-12 02:20 am | W | 6 | 7 | - | - | - | - | 29.77 | - | 50.0 | - | 46.8 | - | - | - |
2025-05-12 02:10 am | W | 4 | 5 | - | - | - | - | 29.77 | - | 50.2 | - | 46.6 | - | - | - |
2025-05-12 02:00 am | W | 3 | 5 | - | - | - | - | 29.77 | +0.00 | 50.0 | - | 46.2 | - | - | - |
2025-05-12 01:50 am | - | 0 | 2 | - | - | - | - | 29.77 | - | 50.0 | - | 46.2 | - | - | - |
2025-05-12 01:40 am | - | 0 | 2 | - | - | - | - | 29.77 | - | 50.0 | - | 46.2 | - | - | - |
2025-05-12 01:30 am | - | 0 | 2 | - | - | - | - | 29.77 | - | 50.0 | - | 46.2 | - | - | - |
2025-05-12 01:20 am | WNW | 2 | 4 | - | - | - | - | 29.77 | - | 50.0 | - | 46.2 | - | - | - |
2025-05-12 01:10 am | W | 4 | 5 | - | - | - | - | 29.77 | - | 50.0 | - | 46.4 | - | - | - |
2025-05-12 01:00 am | W | 2 | 3 | - | - | - | - | 29.78 | -0.01 | 50.0 | - | 46.4 | - | - | - |
2025-05-12 12:50 am | WSW | 1 | 2 | - | - | - | - | 29.78 | - | 50.0 | - | 46.4 | - | - | - |
2025-05-12 12:40 am | WSW | 1 | 2 | - | - | - | - | 29.78 | - | 50.0 | - | 46.4 | - | - | - |
2025-05-12 12:30 am | WSW | 3 | 4 | - | - | - | - | 29.78 | - | 50.0 | - | 46.4 | - | - | - |
2025-05-12 12:20 am | SW | 5 | 5 | - | - | - | - | 29.78 | - | 50.0 | - | 46.4 | - | - | - |
2025-05-12 12:10 am | SSW | 5 | 5 | - | - | - | - | 29.78 | - | 50.0 | - | 46.4 | - | - | - |
2025-05-12 12:00 am | SW | 5 | 5 | - | - | - | - | 29.78 | +0.00 | 50.0 | - | 46.8 | - | - | - |
2025-05-11 11:50 pm | SSW | 5 | 5 | - | - | - | - | 29.78 | - | 49.6 | - | 46.8 | - | - | - |
2025-05-11 11:40 pm | SSW | 4 | 5 | - | - | - | - | 29.78 | - | 49.8 | - | 47.3 | - | - | - |
2025-05-11 11:30 pm | SSW | 4 | 5 | - | - | - | - | 29.78 | - | 49.8 | - | 46.9 | - | - | - |
2025-05-11 11:20 pm | S | 5 | 5 | - | - | - | - | 29.78 | - | 50.0 | - | 47.1 | - | - | - |
2025-05-11 11:10 pm | SSW | 5 | 5 | - | - | - | - | 29.78 | - | 49.8 | - | 46.9 | - | - | - |
2025-05-11 11:00 pm | S | 5 | 5 | - | - | - | - | 29.78 | +0.01 | 49.8 | - | 47.1 | - | - | - |
2025-05-11 10:50 pm | S | 5 | 5 | - | - | - | - | 29.78 | - | 50.0 | - | 47.1 | - | - | - |
2025-05-11 10:40 pm | SSW | 5 | 6 | - | - | - | - | 29.78 | - | 50.0 | - | 46.9 | - | - | - |
2025-05-11 10:30 pm | SSW | 5 | 6 | - | - | - | - | 29.78 | - | 50.2 | - | 46.9 | - | - | - |
2025-05-11 10:20 pm | SW | 4 | 5 | - | - | - | - | 29.78 | - | 50.2 | - | 46.9 | - | - | - |
2025-05-11 10:10 pm | SW | 5 | 5 | - | - | - | - | 29.78 | - | 50.4 | - | 46.9 | - | - | - |
2025-05-11 10:00 pm | SW | 5 | 7 | - | - | - | - | 29.79 | +0.03 | 50.2 | - | 46.9 | - | - | - |
2025-05-11 09:50 pm | SSW | 6 | 6 | - | - | - | - | 29.79 | - | 50.4 | - | 47.1 | - | - | - |
2025-05-11 09:40 pm | SSW | 7 | 7 | - | - | - | - | 29.78 | - | 50.4 | - | 46.8 | - | - | - |
2025-05-11 09:30 pm | SSW | 6 | 7 | - | - | - | - | 29.78 | - | 50.5 | - | 46.6 | - | - | - |
2025-05-11 09:20 pm | S | 6 | 7 | - | - | - | - | 29.78 | - | 50.5 | - | 46.8 | - | - | - |
2025-05-11 09:10 pm | SSW | 6 | 7 | - | - | - | - | 29.78 | - | 50.4 | - | 46.6 | - | - | - |
2025-05-11 09:00 pm | SSW | 7 | 8 | - | - | - | - | 29.78 | +0.02 | 50.5 | - | 46.8 | - | - | - |
2025-05-11 08:50 pm | SSW | 7 | 9 | - | - | - | - | 29.78 | - | 50.5 | - | 46.8 | - | - | - |
2025-05-11 08:40 pm | SSW | 6 | 8 | - | - | - | - | 29.78 | - | 50.9 | - | 46.9 | - | - | - |
2025-05-11 08:30 pm | SW | 6 | 7 | - | - | - | - | 29.77 | - | 51.1 | - | 46.4 | - | - | - |
2025-05-11 08:20 pm | SW | 5 | 6 | - | - | - | - | 29.77 | - | 50.7 | - | 46.2 | - | - | - |
2025-05-11 08:10 pm | S | 5 | 6 | - | - | - | - | 29.77 | - | 50.9 | - | 46.6 | - | - | - |
2025-05-11 08:00 pm | WSW | 4 | 7 | - | - | - | - | 29.77 | +0.00 | 51.3 | - | 45.9 | - | - | - |
2025-05-11 07:50 pm | W | 6 | 8 | - | - | - | - | 29.76 | - | 51.4 | - | 45.5 | - | - | - |
2025-05-11 07:40 pm | W | 7 | 9 | - | - | - | - | 29.76 | - | 51.6 | - | 45.1 | - | - | - |
2025-05-11 07:30 pm | W | 8 | 10 | - | - | - | - | 29.76 | - | 51.6 | - | 44.8 | - | - | - |
2025-05-11 07:20 pm | W | 8 | 11 | - | - | - | - | 29.76 | - | 51.6 | - | 44.8 | - | - | - |
2025-05-11 07:10 pm | WNW | 9 | 11 | - | - | - | - | 29.76 | - | 51.6 | - | 44.6 | - | - | - |
2025-05-11 07:00 pm | WNW | 10 | 12 | - | - | - | - | 29.75 | -0.02 | 51.6 | - | 44.2 | - | - | - |
2025-05-11 06:50 pm | WNW | 11 | 13 | - | - | - | - | 29.75 | - | 51.6 | - | 44.6 | - | - | - |
2025-05-11 06:40 pm | WNW | 11 | 13 | - | - | - | - | 29.75 | - | 51.3 | - | 45.0 | - | - | - |
2025-05-11 06:30 pm | WNW | 11 | 14 | - | - | - | - | 29.75 | - | 51.3 | - | 45.5 | - | - | - |
2025-05-11 06:20 pm | W | 10 | 13 | - | - | - | - | 29.76 | - | 51.4 | - | 45.9 | - | - | - |
2025-05-11 06:10 pm | WNW | 10 | 13 | - | - | - | - | 29.75 | - | 51.4 | - | 46.0 | - | - | - |
2025-05-11 06:00 pm | WNW | 11 | 14 | - | - | - | - | 29.75 | -0.02 | 51.1 | - | 46.2 | - | - | - |
2025-05-11 05:50 pm | WNW | 13 | 15 | - | - | - | - | 29.75 | - | 51.1 | - | 46.4 | - | - | - |
2025-05-11 05:40 pm | NW | 14 | 16 | - | - | - | - | 29.75 | - | 51.1 | - | 46.0 | - | - | - |
2025-05-11 05:30 pm | NW | 14 | 16 | - | - | - | - | 29.75 | - | 51.3 | - | 45.9 | - | - | - |
2025-05-11 05:20 pm | WNW | 13 | 16 | - | - | - | - | 29.75 | - | 51.4 | - | 45.9 | - | - | - |
2025-05-11 05:10 pm | WNW | 13 | 15 | - | - | - | - | 29.76 | - | 51.3 | - | 46.0 | - | - | - |
2025-05-11 05:00 pm | WNW | 13 | 15 | - | - | - | - | 29.76 | -0.01 | 51.1 | - | 46.4 | - | - | - |
2025-05-11 04:50 pm | WNW | 12 | 15 | - | - | - | - | 29.76 | - | 50.9 | - | 46.6 | - | - | - |
2025-05-11 04:40 pm | WNW | 12 | 15 | - | - | - | - | 29.76 | - | 50.9 | - | 46.8 | - | - | - |
2025-05-11 04:30 pm | WNW | 11 | 15 | - | - | - | - | 29.77 | - | 51.1 | - | 47.3 | - | - | - |
2025-05-11 04:20 pm | WNW | 11 | 13 | - | - | - | - | 29.77 | - | 51.3 | - | 46.9 | - | - | - |
2025-05-11 04:10 pm | WNW | 10 | 13 | - | - | - | - | 29.77 | - | 51.3 | - | 46.6 | - | - | - |
2025-05-11 04:00 pm | WNW | 10 | 12 | - | - | - | - | 29.77 | -0.02 | 51.1 | - | 46.8 | - | - | - |
2025-05-11 03:50 pm | WNW | 9 | 11 | - | - | - | - | 29.77 | - | 51.3 | - | 47.1 | - | - | - |
2025-05-11 03:40 pm | NW | 9 | 9 | - | - | - | - | 29.77 | - | 51.3 | - | 46.6 | - | - | - |
2025-05-11 03:30 pm | NW | 9 | 9 | - | - | - | - | 29.77 | - | 51.4 | - | 46.2 | - | - | - |
2025-05-11 03:20 pm | NNW | 8 | 9 | - | - | - | - | 29.78 | - | 51.8 | - | 46.0 | - | - | - |
2025-05-11 03:10 pm | NNW | 8 | 9 | - | - | - | - | 29.77 | - | 51.8 | - | 44.6 | - | - | - |
2025-05-11 03:00 pm | NNW | 8 | 8 | - | - | - | - | 29.77 | -0.03 | 51.4 | - | 45.1 | - | - | - |
2025-05-11 02:50 pm | NNW | 7 | 7 | - | - | - | - | 29.78 | - | 51.3 | - | 45.1 | - | - | - |
2025-05-11 02:40 pm | NNW | 7 | 8 | - | - | - | - | 29.78 | - | 51.1 | - | 46.4 | - | - | - |
2025-05-11 02:30 pm | NNW | 7 | 8 | - | - | - | - | 29.78 | - | 51.4 | - | 46.6 | - | - | - |
2025-05-11 02:20 pm | NNW | 9 | 9 | - | - | - | - | 29.78 | - | 51.6 | - | 45.0 | - | - | - |
2025-05-11 02:10 pm | NNW | 9 | 10 | - | - | - | - | 29.78 | - | 52.0 | - | 44.6 | - | - | - |
2025-05-11 02:00 pm | NW | 8 | 10 | - | - | - | - | 29.78 | -0.03 | 51.8 | - | 43.2 | - | - | - |
2025-05-11 01:50 pm | NW | 7 | 9 | - | - | - | - | 29.78 | - | 52.3 | - | 43.9 | - | - | - |
2025-05-11 01:40 pm | WNW | 6 | 8 | - | - | - | - | 29.78 | - | 54.0 | - | 41.5 | - | - | - |
2025-05-11 01:30 pm | W | 5 | 5 | - | - | - | - | 29.79 | - | 54.1 | - | 41.7 | - | - | - |
2025-05-11 01:20 pm | W | 5 | 5 | - | - | - | - | 29.79 | - | 54.0 | - | 41.9 | - | - | - |
2025-05-11 01:10 pm | W | 5 | 6 | - | - | - | - | 29.79 | - | 53.6 | - | 42.3 | - | - | - |
2025-05-11 01:00 pm | W | 5 | 6 | - | - | - | - | 29.79 | -0.02 | 53.1 | - | 42.1 | - | - | - |
2025-05-11 12:50 pm | W | 4 | 5 | - | - | - | - | 29.79 | - | 52.5 | - | 42.4 | - | - | - |
2025-05-11 12:40 pm | W | 5 | 6 | - | - | - | - | 29.80 | - | 51.6 | - | 43.3 | - | - | - |
2025-05-11 12:30 pm | W | 5 | 6 | - | - | - | - | 29.80 | - | 51.1 | - | 43.5 | - | - | - |
2025-05-11 12:20 pm | WSW | 5 | 6 | - | - | - | - | 29.80 | - | 50.9 | - | 43.7 | - | - | - |
2025-05-11 12:10 pm | WSW | 6 | 7 | - | - | - | - | 29.80 | - | 50.9 | - | 43.9 | - | - | - |
2025-05-11 12:00 pm | WSW | 6 | 7 | - | - | - | - | 29.80 | -0.02 | 50.9 | - | 43.9 | - | - | - |
2025-05-11 11:50 am | WSW | 6 | 6 | - | - | - | - | 29.80 | - | 50.9 | - | 43.7 | - | - | - |
2025-05-11 11:40 am | WSW | 5 | 5 | - | - | - | - | 29.80 | - | 50.7 | - | 44.4 | - | - | - |
2025-05-11 11:30 am | WSW | 5 | 5 | - | - | - | - | 29.80 | - | 50.7 | - | 44.8 | - | - | - |
2025-05-11 11:20 am | WSW | 5 | 6 | - | - | - | - | 29.80 | - | 50.7 | - | 44.8 | - | - | - |
2025-05-11 11:10 am | WSW | 4 | 5 | - | - | - | - | 29.80 | - | 50.9 | - | 45.0 | - | - | - |
2025-05-11 11:00 am | SSW | 4 | 4 | - | - | - | - | 29.80 | -0.03 | 50.9 | - | 44.8 | - | - | - |
2025-05-11 10:50 am | SSW | 2 | 4 | - | - | - | - | 29.81 | - | 50.7 | - | 45.3 | - | - | - |
2025-05-11 10:40 am | WSW | 2 | 2 | - | - | - | - | 29.81 | - | 50.9 | - | 45.7 | - | - | - |
2025-05-11 10:30 am | S | 4 | 5 | - | - | - | - | 29.81 | - | 50.5 | - | 45.0 | - | - | - |
2025-05-11 10:20 am | S | 4 | 5 | - | - | - | - | 29.81 | - | 50.7 | - | 45.0 | - | - | - |
2025-05-11 10:10 am | S | 4 | 5 | - | - | - | - | 29.81 | - | 50.7 | - | 44.8 | - | - | - |
2025-05-11 10:00 am | S | 4 | 5 | - | - | - | - | 29.81 | -0.03 | 50.5 | - | 44.4 | - | - | - |
2025-05-11 09:50 am | S | 5 | 5 | - | - | - | - | 29.81 | - | 50.5 | - | 44.6 | - | - | - |
2025-05-11 09:40 am | S | 6 | 7 | - | - | - | - | 29.82 | - | 50.4 | - | 44.2 | - | - | - |
2025-05-11 09:30 am | S | 6 | 7 | - | - | - | - | 29.82 | - | 50.2 | - | 44.6 | - | - | - |
2025-05-11 09:20 am | S | 5 | 7 | - | - | - | - | 29.82 | - | 50.2 | - | 45.1 | - | - | - |
2025-05-11 09:10 am | SSW | 6 | 7 | - | - | - | - | 29.82 | - | 50.2 | - | 46.0 | - | - | - |
2025-05-11 09:00 am | SSW | 5 | 6 | - | - | - | - | 29.82 | -0.03 | 50.2 | - | 45.5 | - | - | - |
2025-05-11 08:50 am | SSW | 5 | 6 | - | - | - | - | 29.82 | - | 50.4 | - | 45.3 | - | - | - |
2025-05-11 08:40 am | S | 5 | 7 | - | - | - | - | 29.83 | - | 50.4 | - | 45.5 | - | - | - |
2025-05-11 08:30 am | S | 4 | 5 | - | - | - | - | 29.83 | - | 50.0 | - | 45.1 | - | - | - |
2025-05-11 08:20 am | SSE | 4 | 4 | - | - | - | - | 29.83 | - | 49.8 | - | 45.1 | - | - | - |
2025-05-11 08:10 am | S | 5 | 5 | - | - | - | - | 29.83 | - | 49.5 | - | 45.1 | - | - | - |
2025-05-11 08:00 am | SSE | 4 | 5 | - | - | - | - | 29.83 | -0.03 | 49.3 | - | 45.5 | - | - | - |
2025-05-11 07:50 am | S | 4 | 5 | - | - | - | - | 29.83 | - | 49.1 | - | 45.5 | - | - | - |