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 pm | | 30.11 in |
Highest 1-minute Wind Speed |
Time (PDT) | WSPD | WDIR |
8:21 pm | 8 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 |
2025-04-17 08:20 pm | WNW | 9 | 11 | - | - | - | - | 30.11 | - | 52.5 | - | 39.4 | - | - | - |
2025-04-17 08:10 pm | WNW | 10 | 11 | - | - | - | - | 30.11 | - | 52.7 | - | 38.5 | - | - | - |
2025-04-17 08:00 pm | WNW | 8 | 11 | - | - | - | - | 30.11 | -0.02 | 53.2 | - | 36.7 | - | - | - |
2025-04-17 07:50 pm | NW | 6 | 9 | - | - | - | - | 30.11 | - | 54.3 | - | 32.5 | - | - | - |
2025-04-17 07:40 pm | NW | 6 | 8 | - | - | - | - | 30.11 | - | 55.4 | - | 31.1 | - | - | - |
2025-04-17 07:30 pm | NW | 8 | 9 | - | - | - | - | 30.11 | - | 55.8 | - | 29.8 | - | - | - |
2025-04-17 07:20 pm | NW | 8 | 9 | - | - | - | - | 30.11 | - | 55.9 | - | 29.3 | - | - | - |
2025-04-17 07:10 pm | WNW | 9 | 10 | - | - | - | - | 30.11 | - | 56.3 | - | 28.8 | - | - | - |
2025-04-17 07:00 pm | WNW | 9 | 10 | - | - | - | - | 30.11 | -0.03 | 56.1 | - | 30.6 | - | - | - |
2025-04-17 06:50 pm | WNW | 9 | 11 | - | - | - | - | 30.11 | - | 55.2 | - | 32.9 | - | - | - |
2025-04-17 06:40 pm | WNW | 9 | 10 | - | - | - | - | 30.11 | - | 54.7 | - | 33.8 | - | - | - |
2025-04-17 06:30 pm | WNW | 8 | 10 | - | - | - | - | 30.12 | - | 54.1 | - | 35.2 | - | - | - |
2025-04-17 06:20 pm | NW | 8 | 10 | - | - | - | - | 30.12 | - | 55.4 | - | 32.9 | - | - | - |
2025-04-17 06:10 pm | NW | 10 | 11 | - | - | - | - | 30.12 | - | 55.0 | - | 32.0 | - | - | - |
2025-04-17 06:00 pm | NW | 10 | 11 | - | - | - | - | 30.12 | -0.04 | 54.5 | - | 33.4 | - | - | - |
2025-04-17 05:50 pm | NW | 11 | 12 | - | - | - | - | 30.13 | - | 55.2 | - | 30.6 | - | - | - |
2025-04-17 05:40 pm | NW | 11 | 12 | - | - | - | - | 30.12 | - | 55.2 | - | 31.3 | - | - | - |
2025-04-17 05:30 pm | WNW | 10 | 12 | - | - | - | - | 30.12 | - | 54.9 | - | 33.3 | - | - | - |
2025-04-17 05:20 pm | WNW | 10 | 12 | - | - | - | - | 30.13 | - | 54.1 | - | 35.8 | - | - | - |
2025-04-17 05:10 pm | WNW | 9 | 12 | - | - | - | - | 30.13 | - | 53.8 | - | 37.9 | - | - | - |
2025-04-17 05:00 pm | W | 8 | 11 | - | - | - | - | 30.13 | -0.04 | 53.6 | - | 39.4 | - | - | - |
2025-04-17 04:50 pm | W | 7 | 9 | - | - | - | - | 30.14 | - | 53.4 | - | 38.7 | - | - | - |
2025-04-17 04:40 pm | W | 7 | 9 | - | - | - | - | 30.14 | - | 52.2 | - | 39.9 | - | - | - |
2025-04-17 04:30 pm | WSW | 7 | 9 | - | - | - | - | 30.14 | - | 51.4 | - | 42.8 | - | - | - |
2025-04-17 04:20 pm | WSW | 6 | 9 | - | - | - | - | 30.14 | - | 54.5 | - | 39.4 | - | - | - |
2025-04-17 04:10 pm | W | 5 | 8 | - | - | - | - | 30.14 | - | 55.8 | - | 35.1 | - | - | - |
2025-04-17 04:00 pm | WNW | 6 | 7 | - | - | - | - | 30.14 | -0.04 | 55.8 | - | 34.2 | - | - | - |
2025-04-17 03:50 pm | WNW | 5 | 7 | - | - | - | - | 30.14 | - | 54.9 | - | 37.9 | - | - | - |
2025-04-17 03:40 pm | W | 5 | 6 | - | - | - | - | 30.15 | - | 54.5 | - | 38.1 | - | - | - |
2025-04-17 03:30 pm | W | 5 | 7 | - | - | - | - | 30.15 | - | 54.5 | - | 37.8 | - | - | - |
2025-04-17 03:20 pm | WNW | 6 | 7 | - | - | - | - | 30.15 | - | 54.1 | - | 38.7 | - | - | - |
2025-04-17 03:10 pm | WNW | 5 | 6 | - | - | - | - | 30.16 | - | 53.4 | - | 38.5 | - | - | - |
2025-04-17 03:00 pm | NW | 5 | 6 | - | - | - | - | 30.16 | -0.03 | 53.4 | - | 37.4 | - | - | - |
2025-04-17 02:50 pm | NW | 5 | 6 | - | - | - | - | 30.17 | - | 52.9 | - | 39.2 | - | - | - |
2025-04-17 02:40 pm | NW | 5 | 6 | - | - | - | - | 30.17 | - | 52.3 | - | 39.9 | - | - | - |
2025-04-17 02:30 pm | NW | 6 | 7 | - | - | - | - | 30.17 | - | 52.5 | - | 39.9 | - | - | - |
2025-04-17 02:20 pm | NW | 7 | 8 | - | - | - | - | 30.17 | - | 52.0 | - | 39.9 | - | - | - |
2025-04-17 02:10 pm | NW | 7 | 8 | - | - | - | - | 30.17 | - | 51.4 | - | 41.0 | - | - | - |
2025-04-17 02:00 pm | WNW | 6 | 8 | - | - | - | - | 30.17 | -0.03 | 51.6 | - | 41.7 | - | - | - |
2025-04-17 01:50 pm | WNW | 5 | 7 | - | - | - | - | 30.18 | - | 51.6 | - | 41.7 | - | - | - |
2025-04-17 01:40 pm | NW | 5 | 6 | - | - | - | - | 30.17 | - | 51.1 | - | 41.7 | - | - | - |
2025-04-17 01:30 pm | W | 4 | 6 | - | - | - | - | 30.17 | - | 51.1 | - | 43.2 | - | - | - |
2025-04-17 01:20 pm | WNW | 5 | 7 | - | - | - | - | 30.17 | - | 51.3 | - | 41.9 | - | - | - |
2025-04-17 01:10 pm | WNW | 5 | 7 | - | - | - | - | 30.17 | - | 51.3 | - | 42.1 | - | - | - |
2025-04-17 01:00 pm | WNW | 6 | 8 | - | - | - | - | 30.18 | -0.02 | 50.9 | - | 41.7 | - | - | - |
2025-04-17 12:50 pm | W | 8 | 9 | - | - | - | - | 30.18 | - | 49.8 | - | 42.4 | - | - | - |
2025-04-17 12:40 pm | WSW | 7 | 8 | - | - | - | - | 30.18 | - | 49.5 | - | 42.8 | - | - | - |
2025-04-17 12:30 pm | WSW | 6 | 8 | - | - | - | - | 30.19 | - | 50.0 | - | 42.8 | - | - | - |
2025-04-17 12:20 pm | W | 7 | 9 | - | - | - | - | 30.19 | - | 49.6 | - | 42.8 | - | - | - |
2025-04-17 12:10 pm | W | 7 | 8 | - | - | - | - | 30.19 | - | 49.8 | - | 43.2 | - | - | - |
2025-04-17 12:00 pm | W | 6 | 8 | - | - | - | - | 30.19 | +0.00 | 49.8 | - | 43.0 | - | - | - |
2025-04-17 11:50 am | W | 6 | 8 | - | - | - | - | 30.19 | - | 50.4 | - | 41.9 | - | - | - |
2025-04-17 11:40 am | W | 5 | 7 | - | - | - | - | 30.19 | - | 49.8 | - | 41.9 | - | - | - |
2025-04-17 11:30 am | W | 5 | 6 | - | - | - | - | 30.19 | - | 49.8 | - | 42.8 | - | - | - |
2025-04-17 11:20 am | W | 4 | 5 | - | - | - | - | 30.19 | - | 49.5 | - | 42.3 | - | - | - |
2025-04-17 11:10 am | W | 4 | 5 | - | - | - | - | 30.20 | - | 49.6 | - | 42.4 | - | - | - |
2025-04-17 11:00 am | WSW | 3 | 5 | - | - | - | - | 30.20 | +0.00 | 49.8 | - | 40.3 | - | - | - |
2025-04-17 10:50 am | WSW | 2 | 3 | - | - | - | - | 30.20 | - | 49.8 | - | 37.9 | - | - | - |
2025-04-17 10:40 am | W | 1 | 3 | - | - | - | - | 30.20 | - | 49.6 | - | 37.8 | - | - | - |
2025-04-17 10:30 am | NNW | 1 | 2 | - | - | - | - | 30.20 | - | 49.6 | - | 34.0 | - | - | - |
2025-04-17 10:20 am | NNW | 1 | 2 | - | - | - | - | 30.20 | - | 49.1 | - | 36.0 | - | - | - |
2025-04-17 10:10 am | NNW | 2 | 3 | - | - | - | - | 30.20 | - | 49.1 | - | 37.6 | - | - | - |
2025-04-17 10:00 am | NNE | 2 | 3 | - | - | - | - | 30.20 | +0.00 | 48.7 | - | 36.7 | - | - | - |
2025-04-17 09:50 am | NNE | 3 | 4 | - | - | - | - | 30.20 | - | 48.6 | - | 38.3 | - | - | - |
2025-04-17 09:40 am | NE | 4 | 5 | - | - | - | - | 30.19 | - | 49.3 | - | 36.0 | - | - | - |
2025-04-17 09:30 am | NNE | 6 | 7 | - | - | - | - | 30.20 | - | 50.2 | - | 30.0 | - | - | - |
2025-04-17 09:20 am | NNE | 6 | 7 | - | - | - | - | 30.19 | - | 49.5 | - | 32.2 | - | - | - |
2025-04-17 09:10 am | NNE | 5 | 7 | - | - | - | - | 30.20 | - | 49.1 | - | 33.8 | - | - | - |
2025-04-17 09:00 am | NNE | 5 | 7 | - | - | - | - | 30.19 | +0.02 | 48.9 | - | 37.2 | - | - | - |
2025-04-17 08:50 am | NNE | 5 | 6 | - | - | - | - | 30.20 | - | 49.6 | - | 34.5 | - | - | - |
2025-04-17 08:40 am | NNE | 6 | 8 | - | - | - | - | 30.20 | - | 49.6 | - | 31.8 | - | - | - |
2025-04-17 08:30 am | N | 7 | 8 | - | - | - | - | 30.19 | - | 48.4 | - | 36.3 | - | - | - |
2025-04-17 08:20 am | N | 6 | 8 | - | - | - | - | 30.19 | - | 48.4 | - | 38.5 | - | - | - |
2025-04-17 08:10 am | N | 8 | 8 | - | - | - | - | 30.19 | - | 48.6 | - | 38.5 | - | - | - |
2025-04-17 08:00 am | N | 8 | 8 | - | - | - | - | 30.20 | +0.02 | 48.7 | - | 38.5 | - | - | - |
2025-04-17 07:50 am | N | 8 | 10 | - | - | - | - | 30.20 | - | 49.1 | - | 36.3 | - | - | - |
2025-04-17 07:40 am | N | 8 | 10 | - | - | - | - | 30.19 | - | 49.3 | - | 36.1 | - | - | - |
2025-04-17 07:30 am | N | 6 | 7 | - | - | - | - | 30.19 | - | 49.3 | - | 38.1 | - | - | - |
2025-04-17 07:20 am | N | 6 | 7 | - | - | - | - | 30.19 | - | 50.0 | - | 36.0 | - | - | - |
2025-04-17 07:10 am | N | 6 | 7 | - | - | - | - | 30.19 | - | 50.4 | - | 34.2 | - | - | - |
2025-04-17 07:00 am | N | 6 | 7 | - | - | - | - | 30.19 | +0.02 | 50.4 | - | 34.2 | - | - | - |
2025-04-17 06:50 am | N | 6 | 8 | - | - | - | - | 30.19 | - | 50.5 | - | 33.4 | - | - | - |
2025-04-17 06:40 am | N | 5 | 7 | - | - | - | - | 30.18 | - | 50.4 | - | 33.6 | - | - | - |
2025-04-17 06:30 am | N | 5 | 7 | - | - | - | - | 30.18 | - | 49.8 | - | 36.5 | - | - | - |
2025-04-17 06:20 am | N | 5 | 6 | - | - | - | - | 30.18 | - | 50.7 | - | 32.9 | - | - | - |
2025-04-17 06:10 am | NW | 6 | 7 | - | - | - | - | 30.17 | - | 50.0 | - | 34.5 | - | - | - |
2025-04-17 06:00 am | NNW | 5 | 6 | - | - | - | - | 30.17 | +0.02 | 50.0 | - | 35.8 | - | - | - |
2025-04-17 05:50 am | NNW | 5 | 6 | - | - | - | - | 30.17 | - | 50.4 | - | 35.1 | - | - | - |
2025-04-17 05:40 am | NNW | 6 | 8 | - | - | - | - | 30.18 | - | 50.5 | - | 34.5 | - | - | - |
2025-04-17 05:30 am | NW | 6 | 9 | - | - | - | - | 30.17 | - | 50.0 | - | 36.1 | - | - | - |
2025-04-17 05:20 am | NW | 4 | 7 | - | - | - | - | 30.17 | - | 50.0 | - | 36.5 | - | - | - |
2025-04-17 05:10 am | NW | 4 | 6 | - | - | - | - | 30.17 | - | 49.8 | - | 36.0 | - | - | - |
2025-04-17 05:00 am | WNW | 5 | 6 | - | - | - | - | 30.17 | +0.03 | 49.5 | - | 37.0 | - | - | - |
2025-04-17 04:50 am | NNW | 2 | 3 | - | - | - | - | 30.17 | - | 49.1 | - | 36.5 | - | - | - |
2025-04-17 04:40 am | - | 0 | 2 | - | - | - | - | 30.17 | - | 49.1 | - | 37.6 | - | - | - |
2025-04-17 04:30 am | - | 0 | 2 | - | - | - | - | 30.17 | - | 49.8 | - | 36.7 | - | - | - |
2025-04-17 04:20 am | NE | 2 | 3 | - | - | - | - | 30.17 | - | 49.8 | - | 36.9 | - | - | - |
2025-04-17 04:10 am | NNE | 4 | 5 | - | - | - | - | 30.17 | - | 50.0 | - | 36.0 | - | - | - |
2025-04-17 04:00 am | N | 5 | 6 | - | - | - | - | 30.17 | +0.03 | 49.6 | - | 38.8 | - | - | - |
2025-04-17 03:50 am | N | 5 | 6 | - | - | - | - | 30.16 | - | 49.8 | - | 38.3 | - | - | - |
2025-04-17 03:40 am | NNW | 6 | 7 | - | - | - | - | 30.16 | - | 49.6 | - | 39.6 | - | - | - |
2025-04-17 03:30 am | NNW | 6 | 7 | - | - | - | - | 30.16 | - | 50.2 | - | 40.1 | - | - | - |
2025-04-17 03:20 am | NW | 6 | 7 | - | - | - | - | 30.16 | - | 50.4 | - | 39.4 | - | - | - |
2025-04-17 03:10 am | NW | 5 | 6 | - | - | - | - | 30.16 | - | 50.2 | - | 39.6 | - | - | - |
2025-04-17 03:00 am | NNW | 5 | 6 | - | - | - | - | 30.15 | +0.01 | 50.5 | - | 39.7 | - | - | - |
2025-04-17 02:50 am | NNW | 6 | 7 | - | - | - | - | 30.15 | - | 50.5 | - | 39.4 | - | - | - |
2025-04-17 02:40 am | NW | 6 | 8 | - | - | - | - | 30.15 | - | 49.8 | - | 40.8 | - | - | - |
2025-04-17 02:30 am | NW | 7 | 8 | - | - | - | - | 30.15 | - | 49.6 | - | 41.5 | - | - | - |
2025-04-17 02:20 am | NW | 8 | 9 | - | - | - | - | 30.15 | - | 49.6 | - | 42.3 | - | - | - |
2025-04-17 02:10 am | NW | 9 | 10 | - | - | - | - | 30.15 | - | 49.6 | - | 42.1 | - | - | - |
2025-04-17 02:00 am | WNW | 10 | 11 | - | - | - | - | 30.14 | +0.01 | 49.8 | - | 41.9 | - | - | - |
2025-04-17 01:50 am | WNW | 10 | 12 | - | - | - | - | 30.14 | - | 49.8 | - | 41.9 | - | - | - |
2025-04-17 01:40 am | NW | 11 | 12 | - | - | - | - | 30.14 | - | 50.0 | - | 41.7 | - | - | - |
2025-04-17 01:30 am | NW | 10 | 12 | - | - | - | - | 30.14 | - | 50.4 | - | 41.9 | - | - | - |
2025-04-17 01:20 am | NW | 11 | 12 | - | - | - | - | 30.14 | - | 50.7 | - | 41.0 | - | - | - |
2025-04-17 01:10 am | NW | 12 | 12 | - | - | - | - | 30.14 | - | 51.4 | - | 39.4 | - | - | - |
2025-04-17 01:00 am | NW | 11 | 13 | - | - | - | - | 30.14 | +0.01 | 52.0 | - | 37.9 | - | - | - |
2025-04-17 12:50 am | NW | 11 | 13 | - | - | - | - | 30.14 | - | 51.1 | - | 39.6 | - | - | - |
2025-04-17 12:40 am | WNW | 10 | 11 | - | - | - | - | 30.14 | - | 51.8 | - | 38.8 | - | - | - |
2025-04-17 12:30 am | WNW | 10 | 11 | - | - | - | - | 30.14 | - | 52.3 | - | 37.6 | - | - | - |
2025-04-17 12:20 am | WNW | 9 | 10 | - | - | - | - | 30.14 | - | 53.2 | - | 35.4 | - | - | - |
2025-04-17 12:10 am | WNW | 6 | 7 | - | - | - | - | 30.14 | - | 53.6 | - | 34.0 | - | - | - |
2025-04-17 12:00 am | NW | 7 | 8 | - | - | - | - | 30.14 | +0.03 | 53.2 | - | 36.0 | - | - | - |
2025-04-16 11:50 pm | WNW | 7 | 9 | - | - | - | - | 30.14 | - | 54.0 | - | 34.3 | - | - | - |
2025-04-16 11:40 pm | NW | 6 | 8 | - | - | - | - | 30.14 | - | 54.1 | - | 32.4 | - | - | - |
2025-04-16 11:30 pm | WNW | 7 | 8 | - | - | - | - | 30.14 | - | 52.7 | - | 37.2 | - | - | - |
2025-04-16 11:20 pm | WNW | 6 | 6 | - | - | - | - | 30.14 | - | 53.6 | - | 35.4 | - | - | - |
2025-04-16 11:10 pm | NW | 7 | 9 | - | - | - | - | 30.14 | - | 54.5 | - | 33.8 | - | - | - |
2025-04-16 11:00 pm | NW | 10 | 11 | - | - | - | - | 30.13 | +0.03 | 53.8 | - | 35.2 | - | - | - |
2025-04-16 10:50 pm | WNW | 9 | 10 | - | - | - | - | 30.13 | - | 52.5 | - | 38.5 | - | - | - |
2025-04-16 10:40 pm | NW | 10 | 11 | - | - | - | - | 30.13 | - | 54.7 | - | 34.2 | - | - | - |
2025-04-16 10:30 pm | NW | 10 | 11 | - | - | - | - | 30.13 | - | 54.3 | - | 34.5 | - | - | - |
2025-04-16 10:20 pm | NNW | 9 | 9 | - | - | - | - | 30.13 | - | 55.0 | - | 33.1 | - | - | - |
2025-04-16 10:10 pm | NNW | 9 | 9 | - | - | - | - | 30.13 | - | 54.3 | - | 34.7 | - | - | - |
2025-04-16 10:00 pm | NNW | 10 | 12 | - | - | - | - | 30.13 | +0.04 | 54.7 | - | 35.1 | - | - | - |
2025-04-16 09:50 pm | NNW | 11 | 12 | - | - | - | - | 30.12 | - | 53.8 | - | 36.5 | - | - | - |
2025-04-16 09:40 pm | NNW | 10 | 11 | - | - | - | - | 30.12 | - | 53.2 | - | 37.9 | - | - | - |
2025-04-16 09:30 pm | NNW | 11 | 12 | - | - | - | - | 30.12 | - | 53.6 | - | 37.9 | - | - | - |
2025-04-16 09:20 pm | NNW | 12 | 14 | - | - | - | - | 30.12 | - | 54.5 | - | 36.0 | - | - | - |
2025-04-16 09:10 pm | NW | 12 | 14 | - | - | - | - | 30.12 | - | 54.3 | - | 36.7 | - | - | - |
2025-04-16 09:00 pm | NW | 12 | 17 | - | - | - | - | 30.11 | +0.02 | 53.4 | - | 37.9 | - | - | - |
2025-04-16 08:50 pm | NW | 13 | 15 | - | - | - | - | 30.11 | - | 53.2 | - | 38.3 | - | - | - |
2025-04-16 08:40 pm | NNW | 12 | 14 | - | - | - | - | 30.11 | - | 53.8 | - | 38.3 | - | - | - |
2025-04-16 08:30 pm | NNW | 13 | 14 | - | - | - | - | 30.10 | - | 56.7 | - | 32.5 | - | - | - |
2025-04-16 08:20 pm | NNW | 13 | 14 | - | - | - | - | 30.10 | - | 57.0 | - | 31.8 | - | - | - |
2025-04-16 08:10 pm | NNW | 13 | 15 | - | - | - | - | 30.10 | - | 57.9 | - | 30.2 | - | - | - |
2025-04-16 08:00 pm | NW | 13 | 15 | - | - | - | - | 30.10 | +0.02 | 57.0 | - | 31.1 | - | - | - |
2025-04-16 07:50 pm | NW | 13 | 14 | - | - | - | - | 30.09 | - | 55.8 | - | 34.0 | - | - | - |