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 |
6:50 pm | | 29.78 in |
Highest 1-minute Wind Speed |
Time (PDT) | WSPD | WDIR |
6:42 pm | 19 kts | S ( 170 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 |
2025-03-28 06:40 pm | S | 18 | 20 | - | - | - | - | 29.78 | - | 50.2 | - | 43.5 | - | - | - |
2025-03-28 06:30 pm | S | 19 | 22 | - | - | - | - | 29.78 | - | 50.4 | - | 43.3 | - | - | - |
2025-03-28 06:20 pm | S | 20 | 23 | - | - | - | - | 29.78 | - | 50.4 | - | 43.2 | - | - | - |
2025-03-28 06:10 pm | S | 21 | 23 | - | - | - | - | 29.77 | - | 50.5 | - | 43.2 | - | - | - |
2025-03-28 06:00 pm | S | 20 | 23 | - | - | - | - | 29.76 | +0.05 | 50.5 | - | 43.2 | - | - | - |
2025-03-28 05:50 pm | S | 19 | 23 | - | - | - | - | 29.77 | - | 50.5 | - | 43.0 | - | - | - |
2025-03-28 05:40 pm | S | 20 | 23 | - | - | - | - | 29.76 | - | 50.4 | - | 43.0 | - | - | - |
2025-03-28 05:30 pm | S | 22 | 25 | - | - | - | - | 29.76 | - | 50.5 | - | 42.3 | - | - | - |
2025-03-28 05:20 pm | S | 20 | 24 | - | - | - | - | 29.75 | - | 50.7 | - | 42.4 | - | - | - |
2025-03-28 05:10 pm | S | 19 | 22 | - | - | - | - | 29.75 | - | 50.5 | - | 42.8 | - | - | - |
2025-03-28 05:00 pm | S | 19 | 23 | - | - | - | - | 29.75 | +0.04 | 50.0 | - | 43.5 | - | - | - |
2025-03-28 04:50 pm | S | 20 | 23 | - | - | - | - | 29.75 | - | 49.8 | - | 43.7 | - | - | - |
2025-03-28 04:40 pm | S | 20 | 23 | - | - | - | - | 29.75 | - | 50.0 | - | 43.7 | - | - | - |
2025-03-28 04:30 pm | S | 21 | 25 | - | - | - | - | 29.75 | - | 50.0 | - | 43.7 | - | - | - |
2025-03-28 04:20 pm | S | 21 | 25 | - | - | - | - | 29.75 | - | 50.2 | - | 43.3 | - | - | - |
2025-03-28 04:10 pm | S | 20 | 25 | - | - | - | - | 29.74 | - | 50.2 | - | 43.3 | - | - | - |
2025-03-28 04:00 pm | S | 22 | 25 | - | - | - | - | 29.74 | +0.04 | 50.4 | - | 43.0 | - | - | - |
2025-03-28 03:50 pm | S | 22 | 25 | - | - | - | - | 29.73 | - | 50.5 | - | 42.8 | - | - | - |
2025-03-28 03:40 pm | S | 22 | 26 | - | - | - | - | 29.73 | - | 50.5 | - | 41.9 | - | - | - |
2025-03-28 03:30 pm | S | 21 | 24 | - | - | - | - | 29.73 | - | 50.4 | - | 42.1 | - | - | - |
2025-03-28 03:20 pm | S | 22 | 26 | - | - | - | - | 29.73 | - | 50.2 | - | 42.4 | - | - | - |
2025-03-28 03:10 pm | S | 23 | 28 | - | - | - | - | 29.72 | - | 50.4 | - | 42.1 | - | - | - |
2025-03-28 03:00 pm | S | 24 | 28 | - | - | - | - | 29.72 | +0.04 | 49.8 | - | 41.7 | - | - | - |
2025-03-28 02:50 pm | S | 25 | 29 | - | - | - | - | 29.72 | - | 49.8 | - | 41.9 | - | - | - |
2025-03-28 02:40 pm | S | 23 | 26 | - | - | - | - | 29.71 | - | 49.6 | - | 42.4 | - | - | - |
2025-03-28 02:30 pm | S | 24 | 28 | - | - | - | - | 29.72 | - | 49.8 | - | 43.0 | - | - | - |
2025-03-28 02:20 pm | S | 25 | 29 | - | - | - | - | 29.71 | - | 49.5 | - | 43.5 | - | - | - |
2025-03-28 02:10 pm | S | 25 | 28 | - | - | - | - | 29.71 | - | 49.6 | - | 43.3 | - | - | - |
2025-03-28 02:00 pm | S | 25 | 31 | - | - | - | - | 29.71 | +0.06 | 49.5 | - | 43.0 | - | - | - |
2025-03-28 01:50 pm | S | 24 | 30 | - | - | - | - | 29.71 | - | 49.6 | - | 42.6 | - | - | - |
2025-03-28 01:40 pm | S | 24 | 33 | - | - | - | - | 29.71 | - | 49.6 | - | 42.1 | - | - | - |
2025-03-28 01:30 pm | S | 23 | 27 | - | - | - | - | 29.71 | - | 49.8 | - | 41.9 | - | - | - |
2025-03-28 01:20 pm | S | 24 | 30 | - | - | - | - | 29.70 | - | 49.8 | - | 42.1 | - | - | - |
2025-03-28 01:10 pm | S | 24 | 28 | - | - | - | - | 29.70 | - | 50.0 | - | 42.1 | - | - | - |
2025-03-28 01:00 pm | S | 25 | 30 | - | - | - | - | 29.69 | +0.06 | 49.8 | - | 43.5 | - | - | - |
2025-03-28 12:50 pm | S | 25 | 31 | - | - | - | - | 29.69 | - | 50.2 | - | 43.5 | - | - | - |
2025-03-28 12:40 pm | S | 26 | 32 | - | - | - | - | 29.68 | - | 50.0 | - | 43.5 | - | - | - |
2025-03-28 12:30 pm | S | 26 | 31 | - | - | - | - | 29.68 | - | 50.0 | - | 43.9 | - | - | - |
2025-03-28 12:20 pm | S | 25 | 32 | - | - | - | - | 29.68 | - | 49.8 | - | 43.7 | - | - | - |
2025-03-28 12:10 pm | S | 26 | 33 | - | - | - | - | 29.68 | - | 49.8 | - | 43.9 | - | - | - |
2025-03-28 12:00 pm | S | 27 | 32 | - | - | - | - | 29.67 | +0.06 | 49.8 | - | 44.2 | - | - | - |
2025-03-28 11:50 am | S | 26 | 32 | - | - | - | - | 29.67 | - | 49.6 | - | 44.1 | - | - | - |
2025-03-28 11:40 am | S | 28 | 35 | - | - | - | - | 29.66 | - | 49.8 | - | 43.5 | - | - | - |
2025-03-28 11:30 am | S | 26 | 35 | - | - | - | - | 29.66 | - | 49.5 | - | 43.9 | - | - | - |
2025-03-28 11:20 am | S | 26 | 34 | - | - | - | - | 29.65 | - | 49.3 | - | 44.2 | - | - | - |
2025-03-28 11:10 am | S | 27 | 33 | - | - | - | - | 29.65 | - | 49.1 | - | 43.9 | - | - | - |
2025-03-28 11:00 am | S | 28 | 35 | - | - | - | - | 29.65 | +0.06 | 49.1 | - | 43.9 | - | - | - |
2025-03-28 10:50 am | S | 28 | 32 | - | - | - | - | 29.64 | - | 48.9 | - | 43.9 | - | - | - |
2025-03-28 10:40 am | S | 29 | 35 | - | - | - | - | 29.64 | - | 48.9 | - | 44.2 | - | - | - |
2025-03-28 10:30 am | S | 27 | 33 | - | - | - | - | 29.64 | - | 48.7 | - | 44.1 | - | - | - |
2025-03-28 10:20 am | S | 26 | 33 | - | - | - | - | 29.64 | - | 48.7 | - | 43.9 | - | - | - |
2025-03-28 10:10 am | S | 25 | 30 | - | - | - | - | 29.63 | - | 48.7 | - | 43.3 | - | - | - |
2025-03-28 10:00 am | S | 24 | 29 | - | - | - | - | 29.63 | +0.06 | 48.6 | - | 43.5 | - | - | - |
2025-03-28 09:50 am | S | 27 | 32 | - | - | - | - | 29.63 | - | 48.6 | - | 43.7 | - | - | - |
2025-03-28 09:40 am | S | 27 | 33 | - | - | - | - | 29.63 | - | 48.6 | - | 44.2 | - | - | - |
2025-03-28 09:30 am | S | 28 | 33 | - | - | - | - | 29.62 | - | 48.6 | - | 44.4 | - | - | - |
2025-03-28 09:20 am | S | 26 | 32 | - | - | - | - | 29.62 | - | 48.6 | - | 44.6 | - | - | - |
2025-03-28 09:10 am | S | 27 | 32 | - | - | - | - | 29.62 | - | 48.6 | - | 44.6 | - | - | - |
2025-03-28 09:00 am | S | 27 | 35 | - | - | - | - | 29.62 | +0.06 | 48.7 | - | 44.4 | - | - | - |
2025-03-28 08:50 am | S | 27 | 32 | - | - | - | - | 29.61 | - | 48.6 | - | 44.2 | - | - | - |
2025-03-28 08:40 am | S | 25 | 31 | - | - | - | - | 29.61 | - | 48.6 | - | 44.2 | - | - | - |
2025-03-28 08:30 am | S | 27 | 32 | - | - | - | - | 29.60 | - | 48.6 | - | 44.2 | - | - | - |
2025-03-28 08:20 am | S | 27 | 33 | - | - | - | - | 29.59 | - | 48.6 | - | 44.6 | - | - | - |
2025-03-28 08:10 am | S | 28 | 33 | - | - | - | - | 29.59 | - | 48.4 | - | 44.4 | - | - | - |
2025-03-28 08:00 am | S | 28 | 33 | - | - | - | - | 29.59 | +0.05 | 48.4 | - | 44.8 | - | - | - |
2025-03-28 07:50 am | S | 27 | 32 | - | - | - | - | 29.59 | - | 48.4 | - | 44.8 | - | - | - |
2025-03-28 07:40 am | S | 26 | 32 | - | - | - | - | 29.59 | - | 48.4 | - | 44.2 | - | - | - |
2025-03-28 07:30 am | S | 26 | 32 | - | - | - | - | 29.58 | - | 48.4 | - | 44.1 | - | - | - |
2025-03-28 07:20 am | S | 26 | 34 | - | - | - | - | 29.58 | - | 48.4 | - | 43.9 | - | - | - |
2025-03-28 07:10 am | S | 26 | 31 | - | - | - | - | 29.57 | - | 48.4 | - | 43.9 | - | - | - |
2025-03-28 07:00 am | S | 26 | 30 | - | - | - | - | 29.57 | +0.03 | 48.4 | - | 44.2 | - | - | - |
2025-03-28 06:50 am | S | 25 | 30 | - | - | - | - | 29.57 | - | 48.4 | - | 44.2 | - | - | - |
2025-03-28 06:40 am | S | 25 | 32 | - | - | - | - | 29.57 | - | 48.4 | - | 44.2 | - | - | - |
2025-03-28 06:30 am | S | 25 | 30 | - | - | - | - | 29.57 | - | 48.6 | - | 44.2 | - | - | - |
2025-03-28 06:20 am | S | 26 | 32 | - | - | - | - | 29.57 | - | 48.4 | - | 44.6 | - | - | - |
2025-03-28 06:10 am | S | 26 | 31 | - | - | - | - | 29.56 | - | 48.4 | - | 44.6 | - | - | - |
2025-03-28 06:00 am | S | 25 | 32 | - | - | - | - | 29.56 | +0.04 | 48.4 | - | 44.4 | - | - | - |
2025-03-28 05:50 am | S | 26 | 30 | - | - | - | - | 29.55 | - | 48.4 | - | 44.6 | - | - | - |
2025-03-28 05:40 am | SSE | 28 | 35 | - | - | - | - | 29.55 | - | 48.4 | - | 44.2 | - | - | - |
2025-03-28 05:30 am | S | 29 | 34 | - | - | - | - | 29.55 | - | 48.4 | - | 44.1 | - | - | - |
2025-03-28 05:20 am | SSE | 30 | 35 | - | - | - | - | 29.54 | - | 48.6 | - | 43.9 | - | - | - |
2025-03-28 05:10 am | S | 30 | 36 | - | - | - | - | 29.54 | - | 48.7 | - | 43.9 | - | - | - |
2025-03-28 05:00 am | S | 31 | 39 | - | - | - | - | 29.54 | +0.02 | 48.9 | - | 43.7 | - | - | - |
2025-03-28 04:50 am | S | 32 | 38 | - | - | - | - | 29.53 | - | 48.9 | - | 43.7 | - | - | - |
2025-03-28 04:40 am | S | 34 | 40 | - | - | - | - | 29.53 | - | 49.1 | - | 43.7 | - | - | - |
2025-03-28 04:30 am | S | 31 | 36 | - | - | - | - | 29.53 | - | 48.9 | - | 43.5 | - | - | - |
2025-03-28 04:20 am | SSE | 25 | 30 | - | - | - | - | 29.54 | - | 48.6 | - | 44.2 | - | - | - |
2025-03-28 04:10 am | SSE | 25 | 31 | - | - | - | - | 29.55 | - | 48.4 | - | 44.1 | - | - | - |
2025-03-28 04:00 am | S | 28 | 33 | - | - | - | - | 29.54 | +0.02 | 48.7 | - | 43.2 | - | - | - |
2025-03-28 03:50 am | S | 30 | 35 | - | - | - | - | 29.53 | - | 48.7 | - | 43.0 | - | - | - |
2025-03-28 03:40 am | S | 28 | 33 | - | - | - | - | 29.53 | - | 49.1 | - | 42.4 | - | - | - |
2025-03-28 03:30 am | S | 29 | 36 | - | - | - | - | 29.53 | - | 49.3 | - | 42.1 | - | - | - |
2025-03-28 03:20 am | S | 31 | 41 | - | - | - | - | 29.53 | - | 49.6 | - | 41.5 | - | - | - |
2025-03-28 03:10 am | SSW | 30 | 35 | - | - | - | - | 29.52 | - | 49.6 | - | 41.4 | - | - | - |
2025-03-28 03:00 am | S | 32 | 40 | - | - | - | - | 29.52 | -0.01 | 49.8 | - | 41.7 | - | - | - |
2025-03-28 02:50 am | S | 30 | 36 | - | - | - | - | 29.52 | - | 49.8 | - | 43.0 | - | - | - |
2025-03-28 02:40 am | S | 31 | 40 | - | - | - | - | 29.52 | - | 50.5 | - | 42.6 | - | - | - |
2025-03-28 02:30 am | S | 31 | 38 | - | - | - | - | 29.52 | - | 50.7 | - | 42.6 | - | - | - |
2025-03-28 02:20 am | S | 30 | 36 | - | - | - | - | 29.52 | - | 51.1 | - | 42.3 | - | - | - |
2025-03-28 02:10 am | S | 30 | 36 | - | - | - | - | 29.51 | - | 51.8 | - | 41.5 | - | - | - |
2025-03-28 02:00 am | S | 31 | 39 | - | - | - | - | 29.51 | -0.01 | 52.9 | - | 41.2 | - | - | - |
2025-03-28 01:50 am | S | 22 | 31 | - | - | - | - | 29.50 | - | 52.3 | - | 41.5 | - | - | - |
2025-03-28 01:40 am | S | 20 | 23 | - | - | - | - | 29.51 | - | 52.3 | - | 41.9 | - | - | - |
2025-03-28 01:30 am | SSE | 17 | 21 | - | - | - | - | 29.51 | - | 51.6 | - | 42.1 | - | - | - |
2025-03-28 01:20 am | SSE | 16 | 20 | - | - | - | - | 29.52 | - | 51.3 | - | 42.4 | - | - | - |
2025-03-28 01:10 am | SSE | 18 | 20 | - | - | - | - | 29.52 | - | 51.3 | - | 42.8 | - | - | - |
2025-03-28 01:00 am | S | 17 | 20 | - | - | - | - | 29.52 | -0.02 | 51.3 | - | 42.6 | - | - | - |
2025-03-28 12:50 am | SSE | 14 | 16 | - | - | - | - | 29.52 | - | 51.4 | - | 42.8 | - | - | - |
2025-03-28 12:40 am | S | 14 | 19 | - | - | - | - | 29.53 | - | 51.6 | - | 42.6 | - | - | - |
2025-03-28 12:30 am | S | 16 | 20 | - | - | - | - | 29.53 | - | 51.6 | - | 42.4 | - | - | - |
2025-03-28 12:20 am | S | 20 | 24 | - | - | - | - | 29.53 | - | 52.2 | - | 42.4 | - | - | - |
2025-03-28 12:10 am | S | 23 | 29 | - | - | - | - | 29.53 | - | 52.7 | - | 42.1 | - | - | - |
2025-03-28 12:00 am | S | 21 | 27 | - | - | - | - | 29.53 | +0.02 | 52.7 | - | 41.9 | - | - | - |
2025-03-27 11:50 pm | S | 20 | 23 | - | - | - | - | 29.53 | - | 52.5 | - | 42.3 | - | - | - |
2025-03-27 11:40 pm | S | 23 | 28 | - | - | - | - | 29.53 | - | 52.7 | - | 42.4 | - | - | - |
2025-03-27 11:30 pm | S | 26 | 32 | - | - | - | - | 29.52 | - | 52.9 | - | 42.4 | - | - | - |
2025-03-27 11:20 pm | S | 27 | 32 | - | - | - | - | 29.51 | - | 52.9 | - | 42.6 | - | - | - |
2025-03-27 11:10 pm | S | 26 | 31 | - | - | - | - | 29.51 | - | 53.1 | - | 43.0 | - | - | - |
2025-03-27 11:00 pm | S | 24 | 29 | - | - | - | - | 29.52 | +0.00 | 52.7 | - | 43.7 | - | - | - |
2025-03-27 10:50 pm | S | 21 | 24 | - | - | - | - | 29.52 | - | 52.3 | - | 44.4 | - | - | - |
2025-03-27 10:40 pm | S | 16 | 19 | - | - | - | - | 29.53 | - | 51.8 | - | 45.3 | - | - | - |
2025-03-27 10:30 pm | S | 17 | 20 | - | - | - | - | 29.53 | - | 52.0 | - | 45.3 | - | - | - |
2025-03-27 10:20 pm | S | 20 | 22 | - | - | - | - | 29.53 | - | 52.3 | - | 45.5 | - | - | - |
2025-03-27 10:10 pm | S | 20 | 23 | - | - | - | - | 29.53 | - | 52.9 | - | 45.3 | - | - | - |
2025-03-27 10:00 pm | SSE | 16 | 19 | - | - | - | - | 29.54 | +0.00 | 53.1 | - | 45.0 | - | - | - |
2025-03-27 09:50 pm | S | 15 | 19 | - | - | - | - | 29.53 | - | 53.4 | - | 44.8 | - | - | - |
2025-03-27 09:40 pm | SSE | 18 | 24 | - | - | - | - | 29.53 | - | 53.8 | - | 44.6 | - | - | - |
2025-03-27 09:30 pm | SSE | 20 | 25 | - | - | - | - | 29.52 | - | 53.6 | - | 44.4 | - | - | - |
2025-03-27 09:20 pm | S | 22 | 26 | - | - | - | - | 29.52 | - | 53.6 | - | 44.2 | - | - | - |
2025-03-27 09:10 pm | S | 22 | 28 | - | - | - | - | 29.52 | - | 53.6 | - | 44.2 | - | - | - |
2025-03-27 09:00 pm | SSE | 25 | 30 | - | - | - | - | 29.51 | +0.00 | 53.8 | - | 44.2 | - | - | - |
2025-03-27 08:50 pm | SSE | 25 | 31 | - | - | - | - | 29.50 | - | 53.8 | - | 44.2 | - | - | - |
2025-03-27 08:40 pm | SSE | 22 | 26 | - | - | - | - | 29.51 | - | 53.8 | - | 43.9 | - | - | - |
2025-03-27 08:30 pm | SSE | 20 | 25 | - | - | - | - | 29.52 | - | 53.8 | - | 44.1 | - | - | - |
2025-03-27 08:20 pm | SSE | 22 | 26 | - | - | - | - | 29.52 | - | 53.6 | - | 44.1 | - | - | - |
2025-03-27 08:10 pm | SSE | 18 | 23 | - | - | - | - | 29.52 | - | 52.9 | - | 44.8 | - | - | - |
2025-03-27 08:00 pm | SE | 15 | 18 | - | - | - | - | 29.52 | -0.02 | 52.2 | - | 45.7 | - | - | - |
2025-03-27 07:50 pm | SSE | 15 | 18 | - | - | - | - | 29.52 | - | 52.2 | - | 45.9 | - | - | - |
2025-03-27 07:40 pm | SE | 11 | 16 | - | - | - | - | 29.52 | - | 51.4 | - | 46.0 | - | - | - |
2025-03-27 07:30 pm | S | 9 | 12 | - | - | - | - | 29.53 | - | 51.6 | - | 45.9 | - | - | - |
2025-03-27 07:20 pm | SSW | 12 | 13 | - | - | - | - | 29.53 | - | 51.3 | - | 46.4 | - | - | - |
2025-03-27 07:10 pm | SSW | 13 | 20 | - | - | - | - | 29.53 | - | 52.3 | - | 45.3 | - | - | - |
2025-03-27 07:00 pm | SSE | 13 | 19 | - | - | - | - | 29.53 | -0.03 | 54.5 | - | 42.8 | - | - | - |
2025-03-27 06:50 pm | SE | 12 | 14 | - | - | - | - | 29.52 | - | 55.4 | - | 42.1 | - | - | - |