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 GRMM4 - Grand Marais, MI 
Previous observations
TIME (EDT) |
 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 |
2025-05-18 04:40 am | N | 14.0 | 15.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 04:30 am | N | 15.0 | 17.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 04:20 am | N | 15.0 | 17.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 04:10 am | N | 15.0 | 18.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 04:00 am | N | 15.9 | 19.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 03:50 am | N | 17.1 | 20.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 03:40 am | N | 17.1 | 20.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 03:30 am | N | 17.1 | 21.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 03:20 am | N | 18.1 | 20.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 03:10 am | NNW | 17.1 | 19.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 03:00 am | NNW | 18.1 | 20.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 02:50 am | NNW | 17.1 | 20.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 02:40 am | NNW | 17.1 | 20.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 02:30 am | NNW | 17.1 | 21.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 02:20 am | NNW | 18.1 | 21.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 02:10 am | NNW | 18.1 | 21.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 02:00 am | NNW | 19.0 | 24.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 01:50 am | NW | 20.0 | 22.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 01:40 am | NW | 19.0 | 22.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 01:30 am | NW | 21.0 | 22.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 01:20 am | NW | 20.0 | 22.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 01:10 am | NW | 18.1 | 21.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 01:00 am | NW | 17.1 | 18.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 12:50 am | NW | 17.1 | 20.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 12:40 am | NW | 17.1 | 20.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 12:30 am | NW | 17.1 | 20.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 12:20 am | NW | 17.1 | 18.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 12:10 am | NW | 15.9 | 18.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-18 12:00 am | WNW | 15.9 | 19.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 11:40 pm | NW | 17.1 | 20.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 11:30 pm | WNW | 17.1 | 20.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 11:20 pm | NW | 15.9 | 19.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 11:10 pm | WNW | 15.0 | 17.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 11:00 pm | WNW | 15.0 | 17.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 10:50 pm | WNW | 14.0 | 15.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 10:40 pm | WNW | 13.0 | 15.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 10:30 pm | W | 13.0 | 14.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 10:20 pm | W | 12.0 | 14.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 10:10 pm | W | 13.0 | 18.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 10:00 pm | W | 15.9 | 19.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 09:50 pm | WNW | 15.0 | 19.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 09:40 pm | W | 17.1 | 19.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 09:30 pm | W | 15.9 | 22.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 09:20 pm | W | 18.1 | 21.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 09:10 pm | W | 17.1 | 25.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 09:00 pm | W | 19.0 | 22.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 08:50 pm | WNW | 20.0 | 25.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 08:40 pm | WNW | 24.1 | 28.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 08:30 pm | WNW | 20.0 | 22.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 08:20 pm | W | 19.0 | 26.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 08:10 pm | W | 22.9 | 26.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 08:00 pm | W | 22.0 | 25.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 07:50 pm | W | 21.0 | 27.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 07:40 pm | W | 22.9 | 27.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 07:30 pm | W | 21.0 | 27.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 07:20 pm | W | 22.9 | 28.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 07:10 pm | W | 24.1 | 28.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 07:00 pm | W | 25.1 | 28.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 06:50 pm | W | 22.9 | 26.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 06:40 pm | W | 21.0 | 31.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 06:30 pm | W | 25.1 | 28.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 06:20 pm | W | 22.0 | 25.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 06:10 pm | W | 22.0 | 28.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 06:00 pm | W | 24.1 | 28.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 05:50 pm | W | 25.1 | 29.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 05:40 pm | W | 25.1 | 29.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 05:30 pm | W | 22.9 | 28.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 05:20 pm | W | 24.1 | 27.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 05:10 pm | W | 22.0 | 26.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 05:00 pm | W | 22.9 | 25.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 04:50 pm | W | 21.0 | 24.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 04:40 pm | W | 20.0 | 22.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 04:30 pm | W | 20.0 | 22.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 04:20 pm | W | 21.0 | 22.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 04:10 pm | W | 19.0 | 22.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 04:00 pm | W | 18.1 | 21.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 03:50 pm | W | 17.1 | 22.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 03:40 pm | W | 17.1 | 20.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 03:30 pm | W | 17.1 | 22.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 03:20 pm | W | 18.1 | 21.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 03:10 pm | W | 17.1 | 19.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 03:00 pm | W | 17.1 | 21.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 02:50 pm | W | 19.0 | 22.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 02:40 pm | W | 18.1 | 20.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 02:30 pm | W | 18.1 | 19.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 02:20 pm | W | 17.1 | 18.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 02:10 pm | W | 15.9 | 18.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 02:00 pm | W | 17.1 | 19.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 01:50 pm | W | 17.1 | 19.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 01:40 pm | W | 15.0 | 18.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 01:30 pm | W | 17.1 | 20.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 01:20 pm | W | 17.1 | 21.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 01:10 pm | W | 17.1 | 21.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 01:00 pm | W | 17.1 | 19.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 12:50 pm | W | 15.9 | 18.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 12:40 pm | W | 15.9 | 17.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 12:30 pm | W | 14.0 | 15.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 12:20 pm | W | 14.0 | 18.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 12:10 pm | W | 15.0 | 18.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 12:00 pm | W | 15.0 | 15.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 11:50 am | W | 15.0 | 15.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 11:40 am | W | 14.0 | 15.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 11:30 am | W | 13.0 | 14.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 11:20 am | W | 12.0 | 13.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 11:10 am | W | 12.0 | 14.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 11:00 am | W | 13.0 | 14.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 10:50 am | W | 11.1 | 13.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 10:40 am | W | 12.0 | 13.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 10:30 am | W | 12.0 | 13.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 10:20 am | W | 13.0 | 15.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 10:10 am | W | 14.0 | 15.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 10:00 am | WNW | 12.0 | 14.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 09:50 am | WNW | 13.0 | 15.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 09:40 am | NE | 8.0 | 8.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 09:30 am | ENE | 2.9 | 4.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 09:20 am | E | 2.9 | 4.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 09:10 am | - | 0.0 | 4.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 09:00 am | E | 2.9 | - | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 08:50 am | - | 0.0 | 5.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 08:40 am | ENE | 6.0 | 6.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 08:30 am | ENE | 2.9 | 5.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 08:20 am | - | 0.0 | 6.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 08:10 am | ENE | 5.1 | 6.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 08:00 am | ENE | 2.9 | 5.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 06:50 am | ENE | 9.9 | 11.1 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 06:40 am | E | 9.9 | 9.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 06:30 am | ENE | 8.0 | 9.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 06:20 am | E | 8.9 | 8.9 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 06:10 am | E | 7.0 | 8.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 06:00 am | E | 7.0 | 7.0 | - | - | - | - | - | - | - | - | - | - | - | - |
2025-05-17 04:50 am | ENE | 13.0 | 14.0 | - | - | - | - | - | - | - | - | - | - | - | - |