Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
70-foot plus waves predicted for Portuguese big wave tow surfing competition.
Surf Forecasts:

The current surf forecast for Slaughterhouse at 8PM is: 1.8m 14s primary swell from a North direction and 1.4m 13s secondary swell from a Northwest direction, 0.5m 5s secondary swell from a Southwest direction (forecast issued at 01:00pm December 15). The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 6.5ft (2.0m) | 13s |
| Afternoon (15 Dec) | 6ft (1.8m) | 14s |
| Evening (15 Dec) | 5.5ft (1.7m) | 14s |
Table - waves today at Slaughterhouse. (Swell directed towards the surf break)
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | NW | WNW | WNW | WNW | WNW | WNW | WNW | WNW | NNW |
| Period(s) (?) | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 14 |
Wave (?)Graph | ||||||||||||||||||||||||
| 1099 | 1175 | 1263 | 1227 | 1064 | 1033 | 888 | 875 | 734 | 667 | 485 | 477 | 572 | 660 | 577 | 642 | 760 | 749 | 848 | 890 | 862 | 616 | 500 | 585 | |
Wind (km/h) | SSW | S | S | SSW | SSW | S | SSW | S | S | SSW | WNW | SE | S | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SSW | S | SSW | SSW |
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 10:48AM 0.45 | 1:33AM 0.78 | 11:37AM 0.42 | 2:04AM 0.82 | 12:21PM 0.41 | 2:35AM 0.85 | ||||||||||||||||||
Low Tide / height (m) | 5:44PM 0.12 | 8:37AM 0.39 | 6:15PM 0.09 | 9:13AM 0.36 | 6:48PM 0.07 | |||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:56 |
| Sunset | - | - | 5:46 | - | - | - | - | - | - | - | 5:47 | - | - | - | - | - | - | - | 5:47 | - | - | - | - | - |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 24 | 26 | 26 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 25 | 24 | 24 |
| Feels °C (?) | 24 | 24 | 26 | 25 | 25 | 24 | 25 | 26 | 25 | 26 | 28 | 29 | 26 | 26 | 25 | 25 | 25 | 25 | 26 | 24 | 24 | 25 | 24 | 25 |

70-foot plus waves predicted for Portuguese big wave tow surfing competition.

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