Sevenstones wave buoy observations on Tue, Aug 21, 2012
Hourly readings from the Sevenstones wave buoy for Tue, Aug 21, 2012, including available wave height, period, direction, wind and sea temperature data.
Period Summary
Programmatically generated summary. Hog Says23 wave-buoy observations were recorded during the day. Typical wave height was 3.3 ft (10th–90th percentile 3–3.9 ft), while the reported wave period averaged 6.9 seconds (10th–90th percentile 6–7 seconds). Typical wind was 15 mph (10th–90th percentile 8.3–20.7 mph) and mean water temperature was 16.6°C (10th–90th percentile 16.4–16.8°C). 1 of 113 checked values (0.9%) were excluded by quality control.
Generated only from the observations and comparisons shown on this page.
Line chart showing wave height, wave period and sea temperature for Sevenstones. Use the detailed observations table below for the same data in text form.
Sorry, there is no wave data :(
for Tue, Aug 21, 2012
About Sevenstones wave buoy
Sevenstones Lightship (WMO 62107) is a UK Met Office station west of Land's End, near the Seven Stones reef in the Western Approaches. Its exposed offshore position shows Atlantic systems before they reach Cornwall and the western English Channel and provides context for a notoriously hazardous shipping area.
Its current data source reports wave height, wave period, wave direction, directional spread, wind conditions, sea temperature, separate swell and wind-sea components and wave spectra.
| Metric | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Significant wave height (ft) | 3 | 3 | 3 | 4 | 4 | 3 | 4 | 5 | 4 | 4 | 3 | - | 3 | 3 | 3 | 3 | 4 | 3 | 3 | 4 | 3 | 4 | 3 | QC rejected |
| Maximum wave height (ft) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Maximum crest height (ft) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Maximum trough height (ft) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Peak period (s) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Average period (s) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Mean period Tm02 (s) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Zero-crossing period (s) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Maximum wave period (s) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Reported period (s) | 7 | 7 | 7 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | - | - | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 |
| Peak wave direction | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Mean wave direction | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Directional spread (°) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Wind direction | SW | SSW | S | SSW | SSW | SSW | SW | SSW | SW | SW | SW | - | SW | WSW | WSW | W | WSW | WSW | WSW | W | W | WNW | W | W |
| Wind speed (mph) | 10 | 8 | 8 | 10 | 11 | 13 | 11 | 10 | 16 | 15 | 8 | - | 9 | 10 | 15 | 18 | 17 | 18 | 23 | 22 | 21 | 21 | 17 | 18 |
| Water temperature(°C) | 16.2 | 16.5 | 17.0 | 17.0 | 16.7 | 16.5 | 16.4 | 16.5 | 16.5 | 16.6 | 16.4 | - | - | 16.4 | 16.8 | 16.7 | 16.8 | 16.7 | 16.6 | 16.4 | 16.4 | 16.5 | 16.3 | 16.6 |
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Learn how SurfHog combines, checks and summarizes observations in the data and methodology notes.