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Beryl A AWS wave buoy daily means for May 2017

Daily means from the Beryl A AWS wave buoy for May 2017, including available wave height, period, direction, wind and sea temperature data.

Last observation shown

Data available:  to 

Monthly means for

Latest

Period Summary

Programmatically generated summary. Hog Says

743 wave-buoy observations covered all 31 days. Typical wave height was 3.9 ft (10th–90th percentile 2.3–7.9 ft), while mean reported wave period; measurement type unavailable was 5 seconds (10th–90th percentile 4–6 seconds). Typical wind was 15 mph (10th–90th percentile 5.8–28.9 mph). All 2,972 checked values passed quality control. Across 3 comparable years, mean wave height was below the same-month mean of 5.5 ft and mean wave period was below the same-month mean of 5.5 seconds.

Generated only from the observations and comparisons shown on this page.

Typical Wave Height

3.9ft
Mean: 4.9 ft
P10–P90: 2.3 — 7.9 ft
Recorded extremes

1.3 — 18.7 ft

Mean Wave Period

5secs
P10–P90: 4 — 6secs
Recorded extremes

3 — 8secs

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 743 hourly samples

Typical Wind

Variable, 15mph
Mean: 16.2 mph
P10–P90: 5.8 — 28.9 mph
Recorded extremes

0 — 43.8 mph

Circular concentration: 11%

Compared With Previous Mays

Historical baseline from 2,225 observations across 3 years.

Wave Height
4.9ft
0.6ft below mean
Historical mean 5.5ft
Wave Period
5s
0.5s below mean
Historical mean 5.5s
Water Temperature
–
Not enough comparable data

Chart showing grouped wave observations for Beryl A AWS. Use the table on this page for a text version of the same measurements. To open hourly observations, use a linked day name in the table.

About Beryl A AWS wave buoy

Beryl A AWS (WMO 63110) is an automatic weather station on a privately operated oil platform in the northern North Sea. It is not a free-floating wave buoy. The station provides offshore meteorological observations for operations and forecasting, with available parameters determined by the platform's installed sensors.

Metrics are rows; days run left to right.
Beryl A AWS wave buoy daily means May 2017Last observation shown
Metric
Mean wave height (ft)753544QC rejectedQC rejected54561054742254342334444QC rejected
Mean observed period(s)6Reported5Reported4Reported6Reported5Reported4Reported7Reported7Reported5Reported5Reported6Reported5Reported6Reported5Reported5Reported5Reported5Reported5Reported4Reported5Reported5Reported4Reported4Reported4Reported4Reported4Reported4Reported4Reported5Reported6Reported5Reported
Mean wave power(kW/m)-------------------------------
Mean wind directionSEconcentration 100%Econcentration 88%NNEconcentration 97%ENEconcentration 69%NNEconcentration 90%NNEconcentration 98%Nconcentration 99%NNEconcentration 98%NWconcentration 91%Nconcentration 92%ESEconcentration 37%SEconcentration 97%SEconcentration 94%Sconcentration 94%SSEconcentration 56%Sconcentration 83%Sconcentration 84%NNEconcentration 38%ENEconcentration 83%SEconcentration 79%Sconcentration 84%SSEconcentration 96%SSWconcentration 32%Wconcentration 93%Wconcentration 94%Sconcentration 99%SSEconcentration 98%Variableconcentration 21%NNWconcentration 97%WSWconcentration 40%NWconcentration 93%
Mean wind speed (mph)2313146817363015962232191825124918131820101519231511616
Mean water temperature(°C)-------------------------------

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Wave metric colour key

Colours move through the scale as each number increases. They do not by themselves mean that conditions are good, safe or suitable for you.

Wave & swell height0–40+ ft
Wave & swell period0–22+ s
Wind speed0–75 mph

The displayed numbers remain the source of truth; colour is an additional visual cue.

Which wave period is shown?

The table shows the best period measurement supplied for each observation. It is not necessarily the energy period used to calculate wave power.

Tp
Peak period: the period at the strongest spectral peak.
Tavg
The provider's average wave period.
Tm02
A mean period calculated from the wave spectrum.
Tz
Mean zero-crossing period.
Reported
A legacy value whose period type was not recorded.
Mixed
A daily or monthly mean containing more than one period type.

Wave power needs a genuine energy period (Te). SurfHog does not substitute Tp, Tavg, Tm02 or Tz when Te is missing.

What does buoy wave power mean?

kW/m means kilowatts of wave power per metre of wave crest. It describes the rate at which the observed sea state carries energy past the buoy.

Unlike the shore-directed forecast value, buoy wave power is the total power at the observation point. It is not projected towards a particular beach and does not predict breaking wave height.

In deep water, wave power can be calculated with:

P is approximately 0.49 times significant wave height squared times wave energy period.

P is power in kW/m, Hs is significant wave height in metres, and Te is wave energy period in seconds.

  • Provider-reported power is used when available.
  • Otherwise, a value is calculated only when both significant height and a genuine energy period are available. The ≈ symbol marks calculated values.
  • A dash is shown instead of substituting peak, Tm02, zero-crossing or other period measurements.
  • Daily and monthly figures use the mean of hourly-normalized observation power values; they are not calculated from mean height and period.

Wave direction, spectrum, water depth and local bathymetry still matter. Wave power is best read alongside height, period and direction rather than as a standalone surf-quality score.

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