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Beryl A AWS wave buoy daily means for Jan 2019

Daily means from the Beryl A AWS wave buoy for Jan 2019, 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

741 wave-buoy observations covered all 31 days. Typical wave height was 8.9 ft (10th–90th percentile 4.9–17.4 ft), while mean reported wave period; measurement type unavailable was 6.8 seconds (10th–90th percentile 5–9 seconds). Typical wind was 18.3 mph (10th–90th percentile 8.1–33.3 mph). 32 of 2,964 checked values (1.1%) were excluded by quality control. Across 5 comparable years, mean wave height was below the same-month mean of 12 ft and mean wave period was below the same-month mean of 7.1 seconds.

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

Typical Wave Height

8.9ft
Mean: 10.2 ft
P10–P90: 4.9 — 17.4 ft
Recorded extremes

0 — 26.2 ft

Available for 728 of 741 hourly samples

Mean Wave Period

6.8secs
P10–P90: 5 — 9secs
Recorded extremes

4 — 11secs

Available for 722 of 741 hourly samples

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 741 hourly samples

Typical Wind

WNW, 18.3mph
Mean: 19.8 mph
P10–P90: 8.1 — 33.3 mph
Recorded extremes

0 — 49.4 mph

Circular concentration: 40%

Compared With Previous Januarys

Historical baseline from 3,635 observations across 5 years.

Wave Height
10.2ft
1.8ft below mean
Historical mean 12ft
Wave Period
6.8s
0.3s below mean
Historical mean 7.1s
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 Jan 2019Last observation shown
Metric
Mean wave height (ft)QC rejectedQC rejected565511161061115152013118966814105891497711
Mean observed period(s)9Reported9Reported6Reported5Reported5Reported5Reported6Reported8Reported7Reported5Reported8Reported9Reported8Reported9Reported8Reported7Reported7Reported7Reported7Reported6Reported6Reported7Reported7Reported6Reported6Reported6Reported8Reported6Reported7Reported7Reported7Reported
Mean wave power(kW/m)-------------------------------
Mean wind directionNNWconcentration 94%NNWconcentration 95%Wconcentration 96%WNWconcentration 95%WNWconcentration 97%WNWconcentration 80%WSWconcentration 57%Nconcentration 99%NWconcentration 70%Wconcentration 96%NWconcentration 82%WNWconcentration 91%NNWconcentration 83%NNWconcentration 73%WSWconcentration 63%NWconcentration 53%Nconcentration 89%Wconcentration 58%SSEconcentration 88%SWconcentration 40%SWconcentration 66%Sconcentration 83%SSWconcentration 57%SWconcentration 89%WSWconcentration 64%Variableconcentration 19%NNEconcentration 92%NWconcentration 76%SWconcentration 59%SWconcentration 45%SSEconcentration 93%
Mean wind speed (mph)4018122317152835162316243224212423911191933992015132011928
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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