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Anasuria AWS wave buoy daily means for Apr 2011

Daily means from the Anasuria AWS wave buoy for Apr 2011, 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

699 wave-buoy observations covered all 30 days. Typical wave height was 3.3 ft (10th–90th percentile 2–7.2 ft), while mean reported wave period; measurement type unavailable was 4.9 seconds (10th–90th percentile 4–6 seconds). Typical wind was 11.4 mph (10th–90th percentile 4.7–22 mph). 63 of 2,717 checked values (2.3%) were excluded by quality control. Across 1 comparable year, mean wave height was below the same-month mean of 4.3 ft and mean wave period was above the same-month mean of 4.7 seconds.

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

Typical Wave Height

3.3ft
Mean: 4 ft
P10–P90: 2 — 7.2 ft
Recorded extremes

1.3 — 11.2 ft

Available for 636 of 699 hourly samples

Mean Wave Period

4.9secs
P10–P90: 4 — 6secs
Recorded extremes

3 — 8secs

Available for 636 of 699 hourly samples

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 699 hourly samples

Typical Wind

Variable, 11.4mph
Mean: 12.7 mph
P10–P90: 4.7 — 22 mph
Recorded extremes

1.1 — 32.3 mph

Circular concentration: 29%

Available for 691 of 699 hourly samples

Compared With Previous Aprils

Historical baseline from 708 observations across 1 year.

Wave Height
4ft
0.3ft below mean
Historical mean 4.3ft
Wave Period
4.9s
0.2s above mean
Historical mean 4.7s
Water Temperature
–
Not enough comparable data

Chart showing grouped wave observations for Anasuria 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 Anasuria AWS wave buoy

Anasuria AWS (WMO 62164) is an automatic weather station on privately operated offshore infrastructure in the central North Sea. It is not a free-floating wave buoy. The station contributes meteorological and, when fitted, sea-state observations from an area with extensive offshore energy activity.

Metrics are rows; days run left to right.
Anasuria AWS wave buoy daily means Apr 2011Last observation shown
Metric
Mean wave height (ft)77478767533QC rejected4323233223432332--
Mean observed period(s)5Reported5Reported4Reported5Reported6Reported5Reported5Reported6Reported7Reported5Reported4Reported5Reported5Reported4Reported4Reported6Reported6Reported5Reported5Reported5Reported4Reported4Reported4Reported5Reported5Reported5Reported5Reported5Reported--
Mean wave power(kW/m)------------------------------
Mean wind directionSSWconcentration 91%SSWconcentration 73%SSWconcentration 97%SSWconcentration 95%SSWconcentration 96%SWconcentration 97%Wconcentration 93%Wconcentration 92%WSWconcentration 39%Sconcentration 98%WSWconcentration 63%Wconcentration 96%SSWconcentration 91%SSWconcentration 98%SSWconcentration 86%WSWconcentration 88%SSWconcentration 87%SEconcentration 96%ESEconcentration 58%NEconcentration 40%SEconcentration 65%ESEconcentration 96%SEconcentration 86%SWconcentration 69%NNEconcentration 72%Nconcentration 96%Nconcentration 93%NEconcentration 95%ENEconcentration 98%ENEconcentration 98%
Mean wind speed (mph)191615232423172051113181310967108461515679981510
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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