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Anasuria AWS wave buoy daily means for Apr 2012

Daily means from the Anasuria AWS wave buoy for Apr 2012, 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

650 wave-buoy observations covered 28 of 30 days (93%). Typical wave height was 7.1 ft (10th–90th percentile 4.3–9.8 ft), while mean reported wave period; measurement type unavailable was 6 seconds (10th–90th percentile 5–7 seconds). Typical wind was 13.9 mph (10th–90th percentile 8.1–22 mph) and mean water temperature was 7.4°C (10th–90th percentile 7.2–7.6°C). 26 of 3,203 checked values (0.8%) were excluded by quality control. Across 2 comparable years, mean wave height was above the same-month mean of 4.1 ft and mean wave period was above the same-month mean of 4.8 seconds.

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

Typical Wave Height

7.1ft
Mean: 7.1 ft
P10–P90: 4.3 — 9.8 ft
Recorded extremes

3 — 15.7 ft

Available for 646 of 650 hourly samples

Mean Wave Period

6secs
P10–P90: 5 — 7secs
Recorded extremes

4 — 9secs

Available for 624 of 650 hourly samples

Mean Water Temperature

7.4°C
P10–P90: 7.2 — 7.6°C
Recorded extremes

7.1 — 8°C

Available for 607 of 650 hourly samples

Typical Wind

NNE, 13.9mph
Mean: 14.7 mph
P10–P90: 8.1 — 22 mph
Recorded extremes

2.2 — 37 mph

Circular concentration: 33%

Compared With Previous Aprils

Historical baseline from 1,344 observations across 2 years.

Wave Height
7.1ft
3ft above mean
Historical mean 4.1ft
Wave Period
6s
1.2s above mean
Historical mean 4.8s
Water Temperature
7.4°C
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 2012Last observation shown
Metric
Mean wave height (ft)10109865QC rejected555510998710578--46788875
Mean observed period(s)6Reported8Reported7Reported6Reported5Reported5Reported7Reported5Reported5Reported5Reported5Reported7Reported7Reported6Reported6Reported6Reported6Reported6Reported5Reported6Reported--6Reported6Reported6Reported6Reported7Reported8Reported6Reported5Reported
Mean wave power(kW/m)------------------------------
Mean wind directionNWconcentration 83%Nconcentration 90%ENEconcentration 97%NNEconcentration 89%Wconcentration 92%NNWconcentration 80%NNWconcentration 51%SSWconcentration 90%SSWconcentration 77%Variableconcentration 9%WNWconcentration 95%NWconcentration 91%Nconcentration 94%Nconcentration 95%NNWconcentration 84%WNWconcentration 73%SSEconcentration 95%SEconcentration 97%Econcentration 97%ESEconcentration 98%--Econcentration 91%Econcentration 95%ENEconcentration 95%NNEconcentration 86%Nconcentration 94%NNEconcentration 90%NEconcentration 96%ENEconcentration 96%
Mean wind speed (mph)2291813171291415119161619181422121917--911151815101614
Mean water temperature(°C)7.47.57.37.37.27.27.37.37.37.37.57.47.37.37.47.37.37.47.47.3--7.57.57.57.57.57.67.67.7

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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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