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Anasuria AWS wave buoy daily means for Apr 2015

Daily means from the Anasuria AWS wave buoy for Apr 2015, 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

714 wave-buoy observations covered all 30 days. Typical wave height was 4.9 ft (10th–90th percentile 2.3–8.9 ft), while mean reported wave period; measurement type unavailable was 5.4 seconds (10th–90th percentile 4–7 seconds). Typical wind was 11.4 mph (10th–90th percentile 5.8–22.7 mph) and mean water temperature was 7.4°C (10th–90th percentile 7–8.2°C). All 3,505 checked values passed quality control. Across 5 comparable years, mean wave height was below the same-month mean of 5.3 ft and mean wave period was above the same-month mean of 5.3 seconds.

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

Typical Wave Height

4.9ft
Mean: 5.1 ft
P10–P90: 2.3 — 8.9 ft
Recorded extremes

1.6 — 14.8 ft

Mean Wave Period

5.4secs
P10–P90: 4 — 7secs
Recorded extremes

3 — 8secs

Mean Water Temperature

7.4°C
P10–P90: 7 — 8.2°C
Recorded extremes

6.8 — 10°C

Available for 649 of 714 hourly samples

Typical Wind

W, 11.4mph
Mean: 13 mph
P10–P90: 5.8 — 22.7 mph
Recorded extremes

0 — 32.2 mph

Circular concentration: 44%

Compared With Previous Aprils

Historical baseline from 3,409 observations across 5 years.

Wave Height
5.1ft
0.2ft below mean
Historical mean 5.3ft
Wave Period
5.4s
0.1s above mean
Historical mean 5.3s
Water Temperature
7.4°C
0.3°C above mean
Historical mean 7.1°C

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 2015Last observation shown
Metric
Mean wave height (ft)1296533234378676443532234788656
Mean observed period(s)7Reported6Reported7Reported7Reported5Reported5Reported4Reported5Reported5Reported4Reported5Reported5Reported5Reported5Reported5Reported5Reported6Reported5Reported5Reported5Reported4Reported4Reported4Reported7Reported6Reported7Reported6Reported6Reported5Reported6Reported
Mean wave power(kW/m)------------------------------
Mean wind directionWNWconcentration 95%NNWconcentration 94%SEconcentration 92%SSEconcentration 86%WNWconcentration 90%Wconcentration 52%Wconcentration 96%Sconcentration 55%Sconcentration 98%Sconcentration 95%SWconcentration 70%WSWconcentration 92%WSWconcentration 64%SWconcentration 96%Wconcentration 90%WNWconcentration 98%Nconcentration 85%NNWconcentration 89%NNEconcentration 94%NNEconcentration 58%WNWconcentration 95%NWconcentration 87%Wconcentration 91%SSWconcentration 87%Wconcentration 85%Wconcentration 57%WSWconcentration 67%SWconcentration 73%SSWconcentration 82%NNWconcentration 68%
Mean wind speed (mph)24178910810101414192017191713611114121196191219121315
Mean water temperature(°C)7.07.07.07.07.07.17.27.37.27.37.17.07.07.17.17.27.77.47.58.37.88.18.38.48.17.97.77.67.67.6

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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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