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Cormorant AWS wave buoy daily means for Apr 2017

Daily means from the Cormorant AWS wave buoy for Apr 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

719 wave-buoy observations covered all 30 days. Typical wave height was 7.9 ft (10th–90th percentile 3.9–14.4 ft), while mean reported wave period; measurement type unavailable was 6.5 seconds (10th–90th percentile 5–8 seconds). Typical wind was 19.7 mph (10th–90th percentile 7.9–30 mph). All 2,876 checked values passed quality control. Across 3 comparable years, mean wave height was above the same-month mean of 7.9 ft and mean wave period was below the same-month mean of 6.6 seconds.

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

Typical Wave Height

7.9ft
Mean: 8.8 ft
P10–P90: 3.9 — 14.4 ft
Recorded extremes

3 — 27.2 ft

Mean Wave Period

6.5secs
P10–P90: 5 — 8secs
Recorded extremes

4 — 11secs

Mean Water Temperature

-°C
P10–P90: - — -°C

Available for 0 of 719 hourly samples

Typical Wind

WNW, 19.7mph
Mean: 19.6 mph
P10–P90: 7.9 — 30 mph
Recorded extremes

2.2 — 45 mph

Circular concentration: 40%

Compared With Previous Aprils

Historical baseline from 2,103 observations across 3 years.

Wave Height
8.8ft
0.9ft above mean
Historical mean 7.9ft
Wave Period
6.5s
0.1s below mean
Historical mean 6.6s
Water Temperature
–
Not enough comparable data

Chart showing grouped wave observations for Cormorant 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 Cormorant AWS wave buoy

Cormorant AWS (WMO 63112) 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; the parameters available through the international feed depend on the platform's installed sensors.

Metrics are rows; days run left to right.
Cormorant AWS wave buoy daily means Apr 2017Last observation shown
Metric
Mean wave height (ft)749142111888QC rejected91084575469151510101597557
Mean observed period(s)6Reported5Reported6Reported7Reported10Reported7Reported7Reported6Reported6Reported7Reported7Reported8Reported8Reported5Reported6Reported6Reported5Reported5Reported5Reported6Reported8Reported8Reported8Reported7Reported8Reported7Reported6Reported5Reported5Reported6Reported
Mean wave power(kW/m)------------------------------
Mean wind directionWconcentration 96%Wconcentration 89%Sconcentration 99%WSWconcentration 91%NWconcentration 93%Wconcentration 97%WNWconcentration 87%WSWconcentration 99%WSWconcentration 87%NWconcentration 97%WSWconcentration 45%NWconcentration 76%NNEconcentration 79%SSEconcentration 81%NNWconcentration 55%Nconcentration 98%Nconcentration 92%WSWconcentration 49%WSWconcentration 91%Wconcentration 94%NWconcentration 95%NNWconcentration 97%NNWconcentration 64%NNWconcentration 96%Nconcentration 98%NNWconcentration 82%NNEconcentration 94%ENEconcentration 90%SSEconcentration 92%SSEconcentration 99%
Mean wind speed (mph)181327333026152320281713711923159172630231725321918131517
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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