Station 51101 (LLNR 28006.3) - NORTHWESTERN HAWAII TWO - 186 NM NW of Kauai Is., HI Image indicating link to RSS feed of recent meteorological observations for station 51101


Conditions at 51101 as of
(7:20 am HAST)
1720 GMT on 06/12/2024:
     

Click on the graph icon in the table below to see a time series plot of the last five days of that observation.

5-day plot - Wind Direction Wind Direction (WDIR):ENE ( 70 deg true )
5-day plot - Wind Speed Wind Speed (WSPD): 13.6 kts
5-day plot - Wind Gust Wind Gust (GST): 17.5 kts
5-day plot - Wave Height Wave Height (WVHT): 6.2 ft
5-day plot - Dominant Wave Period Dominant Wave Period (DPD): 14 sec
5-day plot - Average Wave Period Average Period (APD): 6.3 sec
5-day plot - Mean Wave Direction Mean Wave Direction (MWD): SE ( 137 deg true )
5-day plot - Atmospheric Pressure Atmospheric Pressure (PRES):30.14 in
5-day plot - Air Temperature Air Temperature (ATMP): 76.8 °F
5-day plot - Water Temperature Water Temperature (WTMP): 77.5 °F
5-day plot - Wind Speed at 10 Meters Wind Speed at 10 meters (WSPD10M): 15.5 kts
5-day plot - Wind Speed at 20 Meters Wind Speed at 20 meters (WSPD20M): 15.5 kts
5-day plot -  Wind Speed, Wind Gust and Atmospheric Pressure Combined plot of Wind Speed, Gust, and Air Pressure
Supplemental Measurements
Highest 1-minute Wind Speed
Time (HAST)5-day plot - 1-Minute Wind Speed WSPD 5-day plot - 1-Minute Wind Direction WDIR
7:19 am 15.5 kts-
Previous observations
TIME
(HAST)
5-day plot - Wind Direction
WDIR
 
5-day plot - Wind Speed
WSPD
kts
5-day plot - Wind Gust
GST
kts
5-day plot - Wave Height
WVHT
ft
5-day plot - Dominant Wave Period
DPD
sec
5-day plot - Average Wave Period
APD
sec
5-day plot - Mean Wave Direction
MWD
 
5-day plot - Atmospheric Pressure
PRES
in
5-day plot - Pressure Tendency
PTDY
in
5-day plot - Air Temperature
ATMP
°F
5-day plot - Water Temperature
WTMP
°F
5-day plot - Dew Point
DEWP
°F
5-day plot - Salinity
SAL
psu
5-day plot - Visibility
VIS
nmi
5-day plot - Tide (above MLLW)
TIDE
ft
2024-06-12 07:10 amENE 13.6 15.5 6.2-6.3 SE30.14- 76.6 77.5----
2024-06-12 07:00 amENE 13.6 15.5----30.13+0.02 76.5 77.5----
2024-06-12 06:50 amENE 11.7 15.5 5.6 65.9 E30.13- 76.3 77.5----
2024-06-12 06:40 amENE 13.6 19.4 5.6-5.9 E30.13- 76.6 77.5----
2024-06-12 06:30 amENE 13.6 17.5----30.13- 76.8 77.5----
2024-06-12 06:20 am E 13.6 15.5 5.6 135.8 SE30.13- 76.8 77.5----
2024-06-12 06:10 am E 13.6 15.5 5.6-5.8 SE30.13- 76.8 77.5----
2024-06-12 06:00 am E 13.6 15.5----30.13+0.01 76.8 77.5----
2024-06-12 05:50 am E 13.6 15.5 5.9 105.9 N30.12- 76.8 77.4----
2024-06-12 05:40 am E 13.6 17.5 5.9-5.9 N30.12- 77.0 77.4----
2024-06-12 05:30 am E 13.6 17.5----30.12- 77.0 77.4----
2024-06-12 05:20 am E 13.6 17.5 5.6 65.8 E30.12- 76.6 77.4----
2024-06-12 05:10 am E 13.6 17.5 5.6-5.8 E30.11- 76.6 77.4----
2024-06-12 05:00 am E 15.5 19.4----30.11-0.01 76.6 77.4----
2024-06-12 04:50 am E 15.5 19.4 5.6 115.8NNE30.11- 77.0 77.4----
2024-06-12 04:40 am E 15.5 19.4 5.6-5.8NNE30.11- 76.8 77.4----
2024-06-12 04:30 am E 15.5 19.4----30.11- 76.8 77.2----
2024-06-12 04:20 amENE 13.6 17.5 5.6 125.7ENE30.11- 76.6 77.4----
2024-06-12 04:10 amENE 13.6 17.5 5.6-5.7ENE30.11- 76.3 77.4----
2024-06-12 04:00 am E 11.7 13.6----30.11-0.03 75.9 77.4----
2024-06-12 03:50 am E 11.7 17.5 5.6 145.5SSE30.11- 74.5 77.2----
2024-06-12 03:40 am E 19.4 23.3----30.12- 73.6 77.4----
2024-06-12 03:30 am E 19.4 23.3----30.12- 74.7 77.4----
2024-06-12 03:20 am E 17.5 23.3 5.6 105.6 N30.12- 74.5 77.5----
2024-06-12 03:10 amESE 17.5 25.3 5.6-5.6 N30.11- 74.3 77.5----
2024-06-12 03:00 am E 17.5 23.3----30.12-0.04 76.3 77.5----
2024-06-12 02:50 amENE 15.5 21.4 5.6 86.1 NE30.12- 76.8 77.5----
2024-06-12 02:40 am E 13.6 19.4----30.12- 76.1 77.7----
2024-06-12 02:30 am E 15.5 17.5----30.12- 76.8 77.7----
2024-06-12 02:20 am E 13.6 19.4 5.6 146.1 SE30.12- 76.8 77.7----
2024-06-12 02:10 am E 13.6 21.4 5.6-6.1 SE30.12- 76.5 77.9----
2024-06-12 02:00 amENE 13.6 17.5----30.13-0.04 77.0 77.9----
2024-06-12 01:50 amENE 13.6 15.5 5.2 115.7NNW30.13- 77.4 78.1----
2024-06-12 01:40 am E 11.7 15.5----30.13- 77.4 78.1----
2024-06-12 01:30 am E 13.6 15.5----30.14- 77.4 78.1----
2024-06-12 01:20 am E 13.6 15.5 5.6 115.8NNW30.14- 77.4 78.1----
2024-06-12 01:10 am E 13.6 17.5 5.6-5.8NNW30.14- 77.4 78.1----
2024-06-12 01:00 am E 13.6 17.5----30.14-0.01 77.4 78.1----
2024-06-12 12:50 am E 15.5 17.5 5.2 115.9NNW30.14- 77.4 78.1----
2024-06-12 12:40 am E 13.6 17.5 5.2-5.9NNW30.15- 77.4 78.1----
2024-06-12 12:30 am E 15.5 19.4----30.15- 77.4 78.1----
2024-06-12 12:20 am E 13.6 17.5 5.6 145.8ESE30.15- 77.4 78.1----
2024-06-12 12:10 am E 13.6 19.4 5.6-5.8ESE30.15- 77.4 78.1----
2024-06-12 12:00 am E 13.6 17.5----30.15+0.01 77.2 78.1----
2024-06-11 11:50 pm E 11.7 15.5 5.2 145.9 SE30.16- 77.0 78.1----
2024-06-11 11:40 pm E 13.6 17.5----30.16- 77.5 78.1----
2024-06-11 11:30 pm E 13.6 17.5----30.16- 77.5 77.9----
2024-06-11 11:20 pm E 13.6 17.5 5.6 115.9ENE30.16- 77.5 77.9----
2024-06-11 11:10 pm E 13.6 17.5 5.6-5.9ENE30.16- 77.5 77.9----
2024-06-11 11:00 pm E 15.5 17.5----30.16+0.03 77.4 77.9----
2024-06-11 10:50 pmENE 13.6 17.5 5.6 146.0ESE30.16- 77.4 77.9----
2024-06-11 10:40 pm E 13.6 17.5 5.6-6.0ESE30.16- 77.5 77.9----
2024-06-11 10:30 pm E 13.6 17.5----30.16- 77.5 77.9----
2024-06-11 10:20 pm E 15.5 17.5 5.6 125.9 SE30.16- 77.5 77.9----
2024-06-11 10:10 pm E 13.6 17.5 5.6-5.9 SE30.16- 77.5 77.9----
2024-06-11 10:00 pm E 13.6 17.5----30.16+0.04 77.4 77.9----
2024-06-11 09:50 pm E 13.6 17.5 5.6 125.9ENE30.15- 77.2 77.9----
2024-06-11 09:40 pmENE 13.6 17.5----30.15- 77.2 77.9----
2024-06-11 09:30 pmENE 13.6 15.5----30.15- 77.4 77.9----
2024-06-11 09:20 pmENE 15.5 17.5 5.6 135.9SSE30.15- 77.2 77.9----
2024-06-11 09:10 pmENE 15.5 17.5 5.6-5.9SSE30.14- 77.0 77.9----
2024-06-11 09:00 pmENE 13.6 17.5----30.14+0.03 77.2 77.9----
2024-06-11 08:50 pmENE 15.5 17.5 5.9 136.0 SE30.14- 77.2 77.9----
2024-06-11 08:40 pmENE 13.6 15.5----30.14- 77.2 77.9----
2024-06-11 08:30 pmENE 13.6 15.5----30.14- 77.0 77.9----
2024-06-11 08:20 pmENE 13.6 17.5 5.6 135.9SSE30.14- 76.8 77.9----
2024-06-11 08:10 pmENE 13.6 19.4 5.6-5.9SSE30.14- 76.8 77.9----
2024-06-11 08:00 pmENE 15.5 19.4----30.14+0.02 76.8 77.9----
2024-06-11 07:50 pmENE 15.5 19.4 6.2 146.3SSE30.14- 76.8 77.9----
2024-06-11 07:40 pmENE 15.5 19.4 6.2-6.3SSE30.13- 76.8 77.9----
2024-06-11 07:30 pmENE 15.5 19.4----30.13- 76.8 77.9----
2024-06-11 07:20 pmENE 15.5 17.5 5.6 115.9 N30.13- 76.8-----
2024-06-11 07:10 pmENE 17.5 19.4 5.6-5.9 N30.13- 76.8 77.9----
2024-06-11 07:00 pmENE 15.5 19.4----30.12+0.00 77.0 77.9----
2024-06-11 06:50 pmENE 15.5 19.4 5.6 86.1 E30.12- 77.4 77.9----
2024-06-11 06:40 pmENE 13.6 17.5 5.6-6.1 E30.12- 77.2 78.1----
2024-06-11 06:30 pmENE 15.5 17.5----30.12- 77.4 78.1----
2024-06-11 06:20 pmENE 13.6 17.5 5.6 146.2 SE30.12- 77.4 78.1----
2024-06-11 06:10 pmENE 13.6 17.5 5.6-6.2 SE30.11- 77.4 78.1----
2024-06-11 06:00 pmENE 13.6 17.5----30.11-0.02 77.4 78.1----
2024-06-11 05:50 pmENE 13.6 17.5 5.2 86.3ESE30.11- 77.4 78.1----
2024-06-11 05:40 pmENE 13.6 15.5 5.2-6.3ESE30.11- 77.5 78.1----
2024-06-11 05:30 pmENE 13.6 17.5----30.11- 77.4 78.1----
2024-06-11 05:20 pmENE 13.6 15.5 5.2 146.2SSE30.11- 77.4 78.1----
2024-06-11 05:10 pmENE 11.7 15.5 5.2-6.2SSE30.11- 77.4 78.1----
2024-06-11 05:00 pmENE 11.7 13.6----30.11-0.03 77.2 78.1----
2024-06-11 04:50 pmENE 11.7 13.6 5.6 146.1SSE30.11- 77.0 78.1----
2024-06-11 04:40 pm NE 13.6 15.5 5.6-6.1SSE30.11- 77.0 78.1----
2024-06-11 04:30 pmENE 13.6 17.5----30.11- 77.2 78.1----
2024-06-11 04:20 pmENE 13.6 17.5 5.6 126.1 N30.12- 77.4 78.3----
2024-06-11 04:10 pmENE 13.6 15.5 5.6-6.1 N30.12- 77.2 78.1----
2024-06-11 04:00 pmENE 11.7 15.5----30.12-0.03 77.2 78.1----
2024-06-11 03:50 pmENE 13.6 15.5 5.9 116.4NNW30.12- 77.0 78.1----
2024-06-11 03:40 pmENE 13.6 15.5 5.9-6.4NNW30.13- 77.4 78.1----
2024-06-11 03:30 pmENE 13.6 15.5----30.13- 77.2 78.1----
2024-06-11 03:20 pmENE 11.7 15.5 5.9 116.1 NW30.13- 77.0 78.1----
2024-06-11 03:10 pmENE 13.6 15.5 5.9-6.1 NW30.13- 76.8 78.1----
2024-06-11 03:00 pmENE 11.7 15.5----30.13-0.03 77.0 78.1----
2024-06-11 02:50 pmENE 11.7 15.5 5.9 146.3SSE30.13- 77.4 78.1----
2024-06-11 02:40 pmENE 11.7 13.6 5.9-6.3SSE30.13- 77.4 78.1----
2024-06-11 02:30 pmENE 11.7 13.6----30.14- 77.4 78.1----
2024-06-11 02:20 pmENE 11.7 13.6 6.2 146.5 S30.14- 77.4 78.1----
2024-06-11 02:10 pmENE 11.7 13.6 6.2-6.5 S30.14- 77.4 78.1----
2024-06-11 02:00 pmENE 11.7 15.5----30.14-0.04 77.2 77.9----
2024-06-11 01:50 pmENE 11.7 13.6 5.6 136.3 S30.14- 77.0 77.9----
2024-06-11 01:40 pmENE 13.6 15.5----30.15- 76.6 77.9----
2024-06-11 01:20 pmENE 11.7 13.6 5.9 146.7 S30.15- 77.5 77.9----
2024-06-11 01:10 pmENE 9.7 13.6 5.9-6.7 S30.15- 77.7 77.9----
2024-06-11 01:00 pmENE 11.7 13.6----30.16-0.02 77.5 77.9----
2024-06-11 12:50 pmENE 11.7 13.6 6.2 86.5NNE30.16- 77.5 77.9----
2024-06-11 12:40 pmENE 11.7 13.6----30.16- 77.5 77.7----
2024-06-11 12:30 pmENE 11.7 13.6----30.16- 77.5 77.9----
2024-06-11 12:20 pmENE 11.7 13.6 5.6 146.3SSE30.16- 77.4 77.7----
2024-06-11 12:10 pm E 11.7 13.6 5.6-6.3SSE30.16- 77.4 77.7----
2024-06-11 12:00 pm E 11.7 13.6----30.16-0.01 77.4 77.7----
2024-06-11 11:50 am E 11.7 13.6 5.9 86.3NNE30.17- 77.2 77.7----
2024-06-11 11:40 am E 11.7 13.6----30.17- 77.4 77.7----
2024-06-11 11:30 am E 9.7 13.6----30.17- 77.4 77.7----
2024-06-11 11:20 am E 11.7 13.6 5.9 86.4 NE30.18- 77.4 77.7----
2024-06-11 11:10 amENE 9.7 13.6 5.9-6.4 NE30.18- 77.4 77.7----
2024-06-11 11:00 am E 9.7 13.6----30.18+0.01 77.4 77.5----
2024-06-11 10:50 am E 11.7 13.6 5.6 96.2NNW30.18- 77.2 77.5----
2024-06-11 10:40 am E 9.7 11.7 5.6-6.2NNW30.18- 77.2 77.5----
2024-06-11 10:30 am E 9.7 11.7----30.18- 77.2 77.5----
2024-06-11 10:20 amENE 9.7 11.7 5.6 86.1 NE30.18- 77.2 77.5----
2024-06-11 10:10 am E 9.7 11.7 5.6-6.1 NE30.18- 77.2 77.5----
2024-06-11 10:00 am E 9.7 11.7----30.18+0.02 77.2 77.5----
2024-06-11 09:50 am E 9.7 11.7 6.2 126.5WNW30.18- 77.2 77.5----
2024-06-11 09:40 am E 9.7 11.7----30.18- 77.2 77.5----
2024-06-11 09:30 am E 9.7 13.6----30.17- 77.2 77.5----
2024-06-11 09:20 am E 9.7 13.6 6.2 86.3 N30.17- 77.2 77.4----
2024-06-11 09:10 am E 11.7 13.6 6.2-6.3 N30.17- 77.2 77.4----
2024-06-11 09:00 am E 11.7 13.6----30.17+0.03 77.2 77.4----
2024-06-11 08:50 am E 11.7 13.6 5.6 96.1 NW30.17- 77.2 77.4----
2024-06-11 08:40 am E 11.7 13.6 5.6-6.1 NW30.17- 77.4 77.4----
2024-06-11 08:30 am E 11.7 15.5----30.17- 77.2 77.4----
2024-06-11 08:20 am E 11.7 15.5 5.9 96.1NNE30.17- 77.2 77.4----
2024-06-11 08:10 am E 11.7 15.5 5.9-6.1NNE30.17- 77.2 77.4----
2024-06-11 08:00 am E 13.6 15.5----30.17+0.04 77.2 77.4----
2024-06-11 07:50 am E 11.7 15.5 6.2 156.3SSE30.16- 77.2 77.4----
2024-06-11 07:40 am E 11.7 15.5----30.16- 77.2 77.4----
2024-06-11 07:30 am E 13.6 15.5----30.16- 77.2 77.4----
2024-06-11 07:20 am E 13.6 15.5 5.9 136.1 S30.16- 77.2 77.4----
2024-06-11 07:10 am E 13.6 17.5 5.9-6.1 S30.16- 77.0 77.4----
2024-06-11 07:00 am E 13.6 17.5----30.16+0.01 77.0 77.4----
2024-06-11 06:50 am E 13.6 15.5 5.2 95.8 N30.15- 77.0-----

Detailed Wave Summary
for 51101 as of (7:10 am HAST)
1710 GMT on 06/12/2024:

These wave data are displayed in rounded times.

     

Click on the graph icon in the table below to see a time series plot of the last five days of that observation.

5-day plot - Significant Wave Height Significant Wave Height (WVHT): 6.2 ft
5-day plot - Swell Height Swell Height (SwH): 4.9 ft
5-day plot - Swell Period Swell Period (SwP): 13.8 sec
5-day plot - Swell Direction Swell Direction (SwD): SE
5-day plot - Wind Wave Height Wind Wave Height (WWH): 3.9 ft
5-day plot - Wind Wave Period Wind Wave Period (WWP): 6.2 sec
5-day plot - Wind Wave Direction Wind Wave Direction (WWD): E
5-day plot - Wave Steepness Wave Steepness (STEEPNESS): SWELL
5-day plot - Average Wave Period Average Wave Period (APD): 6.3 sec
Previous observations
TIME
(HAST)
5-day plot - Wave Height
WVHT
ft
5-day plot - Swell Height
SwH
ft
5-day plot - Swell Period
SwP
sec
5-day plot - Swell Direction
SwD
 
5-day plot - Wind Wave Height
WWH
ft
5-day plot - Wind Wave Period
WWP
sec
5-day plot - Wind Wave Direction
WWD
 
5-day plot - Wave Steepness
STEEPNESS
 
5-day plot - Average Wave Period
APD
sec
2024-06-12 06:40 am 5.6 3.9 10.0 N 4.3 5.9 EVERY_STEEP 5.9
2024-06-12 06:10 am 5.6 4.3 12.9 SE 3.9 6.2 E SWELL 5.8
2024-06-12 05:40 am 5.9 4.3 10.0 N 3.9 5.3 E SWELL 5.9
2024-06-12 05:10 am 5.6 3.9 7.1 E 3.9 5.9 EVERY_STEEP 5.8
2024-06-12 04:40 am 5.6 3.6 10.8NNE 4.3 7.1 ESE AVERAGE 5.8
2024-06-12 04:10 am 5.6 4.3 12.1ENE 3.6 6.2 E SWELL 5.7
2024-06-12 03:40 am 5.6 3.9 13.8SSE 3.9 6.2 E SWELL 5.5
2024-06-12 03:10 am 5.6 4.3 10.0 N 3.9 6.7 E SWELL 5.6
2024-06-12 02:40 am 5.6 4.6 8.3 NE 3.3 6.7 E AVERAGE 6.1
2024-06-12 02:10 am 5.6 4.6 13.8 SE 3.0 5.6 ESE SWELL 6.1
2024-06-12 01:40 am 5.2 3.9 10.8NNW 3.0 5.9 E SWELL 5.7
2024-06-12 01:10 am 5.6 4.3 10.8NNW 3.3 6.2 E SWELL 5.8
2024-06-12 12:40 am 5.2 4.3 10.8NNW 3.0 5.9 E SWELL 5.9
2024-06-12 12:10 am 5.6 4.3 13.8ESE 3.3 6.2 E SWELL 5.8
2024-06-11 11:40 pm 5.2 3.9 13.8 SE 3.3 6.7 NE SWELL 5.9
2024-06-11 11:10 pm 5.6 3.9 11.4ENE 3.6 6.2 E SWELL 5.9
2024-06-11 10:40 pm 5.6 4.3 13.8ESE 3.6 6.7 E SWELL 6.0
2024-06-11 10:10 pm 5.6 4.3 12.1 SE 3.6 6.2 E SWELL 5.9
2024-06-11 09:40 pm 5.6 4.3 12.1ENE 3.3 5.3 E SWELL 5.9
2024-06-11 09:10 pm 5.6 4.3 12.9SSE 3.6 6.7 E SWELL 5.9
2024-06-11 08:40 pm 5.9 4.6 12.9 SE 3.6 6.2 E SWELL 6.0
2024-06-11 08:10 pm 5.6 4.3 12.9SSE 3.6 6.7 E SWELL 5.9
2024-06-11 07:40 pm 6.2 5.2 13.8SSE 3.3 5.6 ESE SWELL 6.3
2024-06-11 07:10 pm 5.6 4.6 11.4 N 3.6 6.2 ENE SWELL 5.9
2024-06-11 06:40 pm 5.6 4.6 7.7 E 3.6 5.9 E STEEP 6.1
2024-06-11 06:10 pm 5.6 4.6 13.8 SE 3.3 5.9 ESE SWELL 6.2
2024-06-11 05:40 pm 5.2 4.3 7.7ESE 3.0 4.8 ESE AVERAGE 6.3
2024-06-11 05:10 pm 5.2 4.6 13.8SSE 3.0 5.6 ESE SWELL 6.2
2024-06-11 04:40 pm 5.6 4.3 13.8SSE 3.3 5.6 ESE SWELL 6.1
2024-06-11 04:10 pm 5.6 4.6 12.1 N 3.3 5.6 E SWELL 6.1
2024-06-11 03:40 pm 5.9 4.9 10.8NNW 3.3 6.2 E SWELL 6.4
2024-06-11 03:10 pm 5.9 4.6 11.4 NW 3.3 5.9 ESE SWELL 6.1
2024-06-11 02:40 pm 5.9 5.2 13.8SSE 3.0 5.6 ESE SWELL 6.3
2024-06-11 02:10 pm 6.2 5.6 13.8 S 3.0 5.3 E SWELL 6.5
2024-06-11 01:40 pm 5.6 4.6 12.9 S 3.3 4.5 ESE SWELL 6.3
2024-06-11 01:10 pm 5.9 5.6 13.8 S 2.3 3.6 SE SWELL 6.7
2024-06-11 12:40 pm 6.2 5.9 8.3NNE 2.6 5.3 ESE AVERAGE 6.5
2024-06-11 12:10 pm 5.6 5.2 13.8SSE 2.6 5.3 ESE SWELL 6.3
2024-06-11 11:40 am 5.9 5.2 8.3NNE 2.6 4.5 E AVERAGE 6.3
2024-06-11 11:10 am 5.9 5.6 8.3 NE 2.3 3.6 ESE AVERAGE 6.4
2024-06-11 10:40 am 5.6 5.2 9.1NNW 2.3 3.8 ESE AVERAGE 6.2
2024-06-11 10:10 am 5.6 5.2 7.7 NE 2.3 4.3 E STEEP 6.1
2024-06-11 09:40 am 6.2 5.9 12.1WNW 2.0 4.5 ESE SWELL 6.5
2024-06-11 09:10 am 6.2 5.6 8.3 N 3.0 5.0 E AVERAGE 6.3
2024-06-11 08:40 am 5.6 4.9 9.1 NW 2.6 5.3 ESE AVERAGE 6.1
2024-06-11 08:10 am 5.9 4.9 9.1NNE 3.3 5.0 ESE AVERAGE 6.1
2024-06-11 07:40 am 6.2 5.2 14.8SSE 3.3 4.5 ESE SWELL 6.3
2024-06-11 07:10 am 5.9 4.6 12.9 S 3.6 5.9 ESE SWELL 6.1

Plot of wave energy versus frequency (and period)