Station 41009 (LLNR 840) - CANAVERAL 20 NM East of Cape Canaveral, FL Image indicating link to RSS feed of recent meteorological observations for station 41009


Conditions at 41009 as of
(11:20 am EDT)
1520 GMT on 07/14/2026:
     

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):SSW ( 210 deg true )
5-day plot - Wind Speed Wind Speed (WSPD): 9.7 kts
5-day plot - Wind Gust Wind Gust (GST): 11.7 kts
5-day plot - Wave Height Wave Height (WVHT): 2.0 ft
5-day plot - Dominant Wave Period Dominant Wave Period (DPD): 8 sec
5-day plot - Average Wave Period Average Period (APD): 5.6 sec
5-day plot - Mean Wave Direction Mean Wave Direction (MWD): E ( 81 deg true )
5-day plot - Atmospheric Pressure Atmospheric Pressure (PRES):30.14 in
5-day plot - Air Temperature Air Temperature (ATMP): 80.4 °F
5-day plot - Dew Point Dew Point (DEWP): 76.3 °F
5-day plot - Heat Index Heat Index (HEAT): 86.4 °F
5-day plot - Wind Speed at 10 Meters Wind Speed at 10 meters (WSPD10M): 9.7 kts
5-day plot - Wind Speed at 20 Meters Wind Speed at 20 meters (WSPD20M): 11.7 kts
5-day plot -  Wind Speed, Wind Gust and Atmospheric Pressure Combined plot of Wind Speed, Gust, and Air Pressure
Supplemental Measurements
Lowest 1-minute Pressure
Time (EDT)Pressure
11:20 am30.13 in
Highest 1-minute Wind Speed
Time (EDT)5-day plot - 1-Minute Wind Speed WSPD 5-day plot - 1-Minute Wind Direction WDIR
11:11 am 9.7 ktsSSW ( 210 deg true )
Previous observations
TIME
(EDT)
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
2026-07-14 11:10 amSSW 9.7 9.7 2.0-5.6 E30.14- 80.6- 76.6---
2026-07-14 11:00 amSSW 9.7 11.7----30.13+0.02 80.6- 76.8---
2026-07-14 10:50 amSSW 9.7 11.7 2.0 96.0ENE30.13- 81.0- 77.0---
2026-07-14 10:40 am SW 7.8 9.7----30.13- 80.8- 76.6---
2026-07-14 10:30 amSSW 7.8 9.7----30.13- 80.8- 77.0---
2026-07-14 10:20 amSSW 9.7 11.7 2.0 96.1 E30.13- 81.1- 76.8---
2026-07-14 10:10 amSSW 11.7 13.6----30.13- 81.1- 75.4---
2026-07-14 10:00 am SW 9.7 11.7----30.13+0.03 81.1- 74.8---
2026-07-14 09:50 am SW 9.7 9.7 1.6 85.8 E30.14- 81.1- 74.7---
2026-07-14 09:40 am SW 9.7 11.7 1.6-5.8 E30.13- 81.1- 74.3---
2026-07-14 09:30 am SW 7.8 9.7----30.13- 81.0- 73.6---
2026-07-14 09:20 am SW 7.8 9.7 2.0 106.0 E30.13- 81.1- 74.1---
2026-07-14 09:10 am SW 7.8 9.7 2.0-6.0 E30.13- 81.1- 74.1---
2026-07-14 09:00 amWSW 7.8 9.7----30.13+0.04 81.9- 74.7---
2026-07-14 08:50 amWSW 7.8 9.7 2.0 95.8ESE30.12- 82.2- 73.4---
2026-07-14 08:40 am W 7.8 7.8----30.12- 82.2- 73.4---
2026-07-14 08:30 am W 7.8 7.8----30.12- 82.2- 73.2---
2026-07-14 08:20 am W 5.8 7.8 2.0 95.7 E30.11- 81.9- 73.0---
2026-07-14 08:10 am W 7.8 7.8 2.0-5.7 E30.11- 81.5- 73.0---
2026-07-14 08:00 am W 5.8 7.8----30.11+0.03 81.3- 73.2---
2026-07-14 07:50 am W 5.8 7.8 1.6 84.9ENE30.11- 81.3- 73.4---
2026-07-14 07:40 amWSW 5.8 7.8----30.10- 81.1- 73.0---
2026-07-14 07:30 am W 5.8 7.8----30.10- 81.0- 73.4---
2026-07-14 07:20 am W 5.8 7.8 1.6 105.0 E30.10- 80.8- 73.8---
2026-07-14 07:10 am W 7.8 7.8 1.6-5.0 E30.10- 80.6- 73.9---
2026-07-14 07:00 am W 7.8 7.8----30.10+0.00 80.4- 74.3---
2026-07-14 06:50 am W 5.8 7.8 1.6 84.6 E30.10- 80.4- 74.8---
2026-07-14 06:40 am W 5.8 7.8----30.10- 80.2- 74.8---
2026-07-14 06:30 am W 5.8 7.8----30.10- 80.1- 75.0---
2026-07-14 06:20 am W 7.8 7.8 1.6 85.2 E30.09- 80.1- 75.4---
2026-07-14 06:10 am W 7.8 7.8 1.6-5.2 E30.09- 80.1- 75.4---
2026-07-14 06:00 am W 5.8 7.8----30.09-0.02 80.1- 75.4---
2026-07-14 05:50 amWSW 5.8 7.8 1.6 94.5 E30.09- 79.9- 74.8---
2026-07-14 05:40 amWSW 5.8 7.8----30.08- 79.7- 74.8---
2026-07-14 05:30 am SW 7.8 9.7----30.08- 80.1- 76.3---
2026-07-14 05:20 am SW 7.8 9.7 1.6 84.6 E30.08- 80.2- 76.5---
2026-07-14 05:10 am SW 7.8 9.7----30.08- 80.4- 76.3---
2026-07-14 05:00 am SW 7.8 7.8----30.09-0.05 80.2- 75.7---
2026-07-14 04:50 amSSW 7.8 9.7 1.6 94.3 E30.09- 80.2- 75.7---
2026-07-14 04:40 am SW 5.8 7.8----30.08- 80.1- 75.7---
2026-07-14 04:30 amSSW 7.8 9.7----30.09- 80.1- 76.3---
2026-07-14 04:20 am SW 5.8 7.8 2.0 104.3 E30.09- 79.9- 76.1---
2026-07-14 04:10 am SW 5.8 7.8----30.09- 79.7- 76.1---
2026-07-14 04:00 am SW 7.8 9.7----30.11-0.06 79.9- 76.5---
2026-07-14 03:50 am SW 7.8 9.7 2.0 94.0 E30.10- 79.7- 75.7---
2026-07-14 03:40 amSSW 7.8 9.7----30.10- 79.9- 76.1---
2026-07-14 03:30 amSSW 7.8 9.7----30.10- 80.1- 76.3---
2026-07-14 03:20 amSSW 9.7 9.7 2.0 94.0ESE30.11- 80.1- 76.3---
2026-07-14 03:10 amSSW 9.7 11.7----30.11- 80.2- 76.3---
2026-07-14 03:00 amSSW 9.7 11.7----30.11-0.03 80.2- 75.9---
2026-07-14 02:50 amSSW 9.7 11.7 2.0-4.1 E30.13- 80.2- 75.6---
2026-07-14 02:40 am SW 7.8 9.7----30.12- 80.2- 75.4---
2026-07-14 02:30 am SW 9.7 11.7----30.13- 80.4- 75.6---
2026-07-14 02:20 am SW 9.7 11.7 2.0 84.0 E30.14- 80.2- 75.6---
2026-07-14 02:10 am SW 9.7 11.7----30.14- 80.4- 75.9---
2026-07-14 02:00 amSSW 9.7 9.7----30.14+0.00 80.4- 75.4---
2026-07-14 01:50 amSSW 7.8 9.7 2.0 94.0 E30.14- 80.4- 75.2---
2026-07-14 01:40 amSSW 7.8 9.7----30.14- 80.2- 74.8---
2026-07-14 01:30 amSSW 7.8 9.7----30.14- 80.2- 75.0---
2026-07-14 01:20 amSSW 9.7 11.7 2.0 103.8 E30.14- 80.2- 75.4---
2026-07-14 01:10 amSSW 9.7 11.7----30.15- 80.1- 75.2---
2026-07-14 01:00 amSSW 11.7 13.6----30.15+0.01 80.1- 75.4---
2026-07-14 12:50 amSSW 11.7 13.6 2.0 104.0 E30.15- 80.1- 75.6---
2026-07-14 12:40 amSSW 9.7 13.6----30.15- 79.9- 75.4---
2026-07-14 12:30 amSSW 11.7 13.6----30.15- 79.9- 75.6---
2026-07-14 12:20 amSSW 9.7 11.7 2.0 83.9ESE30.15- 79.7- 75.6---
2026-07-14 12:10 amSSW 9.7 11.7 2.0-3.9ESE30.15- 79.7- 75.4---
2026-07-14 12:00 amSSW 9.7 11.7----30.14+0.02 79.5- 75.4---
2026-07-13 11:50 pmSSW 9.7 13.6 2.0 94.0 E30.14- 79.5- 75.6---
2026-07-13 11:40 pmSSW 7.8 9.7----30.14- 79.2- 75.2---
2026-07-13 11:30 pmSSW 9.7 11.7----30.13- 79.0- 75.4---
2026-07-13 11:20 pmSSW 11.7 13.6 2.0 94.3ESE30.14- 79.0- 75.6---
2026-07-13 11:10 pm SW 9.7 13.6 2.0-4.3ESE30.13- 79.3- 75.2---
2026-07-13 11:00 pm SW 9.7 11.7----30.13+0.01 79.5- 74.8---
2026-07-13 10:50 pm SW 11.7 13.6 2.0 93.9 E30.14- 79.7- 74.1---
2026-07-13 10:40 pmWSW 11.7 13.6 2.0-3.9 E30.14- 79.5- 72.1---
2026-07-13 10:30 pm SW 13.6 17.5----30.14- 80.6- 72.5---
2026-07-13 10:20 pmWSW 13.6 17.5 2.3 44.2 NW30.14- 81.9- 69.8---
2026-07-13 10:10 pm W 13.6 15.5 2.3-4.2 NW30.14- 82.4- 69.1---
2026-07-13 10:00 pm W 11.7 15.5----30.14+0.01 82.4- 69.1---
2026-07-13 09:50 pmWNW 9.7 11.7 2.6 54.2 NW30.12- 82.2- 69.4---
2026-07-13 09:40 pm W 9.7 11.7 2.6-4.2 NW30.12- 82.0- 68.7---
2026-07-13 09:30 pm W 9.7 11.7----30.13- 81.5- 69.1---
2026-07-13 09:20 pm W 9.7 11.7 3.0 54.2 NW30.13- 81.0- 69.3---
2026-07-13 09:10 pmWNW 9.7 13.6 3.0-4.2 NW30.12- 80.6- 68.2---
2026-07-13 09:00 pmWNW 9.7 13.6----30.12+0.00 80.2- 68.5---
2026-07-13 08:50 pmWNW 7.8 11.7 3.3 54.2 NW30.11- 79.7- 68.4---
2026-07-13 08:40 pm NW 9.7 9.7----30.11- 79.2- 68.0---
2026-07-13 08:30 pm NW 9.7 11.7----30.10- 79.0- 68.0---
2026-07-13 08:20 pmNNW 11.7 13.6 3.3 54.1 NW30.10- 78.8- 68.4---
2026-07-13 08:10 pm NW 11.7 13.6 3.3-4.1 NW30.11- 78.6- 69.1---
2026-07-13 08:00 pm NW 11.7 15.5----30.12+0.03 78.4- 71.6---
2026-07-13 07:50 pm NW 13.6 17.5 3.6 54.1 NW30.12- 78.8- 72.7---
2026-07-13 07:40 pm NW 13.6 17.5 3.6-4.1 NW30.12- 78.4- 72.5---
2026-07-13 07:10 pm NW 19.4 23.3 3.6-3.9 NW30.11- 75.4- 74.8---
2026-07-13 07:00 pm NW 21.4 27.2----30.12+0.02 75.4- 75.4---
2026-07-13 06:50 pm NW 21.4 27.2 3.0 43.7 NW30.13- 75.2- 75.2---
2026-07-13 06:40 pmWNW 23.3 29.1 3.0-3.7 NW30.14- 75.2-----
2026-07-13 06:30 pmWNW 27.2 33.0----30.14- 74.7- 74.7---
2026-07-13 06:20 pmWNW 31.1 35.0 1.6 113.9 E30.14- 76.5- 75.0---
2026-07-13 06:10 pmWNW 29.1 38.9 1.6-3.9 E30.14- 78.4- 73.9---
2026-07-13 06:00 pm N 9.7 29.1----30.13+0.00 83.7- 76.3---
2026-07-13 05:50 pm NE 3.9 3.9 1.6 87.0 E30.09- 83.8- 76.3---
2026-07-13 05:40 pm E 1.9 3.9----30.10- 83.7- 75.9---
2026-07-13 05:30 pm E 1.9 3.9----30.09- 83.8- 75.7---
2026-07-13 05:20 pmESE 1.9 3.9 1.3 106.6ENE30.09- 83.7- 75.0---
2026-07-13 05:10 pmESE 1.9 3.9 1.3-6.6ENE30.09- 83.8- 75.2---
2026-07-13 05:00 pm SE 3.9 3.9----30.09-0.04 83.8- 74.5---
2026-07-13 04:50 pmSSE 3.9 5.8 1.3 96.3ENE30.09- 83.7- 74.1---
2026-07-13 04:40 pmSSE 3.9 5.8----30.09- 83.3- 74.5---
2026-07-13 04:30 pm SE 3.9 5.8----30.09- 83.3- 75.2---
2026-07-13 04:20 pm SE 3.9 3.9 1.3 95.9ENE30.09- 83.1- 75.0---
2026-07-13 04:10 pmSSE 3.9 3.9 1.3-5.9ENE30.10- 83.1- 75.0---
2026-07-13 04:00 pm S 3.9 3.9----30.10-0.05 82.8- 74.8---
2026-07-13 03:50 pm S 3.9 5.8 1.6 85.6 E30.11- 82.4- 75.0---
2026-07-13 03:40 pm S 3.9 5.8----30.11- 82.2- 75.7---
2026-07-13 03:30 pm S 3.9 5.8----30.11- 82.2- 75.9---
2026-07-13 03:20 pm S 3.9 5.8 1.3-5.8ENE30.11- 82.2- 75.9---
2026-07-13 03:10 pm S 3.9 5.8 1.3-5.8ENE30.11- 82.0- 75.7---
2026-07-13 03:00 pm S 3.9 3.9----30.11-0.05 81.9- 75.7---
2026-07-13 02:50 pm S 3.9 5.8 1.6-5.9 E30.12- 81.9- 76.1---
2026-07-13 02:40 pm--- 1.6 85.9 E--------
2026-07-13 02:30 pm S 3.9 3.9----30.12- 81.7- 75.9---
2026-07-13 02:20 pm S 3.9 5.8 1.3 85.2ENE30.13- 81.7- 75.9---
2026-07-13 02:10 pm S 3.9 3.9----30.13- 81.7- 76.1---
2026-07-13 02:00 pm S 3.9 3.9----30.13-0.03 81.5- 75.7---
2026-07-13 01:50 pm S 3.9 3.9 1.6 85.3 E30.13- 81.7- 76.1---
2026-07-13 01:40 pm SW 1.9 3.9----30.14- 81.7- 76.1---
2026-07-13 01:30 pmSSW 1.9 3.9----30.14- 81.7- 76.3---
2026-07-13 01:20 pmSSW 1.9 3.9 1.6 85.6 E30.14- 81.9- 76.3---
2026-07-13 01:10 pm- 0.0 3.9 1.6-5.6 E30.15- 81.7- 76.3---
2026-07-13 01:00 pmWSW 1.9 1.9----30.15+0.00 81.3- 76.3---
2026-07-13 12:50 pm SW 1.9 1.9 1.6 84.9ENE30.15- 81.1- 76.5---
2026-07-13 12:40 pmWSW 1.9 3.9----30.15- 81.0- 76.3---
2026-07-13 12:30 pmWSW 1.9 3.9----30.15- 81.0- 76.6---
2026-07-13 12:20 pmWSW 3.9 3.9 1.6 85.3 E30.16- 80.8- 76.3---
2026-07-13 12:10 pmWSW 3.9 5.8 1.6-5.3 E30.16- 81.0- 76.6---
2026-07-13 12:00 pm W 3.9 5.8----30.16+0.01 80.8- 76.5---
2026-07-13 11:50 am W 5.8 5.8 1.6 85.6ESE30.16- 80.8- 76.5---
2026-07-13 11:40 am W 5.8 7.8----30.16- 80.8- 76.5---
2026-07-13 11:30 am W 5.8 7.8----30.16- 80.6- 76.3---
2026-07-13 11:20 am W 5.8 7.8 1.6 95.3 E30.16- 80.8- 76.5---
2026-07-13 11:10 am W 5.8 7.8 1.6-5.3 E30.16- 80.6- 76.3---
2026-07-13 11:00 am W 5.8 7.8----30.16+0.02 80.6- 76.5---
2026-07-13 10:50 am W 7.8 7.8 1.6 95.1ENE30.16- 80.6- 76.5---

Wave Summary
for 41009 as of (11:10 am EDT)
1510 GMT on 07/14/2026:

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): 2.0 ft
5-day plot - Swell Height Swell Height (SwH): 2.0 ft
5-day plot - Swell Period Swell Period (SwP): 8.3 sec
5-day plot - Swell Direction Swell Direction (SwD): E
5-day plot - Wind Wave Height Wind Wave Height (WWH): 0.7 ft
5-day plot - Wind Wave Period Wind Wave Period (WWP): 2.2 sec
5-day plot - Wind Wave Direction Wind Wave Direction (WWD): S
5-day plot - Average Wave Period Average Wave Period (APD): 5.6 sec
Previous observations
TIME
(EDT)
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
2026-07-14 10:40 am 2.0 1.6 9.1ENE 0.7 4.2 NE N/A 6.0
2026-07-14 10:10 am 2.0 1.6 9.1 E 0.7 5.0 NNE N/A 6.1
2026-07-14 09:40 am 1.6 1.6 8.3 E 0.7 3.1 SSE N/A 5.8
2026-07-14 09:10 am 2.0 1.6 10.0 E 0.7 3.1 SSE N/A 6.0
2026-07-14 08:40 am 2.0 2.0 9.1ESE 0.7 2.9 S N/A 5.8
2026-07-14 08:10 am 2.0 2.0 9.1 E 0.7 3.1 S N/A 5.7
2026-07-14 07:40 am 1.6 1.6 7.7ENE 0.7 2.9 SSE N/A 4.9
2026-07-14 07:10 am 1.6 1.6 10.0 E 0.7 2.6 S N/A 5.0
2026-07-14 06:40 am 1.6 1.6 7.7 E 0.7 2.7 SSW N/A 4.6
2026-07-14 06:10 am 1.6 1.6 8.3 E 0.7 2.7 SSW N/A 5.2
2026-07-14 05:40 am 1.6 1.3 9.1 E 1.0 2.7 SSW N/A 4.5
2026-07-14 05:10 am 1.6 1.3 8.3 E 1.0 2.7 SSW N/A 4.6
2026-07-14 04:40 am 1.6 1.3 9.1 E 1.0 3.0 SSW N/A 4.3
2026-07-14 04:10 am 2.0 1.6 10.0 E 1.3 3.0 SSW N/A 4.3
2026-07-14 03:40 am 2.0 1.6 9.1 E 1.3 3.1 SW N/A 4.0
2026-07-14 03:10 am 2.0 1.3 9.1ESE 1.3 4.3 NNW N/A 4.0
2026-07-14 02:40 am 2.0 1.6 9.1 E 1.3 2.9 SSW N/A 4.1
2026-07-14 02:10 am 2.0 1.6 8.3 E 1.3 2.9 SSW N/A 4.0
2026-07-14 01:40 am 2.0 1.6 9.1 E 1.3 2.9 SSW N/A 4.0
2026-07-14 01:10 am 2.0 1.3 10.0 E 1.3 2.9 SSW N/A 3.8
2026-07-14 12:40 am 2.0 1.3 10.0 E 1.3 3.7 NW N/A 4.0
2026-07-14 12:10 am 2.0 1.3 8.3ESE 1.3 3.6 NW N/A 3.9
2026-07-13 11:40 pm 2.0 1.3 9.1 E 1.3 4.2 NNW N/A 4.0
2026-07-13 11:10 pm 2.0 1.3 9.1ESE 1.6 4.2 NW N/A 4.3
2026-07-13 10:40 pm 2.0 1.0 9.1 E 1.6 4.5 NNW N/A 3.9
2026-07-13 10:10 pm 2.3 1.3 9.1 E 2.0 4.3 NW N/A 4.2
2026-07-13 09:40 pm 2.6 1.6 9.1 E 2.0 4.5 NWVERY_STEEP 4.2
2026-07-13 09:10 pm 3.0 1.3 9.1 E 2.6 4.5 NWVERY_STEEP 4.2
2026-07-13 08:40 pm 3.3 2.3 4.5 NW 2.3 3.4 NWVERY_STEEP 4.2
2026-07-13 08:10 pm 3.3 1.3 9.1 E 3.3 5.0 NWVERY_STEEP 4.1
2026-07-13 07:40 pm 3.6 1.3 10.8 SE 3.6 4.5 NWVERY_STEEP 4.1
2026-07-13 07:10 pm 3.6 1.0 10.0ESE 3.3 4.3 NWVERY_STEEP 3.9
2026-07-13 06:40 pm 3.0 1.0 9.1 E 3.0 3.7 NWVERY_STEEP 3.7
2026-07-13 06:10 pm 1.6 1.3 10.8 E 1.0 2.7 NW N/A 3.9
2026-07-13 05:40 pm 1.6 1.6 8.3 E 0.3 2.4 SSE N/A 7.0
2026-07-13 05:10 pm 1.3 1.3 10.0ENE 0.3 2.2 S N/A 6.6
2026-07-13 04:40 pm 1.3 1.3 9.1ENE 0.3 2.5 S N/A 6.3
2026-07-13 04:10 pm 1.3 1.3 9.1ENE 0.3 2.4 S N/A 5.9
2026-07-13 03:40 pm 1.6 1.3 8.3 E 0.7 2.5 S N/A 5.6
2026-07-13 03:10 pm 1.3 1.3 9.1ENE 0.3 2.6 SSE N/A 5.8
2026-07-13 02:40 pm 1.6 1.6 8.3 E 0.7 2.6 SSE N/A 5.9
2026-07-13 02:10 pm 1.3 1.3 8.3ENE 0.7 2.5 SSE N/A 5.2
2026-07-13 01:40 pm 1.6 1.6 8.3 E 0.7 2.6 S N/A 5.3
2026-07-13 01:10 pm 1.6 1.6 8.3 E 0.7 2.6 SSE N/A 5.6
2026-07-13 12:40 pm 1.6 1.3 8.3ENE 0.7 2.5 SSE N/A 4.9
2026-07-13 12:10 pm 1.6 1.6 8.3 E 0.7 2.6 SSE N/A 5.3
2026-07-13 11:40 am 1.6 1.6 8.3ESE 0.7 2.6 SSE N/A 5.6
2026-07-13 11:10 am 1.6 1.6 9.1 E 0.7 2.7 SSE N/A 5.3

Plot icon Plot of wave energy versus frequency (and period)