Miami - South Florida

Weather Forecast Office

WFO Miami SWAN Wave Forecast Graphics

EXPERIMENTAL SOUTH FLORIDA GULF STREAM AND WAVE FORECASTS

These forecasts are produced by WFO Miami using the Simulating WAves Nearshore (SWAN) wave model and the Real Time Ocean Forecast System Gulf Stream Forecasts. You may view more information about SWAN and output from other Southern Region coastal offices at the Southern Region SWAN page.

NEW: The SWAN has now been officially documented as experimental. Please read the Product Description Document and complete the survey for this product.

Note: The SWAN output is used as guidance to produce WFO Miami marine forecast. It is only experimental and it may differ from the official forecast. For the official marine forecast graphics go to : WFO MIA Official Marine Forecast Graphics.

SWAN accounts for the following physics:

Wave propagation in time and space, shoaling, refraction due to current and depth, frequency shifting due to currents and non-stationary depth.
Wave generation by wind.
Three- and four-wave interactions.
Whitecapping, bottom friction and depth-induced breaking.
Dissipation.
Wave-induced set-up.
Propagation from laboratory up to global scales.
Transmission through and reflection (specular and diffuse) against obstacles.
Diffraction.

In here you will see 3-hourly forecast outputs for significant wave height, peak wave direction, peak wave period, and significant swell height (heights in feet and periods in seconds). Additionally, individual wave system heights, periods, and directions contributing to the significant wave heights are provided further below as well as 1 dimensional spectral plots for select points. In addition you will see the wind speed and direction used as input for the model. Our local version of SWAN also uses input from WAVEWATCH III for boundary conditions.

NOTE: Significant Swell Height output from SWAN is the average height of the highest 1/3 of the group of waves with periods of 10 secs or longer.

Loops: Follow this Link

Loops: New Alternate Site Under Construction. Click Over South Florida.

6 Panels | Significant Wave Heights and Peak Direction | Peak Period and Direction

Spectral Plots for the Following Locations: Buoy 41114, Jupiter, Gulf Stream, Deerfield Beach, and North Miami Beach

Gerling Hanson Plots for*: Buoy 41114, Jupiter, Gulf Stream, Deerfield Beach, and North Miami Beach

*For an Explanation of the Gerling Hanson Plots See this: Document, Multimedia. Courtesy of Forecast Office in Eureka California.


12 Hour Forecast	15 Hour Forecast	18 Hour Forecast	21 Hour Forecast	24 Hour Forecast

27 Hour Forecast	30 Hour Forecast	33 Hour Forecast	36 Hour Forecast	39 Hour Forecast

42 Hour Forecast	45 Hour Forecast	48 Hour Forecast	51 Hour Forecast	54 Hour Forecast

57 hour Forecast	60 Hour Forecast	63 Hour Forecast	66 Hour Forecast	69 Hour Forecast


72 Hour Forecast	75 Hour Forecast	78 Hour Forecast	81 Hour Forecast	84 Hour Forecast

87 Hour Forecast	90 Hour Forecast

SWAN SIGNIFICANT WAVE HEIGHT (FT)

THIS IS THE SWAN MODEL SIGNIFICANT WAVE HEIGHT OUTPUT BASED ON THE INPUT FORECAST SURFACE WINDS. SEAS ARE GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.


12 Hour Forecast	15 Hour Forecast	18 Hour Forecast	21 Hour Forecast	24 Hour Forecast

27 Hour Forecast	30 Hour Forecast	33 Hour Forecast	36 Hour Forecast	39 Hour Forecast

42 Hour Forecast	45 Hour Forecast	48 Hour Forecast	51 Hour Forecast	54 Hour Forecast

57 Hour Forecast	60 Hour Forecast	63 Hour Forecast	66 Hour Forecast	69 Hour Forecast


72 Hour Forecast	75 Hour Forecast	78 Hour Forecast	81 Hour Forecast	84 Hour Forecast

87 Hour Forecast	90 Hour Forecast

SWAN PEAK WAVE PERIOD (IN SECONDS) AND DIRECTION


12 Hour Forecast	15 Hour Forecast	18 Hour Forecast	21 Hour Forecast	24 Hour Forecast

27 Hour Forecast	30 Hour Forecast	33 Hour Forecast	36 Hour Forecast	39 Hour Forecast

42 Hour Forecast	45 Hour Forecast	48 Hour Forecast	51 Hour Forecast	54 Hour Forecast

57 Hour Forecast	60 Hour Forecast	63 Hour Forecast	66 Hour Forecast	69 Hour Forecast


72 Hour Forecast	75 Hour Forecast	78 Hour Forecast	81 Hour Forecast	84 Hour Forecast

87 Hour Forecast	90 Hour Forecast

1-Dimensional Spectral Output for Buoy 41114 (Plots show lat/lon)


12 Hour Forecast	15 Hour Forecast	18 Hour Forecast	21 Hour Forecast	24 Hour Forecast

27 Hour Forecast	30 Hour Forecast	33 Hour Forecast	36 Hour Forecast	39 Hour Forecast

42 Hour Forecast	45 Hour Forecast	48 Hour Forecast	51 Hour Forecast	54 Hour Forecast

57 Hour Forecast	60 Hour Forecast	63 Hour Forecast	66 Hour Forecast	69 Hour Forecast


72 Hour Forecast	75 Hour Forecast	78 Hour Forecast	81 Hour Forecast	84 Hour Forecast

87 Hour Forecast	90 Hour Forecast

1-Dimensional Spectral Output for Jupiter (Plots show lat/lon)


12 Hour Forecast	15 Hour Forecast	18 Hour Forecast	21 Hour Forecast	24 Hour Forecast

27 Hour Forecast	30 Hour Forecast	33 Hour Forecast	36 Hour Forecast	39 Hour Forecast

42 Hour Forecast	45 Hour Forecast	48 Hour Forecast	51 Hour Forecast	54 Hour Forecast

57 Hour Forecast	60 Hour Forecast	63 Hour Forecast	66 Hour Forecast	69 Hour Forecast


72 Hour Forecast	75 Hour Forecast	78 Hour Forecast	81 Hour Forecast	84 Hour Forecast

87 Hour Forecast	90 Hour Forecast

1-Dimensional Spectral Output for Gulf Stream (Plots show lat/lon)


12 Hour Forecast	15 Hour Forecast	18 Hour Forecast	21 Hour Forecast	24 Hour Forecast

27 Hour Forecast	30 Hour Forecast	33 Hour Forecast	36 Hour Forecast	39 Hour Forecast

42 Hour Forecast	45 Hour Forecast	48 Hour Forecast	51 Hour Forecast	54 Hour Forecast

57 Hour Forecast	60 Hour Forecast	63 Hour Forecast	66 Hour Forecast	69 Hour Forecast


72 Hour Forecast	75 Hour Forecast	78 Hour Forecast	81 Hour Forecast	84 Hour Forecast

87 Hour Forecast	90 Hour Forecast

1-Dimensional Spectral Output for Deerfield Beach (Plots show lat/lon)


12 Hour Forecast	15 Hour Forecast	18 Hour Forecast	21 Hour Forecast	24 Hour Forecast

27 Hour Forecast	30 Hour Forecast	33 Hour Forecast	36 Hour Forecast	39 Hour Forecast

42 Hour Forecast	45 Hour Forecast	48 Hour Forecast	51 Hour Forecast	54 Hour Forecast

57 Hour Forecast	60 Hour Forecast	63 Hour Forecast	66 Hour Forecast	69 Hour Forecast


72 Hour Forecast	75 Hour Forecast	78 Hour Forecast	81 Hour Forecast	84 Hour Forecast

87 Hour Forecast	90 Hour Forecast

1-Dimensional Spectral Output for North Miami Beach (Plots show lat/lon)


12 Hour Forecast	15 Hour Forecast	18 Hour Forecast	21 Hour Forecast	24 Hour Forecast

27 Hour Forecast	30 Hour Forecast	33 Hour Forecast	36 Hour Forecast	39 Hour Forecast

42 Hour Forecast	45 Hour Forecast	48 Hour Forecast	51 Hour Forecast	54 Hour Forecast

57 Hour Forecast	60 Hour Forecast	63 Hour Forecast	66 Hour Forecast	69 Hour Forecast


72 Hour Forecast	75 Hour Forecast	78 Hour Forecast	81 Hour Forecast	84 Hour Forecast

87 Hour Forecast	90 Hour Forecast

At the National Weather Service Office in Miami we strive to provide you with the best marine forecast possible in spite the absence of marine observations across our coastal waters, aside from an occasional ship report. Hence, your feedback and reports are of most importance to us. Your reports, comments and observations are greatly appreciated. The information you provide helps the National Weather Service provide better service to all our marine customers. You can contact our webmaster or send your comments to:

sr-mfl.marine@noaa.gov