Marine Weather Net

Volusia-Brevard County Line to Sebastian Inlet out 20 NM Marine Forecast


15 - 20


15 - 20


5 - 10


10 - 15

The Marine Weather Forecast In Detail:
AMZ552 Forecast Issued: 403 AM EST Sat Jan 16 2021

Today...West Winds 15 To 20 Knots. Seas 3 To 4 Feet With A Dominant Period 4 Seconds. Choppy On The Intracoastal Waters.
Tonight...West Winds 15 To 20 Knots Becoming Northwest 10 To 15 Knots After Midnight. Seas 3 To 4 Feet With A Dominant Period 4 Seconds. Choppy On The Intracoastal Waters.
Sunday...West Winds 5 To 10 Knots Increasing To 10 To 15 Knots In The Afternoon. Seas 2 To 3 Feet With A Dominant Period 9 Seconds. A Moderate Chop On The Intracoastal Waters.
Sunday Night...West Winds 10 To 15 Knots. Seas 2 To 3 Feet. A Light Chop On The Intracoastal Waters.
Monday...Northwest Winds 15 To 20 Knots Diminishing To 10 To 15 Knots In The Afternoon. Seas 3 To 4 Feet. Choppy On The Intracoastal Waters.
Monday Night...North Winds 5 To 10 Knots. Seas 2 To 3 Feet.
Tuesday...North Winds 10 Knots. Seas 2 To 3 Feet.
Tuesday Night...North Winds 5 To 10 Knots. Seas 2 To 3 Feet.
Wednesday...North Winds 5 To 10 Knots. Seas 2 Feet.
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Synopsis for Atlantic coastal waters from Flagler Beach to Jupiter Inlet out 60 nm - AMZ500
403 AM EST Sat Jan 16 2021

Breezy west winds will continue through this afternoon across the waters producing hazardous conditions over the open waters. Winds will become northwest and decrease overnight into Sunday as a high pressure ridge builds toward Florida.

Gulf Stream Hazards: West winds 20 to 25 knots through the afternoon. Seas building to 4 to 6 feet.
The approximate location of the west wall of the Gulf Stream based on the Real Time Ocean Forecast System as of Wednesday, January 13th.
39 nautical miles east of Ponce Inlet.
31 nautical miles east of Port Canaveral.
24 nautical miles east of Sebastian Inlet.
15 nautical miles east of Fort Pierce Inlet.
8 nautical miles east of Saint Lucie Inlet.
Area Forecast Discussion
National Weather Service Melbourne FL
356am EST Sat Jan 16 2021

...Breezy and Cool Today... ...Colder Tonight with Frost Advisory Across Northern Lake and Inland Volusia Counties... Today - Tonight
Cold front has shifted southeast of the area, and will lead to a somewhat chilly start to the day with temperatures in the mid to upper 40s over much of the area by daybreak. It will remain dry across the area, with cooler than normal temperatures into the afternoon as highs are only expected to reach into the 60s. Elevated low level westerly flow up to 25-30 knots at 925-850mb will persist across the area behind this front today, and will lead to breezy/windy conditions into the afternoon. Sustained winds will reach around 15 to 20 mph, with gusts up to 30-35 mph possible. A period of partly to mostly cloudy skies expected through the morning as broken cloud deck moves in from the west, then skies expected to become mostly to partly sunny into the afternoon.

Colder temperatures expected into tonight, with lows falling into the mid 30s across northern Lake and inland Volusia counties. These temps combined with mostly clear skies and light winds should lead to patchy to areas of frost across this region, and have therefore issued a Frost Advisory for this area from 2AM-8AM Sunday. Farther south, lows in the upper 30s to low 40s are expected across much of the rest of east central Florida.

Sunday-Tuesday...A broad cyclonic trough centered over the OH valley early Sunday will move off the US E Coast early next week. advection of cool stable air will continue S into the local area during the period with slightly lower than normal temps and partly-mstly clear skies trending from Monday onward.

Extended...The flow pattern across the SRN Conus through the remainder of the week typifies presence of La Nina, with a zonal configuration through late week. An evolution to modest upper level ridging upstream across the Gulf into next weekend should bring a general warming trend the latter half of the week as M-U70s are expected by Thu onward, and no mentionable chance of rain development through the period into next weekend.

Today - Tonight
Poor to hazardous boating conditions will persist across the waters today behind the cold front. Small Craft Advisory offshore will continue through early this evening, where westerly winds will be closer to around 20 knots with seas up to 5-6 feet. Nearshore, small craft should exercise caution for winds around 15- 20 knots with seas 2-4 feet.

Sunday-Tuesday...Expect improving seas Sunday as high pressure dominates local conditions. West-NW winds will increase temporarily Monday as a dry front moves offshore the SE US coast. Headlines may be required for winds around 15 to 20 kts over the outer waters. High pressure will orient closer to the area Tue, bringing lighter winds.

Extended...Favorable conditions expected through midweek as high pressure brings winds generally 10 kts or less and seas 2 to 3 ft through Wednesday night.

Fire Weather
Much dryer and cooler air will move into the region during today in the wake of a cold front Friday night. Minimum RH conditions in the Mid to Upper 30s inland along with gusty winds out of the west will bring a sensitive fire weather period for several hours this afternoon. Becoming cold early Sunday with lows in the Mid to Upper 30s in coldest spots. Some frost is possible mainly north and west of metro Orlando early Sunday. Generally mild conditions will continue for much of the upcoming week with nor mentionable rain chance expected through the workweek.

NOAA Melbourne FL Office: Watches - Warnings - Advisories
FL...Frost Advisory from 2am to 8am EST Sunday for Inland Volusia- Northern Lake.

AM...Small Craft Advisory until 7pm EST this evening for Flagler Beach to Volusia-Brevard County Line 20-60 nm-Sebastian Inlet to Jupiter Inlet 20-60 nm-Volusia-Brevard County Line to Sebastian Inlet 20-60 nm.