Marine Weather Net

Volusia-Brevard County Line to Sebastian Inlet 20 - 60 NM Marine Forecast


TONIGHT

NE
WINDS
5 KNOTS

WEDNESDAY

NW
WINDS
10 - 15
KNOTS

WEDNESDAY NIGHT

N
WINDS
5 - 10
KNOTS

THURSDAY

W
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
AMZ572 Forecast Issued: 327 PM EST Tue Jan 19 2021

Tonight...Northeast Winds 5 Knots Becoming Northwest Towards Daybreak. Seas 2 Feet With A Dominant Period 9 Seconds.
Wednesday...Northwest Winds 10 To 15 Knots. Seas 2 To 3 Feet With A Dominant Period 5 Seconds.
Wednesday Night...North Winds 5 To 10 Knots Becoming Northwest After Midnight. Seas 2 To 3 Feet With A Dominant Period 5 Seconds.
Thursday...West Winds 5 To 10 Knots. Seas 2 To 3 Feet.
Thursday Night...Southwest Winds 10 To 15 Knots. Seas 3 To 4 Feet.
Friday...Southwest Winds 10 To 15 Knots. Seas 3 To 4 Feet.
Friday Night...West Winds 10 To 15 Knots. Seas 2 To 3 Feet.
Saturday...Northwest Winds 10 To 15 Knots Becoming North In The Afternoon. Seas 3 To 4 Feet. Slight Chance Of Showers.
Saturday Night...Northeast Winds 10 To 15 Knots. Seas 4 To 6 Feet. Slight Chance Of Showers.
Sunday...East Winds 10 To 15 Knots. Seas 5 Feet. Slight Chance Of Showers.
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Synopsis for Atlantic coastal waters from Flagler Beach to Jupiter Inlet out 60 nm - AMZ500
928 AM EST Tue Jan 19 2021

Light northwest winds will gradually veer to north and northeast with seas subsiding as a high pressure ridge builds over central Florida through mid week. Offshore flow will redevelop through late week as another high pressure ridge builds into south Florida behind a weak cool front moving across the western Atlantic. Conditions will be quite favorable for small craft operation.

Gulf Stream Hazards: None.
The approximate location of the west wall of the Gulf Stream based on the Real Time Ocean Forecast System as of Saturday, January 16th.
41 nautical miles east of Ponce Inlet.
32 nautical miles east of Port Canaveral.
26 nautical miles east of Sebastian Inlet.
17 nautical miles east of Fort Pierce Inlet.
12 nautical miles east of Saint Lucie Inlet.
Area Forecast Discussion
National Weather Service Melbourne FL
340pm EST Tuesday Jan 19 2021

Tonight...High pressure ridge axis will over the area will produce light winds and the onshore wind flow occurring now will back to a light NW drainage flow. There will be some cirrus streaming overhead but skies will be mostly clear. Min temps will be chilly in the low to mid 40s most areas, except upper 30s in the normally colder locations north of Orlando. Milder temps on the barrier islands and eastern Martin county in the low to mid 50s.

Wed...Conditions look very similar to today. A weak cool front will push offshore the SE U.S. coast and across NE FL before losing its momentum. North to northwest winds 5-10 mph will turn onshore (NE-E) along the coast in the afternoon. Max temps a little warmer reaching the low to mid 70s, except upper 60s along the Volusia coast.

Thursday-Friday...A weak cold front will slide offshore and dissipate early Thursday as high pressure quickly rebuilds across Florida. The ridge will move south and become elongated as a second "back door" cold front sags into north Florida Friday night. This front could bring a few light sprinkles to parts of far north Lake and Volusia counties late Friday night. Afternoon highs will climb from the low 70s Thursday into the mid/upper 70s on Friday. Morning lows go from upper 40s to low 50s Thursday to mid/upper 50s.

Saturday-Tuesday...(Modified Previous Discussion) Model guidance remains consistent for this weekend showing a weak front pushing south across central Florida, washing out by Sunday afternoon as high pressure builds across the western Carolinas and western Atlantic. The tight pressure gradient could result in breezy conditions along the immediate coastline this weekend. Model forecast soundings show saturated low-levels below 750mb and a veering wind profile (NE/E to NW) at the inversion level.

This profile looks to favor light marine showers across the Atlantic waters and coastal areas, with showers quickly dissipating west of Interstate 95. Have kept a 20 percent chance of showers this weekend, mainly for the coast. A post-frontal high over the SE CONUS builds SE over the adjacent Atlantic, resulting in dry conditions and SE flow Monday, which veers to SE on Tuesday. Clouds associated with the front, along with NE-E flow should result in slightly lower highs (L-M70s for most areas) with mins still in the M-U50s. Temps warm to the upper 70s/low 80s Monday and Tuesday with mins in the upper 50s.

Marine
Tonight/Wed...High pressure ridge axis will settle southward across the local Atlantic waters tonight followed by a weak cool front pushing off the SE US coast Wed. There will be a slight increase in NW winds behind the front Wednesday with speeds 10-14 knots. Seas 1-2 feet, except up to 3 feet offshore Wed.

Thursday-Sunday...Varying winds late this week and into the weekend as a couple of weak cold fronts and areas of high pressure move across the local waters. NW winds around 10 knots Thursday morning back to WSW/SW by the afternoon, then become W/SW at 10-15 knots Friday. The second weak front moves through Saturday causing winds to become NW around 15 knots and quickly snap to east Sunday as high pressure builds in. Seas 2-3 feet Thursday through Saturday, then increasing to 4-6 feet late Saturday into Sunday as swell increases in response to stronger pressure gradient and winds.

Fire Weather
A weak cool front will push offshore Georgia and north Florida Wednesday with high pressure then rebuilding across central and south Florida Thu and Fri. Dispersion values will improve to fair-good Wednesday due to increasing transport winds. Dry air will remain in place with minimum RH values around 30 percent across the central and north interior Wednesday afternoon. Higher min RH values are expected Thu-Fri though no rain is expected. Wind speeds will remain below 15 mph.


NOAA Melbourne FL Office: Watches - Warnings - Advisories
FL...None. AM...None.