Marine Weather Net

Sebastian Inlet to Jupiter Inlet 20-60 NM Marine Forecast


TODAY

SW
WINDS
15 - 20
KNOTS

TONIGHT

N
WINDS
20 - 25
KNOTS

FRIDAY

N
WINDS
15 - 20
KNOTS

FRIDAY NIGHT

NE
WINDS
10 - 15
KNOTS

The Marine Weather Forecast In Detail:
AMZ575 Forecast Issued: 417 AM EDT Thu Mar 28 2024

SMALL CRAFT SHOULD EXERCISE CAUTION THIS MORNING ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING THROUGH FRIDAY EVENING...
Today...Southwest Winds 15 To 20 Knots, Becoming West 20 To 25 Knots Early In The Afternoon, Then, Becoming Northwest Late. Occasional Gusts To Gale Force In The Afternoon. Seas 5 To 7 Feet With Occasional Seas To 9 Feet. A Dominant Period 11 Seconds. A Chance Of Showers And A Slight Chance Of Thunderstorms.
Tonight...North Winds 20 To 25 Knots. Occasional Gusts To Gale Force In The Evening. Seas 8 To 10 Feet With Occasional Seas To 14 Feet. A Dominant Period 7 Seconds.
Friday...North Winds 15 To 20 Knots, Becoming Northeast 10 To 15 Knots In The Afternoon. Seas 7 To 9 Feet With Occasional Seas To 11 Feet. A Dominant Period 9 Seconds.
Friday Night...Northeast Winds 10 To 15 Knots, Becoming East 5 To 10 Knots After Midnight. Seas 5 To 7 Feet With Occasional Seas To 9 Feet.
Saturday...East Winds 5 To 10 Knots. Seas 4 To 6 Feet With Occasional Seas To 7 Feet.
Saturday Night...South Winds 5 To 10 Knots. Seas 3 To 5 Feet With Occasional Seas To 6 Feet.
Sunday...South Winds 5 To 10 Knots. Seas 3 To 4 Feet With Occasional Seas To 5 Feet.
Sunday Night...South Winds 10 To 15 Knots. Seas 2 To 3 Feet.
Monday...South Winds 10 To 15 Knots. Seas 2 To 3 Feet. Winds And Seas Higher In And Near Thunderstorms.
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Area Forecast Discussion
National Weather Service Melbourne FL
455am EDT Thu Mar 28 2024

Marine
Issued at 455am EDT Thu Mar 28 2024

Today - Tonight
Poor boating conditions this morning will become hazardous across the coastal waters as winds increase with a passing cold front over the area. W/SW winds up to 15-20 knots early this morning will become N/NW around 20-25 knots into the afternoon. Occasional gusts up to gale force will be possible over the offshore waters during the afternoon and evening hours. Seas will build from 4-6 feet this morning up to 6-8 feet offshore through the afternoon, and up to 7-10 feet across the waters into tonight. A Small Craft Advisory goes into effect offshore by late morning and expands to include all of the waters at 2PM this afternoon. The Small Craft Advisory will then continue across the entire coastal waters into tonight.

Friday-Monday... Poor to hazardous boating conditions will gradually improve into the weekend. Northeast winds at 10-15kts are expected to veer onshore Saturday and Sunday at 8-12kts, before veering south-southwest Monday. Seas will range from 5-7ft nearshore and up to 7-9ft offshore over the Gulf Stream Friday, then subside to 3-4ft nearshore and up to 5 ft offshore Saturday, and 2-4ft over the local Atlantic (0-60nm) Sunday.

Fire Weather
Issued at 455am EDT Thu Mar 28 2024

Today...A cold front will cross the area this morning and early afternoon, with scattered showers and isolated storms developing with this boundary and shifting offshore. Breezy to windy NW winds between 15 to 25 mph will develop behind the front, with gusts up to 35 mph possible at times through this afternoon. Much drier air will quickly filter in behind the front, with Min RH values falling as low as the upper 30s to low 40s across the interior, and high dispersion values developing through the afternoon. This will lead to increase in fire sensitivity today, with control problems possible with any new or existing brush fires.

Friday - Sunday
Fire sensitive conditions are expected late week and into the weekend. Northeast winds at 8-12knots are forecast Friday, before veering onshore with light and variable winds well inland Saturday. Winds are then forecast to veer south-southwest inland at 5-10kts and onshore along the coast into Sunday afternoon. Minimum RH values are expected to drop into the upper 20s to low 40 Friday and Saturday afternoons, then the mid 30s to mid 40s Sunday.

Hydrology
Issued at 455am EDT Thu Mar 28 2024

Increasing N/NW winds behind the passing cold front today, are currently forecast to allow river levels along the St. Johns River at Astor to rise to or just above Action Stage of 2.0 feet late this week. River levels should then fall below Action Stage into this weekend, as winds decrease and become onshore.

NOAA Melbourne FL Office: Watches - Warnings - Advisories
FL...None. AM...Small Craft Advisory from 2pm this afternoon to 5am EDT Friday for AMZ550.

Small Craft Advisory from 2pm this afternoon to 10am EDT Friday for AMZ552.

Small Craft Advisory from 2pm this afternoon to 8pm EDT Friday for AMZ555.

Small Craft Advisory from 11am this morning to 8pm EDT Friday for AMZ570-572-575.