Marine Weather Net

Sebastian Inlet to Jupiter Inlet 20-60 NM Marine Forecast


10 - 15


10 - 15




10 - 15

The Marine Weather Forecast In Detail:
AMZ575 Forecast Issued: 323 PM EDT Sat May 08 2021

Tonight...East Winds 10 To 15 Knots. Seas 3 To 4 Feet With A Dominant Period 7 Seconds.
Sunday...Southeast Winds 10 To 15 Knots. Seas 3 To 4 Feet With A Dominant Period 6 Seconds.
Sunday Night...Southeast Winds 15 Knots. Seas 3 Feet With A Dominant Period 5 Seconds. Slight Chance Of Showers.
Monday...South Winds 10 To 15 Knots. Seas 2 To 3 Feet. Slight Chance Of Showers. Slight Chance Of Thunderstorms In The Afternoon.
Monday Night...South Winds 15 To 20 Knots Diminishing To 10 To 15 Knots After Midnight. Seas 2 To 3 Feet. Chance Of Showers And Thunderstorms.
Tuesday...Southwest Winds 5 To 10 Knots Becoming Southeast In The Afternoon. Seas 2 To 3 Feet. Slight Chance Of Showers And Thunderstorms In The Afternoon.
Tuesday Night...Southeast Winds 5 To 10 Knots. Seas 1 To 2 Feet. Chance Of Showers And Thunderstorms.
Wednesday...Southeast Winds 5 To 10 Knots. Seas 1 To 2 Feet. Slight Chance Of Showers And Thunderstorms.
Wednesday Night...Southeast Winds 10 Knots. Seas 3 To 4 Feet. Chance Of Showers And Thunderstorms.
Thursday...Southeast Winds 10 Knots. Seas 3 To 5 Feet. Showers Likely And Chance Of Thunderstorms.
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Synopsis for Atlantic coastal waters from Flagler Beach to Jupiter Inlet out 60 nm - AMZ500
323 PM EDT Sat May 8 2021

High pressure to the north of the local area will push east over the western Atlantic Sunday. A trailing ridge axis will remain across the Florida peninsula through the first half of the work week. A weak front is forecast to sag into north Florida Wednesday.

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 Thursday, May 6th.
41 nautical miles east of Ponce Inlet.
31 nautical miles east of Port Canaveral.
23 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
338pm EDT Sat May 8 2021

Rest of Today- Tonight...Pleasant conditions will continue through the time period. A few cumulus clouds are streaming across southern Florida this afternoon, just clipping Martin and Okeechobee counties, these clouds are expected to dissipate after sundown. Generally clear skies, with no mentionable rain chances through tonight. Winds will be east/northeast this afternoon before veering east/southeast overnight. Afternoon highs will be in the mid 80s across the interior and low 80s across the coast. Overnight lows will be a little warmer than the yesterday, with lows in the upper 50s across the far N Volusia and NE Lake counties, and low 60s everywhere else, except upper 60s along the immediate coast of Martin county.

Sunday...High pressure will slowly start to shift eastward through the day on Sunday. Winds will be southeast around 5 mph in the morning before increasing to around 10-12 mph in the afternoon. The dry airmass that has been present over the area for the past couple days will continue, brining with it plenty of sunshine for Mother's Day. However, the upper-level ridge over south Florida will weaken in the afternoon, allowing rain chances to return to the southern part of the CWA. The sea breeze is expected to form and move inland in the afternoon; therefore, a slight chance of afternoon showers and lightning storms will be possible across the Treasure Coast and near Lake Okeechobee. Temperatures will once again warm up on Sunday due to the southerly flow, with afternoon high temperatures in the upper 80s/low 90s across the interior, and mid 80s across the coast.

Mon-Fri (previous modified)...A mid/upper level trough upstream of east central FL will dig into the Deep South through the first part of the workweek which will cause the upper-level ridge over Florida to flatten a bit with zonal flow aloft. At the surface, a ridge extending from the central Atlantic will remain over the local area through late Tue. This will allow moisture to increase as a southeasterly flow continues with the back side of the surface high edging over Florida. The return of significant moisture and warm air advection will interact with the seabreeze to create isolated-to-scattered showers and thunderstorms daily. Temperatures will warm up a bit heading into early next week with highs in the upper 80s to lower 90s and lows in the upper 60s to lower 70s Sunday through Wednesday.

A better chance for rain will come on Wednesday and Thursday as a frontal boundary parks over northern Florida. Scattered showers and storms will be possible areawide, especially in the afternoon/ early evening hours with daytime heating and sea breeze interactions. The front will finally sag further southeast once we head into the end of the week which means the best chance for widespread rain will be Thursday into Friday with numerous showers and thunderstorms expected. Highs will stay in the upper 80s to lower 90s with lows in the upper 60s to lower 70s through Wednesday before moderating due to rain cooled air towards the end of the week.

Rest of Today-Sun...Weak high pressure system will continue through the overnight hours. A cumulus deck has set up over the south, filtering into the southern waters. Current buoy 41009 data shows seas are around 3 ft with a dominate period of 7 seconds. Winds will be E/NE around 10 KT overnight, veering to the E/SE and increasing to around 15 KT on Sunday afternoon. Seas will be 2-3 ft with 4 ft in the offshore waters of the southern waters.

Sunday night-Thu (previous modified)...High pressure over the western Atlantic will shift east and the ridge will remain across the local Atlantic waters. As a low pressure exits the northeast U.S., winds will briefly increase offshore on Sunday night to 15-20 kt but decrease to 15 kt by Monday morning. Winds from the south- southeast at around 14-18kts on Monday will relax into Tuesday and Wednesday with waves of 1- 3ft expected through the middle part of the week and building to 3-5 ft on Thu.

Fire Weather
Sunday...High pressure will be shifting east but the ridge will remain over the FL peninsula on Sunday. Surface and transport winds will start light in the morning but increase in the late morning and afternoon specially along the coast. SE wind flow from surface to 20 kft will develop but modification of the dry airmass will be slow esp over the interior. Therefore, Min RH values will again fall below 40 percent over the interior. Min RH values will hold at 40-50 percent along the coast.

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