Marine Weather Net

Sebastian Inlet to Jupiter Inlet 20-60 nm Marine Forecast


TONIGHT

NE
WINDS
10 - 15
KNOTS

TUESDAY

NE
WINDS
5 - 10
KNOTS

TUESDAY NIGHT

NE
WINDS
5 - 10
KNOTS

WEDNESDAY

NE
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
AMZ575 Forecast Issued: 325 PM EDT Mon Sep 23 2019

SMALL CRAFT SHOULD EXERCISE CAUTION TONIGHT
Tonight...Northeast Winds 10 To 15 Knots. Seas 4 To 6 Feet With A Dominant Period 10 Seconds.
Tuesday...Northeast Winds 5 To 10 Knots. Seas 4 To 5 Feet With A Dominant Period 11 Seconds.
Tuesday Night...Northeast Winds 5 To 10 Knots Becoming East After Midnight. Seas 3 To 5 Feet With A Dominant Period 10 Seconds.
Wednesday...Northeast Winds 5 To 10 Knots. Seas 3 To 4 Feet.
Wednesday Night...East Winds 5 To 10 Knots. Seas 3 To 4 Feet.
Thursday...East Winds 5 To 10 Knots. Seas 2 To 3 Feet.
Thursday Night...East Winds 10 To 15 Knots. Seas 2 To 3 Feet. Slight Chance Of Showers.
Friday...East Winds 10 To 15 Knots. Seas 2 To 3 Feet. Slight Chance Of Showers.
Friday Night...East Winds 10 To 15 Knots. Seas 2 To 3 Feet. Chance Of Showers.
Saturday...East Winds 10 To 15 Knots. Seas 2 To 3 Feet. Chance Of Showers.
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Synopsis for Atlantic coastal waters from Flagler Beach to Jupiter Inlet out 60 nm - AMZ500
325 PM EDT Mon Sep 23 2019

Waves largely associated with ocean swell will gradually diminish early this week, however seas will remain elevated up to 5 to 6 feet offshore with winds of 10 to 15 knots through late tonight. Seas will diminish to around 4 to 5 feet by Tuesday morning as swell diminishes further.

Gulf Stream Hazards: Seas up 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 September 18th. 50 nautical miles east of Ponce Inlet.
41 nautical miles east of Port Canaveral.
31 nautical miles east of Sebastian Inlet.
25 nautical miles east of Fort Pierce Inlet.
20 nautical miles east of Saint Lucie Inlet.
Area Forecast Discussion
National Weather Service Melbourne FL
324pm EDT Monday September 23 2019

Rest of Today - Tonight
GOES water vapor imagery indicates a deep, dry air mass remains in place over much of Florida. Very light sprinkles coming onshore in northern Brevard should dissipate after sunset. Otherwise, expect dry conditions. Rough surf and the threat for strong rip currents continue through this evening at all east central Florida beaches. Temperatures in the mid 80s this afternoon drop to around 80 degrees by early evening, with most areas cooling off to the upper 60s overnight.

Tuesday-Tuesday Night (Modified Previous Discussion)...Deep layer ridging builds from the Gulf of Mexico across the Florida peninsula with very warm temperatures aloft (700-500mb). Rather unimpressive PWAT (Precipitable Water) values in the 0.75-1.00 inch range. Weak surface high pressure across the area with a weak pressure gradient in place. Continue to keep Probability of Precipitation absent from the forecast. Light drainage (NW) flow winds early in the morning transitioning to onshore through the day areawide while remaining light. Highs in the mid 80s near the immediate coast and upper 80s to low 90s further into the interior. Lows will drop into the mid to upper 60s inland and around 70 degrees along the immediate coast.

Wednesday-Sunday (Previous Discussion)...Deep layer ridging breaks down as lower pressure moves into the area from the east with some cooler temperatures aloft (initially) and moisture gradually working back into the area late in the work-week and into the weekend. The deep layer moisture gradient will be rather tight with highest values south of Orlando as mid level pressures strengthen again across the Gulf Coast States and Southeast U.S., and temperatures aloft warm through the weekend. Rain chances increase slightly over the local coastal waters and along the coast by Friday with a better chance areawide Saturday and Sunday. Should see a daily sea breeze circulation moving inland each day with onshore flow dominant each afternoon. Highs in the mid to upper 80s near the coast and upper 80s to low 90s further into the interior. Lows in the upper 60s to low 70s Thursday morning as a warming trend kicks in overnight the remainder of the period with overnight mins in the low to mid 70s, except some upper 70s possible near the coast as onshore flow becomes better established.

Marine
Today - Tonight
Remaining dry aside from light sprinkles around the Cape. Northeast winds 10-15 knots this evening diminish to around 10 knots late tonight. Swells of 6-7 feet likely continue for the offshore waters through late tonight, before subsiding to 5 feet by sunrise. Nearshore seas will be 3-5 feet. Small craft should continue to exercise caution across most of the waters, though much improved boating conditions return tomorrow.

Tuesday-Friday (Previous Discussion)...Generally weak high pressure across the area. A light pressure gradient will be in place with wind speeds around 10 knots and an east coast sea breeze develops each afternoon. Seas generally 4-5 feet north of Ft. Pierce initially subsiding to 2-3 feet areawide by Thursday morning into Friday. Rain chances very low through the day on Thursday with a slight chance of shower threat returning gradually Thursday night into Friday from south to the north across the local waters.

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