Sebastian Inlet to Jupiter Inlet out 20nm Marine Forecast
| Tonight...East Winds 15 To 20 Knots. Seas 4 To 5 Feet, Occasionally To 6 Feet. Wave Detail: East 5 Feet At 6 Seconds. Choppy On The Intracoastal Waters. A Slight Chance Of Showers And Thunderstorms. |
| Tuesday...East Winds Around 15 Knots. Seas 3 To 4 Feet. Wave Detail: East 4 Feet At 6 Seconds. A Moderate Chop On The Intracoastal Waters. A Slight Chance Of Showers And Thunderstorms. |
| Tuesday Night...East Winds 10 To 15 Knots. Seas 3 To 4 Feet. Wave Detail: East 4 Feet At 7 Seconds. A Light Chop On The Intracoastal Waters. A Slight Chance Of Showers And Thunderstorms. |
| Wednesday...East Winds 10 To 15 Knots. Seas 3 Feet. Wave Detail: East 3 Feet At 7 Seconds. A Moderate Chop On The Intracoastal Waters. A Slight Chance Of Showers And Thunderstorms. |
| Wednesday Night...East Winds 10 To 15 Knots, Diminishing To 5 To 10 Knots After Midnight. Seas 2 To 3 Feet. Wave Detail: East 3 Feet At 9 Seconds And Southeast 2 Feet At 4 Seconds. A Light Chop On The Intracoastal Waters. A Slight Chance Of Showers. A Slight Chance Of Thunderstorms After Midnight. |
| Thursday...East Winds 5 To 10 Knots, Increasing To 10 To 15 Knots In The Afternoon. Seas 2 To 3 Feet. Wave Detail: East 3 Feet At 9 Seconds And Southeast 2 Feet At 5 Seconds. A Moderate Chop On The Intracoastal Waters. A Slight Chance Of Showers And Thunderstorms. |
| Thursday Night...East Winds 10 To 15 Knots. Seas 2 To 3 Feet. A Light Chop On The Intracoastal Waters. A Slight Chance Of Thunderstorms In The Evening. A Slight Chance Of Showers. |
| Friday...East Winds 10 To 15 Knots. Seas 2 To 3 Feet. A Moderate Chop On The Intracoastal Waters. A Chance Of Showers And Thunderstorms In The Afternoon. |
| Friday Night...Southeast Winds 10 To 15 Knots. Seas 3 Feet. A Light Chop On The Intracoastal Waters. A Slight Chance Of Thunderstorms. A Slight Chance Of Showers In The Evening, Then A Chance Of Showers After Midnight. |
| Saturday...Southeast Winds 10 To 15 Knots. Seas 3 Feet. A Moderate Chop On The Intracoastal Waters. A Chance Of Showers. A Slight Chance Of Thunderstorms In The Morning, Then A Chance Of Thunderstorms In The Afternoon. |
| Saturday Night...Southeast Winds 10 To 15 Knots. Seas 3 Feet. A Light Chop On The Intracoastal Waters. A Chance Of Showers. A Chance Of Thunderstorms In The Evening, Then A Slight Chance Of Thunderstorms After Midnight. Winds And Waves Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Melbourne FL 143am EDT Tuesday May 19 2026 Issued at 245pm EDT Monday May 18 2026 Now-Tonight...Showers and scattered storms from this morning have continued into the early part of the afternoon along the Treasure Coast. This is where 1.6-1.7"+ PW exist, according to GOES-derived PW imagery. Farther north, mostly dry conditions continue with temperatures in the mid/upper 80s. CAMs are suggesting a gradual end to coastal rain/storms, transitioning activity toward the west FL coast late this afternoon and evening. However, model initialization has lagged behind what is being observed on radar, so trends will be monitored for coastal activity to linger a bit longer. East- southeast winds remain gusty, reaching 25 mph at times. Across the interior, wind speeds are forecast to decrease after sunset to 5-10 mph. Along the coast from the Cape southward, persistent easterly flow looks to keep winds elevated (10-15 mph) through the night. As a result, mid 70s are forecast along the Volusia/north Brevard coast while lows in the upper 70s are expected. Isolated coastal showers and occasional lightning strikes cannot be ruled out overnight, though chances are low (15-20%). Tuesday-Sunday...Not a whole lot of change is expected to our overall setup from mid week into the Memorial Day weekend. Surface high pressure remains anchored well offshore over the Atlantic with an H5 ridge well north of Florida. There is a broad mid level low that rotates toward the ECFL coast Wednesday, helping to moisten 300- 500mb layer a bit more. It remains to be seen whether that will at all support any more shower/storm coverage, particularly at the coast. By the end of the week, this feature becomes rather disorganized while moving away from ECFL, toward the Bahamas. With continued ESE flow, rain chances that start the day at the coast will again end across the interior and west coast of FL. Precip chances increase modestly Friday into the weekend as moisture increases areawide. This update carries a 40-55% chance for showers and storms each afternoon, which is a slight downward trend from this morning's forecast (but closer to climo). H5 temps will be warming as well, so the primary concern with any stronger storm would be gusty winds. High temperatures warm into the low 90s for much of the area after Thursday, with the coast remaining in the upper 80s behind the daily sea breeze. Gusts around 20-25 mph along and in the wake of the sea breeze are likely to continue as well. With additional moisture comes a higher heat index, forecast to reach the upper 90s to low 100s Friday - Sunday arm and muggy conditions each night will provide little relief around the clock, so at least a Moderate HeatRisk is forecast. For those considering beach plans this holiday weekend, a moderate to high risk of rip currents will continue as onshore winds persist. Always heed the advice of lifeguards! When red flags are flying, entering the water is strongly discouraged. Marine Issued at 245pm EDT Monday May 18 2026 East-southeast flow, gusty at times, remains through the week as high pressure remains anchored well offshore. Embedded in the onshore flow at times are isolated to scattered showers and storms, some of which contain frequent lightning and gusty winds around 30 kt. Outside of storms, seas may briefly build to 5 ft overnight but generally remain 2-4 ft through late week. Small craft should exercise caution, offshore south of the Cape and in the nearshore Treasure Coast waters tonight. Fire Weather Issued at 245pm EDT Monday May 18 2026 High pressure centered well offshore will help maintain east- southeasterly winds through the week and into the weekend. Sustained winds during the day of 10-20 mph with gusts around 25 mph are possible, along with briefly higher gusts embedded in showers or isolated lightning storms. The greatest chance for rain and storms will be south of the Cape, transitioning inland with the afternoon east coast sea breeze. However, many locations will remain dry. Recent dryness will prolong fire sensitive conditions, and any lightning strikes could lead to new fire starts. NOAA Melbourne FL Office: Watches - Warnings - Advisories FL...None. AM...None. |
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