Sebastian Inlet to Jupiter Inlet out 20nm Marine Forecast
| Today...North Winds Around 20 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet, Building To 5 To 6 Feet, Occasionally To 8 Feet This Afternoon. Wave Detail: North 5 Feet At 7 Seconds And Southeast 1 Foot At 3 Seconds, Becoming North 6 Feet At 6 Seconds And Northeast 2 Feet At 13 Seconds This Afternoon. Choppy On The Intracoastal Waters. A Slight Chance Of Showers This Morning. |
| Tonight...North Winds 15 To 20 Knots. Seas 5 To 6 Feet, Occasionally To 8 Feet. Wave Detail: North 5 Feet At 7 Seconds And Northeast 3 Feet At 13 Seconds. Choppy On The Intracoastal Waters. |
| Wednesday...North Winds 15 To 20 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. Wave Detail: North 5 Feet At 7 Seconds And Northeast 3 Feet At 12 Seconds. Choppy On The Intracoastal Waters. |
| Wednesday Night...North Winds 10 To 15 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet. Wave Detail: North 4 Feet At 7 Seconds And Northeast 3 Feet At 12 Seconds. A Light Chop On The Intracoastal Waters. |
| Thursday...North Winds 10 To 15 Knots. Seas 3 To 4 Feet. Wave Detail: North 4 Feet At 8 Seconds And Northeast 4 Feet At 11 Seconds. A Moderate Chop On The Intracoastal Waters. A Slight Chance Of Showers In The Afternoon. |
| Thursday Night...North Winds Around 10 Knots. Seas 3 To 4 Feet. Wave Detail: North 3 Feet At 8 Seconds And Northeast 3 Feet At 11 Seconds. Mostly Smooth On The Intracoastal Waters. |
| Friday...North Winds 5 To 10 Knots, Becoming Northeast In The Afternoon. Seas 2 To 3 Feet. A Light Chop On The Intracoastal Waters. |
| Friday Night...Southeast Winds 10 To 15 Knots, Becoming South After Midnight. Seas 2 To 3 Feet. A Light Chop On The Intracoastal Waters. A Slight Chance Of Showers After Midnight. |
| Saturday...South Winds 10 To 15 Knots. Seas 2 To 3 Feet. A Moderate Chop On The Intracoastal Waters. A Slight Chance Of Showers In The Afternoon. |
| Saturday Night...South Winds 10 To 15 Knots. Seas 2 To 3 Feet. A Light Chop On The Intracoastal Waters. A Slight Chance Of Showers After Midnight. |
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Area Forecast Discussion National Weather Service Melbourne FL 635am EST Tuesday Jan 14 2025 .PREVIOUS Issued at 436am EST Tuesday Jan 14 2025 Currently...What constitutes the center of the weak disturbance that brought yesterday's showers has pushed offshore, with the tailing cold front (such as it is) draped across central Florida. Mist from low clouds along the frontal boundary is reducing visibility to 3-5 miles at times, and occasionally producing very light sprinkles. This activity will work its way through the southern counties through the mid-morning or so, then push south or offshore. Today - Tonight The weakening disturbance is pushed south of the area by high pressure building into the Deep South, bringing mostly dry and cooler than normal conditions back to East Central Florida. A moderate northerly breeze develops behind the cold front associated with the disturbance, with breezy and gusty conditions possible along the coast. Don't expect much warming up today as skies remain mostly cloudy to overcast, only clearing out in the late afternoon and evening, minimizing daytime heating. Afternoon highs generally range from the L60-M60s along and north of the I-4 corridor, to the U60s-L70s from Lake Okeechobee to the Treasure Coast. Wind speeds remain elevated overnight, which combined with lows dropping into the 40s across much of the area, will push wind chill values down into the U30s-L40s for many. The exception will be from coastal Brevard south towards Lake Okeechobee east, including the Treasure Coast, where onshore flow moderates lows to the 50s and wind chills to the M40s-M50s. A southward flowing longshore current is forecast to develop at the beaches today from the fresh northerly winds. Wednesday-Friday...Flow aloft becomes zonal between a trough over the northeastern US and ridging over the Caribbean. High pressure over the Gulf states is reinforced by another area of high pressure associated with a slug of cold arctic air surging down the central US, reaching Florida around Thursday. Impulses of shortwave energy will move through the pattern, the most significant in this period looking to sweep overheard Thursday or so. Models continue to develop another Gulf disturbance with the shortwave, and have come into better agreement for a weaker disturbance, but continue to disagree how far north the associated moisture gets. The ECM continues to consistently forecast a weaker disturbance and strong higher pressure over the Deep South, keeping most of the moisture south of the area with little, if any, rain chances for us the second half of the week. The GFS (Global Forecast System) has been creeping closer to the ECM, keeping most of the moisture over South Florida and our southern counties. Given the GFS trend and the 00Z GFS ensemble mean PWATs (Precipitable Waters) looking an awful lot like the ECM, less than 1.0" across most of East Central Florida, the official forecast continues to call for mostly dry (maybe some onshore moving showers Wednesday) and cooler than normal conditions through Friday morning. High temperatures remain mostly in the 60s, maybe getting to 70 in Martin County. Cold nigheights and mornings as lows drop into the 40s across most of the area, except along the Treasure Coast where onshore flow keeps lows in the 50s, with the chilliest temperatures Thursday night into Friday morning as lows drop into the U30s north of I-4, and the L40s across the northern inland counties. Warming starts Friday as the surface high is pushed offshore by a substantial low pressure system developing in the central US, shifting winds easterly then southerly. Highs Friday still in the 60s, but noticeably warmer than Thursday. Lows gets back into the 50s for most, except north of I-4 in the U40s. Saturday-Monday...Looking warmer and much wetter than it's been for a while. Pretty good agreement frontal boundaries from a large and complex weather system encompassing most of the CONUS reach Florida Saturday. As the parent low lifts northeast, and an equally substantial high pressure builds into the central US, progression of the front across Florida slows, keeping it in the neighborhood through the weekend. Still some uncertainty and disagreement between models, especially from Monday onward as the forecast becomes dependent on the potential for another Gulf disturbance. Opted to keep rain chances at just 20 pct or less, lower than pretty much all guidance due to uncertainty, with the expectation these will increase in future forecasts if the trend is for a continued active weather period. Highs get back into the 70s and maybe even low 80s, with lows in the 60s Saturday and Sunday, then cooling off again early next week. Marine Issued at 436am EST Tuesday Jan 14 2025 Today - Tonight Poor to hazardous boating conditions today from fresh northerly winds and building seas behind a weak low pressure system. High pressure builds across the Deep South behind the disturbance. North winds around 20 kts build seas 3-5 ft early this morning to 4-6 ft nearshore and 5-7 ft offshore this evening. Winds diminish to 15-20 kts tonight. A few light showers possible. Wednesday-Saturday...High pressure continues to build towards Florida, but boating conditions will remain unfavorable to hazardous through Wednesday as choppy 4-5 ft seas in the nearshore, seas up to 7 ft in the Gulf Stream, and northerly winds 15-20 kts linger. There is potential for another disturbance to develop in the Gulf and move towards central Florida Thursday, but chances of this scenario are decreasing. Generally favorable boating Thursday and Friday if high pressure over the Gulf states keeps the disturbance suppressed south of central Florida and the local Atlantic waters, with N-NW 10-15 kts Thursday decreasing to 5-10 kts Friday while veering to southerly through the day. Southerly winds Saturday are forecast to increase to 10-20 kts, but would have a flattening affect on the Gulf Stream. Fire Weather Issued at 436am EST Tuesday Jan 14 2025 Wednesday and Friday...Reinforcing dry air is forecast to push humidity values towards critical values of 35-40 pct across the western interior from inland Volusia south into parts of Osceola County. Some moisture recovery on Thursday is expected to keep humidity values above 40 pct. NOAA Melbourne FL Office: Watches - Warnings - Advisories FL...None. AM...Small Craft Advisory until 7pm EST this evening for AMZ550-552- 570. Small Craft Advisory until 4am EST Wednesday for AMZ555. Small Craft Advisory until 4pm EST Wednesday for AMZ572. Small Craft Advisory until 4pm EST Wednesday for AMZ575. |
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