Jupiter Inlet to Deerfield Beach, FL out 20nm Marine Forecast
| Tonight...E Winds 15 To 20 Kt. Seas 4 To 5 Ft, Occasionally To 6 Ft. Wave Detail: E 4 Ft At 5 Seconds And Nw 2 Ft At 7 Seconds. Intracoastal Waters Choppy In Exposed Areas. A Slight Chance Of Showers After Midnight. |
| Thu...Se Winds 15 To 20 Kt. Seas 3 To 4 Ft, Occasionally To 5 Ft. Wave Detail: E 4 Ft At 5 Seconds And Nw 1 Foot At 7 Seconds. Intracoastal Waters Choppy In Exposed Areas. A Chance Of Showers In The Afternoon. |
| Thu Night...S Winds 10 To 15 Kt. Seas 2 To 3 Ft. Wave Detail: Se 3 Ft At 5 Seconds And N 1 Foot At 7 Seconds. Intracoastal Waters Light Chop. A Chance Of Showers. A Chance Of Tstms After Midnight. |
| Fri...Sw Winds 10 To 15 Kt, Becoming Nw In The Afternoon. Seas Around 2 Ft. Wave Detail: Se 2 Ft At 5 Seconds And W 2 Ft At 6 Seconds. Intracoastal Waters Light Chop. |
| Fri Night...N Winds 10 To 15 Kt. Seas 2 To 3 Ft. Wave Detail: N 3 Ft At 4 Seconds And E 1 Foot At 9 Seconds. Intracoastal Waters Light Chop. |
| Sat And Sat Night...E Winds 10 To 15 Kt. Seas 2 To 3 Ft. Wave Detail: Ne 3 Ft At 5 Seconds. Intracoastal Waters A Moderate Chop. |
| Sun...Ne Winds 10 To 15 Kt. Seas 2 To 3 Ft. Intracoastal Waters A Moderate Chop. |
| Sun Night...Ne Winds 15 To 20 Kt. Seas 3 To 5 Ft, Occasionally To 6 Ft. Intracoastal Waters Choppy In Exposed Areas. |
| Mon...Ne Winds 20 To 25 Kt. Seas 5 To 8 Ft, Occasionally To 10 Ft. Intracoastal Waters Rough In Exposed Areas. |
| Mon Night...E Winds Around 25 Kt. Seas 6 To 9 Ft, Occasionally To 11 Ft. Intracoastal Waters Rough In Exposed Areas. Winds And Seas Higher In And Near Tstms. |
| Area Forecast Discussion National Weather Service Miami FL 544pm EST Wednesday Dec 17 2025 Issued at 141pm EST Wednesday Dec 17 2025 The forecast remains on track with minimal chances for showers today along the east coast, which if anything will be shallow with minimal rainfall. Easterly flow will keep cloud cover increased over the east coast with temperatures lower as a result. Temperatures will peak in the upper 70s to low 80s across South Florida this afternoon. .SHORT TERM... (Today through Thursday) Issued at 135am EST Wednesday Dec 17 2025 Weak mid level ridging will generally remain in place across South Florida today, however, the ridge axis will shift off into the western Atlantic as the day progresses out ahead of an amplifying trough pushing into the western Gulf from the Southern Plains. This will help to create a wind shift aloft as the winds gradually become west then southwesterly as the day progresses. At the surface, high pressure centered off to the northeast will continue to shift further eastward into the Atlantic. South Florida will remain on the southwestern periphery of this ridge today and tonight. This shift will allow for the pressure gradient at the surface to decrease across the region as winds will remain easterly into this afternoon into tonight. Some moisture advection will begin to occur throughout the column as mid level winds become southwesterly today. While PWATs (Precipitable Waters) will still remain low enough today to support mainly dry conditions, they could rise and range from 1.0 to 1.2 inches this afternoon across Southwest Florida as well as locations south of Alligator Alley. The will be just enough moisture to support isolated shower development along the easterly breeze today and tonight. Any shower development will remain rather low topped and short lived as the dry air layer in the mid to upper levels will be very slow to erode. High temperatures today will rise into the upper 70s and lower 80s while low temperatures tonight range from around 60 west of Lake Okeechobee to the upper 60s across the east coast metro areas. Heading into Thursday, mid level ridging gets shunted further to the east as the approaching mid level shortwave trough pushes eastward across the Gulf. At the surface, an elongated frontal boundary will extend southwestward from the Great Lakes region through the Midwest and down into the Deep South as well as into the northern Gulf. These two features will help to increase moisture across the region as southwesterly winds continue aloft and winds at the surface begin to veer and become southeasterly as the day progresses. The global and ensemble guidance suite shows PWATs (Precipitable Waters) rapidly increasing on Thursday and eventually ranging between 1.5 to 1.7 across most of the area by the afternoon hours. This will be enough to allow for a low end chance of showers area wide mainly during the afternoon hours on Thursday. Most of the activity will be isolated to scattered in nature, however, a rogue thunderstorm or two cannot be entirely ruled out later in the day. High temperatures on Thursday will rise into the lower 80s across most areas, however, mid 80s are possible across the interior portions of Southwest Florida. Long Term (Thursday night through Tuesday) Issued at 135am EST Wednesday Dec 17 2025 Heading into Thursday night and Friday the mid level shortwave trough sweeps eastward across most of the Florida Peninsula and then northeastward into the western Atlantic. The latest global and ensemble model suite has shifted the passage of the trough axis a bit further south, however, that doesnt really change the impacts of the sensible weather much as the best mid to upper level support still remains well off to the north. At the surface, this will cause the frontal boundary to rapidly weaken as it slowly moves southeastward into the region later on Friday. This will keep just enough lower level moisture in place out ahead of the front to support a low end chance of showers especially across the eastern areas through Friday. Chances of thunderstorm development will remain on the low side as the best lifting mechanisms in the mid to upper levels remain up to the north. With southwesterly winds developing ahead of the front on Friday, high temperatures will remain warm as they rise into the lower to mid 80s across most of the region. For the upcoming weekend, uncertainty in the forecast rises a bit as mid level ridging tries to build back in from the south, and a strong area of high pressure tries to build in from the north at the surface. The question in place will be what happens with the dissipating frontal boundary as guidance continues to show some lingering moisture pooling over the area with the front stalled out nearby or just to the south. This scenario keeps the really dry air locked in place further away from the region across Central and Northern Florida. Winds will remain east northeasterly through the weekend and with just enough moisture in place, a slight chance of showers cannot be ruled out especially during the afternoon hours during peak diurnal heating. High temperatures over the weekend will generally remain in the lower 80s across most areas, however, mid 80s will be possible across interior sections of Southwest Florida. Early next week, the latest ensemble guidance shows a rather strong mid level ridge expanding northeastward across the Southern Plains and into the Southeast. With a large surface area of high pressure centered off to the northeast, this will help to keep mainly dry conditions in place during this time frame. The only exception to this will be the slight chance of a shower or two along the east coast with the east northeasterly wind flow in place. High temperatures will be near or slightly above climatological normals during this time frame. Marine Issued at 135am EST Wednesday Dec 17 2025 A moderate easterly breeze will continue across most of the local waters today before shifting and become southeasterly on Thursday. These winds may become occasionally fresh across the Atlantic waters during this time frame. Seas across the Atlantic waters will range from 3 to 5 feet today before diminishing and ranging between 2 to 4 feet on Thursday. Seas across the Gulf waters will remain at 1 to 3 feet through Thursday. Chances of showers will increase across all local waters on Thursday into Friday as a cold front approaches and moves over the region from the northwest. An isolated thunderstorm cannot be ruled out on Thursday afternoon into Thursday evening. Beaches Issued at 135am EST Wednesday Dec 17 2025 Due to persistent onshore flow, a high risk of rip currents will continue through Thursday across the Atlantic Coast beaches. The risk of rip currents will gradually diminish on Friday as winds shift and become southwesterly ahead of an approaching cold front. NOAA Miami FL Office: Watches - Warnings - Advisories FL...High Rip Current Risk through Thursday evening for FLZ168-172- 173. AM...None. GM...None. |
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