Altamaha Sound to Fernandina Beach FL Marine Forecast
| Tonight...North To Northeast Winds Around 15 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet. Wave Detail: North 4 Feet At 5 Seconds And East 2 Feet At 9 Seconds. Intracoastal Waters A Moderate Chop. |
| Wednesday...Northeast Winds 10 To 15 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. Wave Detail: Northeast 3 Feet At 5 Seconds And East 2 Feet At 9 Seconds. Intracoastal Waters A Moderate Chop. |
| Wednesday Night...Northeast Winds 5 To 10 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. Wave Detail: East 3 Feet At 10 Seconds And Northeast 2 Feet At 5 Seconds. Intracoastal Waters Light Chop. |
| Thursday...Northeast Winds 5 To 10 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. Wave Detail: East 4 Feet At 10 Seconds And Northeast 2 Feet At 5 Seconds. Intracoastal Waters Light Chop. |
| Thursday Night And Friday...Northeast Winds 5 To 10 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. Wave Detail: East 4 Feet At 10 Seconds. Intracoastal Waters Light Chop. |
| Friday Night...Northeast Winds 5 To 10 Knots, Increasing To 10 To 15 Knots After Midnight. Seas 3 To 4 Feet, Occasionally To 5 Feet. Wave Detail: East 4 Feet At 10 Seconds And Northeast 2 Feet At 4 Seconds. Intracoastal Waters A Moderate Chop. A Slight Chance Of Showers After Midnight. |
| Saturday...Northeast Winds 15 To 20 Knots, Becoming Northwest 20 To 25 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet. Intracoastal Waters Rough. A Slight Chance Of Showers In The Morning, Then A Chance Of Showers. |
| Sunday...West Winds 15 To 20 Knots, Becoming North 20 To 25 Knots. Seas 5 To 8 Feet, Occasionally To 10 Feet. Intracoastal Waters Rough. A Chance Of Showers In The Morning, Then Showers Likely In The Afternoon. A Chance Of Showers Through The Night. |
| Area Forecast Discussion National Weather Service Jacksonville FL 609pm EST Tuesday Jan 20 2026 .KEY MESSAGES... For the latest NE FL and SE GA Daily Key Messages please visit: https:/www.weather.gov/media/jax/briefings/nws-jax-briefing.pdf - Freeze Warning and Frost Advisory for portions of NE FL and SE GA tonight into Wednesday morning - Moderate Rip Current Risk at the Northeast FL Beaches - Severe Drought Conditions Expanding Across our Region. Recent Freezes will Result in Drying of Available Fuels. Chances for Rainfall Increase this Weekend - Very low potential for mixed precipitation inland southeast GA over the weekend Quick update to issue a Frost Advisory around the edges of the Freeze Warning for coastal SE GA and portions of inland NE FL where temps will fall into the 33-36F range for the Frost Advisory along with Areas/Widespread Frost after midnight tonight, while temps of 28-32F are expected in the Freeze Warning. Temps are expected to crash quickly after sunset in the dry air mass under mostly clear skies and winds becoming near calm over inland areas. Some increase in high clouds is expected later tonight, but overall these will remain on the thin side so good radiational cooling conditions are expected through sunrise Wednesday morning. Near Term - Until 6am Wednesday Morning High pressure over the area will begin to shift towards the east- northeast through the overnight hours into Wednesday. Light to breezy northerly winds Today as the high pressure keeps the local gradient tight. High clouds continue to move across the area through the rest of the day. Daytime highs in the 50s across SE GA and NE FL, with lower 60s across north central FL. Tonight...Northeasterly winds will begin to weaken during the overnight hours as the high pressure shifts towards the east- northeast. Sub-Freezing conditions develop once again this evening, but not as widespread as last night. Locations across inland SE GA and west of the JAX metro along the I-10 corridor towards the Suwannee Valley, will once again feel temperatures near/below freezing this evening, while locations in north central FL and along the coast will have Lows in the upper 30s to mid 40s. A majority of the Freeze Watch has been upgraded to a Freeze Warning with this Forecast package. Widespread frost will also be likely as winds begin to drop off during the overnight hours into early Wednesday morning for these locations, with patchy frost possible for those locations bordering the Freeze Warned locations. Short Term - 6am Wednesday Morning Through Thursday Night High pressure ridge will dominate the region on Wednesday but a weak inverted trough will exist off the southeast U.S. coast but any showers associated with the trough will be well offshore. A disturbance will move through the region Wednesday into Thursday helping to increase cloudiness over the region. Some increased chance of light rain over the area Wednesday night into Thursday but for now will maintain silent (10 percent) POPs. Temperatures will rise to be above average during this period with daily high temps rising into the 60s to near 70 Wednesday, and 70s for most area on Thursday. Mid 60s may still be realized on Thursday given some northeast flow. Overnight low temperatures will similarly warm with min temps 40-50 deg Wednesday night and to the mid 40s to the lower 50s by Thursday night. Some patchy fog may develop by Thursday night inland areas. Long Term - Friday Through Tuesday Strong and cold surface high pressure system around 1045 mb will move into the northern Great Plains and the Great Lakes area Fri into Sat., with a frontal boundary moving into the local area Fri night into Saturday morning. A strong upper level disturbance will move into the SW U.S. over the weekend which will help trigger surface low development in the Gulf. This low pressure system is forecast to track across the northeast Gulf near the FL/GA state line later this weekend, and then move east offshore of the southeast U.S. coast Sunday night into early Monday. Another area of low pressure may develop off the coast Sat night and translate northeastward on Sunday. As far temps, above normal Friday, then start to become below normal from north to south over the weekend and into next week. Weather impacts expected to develop on Friday with increasing chance of showers for southeast GA and then begin to spread into northeast FL on Saturday as dynamics ahead of the system begin to increase ascent across the area while low level flow is northeasterly. The main surface low moving east over the Gulf and into north FL (or even south GA) may help shift the initial front back north as a warm front into north central FL on Sunday. Showers/rain should further develop Sunday into Sunday night as a trailing cold front presses down into the region from out of the north. One of the weather concerns is about mixed precipitation for inland southeast GA where some low chance of freezing rain is possible as cold air will reside in place there at times. Latest guidance has backed off on this potential, but we will continue to monitor trends. Model progs and solutions have also varied past 1-2 days, and so there is low confidence on the potential. A lot will depend on the where the surface low pressure system tracks, which also leads to some concerns for t-storm activity over northeast FL. At this time, no t- storms are forecast, but eventually we may need to include isolated t-storm mention on Sunday-Sunday night as instability forecasts have increased. By Monday morning, the surface low should be offshore, based on consensus forecasts, with the trailing cold front into central FL continuing to press south. Overrunning clouds expected Monday with a chilly airmass over the region to start the next week. Another freeze and a hard freeze, for well inland zones, looks likely Monday night as the clouds begin to clear out. Tuesday, mostly clear and high pressure moving into the area but chilly and dry air and another freeze Tuesday night. Marine High pressure over the waters will begin to shift towards the east- northeast tonight with winds shifting to northeasterly. Winds will then gradually weaken on Wednesday and Thursday as high pressure extends its axis across the southeastern states. A few showers will be possible late this week ahead of a cold front that will be entering the southeastern states on Friday. Chances for showers will then increase this weekend as this frontal boundary moves slowly southward across our local waters, providing for strengthening northeasterly winds on Saturday that will shift to northwesterly on Saturday night as this front shifts south of the northeast Florida waters. Rip Currents SE GA Low Wednesday NE FL Moderate Wednesday Fire Weather LOW DAYTIME DISPERSIONS OVER SOUTHEAST GA AND PARTS OF THE - Suwannee Valley Area On Wednesday Dry and unseasonably cool weather will continue rest of today with northerly winds shifting to become more out of the northeast overnight and into Wednesday morning. MinRH values will range within the 20s and 30s rest of today. Another freeze is likely early Wednesday morning, primarily over southeast Georgia and the Suwannee Valley area. A slight increase in moisture and more cloudiness across the area for Wednesday as low level winds shift to become more northeasterly. Areas of low daytime dispersion are forecast for southeast GA and part of the Suwannee Valley area on Wednesday. Potential for low daytime dispersions to continue through the end of the week. There is an increased chance of rain during this upcoming weekend. FOG POTENTIAL AND OTHER REMARKS: Freezing and frost conditions expected inland areas early Wednesday morning. A low potential for some patches of fog early Thursday morning and Friday morning. NOAA Jacksonville FL Office: Watches - Warnings - Advisories FL...Freeze Warning from midnight tonight to 8am EST Wednesday for FLZ021-023-024-120-220-322-422-522. Frost Advisory from 2am to 8am EST Wednesday for FLZ030-031- 035-124-136-225-232-236-237-425. GA...Freeze Warning from midnight tonight to 8am EST Wednesday for GAZ132>136-149-151>153-162-163-165-250-264-350-364. Frost Advisory from 2am to 8am EST Wednesday for GAZ154-166. Marine None.. |
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