Altamaha Sound, GA to Fernandina Beach, FL 20 - 60 NM Marine Forecast
| Rest Of Tonight...Southwest Winds 10 To 15 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. Wave Detail: South 4 Feet At 5 Seconds. |
| Friday...Southwest Winds 5 To 10 Knots, Becoming East In The Afternoon. Seas 2 To 3 Feet. Wave Detail: South 2 Feet At 5 Seconds. A Slight Chance Of Showers In The Morning, Then A Chance Of Showers In The Afternoon. |
| Friday Night...Southeast Winds Around 10 Knots, Becoming West After Midnight. Seas Around 2 Feet. Wave Detail: Southeast 2 Feet At 5 Seconds. Showers. A Slight Chance Of Thunderstorms After Midnight. |
| Saturday...North Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: Northeast 3 Feet At 6 Seconds And Southwest 2 Feet At 4 Seconds. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Saturday Night...North Winds 10 To 15 Knots. Seas Around 3 Feet. Wave Detail: Northeast 3 Feet At 6 Seconds. A Chance Of Showers With A Slight Chance Of Thunderstorms In The Evening, Then A Slight Chance Of Showers After Midnight. |
| Sunday And Sunday Night...East Winds 10 To 15 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. Wave Detail: Northeast 4 Feet At 6 Seconds. A Slight Chance Of Showers. |
| Monday...East Winds 15 To 20 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet. A Slight Chance Of Showers In The Morning, Then A Chance Of Showers. |
| Tuesday...East Winds 15 To 20 Knots. Seas 6 To 8 Feet, Occasionally To 10 Feet, Building To 7 To 10 Feet, Occasionally To 13 Feet. A Chance Of Showers. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Jacksonville FL 738pm EST Thu Feb 26 2026 No major updates to the forecast. The mean low level flow remains southwesterly with a mid level trough digging into the southeast CONUS tonight and Friday. This should encourage further lift across the northern zones into Friday morning. PWATs (Precipitable Waters) are near 1.2 inches over north zones, and increase to about 1.4 inches by sunrise. Numerous showers, with isolated t-stroms, are currently over north central and central GA. Have adjusted POPS slightly up in the update based on latest HRRR (High-Resolution Rapid Refresh) guidance and NBM, and continued to mention a low chance of a thunderstorm mainly north of Waycross where MUCAPE of a few hundred joules are forecast by the 5-7AM time frame. Otherwise, some patchy fog, locally dense at times, expected over north central FL by early Friday morning. .NEAR TERM /UNTIL 7am FRIDAY MORNING/... High pressure ridging affecting the forecast area will very gradually shift further southward as a moist southwesterly flow building ahead of an approaching cold front, pressing in from out of the north, forms over the region bringing increased chances for light showers over southeast Georgia and northeast Florida, becoming more widespread overnight and into Friday morning. Above average temperatures throughout the forecast area through today and tonight with daily high temps reaching up into the mid to upper 70s and overnight min temps dropping down into the upper 50s. .SHORT TERM /7am FRIDAY MORNING THROUGH SATURDAY NIGHT/... Main Highligheights During the Period: - Shower and thunderstorm chances through Saturday, with a few strong storms possible. Shower and t'storm chances pick up from north to south throughout the day Friday and into Friday Night as a frontal boundary slowly nudges south and eastward. The front moves slow enough by Friday Night that the feature almost stalls over northeast FL, which will help to maintain periods of showers and result in more beneficial rainfall for the region. As for during the day Friday, expecting interior GA to feature the most "washout" type of rainfall, with this same area also having the best chances for thunderstorms Friday Afternoon and Evening with the best diurnal heating. Any strong/severe chances are low at this time, though an isolated strong storm can't be ruled out with gusts around 40-50 mph looking like the main hazard. With the numerous showers/storms and the front clearing southeast GA during the day Friday, this will result in a modest temperature gradient Friday: Highs will rise into the upper 70s to low 80s in the warm sector from the I-10 corridor southward, with low to mid 70s over parts of inland GA and even some upper 60s possible over far interior GA. The front will be located over southern counties of northeast FL on Saturday Morning, continuing to nudge southward throughout the day before dropping well south of the region Saturday Night. Chances for showers and isolated thunderstorms persist Saturday mainly south of about SR 20 in FL, though a few showers are possible through the afternoon hours as far north as about I-10 or areas just to the north of I-10 depending on the exact progression of the front. Weak drier high pressure builds in from the north Saturday Night which will result in more of an onshore northeasterly flow as compared to a northwest flow, as compared to a stronger northwest cold air advection that has been following frontal passages this winter. As a result, both high temps Saturday and low temps Saturday Night will be cool but still fairly close to normal values: Mid to upper 70s will be expected for highs Saturday except for some mid 60s to near 70 closer to the immediate coast. Upper 50s to low 50s are forecast Saturday Night inland and over southeast GA, and mid 50s near the St. Johns River Basin and NE FL coast. Long Term - Sunday Through Thursday Main Highligheights During the Period: - Chances for coastal showers next week and a persistent onshore flow Weak high pressure north of the region will be the main synoptic feature on Sunday before ridging gets reinforced on Monday as a dry front moves through the area. Onshore flow and coastal showers will be likely for at least the Sunday through Tuesday time frame as an inverted trough also develops east of the Florida Peninsula. Onshore flow looks to break down around mid next week however as the inverted trough weakens and dissipates and high pressure to the north shifts more northeast or east of the region. More onshore flow will keep coastal areas near or below climo for most of the long term, while inland areas will be near to above average overall. Marine High pressure centered offshore of the southeastern seaboard will continue to extend its axis westward across the Florida peninsula through tonight. Meanwhile, a cold front stretches across the Tennessee Valley and will push into the southeastern states tonight. Showers and a few thunderstorms will increase in coverage across our local waters Friday through Saturday as the front slowly moves across our area. Activity will then exit the northeast Florida waters on Saturday night as the frontal boundary shifts southward over the Florida peninsula. High pressure building over the southeastern states in the wake of this frontal passage will create a prevailing north- northeast wind this weekend. An extended period of breezy onshore winds are then expected next week as a series of strong high pressure centers migrate eastward across New England then offshore of the U.S. eastern seaboard, with these features wedging down the southeastern seaboard. Coastal troughing developing over our local waters early next week will generate rounds of scattered showers and possibly a few embedded thunderstorms. Rip Currents A long period east-northeasterly ocean swell will persist today before fading overnight, keeping a moderate risk in place at all area beaches. A low risk is then expected on Friday and Saturday due to light winds and lower swell periods, with a moderate risk returning by Sunday and Monday due to gradually strengthening onshore winds that will continue through all of next week. Fire Weather - Areas Of Low Dispersions Over Southeast GA Friday - Areas Of Low Dispersions Area Wide Saturday More moist southwesterly flow continues today and through Friday Morning ahead of an approaching front. This front will move through Friday Night and Saturday, bringing much needed rainfall to the area. Isolated thunderstorms will also be possible as the front moves through, primarily Friday Afternoon through Friday Night north of about I-10 and Friday Night through Saturday Afternoon south of I- 10. Areas of high dispersions will be found area wide today and over northeast FL on Friday, which will quickly drop as weak ridging builds behind the front Friday Night and Saturday and shifts the flow more northeast to easterly. Onshore flow is likely to continue into early next week, with chances for showers closer to the coasts. FOG POTENTIAL AND OTHER REMARKS: Significant fog is not expected over the next several mornings, though patchy fog is possible closer to the I-75 corridor Friday Morning. Thunderstorms are in the forecast for late Tonight through Saturday, and a few strong storms will be possible, with the greatest chance over SE GA on Friday. NOAA Jacksonville FL Office: Watches - Warnings - Advisories FL...None. GA...None. Marine None.. |
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