Altamaha Sound, GA to Fernandina Beach, FL 20 - 60 NM Marine Forecast
| Rest Of Tonight...West Winds 10 To 15 Knots. Seas Around 3 Feet. Wave Detail: Southwest 2 Feet At 4 Seconds And East 2 Feet At 8 Seconds. A Slight Chance Of Showers And Thunderstorms. |
| Sunday...West Winds 10 To 15 Knots, Becoming South In The Afternoon. Seas 2 To 3 Feet. Wave Detail: West 2 Feet At 4 Seconds And East 2 Feet At 8 Seconds. A Slight Chance Of Showers And Thunderstorms In The Morning, Then A Chance Of Showers And Thunderstorms In The Afternoon. |
| Sunday Night...Southwest Winds Around 15 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. Wave Detail: South 3 Feet At 4 Seconds And East 2 Feet At 8 Seconds. Showers And Thunderstorms Likely, Mainly In The Evening. |
| Monday...Northwest Winds 10 To 15 Knots, Becoming North Around 5 Knots In The Afternoon. Seas 2 To 4 Feet, Occasionally To 5 Feet. Wave Detail: West 3 Feet At 4 Seconds And East 2 Feet At 8 Seconds. |
| Monday Night...South Winds Around 5 Knots, Becoming Southwest After Midnight. Seas Around 2 Feet. Wave Detail: East 2 Feet At 8 Seconds. |
| Tuesday And Tuesday Night...Southwest Winds 15 To 20 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. Wave Detail: South 4 Feet At 4 Seconds And East 2 Feet At 8 Seconds. |
| Wednesday...Southwest Winds 15 To 20 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet. A Chance Of Showers And Thunderstorms Through The Night. A Chance Of Showers With A Slight Chance Of Thunderstorms After Midnight. |
| Thursday...Southwest Winds 15 To 20 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet. A Chance Of Showers With A Slight Chance Of Thunderstorms In The Morning, Then Showers Likely With A Chance Of Thunderstorms In The Afternoon. A Chance Of Showers With A Slight Chance Of Thunderstorms Through The Night. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Jacksonville FL 1203am EDT Sunday July 26 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 - Very Hot & Humid Weather Continues Today Heat Index 104-108. Heat Advisories Possible Next Week for Portions of Our Area - Moderate Rip Current Risk Continues at Area Beaches - Scattered to Numerous Afternoon & Evening TStorms Sunday & Mon. Strong Storms, Frequent Lightning Strikes & Locally Heavy Downpours Possible - Isolated to Widely Scattered Afternoon & Evening TStorms Tues & Wed Near Term - Through Tonight Main Highligheights through Tonight: - Strong Storms and Locally Heavy Downpours This Afternoon and Early Evening from I-95 to US Highway 301 Corridors - Still Hot and Humid with Heat Indices of 104-108F this afternoon West to Northwest steering flow along with PWATs (Precipitable Waters) of 2 inches or more will support numerous to widespread showers and storms this afternoon and early evening, mainly from the I-95 corridor westward to the US-301 highway corridor as convection interacts with an inland moving East Coast sea breeze. Isolated strong to severe storms are expected with gusty winds to 40-60 mph, along with a localized flood threat due to slow moving and merging storms, with highest impacts in urban areas along the I-95 corridor. Prior to the onset of convection, Max temps still expected to reach the middle 90s in most locations by the early to mid afternoon hours, with peak heat indices in the 104-108F range, with highest values across coastal NE FL counties, but for now will hold off on Heat Advisory headlines, as lingering cloud cover this morning and slightly earlier start to convection this afternoon should prevent long durations of any brief Heat Advisory criteria today. Convection should begin to fade around sunset this evening and end by midnight with fair skies and humid conditions overnight with lows generally in the 70s, except near 80F near the Atlantic Coast. Some low level convergence along the NE Gulf Coast towards morning may produce some isolated showers and storms, which could push into portions of Gilchrist/Alachua/Marion counties at times. Short Term - Monday Through Tuesday Night Main Highligheights This Period: - Thunderstorm chances will be lower than normal, but storms which do develop will have the potential to become strong - Heat Advisories may be needed for Monday and Tuesday afternoons The region will be between a high pressure ridge to the south and a trough to the north Monday through Tuesday. A stronger front will move toward SE GA Tuesday night. Without larger scale features close enough, sea breeze interactions will be the main driver for afternoon convection each day, but a drier airmass will be in place, limiting convective potential. Temperatures will trend above average this period. Long Term - Wednesday Through Saturday Main Highligheights This Period: - Above average chances for diurnal thunderstorms this period, with potential for strong storms each afternoon and evening - Heat Advisory may be needed Wednesday A frontal zone will be stalled near the GA/FL line throughout this period. The combination of convergence along this boundary, ample moisture, and diurnal instability, will lead to above average convective chances during the afternoon and evenings this period. The warmest day this period will be Wednesday, when a heat advisory may be needed. The rest of the week will see temperatures trend near to a little above average. Marine A stationary frontal boundary extending from the Carolina coast westward across the deep south will drift south towards the Georgia waters Today, pushing the axis of Atlantic high pressure southward. This change in the weather pattern will create a prevailing offshore wind flow through early next week, with scattered to numerous afternoon and evening thunderstorms expected across our local waters each day. A few stronger storms will be possible during the late afternoon hours, with briefly strong wind gusts, frequent lightning strikes and torrential downpours. Another front will approach the waters by the middle of next week with offshore southwest winds increasing to near advisory levels. Rip Currents A moderate risk of rip currents is expected today and Monday at Northeast FL and Southeast GA beaches due to afternoon sea breeze and surf/breakers around 2 feet or so. Fire Weather - Heat Advisories may be needed Monday through Wednesday - Patchy high dispersions Today, Wednesday and Thursday The region will be between high pressure to the south and a boundary to the north through Tuesday. A frontal boundary will move into the region and stall Wednesday through the end of next week. Fog Potential and Other Remarks: Significant fog development is not expected during the next several mornings. Heat Advisories may be needed Tuesday and Wednesday afternoons. Daily thunderstorm potential this week, which may become strong. Gusty and erratic winds can be expected in and near storms. NOAA Jacksonville FL Office: Watches - Warnings - Advisories FL...None. GA...None. Marine None. |
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