Fernandina Beach to St. Augustine, FL 20 - 60 NM Marine Forecast
| Rest Of Today...North Winds 10 To 15 Knots. Seas 6 To 7 Feet, Occasionally To 9 Feet. Wave Detail: Northeast 7 Feet At 13 Seconds. |
| Tonight...North Winds 5 To 10 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet. Wave Detail: Northeast 7 Feet At 13 Seconds. |
| Sunday...Northwest Winds 5 To 10 Knots, Becoming West In The Afternoon. Seas 4 To 6 Feet, Occasionally To 8 Feet. Wave Detail: Northeast 6 Feet At 13 Seconds. |
| Sunday Night...Southwest Winds 10 To 15 Knots. Seas 4 To 5 Feet, Occasionally To 6 Feet. Wave Detail: Northeast 5 Feet At 12 Seconds And Southwest 3 Feet At 4 Seconds. |
| Monday And Monday Night...Southwest Winds 10 To 15 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet. Wave Detail: Northeast 4 Feet At 11 Seconds And Southwest 3 Feet At 4 Seconds. |
| Tuesday...Southeast Winds 5 To 10 Knots. Seas 2 To 3 Feet. Wave Detail: South 2 Feet At 4 Seconds And Northeast 2 Feet At 10 Seconds. A Slight Chance Of Showers And Thunderstorms. Winds And Seas Higher In And Near Thunderstorms. |
| Wednesday...Southeast Winds 5 To 10 Knots. Seas 2 To 3 Feet. Wave Detail: South 2 Feet At 4 Seconds And Northeast 2 Feet At 10 Seconds. A Slight Chance Of Showers And Thunderstorms. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Jacksonville FL 220pm EDT Sat September 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 - Nor'easter Conditions Slowly Weaken this Weekend. Moderate to High Rip Current Continues through Sunday. Minor Tidal Flooding this weekend for the St. Johns River - Small Craft Advisories at Offshore Waters through Tonight - Isolated Thunderstorm Activity Returns Mid to Late week Near Term - Through Tonight Main Highligheights through Tonight: - High rip current risk and elevated surf to continue into Tonight - Minor flooding possible the St Johns river with next couple of high tide cycles through this evening A strong low pressure off the mid-Atlantic coast lifts further away to the north as high pressure ridging extends from the Midwest into the southeast US. Drier (PWATs (Precipitable Waters) 0.5-0.7") and cooler airmass persists over the region today under north-northwest flow. After a morning of record low temperatures, highs today will be below seasonable in the upper 70s along the coast to low 80s inland. Tonight, winds decouple inland and calm under mostly clear skies. Overnight lows will fall to the mid-upper 50s inland to low 60s along the coast and St Johns river basin. Despite calm winds and mostly clear skies, airmass appears to be too dry to support fog development tonight. Short Term - Sunday Through Monday Night Main Highligheights This Period (Sunday/Monday): - Minor Tidal Flooding Likely to Continue Within the St. Johns River Basin - Moderate to High Risk of Rip Currents at Atlantic Beaches - Near to Above Normal Temperatures Return Dry northwesterly flow persists aloft late weekend and into Monday which will continue to keep conditions dry as an upper and surface low well to our northeast takes its sweet time pulling away from the US. For Sunday, surface high pressure will remain northwest of the region, with a light west to northwest flow near the surface and a slight sea breeze influence near the coast thanks to abundant sunshine and highs generally in the mid 80s. The flow direction shifts slightly south of west for Monday as high pressure shifts more towards the north of the region, allowing temps to continue to warm as far too much dry air aloft remains in place for any rain/convective potential. Temperatures in the upper 80s will be more common Monday, except for mid 80s near the coast. The only other impact concerns for the short term will be minor tidal flooding in the St. Johns River Basin in susceptible, and at least moderate risk of rip currents at area beaches. Guidance continues to suggest minor nuisance type flooding could continue for both Sunday and Monday at times of high tide, which we will keep an eye on over the coming days for potential extension of the Coastal Flood Advisory. Long Term - Tuesday Through Saturday Main Highligheights This Period (Tuesday through Friday): - Return to Above Normal Temperatures and Increasing Rain Chances Late in the Week Mostly dry conditions continue Tuesday with perhaps just an isolated shower or thunderstorm inland, before more significant changes in the pattern occur mid to late week. High pressure shifts east of the CONUS Wednesday through Friday, returning more of a southeast flow with increasing moisture as well as warmer/above normal temperatures. Daily shower and t'storm chances return gradually with the uptick in moisture, with coverage mainly across northeast FL Wednesday and Thursday before expanding area wide by Friday and into the start of next weekend. Marine Strong low pressure off the mid-Atlantic coast will track further away to the north through the end of the weekend as high pressure builds southward from the eastern Great Lakes into the southeast U.S. As low pressure lifts away, seas will gradually diminish through this evening, ending small craft conditions. High pressure will shift over the region Sunday and Monday with prevailing west to southwest winds, turning southeasterly in the afternoon nearshore from the Atlantic seabreeze circulation. High pressure will shift east of the waters midweek with southerly winds, turning easterly in the afternoon over the nearshore waters from seabreeze circulation. Increasing moisture will bring a return of scattered showers and isolated thunderstorms over the waters by midweek. Rip Currents Breezy north northeasterly winds today, long period swells, and elevated surf heigheights up to 4 to 6 feet will continue high risk of rip currents today. Long period swells will persist through Sunday and continue a high risk of rip currents through the end of the weekend. Fire Weather Over the weekend a dry airmass will push across the area and lower afternoon humidity to at least 25-30% for several inland districts Today, Sunday, and Monday. Surface and transport winds will shift to be more northeasterly Today, with breezy conditions persisting at coastal locations. Fair to good daytime dispersion values are forecast area-wide. Winds will become light and turn westerly on Sunday. Warming temperatures and rising humidity levels are expected through next week with winds favoring the diurnal Atlantic sea breeze regime. Fog Potential...Significant fog formation unlikely the next several days. Tides / Coastal Flooding Astronomical tides will continue rising through the weekend due to the upcoming Full "Harvest" Moon later today. Breezy north to northeasterly onshore winds today will maintain reverse flow within the St Johns river with water slow to drain Sunday into early next week due to lingering high astronomical tides and light winds. Water levels peak during high tide between 1.5 - 2 feet above Mean Higher High Water (MHHW) this weekend into early next week. NOAA Jacksonville FL Office: Watches - Warnings - Advisories FL...High Risk for Rip Currents through Sunday evening for FLZ124-125- 138-233-333. Coastal Flood Advisory until 5am EDT Sunday for FLZ125-132- 137-225-325-633. GA...High Risk for Rip Currents until 2am EDT Sunday for GAZ154-166. Marine Small Craft Advisory until 11pm EDT this evening for AMZ470. Small Craft Advisory until 4am EDT Sunday for AMZ472-474.. |
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