St. Augustine to Flagler Beach, FL Out 20 NM Marine Forecast
| Tonight...Southeast Winds 5 To 10 Knots. Seas 2 To 3 Feet With A Dominant Period 8 Seconds. Intracoastal Waters Light Chop. |
| Wednesday...East Winds 10 To 15 Knots. Seas 2 To 3 Feet With A Dominant Period 8 Seconds. Intracoastal Waters A Moderate Chop. A Slight Chance Of Showers And Thunderstorms In The Afternoon. |
| Wednesday Night...East Winds 10 To 15 Knots. Seas 2 To 3 Feet With A Dominant Period 7 Seconds. Intracoastal Waters A Moderate Chop. A Slight Chance Of Showers And Thunderstorms. |
| Thursday...Northeast Winds 10 To 15 Knots. Seas 2 To 3 Feet With A Dominant Period 5 Seconds. Intracoastal Waters A Moderate Chop. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Thursday Night...Northeast Winds 10 To 15 Knots. Seas Around 3 Feet With A Dominant Period 5 Seconds. Intracoastal Waters A Moderate Chop. A Slight Chance Of Thunderstorms. A Slight Chance Of Showers In The Evening, Then A Chance Of Showers After Midnight. |
| Friday...Northeast Winds 10 To 15 Knots. Seas Around 3 Feet With A Dominant Period 7 Seconds. Intracoastal Waters A Moderate Chop. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Friday Night...Northeast Winds 10 To 15 Knots. Seas Around 3 Feet With A Dominant Period 5 Seconds. Intracoastal Waters A Moderate Chop. A Chance Of Showers And Thunderstorms. |
| Saturday...Northeast Winds 10 To 15 Knots. Seas Around 3 Feet. A Chance Of Showers And Thunderstorms. |
| Saturday Night...Northeast Winds 10 To 15 Knots, Increasing To 15 To 20 Knots After Midnight. Seas 3 To 4 Feet. A Chance Of Showers And Thunderstorms. |
| Sunday...Northeast Winds 20 To 25 Knots. Seas 5 To 7 Feet. A Chance Of Showers And Thunderstorms. |
| Sunday Night...Northeast Winds 20 To 25 Knots, Diminishing To 15 To 20 Knots After Midnight. Seas 6 To 7 Feet. A Chance Of Showers And Thunderstorms. Winds And Waves Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Jacksonville FL 322pm EDT Tuesday May 30 2023 ...New NEAR TERM, SHORT TERM, LONG TER Marine Near Term Issued at 243pm EDT Tuesday May 30 2023 Prevailing flow will continue to shift about to become more out of the south today as the influence of the forming low pressure system over the Gulf of Mexico extends more influence over the region. Isolated to widely scattered showers with possible isolated thunderstorms will continue to build through the afternoon with convection initially forming along the southeast Georgia coastline and then spreading inland into the later afternoon and early evening hours. Light precipitation is expected to persist over southeast Georgia overnight and into early Wednesday morning. High temperatures for this afternoon will peak in the upper 80s and lower 90s for inland areas and in the lower to mid 80s along the coast. Overnight low temperatures will drop down into the mid to upper 60s for inland areas and in the lower 70s for the shoreline and for areas along the St Johns River. .SHORT TERM... (Wednesday through Thursday night) Issued at 243pm EDT Tuesday May 30 2023 Increased chances for diurnal shower and thunderstorm development before the end of this period with the heaviest amounts of rainfall expected to occur over northeast Florida with moist flow from out of the south bringing increased PWAT (Precipitable Water) levels further up the Florida peninsula by midweek with high end values measuring between 1.75 and 1.95 inches. Flow will shift to become more out of the east before the end of the week as the forming low pressure system extends its influence further eastward into the the forecast area. High temperatures will dip to below average levels with max temps reaching up into the lower to mid 80s. Overnight low temperatures will be in the mid 60s for inland areas and int the lower 70s for coastal locations. Long Term (Friday through next Tuesday) Issued at 243pm EDT Tuesday May 30 2023 Forecast models continue to display a good degree of disparity towards the weather pattern for the end of the week and into the weekend with the ECMWF (European Centre for Medium-Range Weather Forecasts) showing the low pressure cyclone in the gulf strengthening and moving across the lower portion of the Florida peninsula this weekend which could result in widespread showers and storms with gusty winds. The GFS (Global Forecast System) currently shows the low pressure system collapsing with potentially less widespread convective conditions for the weekend. The NHC has announced a that there is a slight chance for the low pressure system to organize into a tropical cyclone this week, however it is still very early in its potential for development. Daily high temperatures for the weekend are expected to trend near and below the seasonal average. Marine Issued at 243pm EDT Tuesday May 30 2023 A weak surface trough will linger across the local waters today. High pressure will strengthen northeast of the region Wednesday, shifting the trough southwest and returning easterly winds over the local waters. Winds increase Thursday as a broad area of low pressure in the Gulf of Mexico approaches south Florida. This low is expected to strengthen offshore of the south Florida Atlantic coast Friday into Saturday, which will increase local winds further with Small Craft conditions possible over portions of the local waters by late Saturday. Rip Currents Moderate Risk for all beaches thru Wednesday. NOAA Jacksonville FL Office: Watches - Warnings - Advisories FL...None. GA...None. AM...None. |
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