Fernandina Beach to St. Augustine, FL 20 - 60 NM Marine Forecast
| Today...North Winds 20 Knots This Morning, Decreasing To 15 To 20 Knots Into The Afternoon. Seas 4 To 6 Feet With A Dominant Period 5 Seconds. Intracoastal Waters Choppy. |
| Tonight...Northeast Winds 10 To 15 Knots. Seas 3 To 5 Feet With A Dominant Period 8 Seconds. Intracoastal Waters A Moderate Chop. |
| Thursday...Northeast Winds 10 To 15 Knots. Seas 3 To 5 Feet With A Dominant Period 9 Seconds. Intracoastal Waters A Moderate Chop. |
| Thursday Night...East Winds 10 To 15 Knots. Seas 3 To 4 Feet With A Dominant Period 8 Seconds. Intracoastal Waters A Moderate Chop. |
| Friday...Southeast Winds 10 To 15 Knots, Increasing To 15 To 20 Knots In The Afternoon. Seas 3 To 5 Feet With A Dominant Period 7 Seconds. Intracoastal Waters Choppy. |
| Friday Night...South Winds 15 To 20 Knots. Seas 4 To 6 Feet With A Dominant Period 6 Seconds. Intracoastal Waters Choppy. |
| Saturday...Southwest Winds 15 To 20 Knots. Seas 3 To 5 Feet. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Saturday Night...West Winds 10 To 15 Knots, Becoming Northwest After Midnight. Seas 2 To 4 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Sunday...North Winds 10 To 15 Knots, Becoming Northeast In The Afternoon. Seas 2 To 3 Feet. |
| Sunday Night...East Winds 5 To 10 Knots. Seas Around 2 Feet. Winds And Waves Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Jacksonville FL 336am EDT Wednesday Mar 29 2023 ...COOLER, BREEZY WITH A HIGH RIP CURRENT RISK FOR NE FL BEACHES... ...New NEAR TERM, SHORT TERM, LONG TERM, Marine IRE WEATHER,Hydrology Near Term Issued at 303am EDT Wednesday Mar 29 2023 Transient early morning fog just ahead of the southward progressing cold front will bring brief visibility restrictions around 1 mile at times, with fog clearing by daybreak across NE FL trailing the frontal passage. There could also be some brief, light sprinkles, otherwise dry conditions will prevail as surface high pressure builds north of the region. Breezy NNE winds will increase trailing the morning frontal passage, with gusts 20-30 mph at times through early afternoon near the coast, then winds weaken into the late afternoon as the pressure gradient relaxes. Passing high cirrus clouds will continue through much of the day under near zonal flow aloft, with some lingering low clouds this morning across NE FL near the departing front and then some low level clouds into the afternoon with onshore flow. High clouds will press east of the area this evening with clearing skies into tonight. High temperatures will range from below climo in the mid 60s to low 70s across SE GA and at the Atlantic coast under cooler onshore flow to the mid/upper 70s which is near climo toward Gainesville/Ocala. Much cooler lows will range from below normal tonight in the mid/upper 40s across inland areas due to the dry low level airmass in place to near climo in the low/mid 50s toward the Atlantic coast under continued onshore flow. .SHORT TERM... (Thursday through Friday night) Issued at 303am EDT Wednesday Mar 29 2023 A warming trend and dry as surface high pressure builds offshore of the mid-Atlantic coast Thursday then the ridge axis extends across the FL peninsula into Friday as an upper level ridge amplifies across the eastern GOMEX northward over eastern CONUS. Locally, temperatures will moderate from highs in the mid 70s to low 80s inland Thu with cooler onshore flow keeping the coast more mild in the low 70s. Temperatures bounce back above normal into the mid/upper 80s to upper 70s at the coast Friday as low level flow veers more SE and heigheights rise under the ridge aloft. Expect daily sea breezes with some diurnally enhanced cumulus by Friday as low level moisture increases. Fog potential returns Friday morning across inland areas under the low level ridge axis. Low temps will moderate form the 50s inland Thu night to the 60s by Friday night under warmer southerly flow ahead of an approaching cold front. Long Term (Saturday through Tuesday) Issued at 303am EDT Wednesday Mar 29 2023 The next chance of thunderstorms returns Saturday ahead of another cold front. The best forcing and moisture will coincide over SE GA, with enough instability to support t'storms. The stronger mid/upper level dynamics lift NNE of the region into Saturday night, with likely a fading pre-frontal band of showers/isolated storms weakening in coverage and intensity as it settles southward across SE GA and into NE FL through early Sunday morning as flow aloft becomes zonal. Mostly dry conditions are expected early next week although a diurnally enhanced shower is possible near the frontal zone Sunday afternoon across NE FL as it settles farther south with additional low shower chances across inland areas Monday and Tuesday across inland areas with sea breeze activity as surface high pressure builds NNE Monday then E of the area into Tuesday. The main weather story next week will be the return to well above normal temperatures as a stronger mid/upper level ridging amplifies across the eastern GOMEX with ensembles showing mid/upper 80s again by Monday with near 90 inland Tuesday. Marine Issued at 303am EDT Wednesday Mar 29 2023 A cold front will move south across the local waters early this morning, trailed by increasing northerly winds to Small Craft Advisory levels north of St Augustine through midday with Small Craft Exercise Caution conditions for the waters south of St. Augustine to Flagler Beach. Winds begin to relax into the afternoon. High pressure will build north of the region today, then to the northeast tonight through Thursday which will bring persistent onshore flow and continue elevated combined seas. The high will build east of the local waters Friday, then southerly winds increase to Small Craft Exercise Caution levels late Friday into Saturday as a front approaches from the west. The front is expected to move south of the local waters late Saturday with a return to northerly winds Sunday as high pressure builds north of the region. Rip Currents Raised a high rip current risk for our NE FL beaches today due to persistent ENE swells 1-2 ft and 11-14 second periods coming with increased onshore flow during Spring Break. Extended the high risk through Thursday for FL beaches as easterly flow persists. Advertised moderate risk for SE GA beaches both today and Thu. Fire Weather Issued at 303am EDT Wednesday Mar 29 2023 A cold front will move south across the area early this morning trailed by cooler and drier northerly flow as high pressure builds north of the region. Breezy NNE winds will near 15 to 20 mph at the coast to 10 to 15 mph inland today with higher gusts. Mostly to partly cloudy skies will clear from north to south into the late afternoon. Despite the cooler conditions, much drier humidity will fall into the 30 to 40% range inland this afternoon to 50-60% toward the Atlantic coast. A chilly night with good humidity recovery is expected. Winds become NE Thursday under sunny skies and warmer temperatures. Gusts near 20 mph will be possible toward the St. Johns River basin and Atlantic coast. Low humidity of 30-40% will continue well inland to 40-50% toward the coast. Dispersion will be elevated across portions of the Ocala NF Thursday afternoon. Hydrology Issued at 303am EDT Wednesday Mar 29 2023 Significant rainfall upstream of the Altamaha and Ocmulgee River basins over recent could result in at least minor river flooding heading into the weekend and early next week. NOAA Jacksonville FL Office: Watches - Warnings - Advisories FL...High Rip Current Risk through Thursday evening for FLZ124-125- 133-138. GA...None. AM...Small Craft Advisory until 1pm EDT this afternoon for AMZ450- 452-470-472. |
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