Fernandina Beach to St. Augustine, FL Out 20 NM Marine Forecast
| Today...Northeast Winds 10 To 15 Knots. Seas 3 To 4 Feet With A Dominant Period 8 Seconds. Intracoastal Waters A Moderate Chop. |
| Tonight...East Winds 10 To 15 Knots. Seas 2 To 4 Feet With A Dominant Period 8 Seconds. Intracoastal Waters A Moderate Chop. |
| Friday...Southeast Winds 10 To 15 Knots. Seas 4 To 6 Feet With A Dominant Period 7 Seconds. Intracoastal Waters A Moderate Chop. |
| 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 10 To 15 Knots. Seas 3 To 4 Feet With A Dominant Period 6 Seconds. Intracoastal Waters A Moderate Chop. A Chance Of Showers With A Slight Chance Of Thunderstorms In The Afternoon. |
| Saturday Night...West 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 In The Evening. |
| Sunday...North Winds Around 10 Knots, Becoming Northeast In The Afternoon. Seas 2 To 3 Feet. |
| Sunday Night...East Winds 5 To 10 Knots. Seas Around 2 Feet. |
| Monday...East Winds 5 To 10 Knots, Becoming Southeast 10 To 15 Knots In The Afternoon. Seas 2 To 3 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Monday Night...Southeast Winds 10 To 15 Knots. Seas 2 To 3 Feet. Winds And Waves Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Jacksonville FL 403am EDT Thu Mar 30 2023 ...SUNNY & WARMER, HIGH RIP CURRENT RISK FOR NE FLBeaches ...New NEAR TERM, SHORT TERM, LONG TERM, Marine IRE WEATHER,Hydrology Near Term Issued at 400am EDT Thu Mar 30 2023 Patchy dense fog will be intermittent through sunrise across inland SE GA where high clouds have cleared and winds have gone near calm. A chilly morning inland where mins will range from the low/mid 40s across inland SE GA and the Suwannee River Valley to the mid/upper 50s toward the Atlantic coast due to warmer onshore flow. Warmer under sunny skies today under lighter ENE winds as surface high pressure builds over the mid-Atlantic coast today, then farther offshore and southward into tonight. Aloft, and upper level ridge will amplify over the eastern GOMEX. Temperatures will moderate back toward normal for highs ranging from the low/mid 70s at the coast to near 80 well inland. Breezy east winds will near 15 mph at the coast and St. Johns River basin with gusts near 20 mph. Tonight winds veer SE with increasing low level moisture. Low temps moderate back near to above climo values ranging from near 50 well inland to near 60 along the coast. Increasing high clouds will spill over the upper ridge and stream across the local area tonight, but there could be enough breaks across NE FL with weaker boundary layer winds under the low level ridge axis for some patchy inland fog development after midnight. .SHORT TERM... (Friday through Saturday night) Issued at 400am EDT Thu Mar 30 2023 Warm and breezy SE flow develops Friday but continued dry conditions with high temps in the 80s across most areas. Cloud cover increases from the west Friday night ahead of an approaching front. Rain chances increase across SE GA and the Suwannee River Valley through the day Saturday. Favorable severe storm ingredients including dynamical forcing (bulk shear 40-50 kts) and instability (MUCAPEs (Convective Available Potential Energy - high values indicate potential for severe weather) 1000-1500 J/kg) coincide with the passage of the RRQ of a 850 mb jet streak around 45-50 kts over SE GA. A few strong to isolated severe storms will be possible into the afternoon, potentially extending down across the Suwannee River Valley. The main threats will be damaging winds and possibly isolated tornadoes. Storm Prediction Center now has SE GA under a Marginal Risk of Severe Storms Saturday (level 1 out of 5). As upper level trough energy lifts well NE of the region into Sat evening, expect the convection will begin to decrease in both coverage and intensity as the front slows its southward progress into NE FL. Precip is expected to push south of the local area after midnight Saturday night trailed by drier conditions. Temperatures will trend above normal through Saturday, with lows cooling back toward near climo values Saturday night for SE GA while warmer lows in the 60s continue for much of NE FL where cloud cover will linger near the departing front. Long Term (Sunday through Wednesday) Issued at 400am EDT Thu Mar 30 2023 Cooler and dry Sunday as high pressure builds quickly north then northeast of region. Monday, the front to the south begins to lift northward as a coastal trough/warm front with an approaching mid level trough. The combination of increased moisture and lift near the front and diurnal heating with the sea breezes could spark some showers or a thunderstorm Monday afternoon and into Monday evening. Mostly dry conditions develop into Tuesday, with a much drier and hotter trend through the end of the week as a stronger upper ridge amplifies across the eastern US. Temps will warm well above climo with highs near 90 inland by Tuesday with low 90s Wed. NBM model spread into next week indicates high confidence of a return to near record warmth. Marine Issued at 400am EDT Thu Mar 30 2023 High pressure will build northeast of the region today and then east of the local waters Friday. Persistent ESE winds will continue elevated seas. Southerly winds increase late Friday into Saturday as a weakening cold front approaches from the west. The front will move south of the local waters late Saturday. High pressure builds north of the region Sunday, then northeast of the waters Monday and Tuesday. Rip Currents A high rip current risk will continue for NE FL beaches through Friday evening due to persistent onshore flow and lingering NE swell around 1-1.5 ft with periods around 10-11 seconds. A moderate rip current risk will continue for SE GA beaches. Fire Weather Issued at 400am EDT Thu Mar 30 2023 Warmer and drier today under sunny skies. ENE winds become breezy at coastal locations through midday with gusts near 25 mph and minimum humidity near 45-55%. Farther inland, easterly winds will be weaker with minimum humidity falling into the 30-40% range. Elevated transport winds and warmer temperatures will create pockets of high dispersion this afternoon across portions of Marion and Putnam counties. Warmer and breezy SE winds develop Friday with high inland dispersion. Minimum humidity will trend around 35-45% inland to 55-60% toward the Atlantic coast. The next front approaches late Saturday with a chance of thunderstorms and wetting rainfall. The higher rain chances are across SE GA. Precipitation is expected to fade in coverage and intensity as the front moves south across NE FL into Saturday night. Extended outlook next week: There is a low chance of spotty rainfall on Monday, then an extended hot and dry period with above normal temperatures is expected Tuesday into Thu next week. Hydrology Issued at 400am EDT Thu Mar 30 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 Friday evening for FLZ124-125-133- 138. GA...None. AM...None. |
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