Marine Weather Net

St. Augustine to Flagler Beach, FL 20 - 60 NM Marine Forecast


REST OF TONIGHT

N
WINDS
15 - 20
KNOTS

FRIDAY

N
WINDS
15 - 20
KNOTS

FRIDAY NIGHT

SE
WINDS
5 KNOTS

SATURDAY

S
WINDS
10 - 15
KNOTS

The Marine Weather Forecast In Detail:
AMZ474 Forecast Issued: 830 PM EDT Thu Mar 28 2024

SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT FRIDAY
Rest Of Tonight...North Winds 15 To 20 Knots. Seas 5 To 7 Feet With A Dominant Period 10 Seconds.
Friday...North Winds 15 To 20 Knots, Becoming Northeast 10 To 15 Knots In The Afternoon. Seas 5 To 6 Feet With A Dominant Period 9 Seconds.
Friday Night...Southeast Winds Around 5 Knots, Becoming Southwest After Midnight. Seas 5 To 6 Feet With A Dominant Period 10 Seconds.
Saturday...Southwest Winds 5 To 10 Knots, Becoming South 10 To 15 Knots In The Afternoon. Seas 4 To 5 Feet With A Dominant Period 10 Seconds.
Saturday Night...South Winds 10 To 15 Knots, Becoming Southwest After Midnight. Seas 3 To 4 Feet With A Dominant Period 10 Seconds.
Sunday...West Winds 5 To 10 Knots, Becoming South 10 To 15 Knots In The Afternoon. Seas 3 To 4 Feet With A Dominant Period 10 Seconds.
Sunday Night...Southwest Winds 10 To 15 Knots. Seas 3 To 4 Feet With A Dominant Period 11 Seconds.
Monday...Southwest Winds 5 To 10 Knots, Becoming South 10 To 15 Knots In The Afternoon. Seas 2 To 3 Feet.
Monday Night...Southwest Winds 10 To 15 Knots. Seas 3 To 4 Feet.
Tuesday...Southwest Winds 10 To 15 Knots. Seas 3 To 4 Feet.
Tuesday Night...Southwest Winds 15 To 20 Knots. Seas 3 To 5 Feet. A Slight Chance Of Showers And Thunderstorms After Midnight. Winds And Seas Higher In And Near Thunderstorms.
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Area Forecast Discussion
National Weather Service Jacksonville FL
838pm EDT Thu Mar 28 2024

...New

Issued at 832pm EDT Thu Mar 28 2024

For the latest NE FL and SE GA Daily Key Messages please visit: https://www.weather.gov/media/jax/briefings/nws-jax-briefing.pdf

The pesky thunderstorm that moved across a portion of southeast GA coast and First Coast this afternoon and evening is slowly weakening as of 830 PM, and expected to dissipate over the next 1- 2 hours. Otherwise, no major changes to the forecast as cool and dry advection will continue across the area tonight. Expecting lows generally in the 40s for the interior and low to mid 50s from the St. Johns River towards the coast and for far southern areas.

Near Term
Issued at 147pm EDT Thu Mar 28 2024

For the latest NE FL and SE GA Daily Key Messages please visit: https://www.weather.gov/media/jax/briefings/nws-jax-briefing.pdf

As an upper trough passes over the region this afternoon, there is a slight chance for a shower to develop during the mid to late afternoon hours, with that chance ending in the evening as the system moves offshore. Otherwise, the cloudiness over the eastern counties will gradually decrease during the remainder of the day, with mostly clear skies expected over the forecast area Tonight, as high pressure gradually builds toward the forecast area from the west. Winds will become light during the evening. Current low temperature forecast Tonight looks good, with mid 40s across inland se GA, 45-50 for inland ne FL, and lower 50s immediate coast.

.SHORT TERM... (Friday through Sunday) Issued at 147pm EDT Thu Mar 28 2024

High pressure will settle overhead during the day on Friday. With subsidence under the high, clear skies are expected. Temperatures will be a little below normal though due to weak cold advection following Todays frontal passage. The coolest readings will be near the coast, due to flow across the relatively cooler coastal waters. Water temps along the coast are still running in the 60s.

The high will build more toward the east southeast Friday night through Sunday, with ridging remaining across region. With the ridge more to the east southeast, the flow will come more from the southwest over the weekend. This flow will allow for more passing clouds, and moderating temperatures. After another below normal night Friday night, readings will be above normal for Saturday through Sunday.

Long Term
(Sunday night through next Thursday) Issued at 147pm EDT Thu Mar 28 2024

The high will slowly drift to the southeast through Tuesday, with ridge still extending over region. A cold front will approach from the northwest Tuesday, with clouds increasing ahead of it. Sunday night through Tuesday will remain dry with a gradual increase in cloud cover. Temperatures will continue to run above normal, with Tuesday being the warmest day with strong southwest flow keeping the sea breeze pinned offshore. A few locations over eastern portions of NE FL could touch 90 on Tuesday. Looking back, the last time JAX reached 90 was on 9/25/23. Had a pair of 88 degree days this month. So, if it makes it to 90 Tuesday, will be first time in over 6 months.

Current model timing brings the cold front into inland areas during the night Tuesday night, with precipitation chances extending across the forecast area. The front will then move southeast of area Wednesday afternoon. Showers and thunderstorms are expected to accompany the frontal passage. While much of the better support will be further north, closer to low center, can not rule out potential for strong to severe storms, especially if stronger upper waves pass through the base of accompanying upper trough. Wednesday will be a transition day as far as temperatures, as it may still be an above normal day depending on frontal timing, but will usher in a period of cooler than normal days.

High pressure will build to the northwest Wednesday night through Thursday, with the region drying out. Temperatures will trend a little below normal Thursday.

Marine
Issued at 147pm EDT Thu Mar 28 2024

A wave of low pressure near the Carolina coast Today will move further away from our area Friday while high pressure builds in from the west. The pressure gradient between these features will keep winds in the caution range nearshore, and advisory level offshore through Tonight. As the high builds over the waters Friday into the Weekend, the gradient will substantially weaken, resulting in lighter winds and lower seas. Winds will become more southwesterly Sunday and Monday as the high moves east of the waters.

Rip Currents
Moderate to High through this afternoon, Moderate Friday.

NOAA Jacksonville FL Office: Watches - Warnings - Advisories
FL...None. GA...None. AM...Small Craft Advisory until 7am EDT Friday for AMZ470-472-474.