Marine Weather Net

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


TODAY

S
WINDS
10 - 15
KNOTS

TONIGHT

S
WINDS
10 - 15
KNOTS

SUNDAY

S
WINDS
10 - 15
KNOTS

SUNDAY NIGHT

SW
WINDS
10 - 15
KNOTS

The Marine Weather Forecast In Detail:
AMZ474 Forecast Issued: 200 AM EDT Sat Jun 22 2024

Today...South Winds 10 To 15 Knots. Seas 4 To 5 Feet, Occasionally To 6 Feet. Wave Detail: East 5 Feet At 8 Seconds. Thunderstorms Likely. Showers.
Tonight...South Winds 10 To 15 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. Wave Detail: Southeast 4 Feet At 8 Seconds And South 2 Feet At 4 Seconds. Showers With Thunderstorms Likely.
Sunday...South Winds 10 To 15 Knots. Seas Around 3 Feet. Wave Detail: Southeast 3 Feet At 8 Seconds. Showers Likely With A Chance Of Thunderstorms.
Sunday Night...Southwest Winds 10 To 15 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. Wave Detail: South 3 Feet At 4 Seconds And East 3 Feet At 8 Seconds. A Chance Of Showers And Thunderstorms.
Monday...Southwest Winds 10 To 15 Knots. Seas Around 3 Feet. Wave Detail: Southeast 3 Feet At 7 Seconds And Southwest 2 Feet At 4 Seconds. A Chance Of Showers. A Slight Chance Of Thunderstorms In The Morning, Then A Chance Of Thunderstorms In The Afternoon.
Monday Night...Southwest Winds 10 To 15 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. Wave Detail: Southeast 3 Feet At 7 Seconds And Southwest 2 Feet At 4 Seconds. A Chance Of Showers And Thunderstorms.
Tuesday...Southwest Winds 10 To 15 Knots. Seas 2 To 3 Feet. A Chance Of Showers And Thunderstorms. Winds And Seas Higher In And Near Thunderstorms.
Wednesday...Southwest Winds 10 To 15 Knots. Seas 2 To 3 Feet. A Chance Of Showers And Thunderstorms. Winds And Seas Higher In And Near Thunderstorms.
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Area Forecast Discussion
National Weather Service Jacksonville FL
246am EDT Sat Jun 22 2024

...New NEAR TERM, SHORT TERM, LONG TER
Marine
Near Term
Issued at 246am EDT Sat Jun 22 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

Ongoing light showers Saturday morning along the coast will give way to scattered to numerous showers with embedded thunderstorms Saturday afternoon as the tropical airmass, diurnal instability and Atlantic and Gulf coast seabreezes interact. Highs will reach the lower 90s over most of NE FL and inland SE GA, with slightly cooler temperatures near the Georgia coast due to increased cloud cover from the weak tropical low. Activity will linger for a few hours after sunset over northeast Florida, low temperatures will stay mild in the 70s area-wide.

.SHORT TERM... (Sunday through Monday night) Issued at 246am EDT Sat Jun 22 2024

During this period, we'll have an upper ridge of high pressure centered over the western Gulf Coast states, while an upper trough remains stationary just offshore of the FL/GA coastline...with northwest flow aloft over the forecast area. At the surface, we'll have daily sea breeze interactions generating scattered to numerous showers and storms, with greater coverage across NE FL compared to SE GA each day. A warming trend is expected as 850mb temperatures rise from around 18C today to 21-22C Sunday and Monday, likely to translate to above normal high temperatures in the mid 90s inland, near 90 coast Sunday, with mid-upper 90s inland Monday, lower 90s coast...a few locations in interior SE GA could peak around 100 degrees. Afternoon heat index values each day will likely be in the 100-105 range.

Long Term
(Tuesday through Friday) Issued at 246am EDT Sat Jun 22 2024

The upper pattern changes little until Wednesday Night and Thursday when an upper trough digs SE toward our forecast area, with the ECM a bit more intense with trough than the GFS, a reverse of what was shown by models 24hrs earlier. Both models leave behind an upper low over the region, with the ECM positioning it over the forecast area Friday, while the GFS (Global Forecast System) has it over the northern Gulf of Mexico. Regardless, with a moist environment in place, and active sea breezes with above normal inland temps, expecting to see scattered to numerous showers/storms each afternoon.

Above normal high and low temperatures will continue Tuesday and Wednesday...with some areas particularly in interior SE GA seeing high temperatures near 100 degrees.... and with afternoon heat index values of 100-105 each day. Current consensus guidance maintains above normal temperatures right through Friday, but could end up close to normal if the ECM pattern verifies.

Marine
Issued at 246am EDT Sat Jun 22 2024

Strong high pressure to the northeast will weaken and shift towards Bermuda this weekend with decreasing winds and seas with a more typical summer sea breeze-like pattern returning into early next week. Rounds of showers and thunderstorms will continue to develop over our local waters this weekend and into next week as prevailing winds become southerly ahead of a weakening surface trough that will settle over the southeastern states through midweek.

Rip Currents
Moderate rip current risk today for NE FL and SE GA beaches as winds shift more southerly.

NOAA Jacksonville FL Office: Watches - Warnings - Advisories
FL...High Rip Current Risk until 5am EDT early this morning for FLZ124-125-133-138.

GA...High Rip Current Risk until 5am EDT early this morning for GAZ154-166.

AM...None.