Sunrise 6:46 AM   Sunset 8:01 PM Moonrise 7:57 PM   Moonset 5:59 AM

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AMZ450 Coastal Waters From Altamaha Sound To Fernandina Beach Fl Out 20 Nm- Coastal Waters From Fernandina Beach To St. Augustine Fl Out 20 Nm- Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 222 Pm Edt Wed Apr 24 2024
Tonight - South winds 5 to 10 knots. Seas 3 to 4 feet with a dominant period 9 seconds. Intracoastal waters light chop. Thursday - Southwest winds 5 to 10 knots, becoming southeast in the afternoon. Seas around 3 feet with a dominant period 11 seconds. Intracoastal waters light chop. Thursday night - Southeast winds 5 to 10 knots. Seas 2 to 3 feet with a dominant period 11 seconds. Intracoastal waters light chop. Friday - East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet with a dominant period 10 seconds. Intracoastal waters a moderate chop. Friday night - East winds around 15 knots. Seas 3 to 4 feet with a dominant period 7 seconds. Intracoastal waters a moderate chop.Saturday - East winds 10 to 15 knots. Seas 4 to 5 feet with a dominant period 7 seconds. Intracoastal waters a moderate chop. Saturday night - East winds around 15 knots. Seas 4 to 5 feet with a dominant period 7 seconds. Intracoastal waters a moderate chop. Sunday - East winds 10 to 15 knots. Seas 4 to 5 feet. Sunday night - Southeast winds 10 to 15 knots. Seas 4 to 5 feet.Monday - Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Monday night - Southeast winds 5 to 10 knots. Seas 3 to 4 feet.

AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 222 Pm Edt Wed Apr 24 2024
Synopsis -
high pressure will dominate the waters through tonight with a sea breeze developing near shore during the afternoon and evening hours. A weak trough/front will approach the waters on Thursday with high pressure building back in through the remainder of the forecast period. Onshore flow will strengthen Friday and build seas through the weekend.
Gulf stream -
the approximate location of the west wall of the gulf stream as of apr 23, 2024 at 1200 utc - .
60 nautical miles east northeast of flagler beach. 66 nautical miles east of saint augustine beach. 75 nautical miles east of jacksonville beach. 90 nautical miles east southeast of st simons island.
this data courtesy of the naval oceanographic office.

FXUS62 KJAX 250033 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 833 PM EDT Wed Apr 24 2024

New UPDATE

UPDATE
Issued at 827 PM EDT Wed Apr 24 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

Forecast on track with mainly seasonable temps on track under mainly clear skies tonight. Lows in the 50s inland and near 60 along the Atlantic Coast. Enough boundary layer cooling across inland NE FL along the Suwannee River Basin will lead to some patchy fog formation around sunrise Thursday morning, but significant fog is not expected at this time.

NEAR TERM
(through tonight)

Surface high pressure remains dominant while a shortwave dives across the area aloft. Despite the upper disturbance, a very dry airmass aloft (JAX RAOB average a 4% relative in the mid levels)
will continue fair weather conditions overnight. Given the dry airmass and lack of recent rain, fog development is not expected and if any develops it should be very shallow. Temperatures will follow very closely to typical climate values for late April with highs this afternoon in the upper 70s and low 80s and temps tonight falling to the upper 50s inland and low/mid 60s at the coast.

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

SHORT TERM
(Thursday through Friday night)

A weak cold front approaches SE GA Thursday morning and slowly pushes south to the FL/GA line by the evening hours. Conditions look to be too dry to produce any precipitation. Expect clear skies in the morning with increasing cloud coverage in the afternoon. Temperatures will be in the mid to upper 80s inland with coastal temperatures staying slightly cooler.

Friday, the weak cold front shifts north and east a bit so that it drapes across SE GA once again and will dissipate by the evening.
Conditions are still too dry to produce any precipitation. Winds will begin to increase in the afternoon as pressure gradients begin to tighten up between a low pressure out west and the high pressure off the northeast coast. Temperatures inland will be in the mid 80s with temperatures in the low to mid 80s closer to the coast.

LONG TERM
(Saturday through next Wednesday)

Predominantly dry conditions are expected for the forecast period as high pressure ridging at the surface dominate the region.
Winds will be breezy Saturday and Sunday due to tightening pressure gradients and easterly winds. Monday to Thursday, as the high pressure makes its way down the east coast and settles off the coast of the Carolinas, it will allow the seabreeze to make its way well inland each afternoon.

Temperatures for the weekend will be in the low to mid 80s, staying slightly cooler at the coast. Temperatures will steadily increase into the 90s by mid week.

AVIATION
(00Z TAFS)
Issued at 714 PM EDT Wed Apr 24 2024

VFR at all sites with diurnal FEW-SCT 060 cumulus clouds at the moment that will fade after sunset with SKC expected through the night with light winds. The usual patchy MVFR fog expected at VQQ in the 07-11Z time frame, otherwise fog probs too low for inclusion at other TAF sites. Diurnal Cumulus in the 040-060 SCT develops Thursday afternoon along with East Coast sea breeze pushing through SGJ/SSI by 17Z, CRG by 18Z and JAX/VQQ around 19Z, while Gulf Coast sea breeze reaches GNV after 19Z.

MARINE

High pressure will dominate the waters through tonight with a sea breeze developing near shore during the afternoon and evening hours.
A weak trough/front will approach the waters on Thursday with high pressure building back in through the remainder of the forecast period. Onshore flow will strengthen Friday and build seas through the weekend.

Rip Currents: Moderate risk of rip currents will be present through the end of the week with risk increasing to High this weekend as onshore winds and surf increase.

FIRE WEATHER

A high pressure ridge across northeast FL will push southward as a weak frontal boundary begins to move into southeast GA Thursday morning. The front will stall Thursday evening just north of the FL/GA line and dissipate by Friday. Today, minRH values range from 30-35% inland with higher values along the coast. West to southwest winds expected around 5 mph, but breezier southeast winds of 10-15 mph are expected along the coast due to the sea breeze. Thursday, calm variable winds expected with the sea breeze making its way in at the coast from the east to southeast near 10 mph in the afternoon. Friday through the weekend, most locations will see prevailing east to southeast winds at 10-15 mph with patchy high dispersions area wide.

PRELIMINARY POINT TEMPS/POPS
AMG 55 84 59 84 / 0 0 0 10 SSI 61 79 66 78 / 0 10 0 0 JAX 57 85 63 82 / 0 10 0 0 SGJ 58 82 64 82 / 0 10 0 0 GNV 55 86 60 86 / 0 10 0 0 OCF 55 86 60 86 / 0 10 0 0

JAX WATCHES/WARNINGS/ADVISORIES
FL...None.
GA...None.
AM...None.

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Fernandina Beach
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Wed -- 03:46 AM EDT     0.31 feet Low Tide
Wed -- 06:48 AM EDT     Sunrise
Wed -- 06:59 AM EDT     Moonset
Wed -- 09:57 AM EDT     5.89 feet High Tide
Wed -- 03:40 PM EDT     0.31 feet Low Tide
Wed -- 08:00 PM EDT     Sunset
Wed -- 08:56 PM EDT     Moonrise
Wed -- 10:21 PM EDT     6.72 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Fernandina Beach, Amelia River, Florida, Tide feet

St. Johns River Entrance
Click for Map
Wed -- 02:09 AM EDT     -2.12 knots Max Ebb
Wed -- 06:07 AM EDT     0.00 knots Slack
Wed -- 06:48 AM EDT     Sunrise
Wed -- 06:59 AM EDT     Moonset
Wed -- 08:29 AM EDT     1.72 knots Max Flood
Wed -- 11:32 AM EDT     -0.00 knots Slack
Wed -- 02:08 PM EDT     -1.89 knots Max Ebb
Wed -- 05:47 PM EDT     0.00 knots Slack
Wed -- 07:59 PM EDT     Sunset
Wed -- 08:36 PM EDT     2.29 knots Max Flood
Wed -- 08:55 PM EDT     Moonrise
Wed -- 11:52 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

St. Johns River Entrance, Florida Current, knots

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