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Marine Weather and Tide Forecast for Jacksonville, FL

April 23, 2025 2:47 PM EDT (18:47 UTC) Change Location
Sunrise 6:49 AM   Sunset 8:00 PM
Moonrise 3:10 AM   Moonset 2:37 PM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

Marine Forecasts
   
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NOTE: Zones were updated 3/20/2025
AMZ452 Expires:202504240945;;325907 Fzus52 Kjax 231818 Cwfjax
coastal waters forecast for northeast florida/southeast georgia national weather service jacksonville fl 218 pm edt Wed apr 23 2025
atlantic coastal waters from altamaha sound ga to flagler beach fl out to 60 nm.
seas are provided as a range of the average height of the highest 1/3 of the waves, along with the occasional height of the average highest 1/10 of the waves.
amz450-452-454-240945- 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- 218 pm edt Wed apr 23 2025

Tonight - Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave detail: east 3 feet at 9 seconds and southeast 2 feet at 4 seconds. Intracoastal waters becoming mostly smooth.

Thursday - East winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: east 3 feet at 9 seconds and southeast 2 feet at 5 seconds. Intracoastal waters a light chop.

Thursday night - East winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: east 3 feet at 9 seconds and southeast 2 feet at 5 seconds. Intracoastal waters mostly smooth.

Friday - East winds around 10 knots. Seas 2 to 3 feet. Wave detail: east 3 feet at 9 seconds and southeast 2 feet at 5 seconds. Intracoastal waters a light chop.

Friday night and Saturday - Southeast winds around 10 knots. Seas 2 to 3 feet. Wave detail: east 3 feet at 9 seconds. Intracoastal waters a light chop.

Saturday night - South winds 5 to 10 knots, becoming southwest after midnight. Seas 2 to 3 feet. Wave detail: east 3 feet at 9 seconds. Intracoastal waters mostly smooth. A slight chance of showers and Thunderstorms in the evening.

Sunday - North winds 10 to 15 knots, becoming northeast and increasing to around 15 knots during the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters becoming a moderate chop. A chance of showers with a slight chance of Thunderstorms.

Sunday night and Monday - East northeast winds around 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Intracoastal waters a moderate chop. A chance of showers with a slight chance of Thunderstorms.
winds and waves higher in and near Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 218 Pm Edt Wed Apr 23 2025

Synopsis -
high pressure building to the north of a stalled front will briefly Wedge down the southeastern seaboard on Thursday afternoon, creating breezy onshore winds through Thursday evening. This high pressure center will push offshore of the mid-atlantic and new england coasts on Thursday night ahead of a cold front that will move across the southeastern states on Saturday afternoon and evening. This front may bring scattered showers and Thunderstorms to our local waters from Saturday night through Monday. Strong high pressure building over the great lakes states in the wake of this front during the weekend will shift towards the southeastern seaboard early next week, with winds shifting to northeasterly and strengthening across our local waters by Sunday afternoon, with seas expected to gradually build to caution levels offshore on Sunday night and Monday.

Gulf stream -
the approximate location of the west wall of the gulf stream as of apr 22, 2025 at 1200 utc - .
58 nautical miles east of flagler beach. 66 nautical miles east of saint augustine beach. 75 nautical miles east of jacksonville beach. 99 nautical miles east southeast of st simons island.
this data courtesy of the naval oceanographic office.

7 Day Forecast for Marine Location Near Jacksonville, FL
   
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Tide / Current for Ortega River Entrance, Florida
  
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Ortega River Entrance
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Wed -- 01:00 AM EDT     5.89 feet Low Tide
Wed -- 04:10 AM EDT     Moonrise
Wed -- 06:50 AM EDT     Sunrise
Wed -- 07:22 AM EDT     6.93 feet High Tide
Wed -- 01:50 PM EDT     5.87 feet Low Tide
Wed -- 03:37 PM EDT     Moonset
Wed -- 07:52 PM EDT     6.91 feet High Tide
Wed -- 07:59 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Ortega River Entrance, Florida does not exist in database. Press Edit above and select a valid nearby location.

Ortega River Entrance, Florida, Tide feet
12
am
5.9
1
am
5.9
2
am
5.9
3
am
6
4
am
6.3
5
am
6.6
6
am
6.8
7
am
6.9
8
am
6.9
9
am
6.8
10
am
6.5
11
am
6.2
12
pm
6
1
pm
5.9
2
pm
5.9
3
pm
5.9
4
pm
6.1
5
pm
6.4
6
pm
6.7
7
pm
6.9
8
pm
6.9
9
pm
6.8
10
pm
6.6
11
pm
6.3

Tide / Current for St. Johns River Entrance, Florida Current
  
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St. Johns River Entrance
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Wed -- 01:02 AM EDT     0.00 knots Slack
Wed -- 03:43 AM EDT     1.88 knots Max Flood
Wed -- 04:09 AM EDT     Moonrise
Wed -- 06:49 AM EDT     Sunrise
Wed -- 06:57 AM EDT     -0.00 knots Slack
Wed -- 09:46 AM EDT     -2.03 knots Max Ebb
Wed -- 01:36 PM EDT     0.00 knots Slack
Wed -- 03:35 PM EDT     Moonset
Wed -- 04:17 PM EDT     2.00 knots Max Flood
Wed -- 07:32 PM EDT     -0.00 knots Slack
Wed -- 07:58 PM EDT     Sunset
Wed -- 10:14 PM EDT     -2.06 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, St. Johns River Entrance, Florida Current does not exist in database. Press Edit above and select a valid nearby location.

St. Johns River Entrance, Florida Current, knots
12
am
-0.9
1
am
-0
2
am
0.9
3
am
1.7
4
am
1.9
5
am
1.4
6
am
0.8
7
am
-0
8
am
-1.1
9
am
-1.9
10
am
-2
11
am
-1.8
12
pm
-1.3
1
pm
-0.6
2
pm
0.4
3
pm
1.4
4
pm
2
5
pm
1.8
6
pm
1.3
7
pm
0.5
8
pm
-0.5
9
pm
-1.6
10
pm
-2
11
pm
-1.9

Area Discussion for Jacksonville, FL
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FXUS62 KJAX 231748 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 148 PM EDT Wed Apr 23 2025

New AVIATION

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

AVIATION
(18Z TAFS)
Issued at 149 PM EDT Wed Apr 23 2025

VFR conditions will prevail at the regional terminals through at least 06Z Thursday. Scattered convection that develops early this evening should remain to the west and north of the regional terminals, but a few leftover showers may approach SSI from the west after 01Z this evening. Confidence was too low to include anything other than vicinity showers at SSI at this time. Fog and low stratus ceilings will be possible during the predawn and early morning hours, especially at VQQ and GNV. Confidence was high enough to indicate periods of LIFR conditions overnight at VQQ, with MVFR visibilities possible for a brief time around sunrise at GNV and JAX. Periods of MVFR ceilings will be possible at the SSI, CRG, and SGJ terminals after 13Z through around 16Z Thursday, and a few showers may also develop near these terminals during the early to mid-morning hours on Thursday. Confidence was too low to mention any vicinity coverage at these terminals at this time. East to southeast surface winds will remain sustained at 10-15 knots at the SSI and SGJ coastal terminals through around 01Z this evening. Surface winds at the rest of the terminals will shift to easterly after 18Z, with sustained speeds increasing to around 10 knots by 21Z as the Atlantic sea breeze boundary pushes inland. Surface winds will shift to southeasterly at the coastal terminals after 01Z, with speeds diminishing to around 5 knots by 04Z. Winds will diminish at the inland terminals after 03Z tonight. East-southeasterly winds will increase to the 10-15 knot range by noon on Thursday, with these breezy winds spreading inland during the afternoon hours.

UPDATE
Issued at 1235 PM EDT Wed Apr 23 2025

Early afternoon surface analysis depicts Atlantic high pressure (1029 millibars) centered to the northeast of Bermuda, with this feature extending its axis southwestward across the FL peninsula.
Meanwhile, a weakening frontal boundary was stalling across the Tennessee Valley and the Carolinas
Aloft
ridging has shifted east of the FL peninsula, allowing a more zonal flow pattern developing across the southeastern states. A weak shortwave trough was embedded within this zonal flow pattern across the Deep South, with a stronger shortwave located upstream near the Arklatex region. A healthy cumulus field was developing across our region, with the Atlantic sea breeze boundary already pushing inland towards the I-95 corridor at 16Z, with fair skies in the wake of this boundary at coastal locations. A pocket of slightly thicker cirrostratus was traversing southeast GA early this afternoon, with thin cirrus cloud cover located elsewhere. Inland temperatures have already warmed to the lower 80s at the noon hour, while breezy onshore winds in the wake of the inland moving sea breeze were keeping coastal temperatures in the upper 70s.
Dewpoints were slowly falling through the low and mid 60s at most locations.

Temperatures aloft will cool slightly this afternoon as weak shortwave energy embedded in the developing zonal flow pattern across our area drops southeastward towards our region. Low level southwesterly flow should increase PWAT values to the 1.25 to 1.5 inch range at inland locations this afternoon as mid-level temperatures cool to around -15 degrees Celsius at 500 millibars (around 20,000 feet). However, triggering mechanisms may be tough to identify across our area, as the inland moving Atlantic sea breeze across northeast and north central FL will be dealing with a more subsident air mass. Upstream convection over central AL/GA may send outflows southeastward across the Alapaha/Ocmulgee/Altamaha Rivers by late afternoon or around sunset, but short-term, high resolution models continue to indicate only isolated convection developing for locations west and north of Waycross into the early evening hours. The inland moving Atlantic sea breeze may collide with the Gulf coast sea breeze this evening along the I-10 corridor to the west of U.S.
Highway 301 to create isolated convection, but higher coverage is expected to remain across interior southeast GA. Although bulk southwesterly shear values around 30-35 knots will be modest, colder mid-level temperatures working into our region later today could cause a few storms to pulse and become strong, mainly for locations west and north of Waycross. Downburst winds of 40-50 mph, small hail, and cloud to ground lightning strikes will be the primary hazards with this activity later today through early this evening.

Breezy onshore winds will keep coastal highs close to 80 degrees this afternoon, while temperatures for locations along and west of U.S. Highway 301 will climb to the upper 80s to around 90.
Dewpoints crashing through the lower 60s this afternoon will keep maximum heat index values in check today, with values peaking around 90 at inland locations. Any convection that manages to develop late this afternoon and this evening will dissipate by midnight, with patchy to areas of fog possible towards sunrise, mainly for inland southeast GA. Lows tonight will range from the lower 60s inland to the mid and upper 60s at coastal locations, where a light southeasterly breeze will continue overnight.

SHORT TERM
(Thursday through Friday night)
Issued at 322 AM EDT Wed Apr 23 2025

Seasonably warm conditions will persist through the short-term period, supporting daily chances for afternoon thunderstorms, especially across interior SE GA.

On Thursday, isolated showers may first develop early in the afternoon near a residual surface trough and leftover boundaries from Wednesday's convective episode. Convective coverage is expected to increase west of Waycross late in the day and into the evening as the Gulf and Atlantic sea breezes merge and interact with outflow boundaries pushed out by storms in SW GA. Isolated storms could become strong with additional lift offered by an incoming shortwave.
Meanwhile, convection over NE FL will likely remain limited due to a lack of mid-level moisture. The upper-level impulse crossing Georgia Thursday evening may sustain isolated shower activity through the late night hours across SE GA, although most areas will remain dry.

On Friday, forecast uncertainty increases regarding moisture placement aloft and thus convective coverage. Model guidance trends toward marginal moisture remaining in southeast Georgia, with only isolated storms expected north of Waycross. Northeast Florida will remain drier, with lower rain chances.

By Saturday, moisture availability will still be limited, but isolated showers and perhaps a thunderstorm or two may develop—mainly along and north of the I-10 corridor as the sea breeze progresses inland. A weakening frontal boundary approaching the region late Saturday night may provide additional forcing for showers and storms, potentially into early Sunday morning.

Temperatures will continue to climb, with highs nearing daily record values—reaching the upper 80s to low 90s by Saturday afternoon.
Overnight lows will remain mild, generally in the low to mid-60s.
Patchy inland fog is possible each morning where skies clear overnight.

LONG TERM
(Saturday through Tuesday)
Issued at 322 AM EDT Wed Apr 23 2025

A backdoor cold front associated with high pressure wedging down the Eastern Seaboard will slide into the region on Sunday, helping to pool moisture along the boundary and fueling scattered afternoon storms along the east coast sea breeze.

By Monday, lingering moisture will maintain isolated to scattered storm chances (20–30%) across the area. A drying trend will then take shape on Tuesday as cooler and drier air advects in from the Atlantic behind the departing front.

Temperatures will moderate behind the front, with inland highs falling into the low to mid-80s and coastal areas remaining in the upper 70s.

MARINE
Issued at 1235 PM Wed Apr 23 2025

Atlantic high pressure will continue to extend its axis across our local waters as a weakening frontal boundary stalls across the southeastern states. Another high pressure center building to the north of this stalled front will briefly wedge down the southeastern seaboard on Thursday afternoon, creating breezy onshore winds through Thursday evening. This high pressure center will push offshore of the Mid-Atlantic and New England coasts on Thursday night ahead of a cold front that will move across the southeastern states on Saturday afternoon and evening. This front may bring scattered showers and thunderstorms to our local waters on Saturday night and Sunday. Seas of 2-4 feet will prevail through Sunday morning both near shore and offshore.

Strong high pressure building over the Great Lakes states in the wake of this front during the weekend will shift towards the southeastern seaboard early next week, with winds shifting to northeasterly and strengthening across our local waters by Sunday afternoon, with seas expected to gradually build on Sunday night and Monday. Seas will build to the 3-5 foot range offshore by Sunday afternoon, with Caution conditions possible across our local waters by Sunday night and Monday.

Rip Currents: A persistent easterly ocean swell will combine with breezy onshore winds will keep a lower end moderate risk in place at all area beaches through the upcoming weekend.

FIRE WEATHER
Issued at 1235 PM Wed Apr 23 2025

Scattered showers and thunderstorms are expected to develop late this afternoon and early this evening and again on Thursday afternoon and evening across inland portions of southeast GA and possibly northern portions of the Suwannee Valley. Activity should become isolated across these inland locations on Friday afternoon and evening. Otherwise, increasingly hot temperatures at inland locations will drop minimum relative humidity values to the 30-35 percent range for locations west of I-95 corridor this afternoon and again on Thursday afternoon. Breezy easterly surface and transport winds will overspread the I-95 corridor this afternoon, and fair to good daytime dispersion values are forecast area-wide.
Breezy easterly surface and transport winds will develop during the late morning hours at coastal locations on Thursday, with these winds spreading inland during the afternoon hours, creating mostly good daytime dispersion values across our region. Elevated mixing heights and southeasterly surface and transport winds on Friday will create good daytime dispersion values at most locations on Friday, with marginally high values possible across north central FL.

CLIMATE
Issued at 1235 PM Wed Apr 23 2025

DAILY RECORD HIGHS

WED THU FRI SAT SUN

JAX 92 (1970) 93 (1999) 92 (1958) 92 (2011) 94 (1986)

GNV 92 (1970) 94 (1999) 93 (1896) 93 (1908) 96 (2011)

AMG 94 (1968) 93 (1999) 91 (1958) 93 (1986) 96 (1986)

CRG 89 (2020) 92 (1999) 91 (2006) 91 (1989) 93 (2011)

PRELIMINARY POINT TEMPS/POPS
AMG 62 86 60 86 / 40 30 20 20 SSI 67 81 66 80 / 10 10 0 10 JAX 62 86 61 85 / 10 10 0 10 SGJ 66 81 65 82 / 10 0 0 10 GNV 61 89 60 89 / 20 0 0 10 OCF 61 91 59 90 / 20 0 0 10

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


Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
BKBF1 6 mi48 minE 1.9G2.9 81°F 30.13
JXUF1 7 mi48 min 79°F
NFDF1 9 mi48 minENE 8G8.9 78°F 30.1465°F
DMSF1 11 mi48 min 76°F
BLIF1 12 mi48 minE 8.9G12 80°F 30.16
LTJF1 15 mi48 min 79°F 66°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 17 mi48 minE 8G13 76°F 76°F30.17
FRDF1 - 8720030 - Fernandina Beach, FL 30 mi48 minESE 8.9G13 81°F 76°F30.14
KBMG1 36 mi48 min 76°F 30.15
41112 - Offshore Fernandina Beach, FL (132) 37 mi22 min 74°F2 ft
SAUF1 - St. Augustine, FL 37 mi48 min9.9G11 74°F 30.14
41117 38 mi22 min 77°F2 ft


Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
   
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Weather Map
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GEOS Local Image of southeast  
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Jacksonville, FL,





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