Marine Weather and Tide Forecast for Green Cove Springs, FL
September 23, 2023 11:04 AM EDT (15:04 UTC)
Sunrise 7:14AM Sunset 7:23PM Moonrise 2:29PM Moonset 12:00AM
AMZ452 Coastal Waters From Fernandina Beach To St. Augustine Fl Out 20 Nm- Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 1009 Am Edt Sat Sep 23 2023
.small craft advisory in effect until 3 pm edt this afternoon...
Rest of today..Northwest winds 10 to 15 knots, becoming northeast knots in the afternoon. Seas 5 to 7 feet with a dominant period of 13 seconds. Intracoastal waters a light chop.
Tonight..Southeast winds around 10 knots, becoming south after midnight. Seas 4 to 6 feet with a dominant period of 11 seconds, subsiding to 3 to 4 feet with a dominant period of 11 seconds after midnight. Intracoastal waters a light chop.
Sunday..Southwest winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet with a dominant period of 9 seconds. Intracoastal waters a light chop.
Sunday night..South winds 10 to 15 knots. Seas 2 to 3 feet with a dominant period of 9 seconds. Intracoastal waters a light chop.
Monday..East winds around 10 knots. Seas 2 to 3 feet with a dominant period of 8 seconds. Intracoastal waters a light chop. A chance of showers and Thunderstorms in the afternoon.
Monday night..Southeast winds around 10 knots. Seas 2 to 3 feet with a dominant period of 8 seconds. Intracoastal waters a light chop. A chance of showers and Thunderstorms, mainly in the evening.
Tuesday..East winds around 10 knots, becoming northeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Showers likely with a chance of Thunderstorms.
Tuesday night..East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas around 3 feet. Showers likely with a slight chance of Thunderstorms.
Wednesday and Wednesday night..Northeast winds 10 to 15 knots. Seas 3 to 4 feet. Showers likely with a slight chance of Thunderstorms.
winds and waves higher in and near Thunderstorms.
.small craft advisory in effect until 3 pm edt this afternoon...
Rest of today..Northwest winds 10 to 15 knots, becoming northeast knots in the afternoon. Seas 5 to 7 feet with a dominant period of 13 seconds. Intracoastal waters a light chop.
Tonight..Southeast winds around 10 knots, becoming south after midnight. Seas 4 to 6 feet with a dominant period of 11 seconds, subsiding to 3 to 4 feet with a dominant period of 11 seconds after midnight. Intracoastal waters a light chop.
Sunday..Southwest winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet with a dominant period of 9 seconds. Intracoastal waters a light chop.
Sunday night..South winds 10 to 15 knots. Seas 2 to 3 feet with a dominant period of 9 seconds. Intracoastal waters a light chop.
Monday..East winds around 10 knots. Seas 2 to 3 feet with a dominant period of 8 seconds. Intracoastal waters a light chop. A chance of showers and Thunderstorms in the afternoon.
Monday night..Southeast winds around 10 knots. Seas 2 to 3 feet with a dominant period of 8 seconds. Intracoastal waters a light chop. A chance of showers and Thunderstorms, mainly in the evening.
Tuesday..East winds around 10 knots, becoming northeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Showers likely with a chance of Thunderstorms.
Tuesday night..East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas around 3 feet. Showers likely with a slight chance of Thunderstorms.
Wednesday and Wednesday night..Northeast winds 10 to 15 knots. Seas 3 to 4 feet. Showers likely 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- 1009 Am Edt Sat Sep 23 2023
Synopsis..
elevated and rough seas will continue into this evening as tropical storm ophelia continues moving inland across eastern portions of north carolina and virginia. Otherwise, weak high pressure will build over our region through Sunday night, while a surface trough lifts slowly northward from the florida peninsula. Winds and seas will diminish across our local waters tonight and Sunday. Showers and Thunderstorms will gradually increase from south to north from Monday afternoon into Tuesday as this weak trough lifts northward over the northeast florida waters. Otherwise, strong high pressure building southward from quebec and new england will Wedge down the southeastern seaboard beginning on Tuesday evening, resulting in an extended period of breezy onshore winds and building seas across our local waters. A coastal trough will take shape over our near shore waters by midweek, keeping numerous showers and embedded Thunderstorms in the forecast through at least Friday.
Gulf stream..
the approximate location of the west wall of the gulf stream as of sep 19, 2023 at 1200 utc...
52 nautical miles east southeast of flagler beach. 61 nautical miles east of saint augustine beach. 68 nautical miles east of jacksonville beach. 87 nautical miles east southeast of st simons island.
this data courtesy of the naval oceanographic office.
Synopsis..
elevated and rough seas will continue into this evening as tropical storm ophelia continues moving inland across eastern portions of north carolina and virginia. Otherwise, weak high pressure will build over our region through Sunday night, while a surface trough lifts slowly northward from the florida peninsula. Winds and seas will diminish across our local waters tonight and Sunday. Showers and Thunderstorms will gradually increase from south to north from Monday afternoon into Tuesday as this weak trough lifts northward over the northeast florida waters. Otherwise, strong high pressure building southward from quebec and new england will Wedge down the southeastern seaboard beginning on Tuesday evening, resulting in an extended period of breezy onshore winds and building seas across our local waters. A coastal trough will take shape over our near shore waters by midweek, keeping numerous showers and embedded Thunderstorms in the forecast through at least Friday.
Gulf stream..
the approximate location of the west wall of the gulf stream as of sep 19, 2023 at 1200 utc...
52 nautical miles east southeast of flagler beach. 61 nautical miles east of saint augustine beach. 68 nautical miles east of jacksonville beach. 87 nautical miles east southeast of st simons island.
this data courtesy of the naval oceanographic office.
Area Discussion for - Jacksonville, FL
(on/off) HelpNOTE: mouseover dotted underlined text for definition
FXUS62 KJAX 231205 AFDJAX
Area Forecast Discussion National Weather Service Jacksonville FL 805 AM EDT Sat Sep 23 2023
New AVIATION
AVIATION
(12Z TAFS)
Issued at 804 AM EDT Sat Sep 23 2023
VFR conditions will prevail at the regional terminals.
Northwesterly surface winds of 5-10 knots will prevail at the terminals through at least 18Z. The Atlantic sea breeze will develop along the coast early this afternoon and will then push inland, resulting in surface winds shifting to onshore and increasing to around 10 knots before 19Z at the SSI and SGJ coastal terminals, with this wind shift reaching the inland terminals before sunset. Surface winds will then veer to southerly early this evening before diminishing at the inland terminals towards midnight.
SYNOPSIS
Issued at 352 AM EDT Sat Sep 23 2023
TS Ophelia will move through eastern portions of NC early this morning which leaves our area in a deep northwesterly flow and dry conditions. PWAT are now firmly below 1 inch over the entire forecast area, and weak sfc high pres is over the region. The sfc ridge axis extends from weak high pres over TN around 1016 to north FL. Cooler sfc temps compared to last night by 5-10 deg.
Winds are light northwest or calm with clear skies.
NEAR TERM
Through Tonight...
Issued at 352 AM EDT Sat Sep 23 2023
Ophelia lifts northward today and a weak trough will extend across SC and central GA later in the day, while weak high pres ridge moves toward the north central/easter GOMEX. This will result in the mean layer northwest flow to shift more northwest- west and will decrease by mid to late aftn. PWATS will remain near and mostly below 1 inch and model soundings show mostly clear or clear skies continuing with just some high clouds at times north zones. So should be another warm day and low humidity around 35-40 percent, with highs in the mid to upper 80s, and because the Atlantic sea breeze will move into the coast, beaches will see max temps around the mid 80s as well.
Tonight, mid to upper level trough extending across the area will begin to shift to the northwest as high pres aloft builds in behind Ophelia. Again, skies clear except for some occasional high clouds. Min temps will again be mostly in the lower to mid 60s with light to calm winds expected.
SHORT TERM
(Sunday through Monday night)
Issued at 352 AM EDT Sat Sep 23 2023
Dry conditions will continue into Sunday as surface ridging is in place and we start the day with PWATs less than an inch area wide. PWATs and mean moisture does tend to slowly creep up through Sunday as a stalled front south of southern Florida begins to lift northward. A shower and perhaps a rumble of thunder can't be completely ruled out over southern areas Sunday evening, and near the coast overnight into Monday morning. Though for now, have left out POP chances almost entirely through at least dawn on Monday.
The light flow will allow a sea breeze to push inland late morning and into the afternoon, though this should only bring some diurnal clouds with it ahead of the boundary.
By Monday, the front will continue to creep north and make into to central Florida by that same evening. The presence of the boundary, combined with increasing mean moisture and a diurnal sea breeze, will return chances for showers and t'storms, specifically south of I-10 as some drier air aloft should linger into southeast GA.
Temps will rebound for Sunday and into Monday as the aforementioned boundary lifts north, which will result in values slightly above average over the area.
LONG TERM
(Tuesday through Saturday)
Issued at 352 AM EDT Sat Sep 23 2023
The boundary stalls over Central Florida Tuesday as a surface ridge builds southward, along most of the southeastern seaboard and into north FL. Although generally split and lacking some agreement, long range guidance continues to suggest a longwave trough/upper low feature moving into much of the eastern US by mid to late next week, and slowly taking its time moving out of this same area. This would keep a front/trough stalled across Florida through at least mid week and possibly into late week pending how this pattern evolves, and therefore keep an active wet pattern across the CWA. This would also keep temps near to slightly below climo with a wetter pattern. Although not looking significant at this time, this type of "ridge and stalled boundary" pattern would likely induce a northeasterly wind-like event offshore as well, especially if any offshore low/trough development occurs as the upper trough approaches the coast. Of course, to be monitored over the coming days...
MARINE
Issued at 352 AM EDT Sat Sep 23 2023
Elevated seas will persist today with Small Craft Advisory (SCA)
continuing for most waters, but does look like the seas are dropping a bit faster than previously forecast. Thus, the SCA is dropped for the GA nearshore waters, and anticipate the SCA for the northeast FL waters could be dropped slightly sooner than 3 PM as well, and for the offshore waters possibly before the current 8 PM this evening. Otherwise, the north-northwest winds will be decreasing today and become around 5-10 kt tonight through Sunday night. Relatively light winds and lowering seas Sunday into Monday, and then likely gradually increasing again Tue-Wed as high pressure ridge builds north of the area and an inverted trough develops near or east of the area waters mid to late week.
Rip Currents: Elevated surf and rip current channels from the Thursday's through Friday's rough surf will support another high rip current risk day. Risk will slowly diminish on Sunday and Monday.
PRELIMINARY POINT TEMPS/POPS
AMG 85 61 90 64 / 0 0 0 0 SSI 87 68 88 72 / 0 0 0 0 JAX 87 63 91 68 / 0 0 0 0 SGJ 86 66 89 72 / 0 0 10 10 GNV 88 63 91 68 / 0 0 0 0 OCF 87 64 90 69 / 0 0 10 10
JAX WATCHES/WARNINGS/ADVISORIES
FL...High Rip Current Risk through late tonight for FLZ124-125-133- 138.
GA...High Rip Current Risk through late tonight for GAZ154-166.
AM...Small Craft Advisory until 3 PM EDT this afternoon for AMZ452- 454.
Small Craft Advisory until 8 PM EDT this evening for AMZ470-472- 474.
Area Forecast Discussion National Weather Service Jacksonville FL 805 AM EDT Sat Sep 23 2023
New AVIATION
AVIATION
(12Z TAFS)
Issued at 804 AM EDT Sat Sep 23 2023
VFR conditions will prevail at the regional terminals.
Northwesterly surface winds of 5-10 knots will prevail at the terminals through at least 18Z. The Atlantic sea breeze will develop along the coast early this afternoon and will then push inland, resulting in surface winds shifting to onshore and increasing to around 10 knots before 19Z at the SSI and SGJ coastal terminals, with this wind shift reaching the inland terminals before sunset. Surface winds will then veer to southerly early this evening before diminishing at the inland terminals towards midnight.
SYNOPSIS
Issued at 352 AM EDT Sat Sep 23 2023
TS Ophelia will move through eastern portions of NC early this morning which leaves our area in a deep northwesterly flow and dry conditions. PWAT are now firmly below 1 inch over the entire forecast area, and weak sfc high pres is over the region. The sfc ridge axis extends from weak high pres over TN around 1016 to north FL. Cooler sfc temps compared to last night by 5-10 deg.
Winds are light northwest or calm with clear skies.
NEAR TERM
Through Tonight...
Issued at 352 AM EDT Sat Sep 23 2023
Ophelia lifts northward today and a weak trough will extend across SC and central GA later in the day, while weak high pres ridge moves toward the north central/easter GOMEX. This will result in the mean layer northwest flow to shift more northwest- west and will decrease by mid to late aftn. PWATS will remain near and mostly below 1 inch and model soundings show mostly clear or clear skies continuing with just some high clouds at times north zones. So should be another warm day and low humidity around 35-40 percent, with highs in the mid to upper 80s, and because the Atlantic sea breeze will move into the coast, beaches will see max temps around the mid 80s as well.
Tonight, mid to upper level trough extending across the area will begin to shift to the northwest as high pres aloft builds in behind Ophelia. Again, skies clear except for some occasional high clouds. Min temps will again be mostly in the lower to mid 60s with light to calm winds expected.
SHORT TERM
(Sunday through Monday night)
Issued at 352 AM EDT Sat Sep 23 2023
Dry conditions will continue into Sunday as surface ridging is in place and we start the day with PWATs less than an inch area wide. PWATs and mean moisture does tend to slowly creep up through Sunday as a stalled front south of southern Florida begins to lift northward. A shower and perhaps a rumble of thunder can't be completely ruled out over southern areas Sunday evening, and near the coast overnight into Monday morning. Though for now, have left out POP chances almost entirely through at least dawn on Monday.
The light flow will allow a sea breeze to push inland late morning and into the afternoon, though this should only bring some diurnal clouds with it ahead of the boundary.
By Monday, the front will continue to creep north and make into to central Florida by that same evening. The presence of the boundary, combined with increasing mean moisture and a diurnal sea breeze, will return chances for showers and t'storms, specifically south of I-10 as some drier air aloft should linger into southeast GA.
Temps will rebound for Sunday and into Monday as the aforementioned boundary lifts north, which will result in values slightly above average over the area.
LONG TERM
(Tuesday through Saturday)
Issued at 352 AM EDT Sat Sep 23 2023
The boundary stalls over Central Florida Tuesday as a surface ridge builds southward, along most of the southeastern seaboard and into north FL. Although generally split and lacking some agreement, long range guidance continues to suggest a longwave trough/upper low feature moving into much of the eastern US by mid to late next week, and slowly taking its time moving out of this same area. This would keep a front/trough stalled across Florida through at least mid week and possibly into late week pending how this pattern evolves, and therefore keep an active wet pattern across the CWA. This would also keep temps near to slightly below climo with a wetter pattern. Although not looking significant at this time, this type of "ridge and stalled boundary" pattern would likely induce a northeasterly wind-like event offshore as well, especially if any offshore low/trough development occurs as the upper trough approaches the coast. Of course, to be monitored over the coming days...
MARINE
Issued at 352 AM EDT Sat Sep 23 2023
Elevated seas will persist today with Small Craft Advisory (SCA)
continuing for most waters, but does look like the seas are dropping a bit faster than previously forecast. Thus, the SCA is dropped for the GA nearshore waters, and anticipate the SCA for the northeast FL waters could be dropped slightly sooner than 3 PM as well, and for the offshore waters possibly before the current 8 PM this evening. Otherwise, the north-northwest winds will be decreasing today and become around 5-10 kt tonight through Sunday night. Relatively light winds and lowering seas Sunday into Monday, and then likely gradually increasing again Tue-Wed as high pressure ridge builds north of the area and an inverted trough develops near or east of the area waters mid to late week.
Rip Currents: Elevated surf and rip current channels from the Thursday's through Friday's rough surf will support another high rip current risk day. Risk will slowly diminish on Sunday and Monday.
PRELIMINARY POINT TEMPS/POPS
AMG 85 61 90 64 / 0 0 0 0 SSI 87 68 88 72 / 0 0 0 0 JAX 87 63 91 68 / 0 0 0 0 SGJ 86 66 89 72 / 0 0 10 10 GNV 88 63 91 68 / 0 0 0 0 OCF 87 64 90 69 / 0 0 10 10
JAX WATCHES/WARNINGS/ADVISORIES
FL...High Rip Current Risk through late tonight for FLZ124-125-133- 138.
GA...High Rip Current Risk through late tonight for GAZ154-166.
AM...Small Craft Advisory until 3 PM EDT this afternoon for AMZ452- 454.
Small Craft Advisory until 8 PM EDT this evening for AMZ470-472- 474.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| BKBF1 | 14 mi | 47 min | NNW 6G | 74°F | 29.94 | |||
| SAUF1 - St. Augustine, FL | 23 mi | 65 min | NNW 6G | 74°F | 82°F | 29.95 | 63°F | |
| JXUF1 | 25 mi | 47 min | 81°F | |||||
| DMSF1 | 28 mi | 47 min | 82°F | |||||
| NFDF1 | 28 mi | 47 min | S 1.9G | 76°F | 29.95 | |||
| BLIF1 | 29 mi | 47 min | WNW 6G | 75°F | 29.96 | 61°F | ||
| LTJF1 | 29 mi | 47 min | 73°F | 60°F | ||||
| 41117 | 31 mi | 35 min | 75°F | 83°F | 5 ft | |||
| MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL | 31 mi | 47 min | WNW 8.9G | 73°F | 82°F | 29.96 | ||
| GTXF1 - Guana Tolomato Matanzas Reserve, FL | 32 mi | 80 min | NW 4.1 | 74°F | 29.98 | 67°F | ||
| FRDF1 - 8720030 - Fernandina Beach, FL | 48 mi | 47 min | WNW 7G | 74°F | 81°F | 29.95 |
toggle option: (graph/table)
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KNIP JACKSONVILLE NAS (TOWERS FLD),FL | 17 sm | 72 min | NNW 08 | 10 sm | A Few Clouds | 73°F | 57°F | 57% | 29.96 | |
| KSGJ NORTHEAST FLORIDA RGNL,FL | 17 sm | 75 min | NW 10 | 10 sm | Clear | 79°F | 66°F | 65% | 29.95 | |
| KVQQ CECIL,FL | 20 sm | 75 min | NNW 04 | 10 sm | Clear | 75°F | 61°F | 61% | 29.96 | |
| KHEG HERLONG RECREATIONAL,FL | 22 sm | 30 min | WNW 08 | 10 sm | Clear | 75°F | 59°F | 57% | 29.97 |
Wind History from NIP
(wind in knots)Tide / Current for Green Cove Springs, St. Johns River, Florida
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Green Cove Springs
Click for Map
Sat -- 12:27 AM EDT Moonset
Sat -- 02:47 AM EDT 4.34 feet Low Tide
Sat -- 07:15 AM EDT Sunrise
Sat -- 07:52 AM EDT 4.82 feet High Tide
Sat -- 02:40 PM EDT 4.24 feet Low Tide
Sat -- 03:29 PM EDT Moonrise
Sat -- 07:22 PM EDT Sunset
Sat -- 08:52 PM EDT 5.02 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 12:27 AM EDT Moonset
Sat -- 02:47 AM EDT 4.34 feet Low Tide
Sat -- 07:15 AM EDT Sunrise
Sat -- 07:52 AM EDT 4.82 feet High Tide
Sat -- 02:40 PM EDT 4.24 feet Low Tide
Sat -- 03:29 PM EDT Moonrise
Sat -- 07:22 PM EDT Sunset
Sat -- 08:52 PM EDT 5.02 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Green Cove Springs, St. Johns River, Florida, Tide feet
| 12 am |
| 4.5 |
| 1 am |
| 4.4 |
| 2 am |
| 4.4 |
| 3 am |
| 4.3 |
| 4 am |
| 4.4 |
| 5 am |
| 4.6 |
| 6 am |
| 4.8 |
| 7 am |
| 4.8 |
| 8 am |
| 4.8 |
| 9 am |
| 4.8 |
| 10 am |
| 4.6 |
| 11 am |
| 4.5 |
| 12 pm |
| 4.4 |
| 1 pm |
| 4.3 |
| 2 pm |
| 4.2 |
| 3 pm |
| 4.2 |
| 4 pm |
| 4.3 |
| 5 pm |
| 4.6 |
| 6 pm |
| 4.8 |
| 7 pm |
| 4.9 |
| 8 pm |
| 5 |
| 9 pm |
| 5 |
| 10 pm |
| 4.9 |
| 11 pm |
| 4.8 |
Black Creek
Click for Map
Sat -- 12:27 AM EDT Moonset
Sat -- 02:48 AM EDT 4.96 feet Low Tide
Sat -- 06:53 AM EDT 5.49 feet High Tide
Sat -- 07:15 AM EDT Sunrise
Sat -- 01:05 PM EDT 4.85 feet Low Tide
Sat -- 03:30 PM EDT Moonrise
Sat -- 07:22 PM EDT Sunset
Sat -- 07:56 PM EDT 5.70 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 12:27 AM EDT Moonset
Sat -- 02:48 AM EDT 4.96 feet Low Tide
Sat -- 06:53 AM EDT 5.49 feet High Tide
Sat -- 07:15 AM EDT Sunrise
Sat -- 01:05 PM EDT 4.85 feet Low Tide
Sat -- 03:30 PM EDT Moonrise
Sat -- 07:22 PM EDT Sunset
Sat -- 07:56 PM EDT 5.70 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Black Creek, S.C.L. RR. bridge, Florida, Tide feet
| 12 am |
| 5.1 |
| 1 am |
| 5 |
| 2 am |
| 5 |
| 3 am |
| 5 |
| 4 am |
| 5 |
| 5 am |
| 5.2 |
| 6 am |
| 5.4 |
| 7 am |
| 5.5 |
| 8 am |
| 5.4 |
| 9 am |
| 5.4 |
| 10 am |
| 5.2 |
| 11 am |
| 5 |
| 12 pm |
| 4.9 |
| 1 pm |
| 4.9 |
| 2 pm |
| 4.9 |
| 3 pm |
| 4.9 |
| 4 pm |
| 5 |
| 5 pm |
| 5.2 |
| 6 pm |
| 5.5 |
| 7 pm |
| 5.7 |
| 8 pm |
| 5.7 |
| 9 pm |
| 5.7 |
| 10 pm |
| 5.5 |
| 11 pm |
| 5.3 |
Jacksonville, FL,
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