Marine Weather and Tide Forecast for Darien, GA
May 21, 2024 10:52 AM EDT (14:52 UTC) Change Location
 | Sunrise 6:25 AM Sunset 8:20 PM Moonrise 5:48 PM Moonset 3:59 AM |
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- 903 Am Edt Tue May 21 2024
.small craft exercise caution - .
Rest of today - Northeast winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: northeast 5 feet at 8 seconds. Intracoastal waters choppy. A chance of showers with a slight chance of Thunderstorms this morning, then a slight chance of showers this afternoon.
Tonight - Northeast winds 10 to 15 knots, becoming east 5 to 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: northeast 4 feet at 8 seconds. Intracoastal waters a moderate chop.
Wednesday - East winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: northeast 3 feet at 7 seconds. Intracoastal waters light chop.
Wednesday night - Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: east 3 feet at 7 seconds. Intracoastal waters light chop.
Thursday - Southeast winds 5 to 10 knots. Seas around 2 feet. Wave detail: east 2 feet at 9 seconds. Intracoastal waters light chop.
Thursday night - South winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 3 seconds and south 2 feet at 4 seconds. Intracoastal waters light chop.
Friday - South winds 5 to 10 knots, increasing to 10 to 15 knots in the evening, then becoming southwest 5 to 10 knots after midnight. Seas 2 to 3 feet. Intracoastal waters a moderate chop.
Saturday - Southwest winds 5 to 10 knots, becoming southeast in the afternoon. Seas around 2 feet. Intracoastal waters light chop. A slight chance of showers and Thunderstorms in the afternoon.
Saturday night - Southwest winds 5 to 10 knots. Seas around 2 feet. Intracoastal waters light chop.
winds and waves higher in and near Thunderstorms.
winds and waves higher in and near Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 903 Am Edt Tue May 21 2024
Synopsis -
northeasterly flow will decrease some today and Wednesday with high pressure shifting southward off the east coast. As the high shifts well east of the forecast area Thursday through Saturday, winds will become more southerly across the waters. Wind speeds are expected to be 5-10 kts with 2-3 ft seas Thursday through Saturday.
Gulf stream -
the approximate location of the west wall of the gulf stream as of may 18, 2024 at 1200 utc - .
64 nautical miles east of flagler beach. 73 nautical miles east of saint augustine beach. 82 nautical miles east of jacksonville beach. 101 nautical miles east southeast of st simons island.
this data courtesy of the naval oceanographic office.
northeasterly flow will decrease some today and Wednesday with high pressure shifting southward off the east coast. As the high shifts well east of the forecast area Thursday through Saturday, winds will become more southerly across the waters. Wind speeds are expected to be 5-10 kts with 2-3 ft seas Thursday through Saturday.
the approximate location of the west wall of the gulf stream as of may 18, 2024 at 1200 utc - .
64 nautical miles east of flagler beach. 73 nautical miles east of saint augustine beach. 82 nautical miles east of jacksonville beach. 101 nautical miles east southeast of st simons island.
this data courtesy of the naval oceanographic office.
Area Discussion for - Charleston, SC
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FXUS62 KCHS 211426 AFDCHS
Area Forecast Discussion National Weather Service Charleston SC 1026 AM EDT Tue May 21 2024
SYNOPSIS
High pressure will persist for most of this week. Diurnal convection is expected during the weekend.
NEAR TERM /THROUGH TONIGHT/
Today: Latest KCHS observed sounding (21.12z) revealed a very dry air mass in place with a PWAT of 0.90" (or near the 25th percentile according the SPC sounding climatology page). This is thanks to surface high pressure centered right over the Piedmont of NC with the ridge axis extending northeast and southwest.
This morning there was a thin stratus deck that built down to areas of fog. That has since lifted to a strato-cu/ cu deck with partly to mostly cloudy skies forecast. 850 mb temperatures have risen to 14 degrees C this morning (compared to 11/ 12 degrees C this time yesterday morning) with 1000/ 850 mb thicknesses rising to around 1395 m (or around 5 m). High temperatures will likely be 2 - 4 degrees warmer than yesterday or around 84/ 85 degrees.
Tonight: Diurnally driven cloud cover fades quickly this evening leaving mainly clear skies and light winds. Blended guidance fog probabilities as well as MOS guidance suggest some fog potential...which has been added to the forecast for the overnight/early Wednesday morning timeframe.
SHORT TERM /WEDNESDAY THROUGH FRIDAY/
Wednesday: The mid-levels will consist of a cut-off Low off the Southeast coast in the morning. It'll move further offshore as time progresses. Meanwhile, a ridge will prevail over the Southeast U.S.
At the surface, High pressure along the Southeast coast in the morning will shift offshore into the afternoon. A front will slowly approach from the north and northwest during the evening and overnight. Though, it won't make it near our area as the periphery of the High remains the dominant synoptic feature. Ongoing low and mid-level subsidence will bring our area dry conditions with mostly sunny/clear skies. Expect a sea breeze quickly moving inland during the afternoon. Low-level thickness values and 850 mb temperatures support highs in the upper 80s before the passage of the sea breeze, except cooler at the beaches. Lows should range from the lower 60s far inland to the lower 70s along the immediate coast.
Thursday: A mid-level ridge over the Southeast U.S. in the morning will weaken as time progresses, leading to west southwest flow overhead. Surface High pressure just off the Southeast coast in the morning will move further offshore as time progresses. Meanwhile, a front to our north and northwest will continue to approach, especially overnight. However, it's not expected to reach our area.
The periphery of the High will bring another day with dry conditions. Though, subsidence won't be as strong, so expect more cumulus clouds in the afternoon along with a strong sea breeze quickly moving inland. Low-level thickness values and 850 mb temperatures support highs around 90 degrees before the passage of the sea breeze, except cooler at the beaches. Lows will be mild, in the mid 60s far inland to the lower 70s along the immediate coast.
Friday: The mid-levels will consist of west southwest flow overhead.
At the surface, High pressure will be centered in the western Atlantic, with it's periphery trying to extend into the Southeast. A front to our north and northwest during the morning will dissipate into the afternoon, partly due to the High trying to build back into our area. Increased moisture ahead of the front and circling around the High will be in place across our area during the afternoon.
Temperatures peaking in the lower 90s will help to increase instability. Therefore, a few thunderstorms may form around the vicinity of the weakening front and along the sea breeze in the afternoon, especially across our SC counties. But it's not looking like a washout at this time. These details will be ironed out with future forecast updates.
LONG TERM /FRIDAY NIGHT THROUGH MONDAY/
A weak trough should pass to our north Friday night into early Saturday, followed by zonal flow over the Southeast through Monday.
Surface High pressure will remain in the western Atlantic while fronts are forecasted to pass to our north. Expect convection along/near the sea breeze each afternoon/evening, decreasing during the overnight hours. Temperatures will remain a few degrees above normal each day and night.
AVIATION /14Z TUESDAY THROUGH SATURDAY/
KCHS/KJZI/KSAV: Satellite data shows some fog and lower cloud cover across the region trying to spread down toward the KSAV terminal. 12Z forecast will have a brief period of sct lower clouds at KSAV. Otherwise, a SCT Cumulus deck will likely develop later this morning hours and into the afternoon across the region. A brief period of BKN cloud cover is possible.
Meanwhile, an uptick in northeasterly winds up to 10 knots will take place during the morning, veering easterly or southeasterly through the afternoon. Winds diminish during the evening.
Extended Aviation Outlook: VFR through Friday. Brief flight restrictions are possible due to showers/thunderstorms later Saturday.
MARINE
Northeasterly winds persist across the coastal waters today with speeds running 10 to 15 knots and seas 2 to 4 feet in the nearshore waters, 3 to 5 feet in the outer waters. Winds and seas diminishing tonight.
Extended Marine: High pressure remains the main synoptic feature through Thursday. A cold front should approach from the north and northwest later Friday, but it's not expected to reach our area.
Otherwise, expect a typical summer wind pattern beginning Thursday.
That's when each day winds will back and be stronger along the land/sea interface with the formation of the afternoon breeze. Gusts could approach 20 kt in the Charleston Harbor with the passage of the sea breeze. Each night, winds should veer as the low level jet sets up along the coast. Additionally, convection should return during the weekend.
Rip Currents: With the approaching Full Moon, it won't take more than a small swell to lead to an enhanced risk of rip currents at the local beaches. Both internal calculations and RCMOS point to a Low Risk through Wednesday. But if the swell is higher than anticipated, then the risk will need to be raised.
TIDES/COASTAL FLOODING
The combination of rising astronomical tides with the upcoming Full Moon and onshore winds will cause tides to be elevated through the middle of this week. Minor flooding is possible with the evening high tides through Thursday along coastal Charleston and coastal Colleton Counties. There are no concerns at this time along the remainder of our coast.
CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...Coastal Flood Advisory from 6 PM to 10 PM EDT this evening for SCZ049-050.
MARINE...None.
Area Forecast Discussion National Weather Service Charleston SC 1026 AM EDT Tue May 21 2024
SYNOPSIS
High pressure will persist for most of this week. Diurnal convection is expected during the weekend.
NEAR TERM /THROUGH TONIGHT/
Today: Latest KCHS observed sounding (21.12z) revealed a very dry air mass in place with a PWAT of 0.90" (or near the 25th percentile according the SPC sounding climatology page). This is thanks to surface high pressure centered right over the Piedmont of NC with the ridge axis extending northeast and southwest.
This morning there was a thin stratus deck that built down to areas of fog. That has since lifted to a strato-cu/ cu deck with partly to mostly cloudy skies forecast. 850 mb temperatures have risen to 14 degrees C this morning (compared to 11/ 12 degrees C this time yesterday morning) with 1000/ 850 mb thicknesses rising to around 1395 m (or around 5 m). High temperatures will likely be 2 - 4 degrees warmer than yesterday or around 84/ 85 degrees.
Tonight: Diurnally driven cloud cover fades quickly this evening leaving mainly clear skies and light winds. Blended guidance fog probabilities as well as MOS guidance suggest some fog potential...which has been added to the forecast for the overnight/early Wednesday morning timeframe.
SHORT TERM /WEDNESDAY THROUGH FRIDAY/
Wednesday: The mid-levels will consist of a cut-off Low off the Southeast coast in the morning. It'll move further offshore as time progresses. Meanwhile, a ridge will prevail over the Southeast U.S.
At the surface, High pressure along the Southeast coast in the morning will shift offshore into the afternoon. A front will slowly approach from the north and northwest during the evening and overnight. Though, it won't make it near our area as the periphery of the High remains the dominant synoptic feature. Ongoing low and mid-level subsidence will bring our area dry conditions with mostly sunny/clear skies. Expect a sea breeze quickly moving inland during the afternoon. Low-level thickness values and 850 mb temperatures support highs in the upper 80s before the passage of the sea breeze, except cooler at the beaches. Lows should range from the lower 60s far inland to the lower 70s along the immediate coast.
Thursday: A mid-level ridge over the Southeast U.S. in the morning will weaken as time progresses, leading to west southwest flow overhead. Surface High pressure just off the Southeast coast in the morning will move further offshore as time progresses. Meanwhile, a front to our north and northwest will continue to approach, especially overnight. However, it's not expected to reach our area.
The periphery of the High will bring another day with dry conditions. Though, subsidence won't be as strong, so expect more cumulus clouds in the afternoon along with a strong sea breeze quickly moving inland. Low-level thickness values and 850 mb temperatures support highs around 90 degrees before the passage of the sea breeze, except cooler at the beaches. Lows will be mild, in the mid 60s far inland to the lower 70s along the immediate coast.
Friday: The mid-levels will consist of west southwest flow overhead.
At the surface, High pressure will be centered in the western Atlantic, with it's periphery trying to extend into the Southeast. A front to our north and northwest during the morning will dissipate into the afternoon, partly due to the High trying to build back into our area. Increased moisture ahead of the front and circling around the High will be in place across our area during the afternoon.
Temperatures peaking in the lower 90s will help to increase instability. Therefore, a few thunderstorms may form around the vicinity of the weakening front and along the sea breeze in the afternoon, especially across our SC counties. But it's not looking like a washout at this time. These details will be ironed out with future forecast updates.
LONG TERM /FRIDAY NIGHT THROUGH MONDAY/
A weak trough should pass to our north Friday night into early Saturday, followed by zonal flow over the Southeast through Monday.
Surface High pressure will remain in the western Atlantic while fronts are forecasted to pass to our north. Expect convection along/near the sea breeze each afternoon/evening, decreasing during the overnight hours. Temperatures will remain a few degrees above normal each day and night.
AVIATION /14Z TUESDAY THROUGH SATURDAY/
KCHS/KJZI/KSAV: Satellite data shows some fog and lower cloud cover across the region trying to spread down toward the KSAV terminal. 12Z forecast will have a brief period of sct lower clouds at KSAV. Otherwise, a SCT Cumulus deck will likely develop later this morning hours and into the afternoon across the region. A brief period of BKN cloud cover is possible.
Meanwhile, an uptick in northeasterly winds up to 10 knots will take place during the morning, veering easterly or southeasterly through the afternoon. Winds diminish during the evening.
Extended Aviation Outlook: VFR through Friday. Brief flight restrictions are possible due to showers/thunderstorms later Saturday.
MARINE
Northeasterly winds persist across the coastal waters today with speeds running 10 to 15 knots and seas 2 to 4 feet in the nearshore waters, 3 to 5 feet in the outer waters. Winds and seas diminishing tonight.
Extended Marine: High pressure remains the main synoptic feature through Thursday. A cold front should approach from the north and northwest later Friday, but it's not expected to reach our area.
Otherwise, expect a typical summer wind pattern beginning Thursday.
That's when each day winds will back and be stronger along the land/sea interface with the formation of the afternoon breeze. Gusts could approach 20 kt in the Charleston Harbor with the passage of the sea breeze. Each night, winds should veer as the low level jet sets up along the coast. Additionally, convection should return during the weekend.
Rip Currents: With the approaching Full Moon, it won't take more than a small swell to lead to an enhanced risk of rip currents at the local beaches. Both internal calculations and RCMOS point to a Low Risk through Wednesday. But if the swell is higher than anticipated, then the risk will need to be raised.
TIDES/COASTAL FLOODING
The combination of rising astronomical tides with the upcoming Full Moon and onshore winds will cause tides to be elevated through the middle of this week. Minor flooding is possible with the evening high tides through Thursday along coastal Charleston and coastal Colleton Counties. There are no concerns at this time along the remainder of our coast.
CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...Coastal Flood Advisory from 6 PM to 10 PM EDT this evening for SCZ049-050.
MARINE...None.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| SAXG1 - Sapelo Island Reserve, GA | 8 mi | 53 min | N 12 | 73°F | 30.01 | 72°F | ||
| 41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA | 27 mi | 43 min | NNE 18G | 74°F | 76°F | 30.00 | 70°F | |
| KBMG1 | 38 mi | 53 min | 75°F | 30.00 | ||||
| 41112 - Offshore Fernandina Beach, FL (132) | 42 mi | 53 min | 76°F | 77°F | 4 ft | |||
| FRDF1 - 8720030 - Fernandina Beach, FL | 45 mi | 53 min | N 8G | 78°F | 78°F | 29.98 |
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KBQK BRUNSWICK GOLDEN ISLES,GA | 7 sm | 17 min | NNE 09 | 10 sm | Mostly Cloudy | 75°F | 68°F | 78% | 30.01 | |
| KSSI ST SIMONS ISLAND,GA | 12 sm | 17 min | NNE 11 | 10 sm | Overcast | 77°F | 70°F | 78% | 30.00 |
Tide / Current for Jones Creek entrance, Hampton River, Georgia
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Jones Creek entrance
Click for Map
Tue -- 01:42 AM EDT 0.62 feet Low Tide
Tue -- 04:58 AM EDT Moonset
Tue -- 06:25 AM EDT Sunrise
Tue -- 08:19 AM EDT 6.73 feet High Tide
Tue -- 01:37 PM EDT 0.43 feet Low Tide
Tue -- 06:47 PM EDT Moonrise
Tue -- 08:18 PM EDT Sunset
Tue -- 08:48 PM EDT 7.88 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 01:42 AM EDT 0.62 feet Low Tide
Tue -- 04:58 AM EDT Moonset
Tue -- 06:25 AM EDT Sunrise
Tue -- 08:19 AM EDT 6.73 feet High Tide
Tue -- 01:37 PM EDT 0.43 feet Low Tide
Tue -- 06:47 PM EDT Moonrise
Tue -- 08:18 PM EDT Sunset
Tue -- 08:48 PM EDT 7.88 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Jones Creek entrance, Hampton River, Georgia, Tide feet
| 12 am |
| 2.3 |
| 1 am |
| 0.9 |
| 2 am |
| 0.7 |
| 3 am |
| 1.2 |
| 4 am |
| 2.4 |
| 5 am |
| 3.7 |
| 6 am |
| 5.1 |
| 7 am |
| 6.2 |
| 8 am |
| 6.7 |
| 9 am |
| 6.5 |
| 10 am |
| 5.3 |
| 11 am |
| 3.6 |
| 12 pm |
| 1.9 |
| 1 pm |
| 0.7 |
| 2 pm |
| 0.5 |
| 3 pm |
| 1.2 |
| 4 pm |
| 2.4 |
| 5 pm |
| 4 |
| 6 pm |
| 5.5 |
| 7 pm |
| 6.8 |
| 8 pm |
| 7.7 |
| 9 pm |
| 7.9 |
| 10 pm |
| 7.1 |
| 11 pm |
| 5.6 |
Old Tower
Click for Map
Tue -- 01:41 AM EDT 0.59 feet Low Tide
Tue -- 04:58 AM EDT Moonset
Tue -- 06:25 AM EDT Sunrise
Tue -- 07:28 AM EDT 6.41 feet High Tide
Tue -- 01:37 PM EDT 0.41 feet Low Tide
Tue -- 06:47 PM EDT Moonrise
Tue -- 07:57 PM EDT 7.51 feet High Tide
Tue -- 08:18 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 01:41 AM EDT 0.59 feet Low Tide
Tue -- 04:58 AM EDT Moonset
Tue -- 06:25 AM EDT Sunrise
Tue -- 07:28 AM EDT 6.41 feet High Tide
Tue -- 01:37 PM EDT 0.41 feet Low Tide
Tue -- 06:47 PM EDT Moonrise
Tue -- 07:57 PM EDT 7.51 feet High Tide
Tue -- 08:18 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Old Tower, Sapelo Island, Georgia, Tide feet
| 12 am |
| 1.9 |
| 1 am |
| 0.8 |
| 2 am |
| 0.6 |
| 3 am |
| 1.3 |
| 4 am |
| 2.7 |
| 5 am |
| 4.2 |
| 6 am |
| 5.5 |
| 7 am |
| 6.3 |
| 8 am |
| 6.3 |
| 9 am |
| 5.5 |
| 10 am |
| 4.3 |
| 11 am |
| 2.9 |
| 12 pm |
| 1.5 |
| 1 pm |
| 0.6 |
| 2 pm |
| 0.5 |
| 3 pm |
| 1.3 |
| 4 pm |
| 2.8 |
| 5 pm |
| 4.5 |
| 6 pm |
| 6 |
| 7 pm |
| 7.1 |
| 8 pm |
| 7.5 |
| 9 pm |
| 7.1 |
| 10 pm |
| 6 |
| 11 pm |
| 4.5 |
Jacksonville, FL,
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