Marine Weather and Tide Forecast for St. Simons, GA
May 16, 2024 7:43 PM EDT (23:43 UTC) Change Location
 | Sunrise 6:27 AM Sunset 8:16 PM Moonrise 1:12 PM Moonset 1:50 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- 207 Pm Edt Thu May 16 2024
Tonight - South winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 6 seconds. Intracoastal waters light chop.
Friday - South winds 5 to 10 knots, becoming southeast in the afternoon. Seas around 2 feet. Wave detail: southeast 2 feet at 6 seconds. Intracoastal waters light chop.
Friday night - South winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 4 seconds. Intracoastal waters light chop.
Saturday - South winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 4 seconds. Intracoastal waters light chop. A slight chance of showers in the morning, then a chance of showers and Thunderstorms in the afternoon.
Saturday night - Southwest winds around 10 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 4 seconds. Intracoastal waters light chop. A chance of Thunderstorms. A chance of showers in the evening, then showers likely after midnight.
Sunday - Southwest winds around 10 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 5 seconds and east 2 feet at 8 seconds. Intracoastal waters light chop. Showers likely. A chance of Thunderstorms in the morning, then Thunderstorms likely in the afternoon.
Sunday night - West winds around 10 knots. Seas 2 to 3 feet. Intracoastal waters light chop. A chance of showers and Thunderstorms, mainly in the evening.
Monday - North winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A slight chance of showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Monday - North winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A slight chance of showers and Thunderstorms in the evening. A slight chance of showers and Thunderstorms in the afternoon.
Tuesday night - Northeast winds 5 to 10 knots. Seas 2 to 3 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- 207 Pm Edt Thu May 16 2024
Synopsis - A ridge of high pressure builds into the area through Friday. Daily afternoon and evening wind surges expected today and Friday as the sea breeze shifts onshore. Associated high pressure shifts from the northeast to east of area waters this weekend as another frontal system approaches. The system will remain in the vicinity of the region through at least Monday, returning chances for showers and Thunderstorms. Another ridge looks to build in from the north by Monday.
Gulf stream -
the approximate location of the west wall of the gulf stream as of may 14, 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. 93 nautical miles east southeast of st simons island.
this data courtesy of the naval oceanographic office.
the approximate location of the west wall of the gulf stream as of may 14, 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. 93 nautical miles east southeast of st simons island.
this data courtesy of the naval oceanographic office.
Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 161820 AFDJAX
Area Forecast Discussion National Weather Service Jacksonville FL 220 PM EDT Thu May 16 2024
ISOLATED STRONG TO SEVERE STORMS POSSIBLE SATURDAY
NEAR TERM
Issued at 220 PM EDT Thu May 16 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
Hot and sunny day today with upper ridging and dry west- northwesterly flow. The Atlantic sea breeze will struggle to shift inland allowing temperatures to soar into the low 90s even all the way to the coast. Light southwesterly flow develops tonight ahead of an approaching cold front moving into the Deep South gradually increasing moisture. Calming winds and slight increase in low level moisture will lead to potential patchy fog developing along the I-75 corridor during the pre- dawn hours. Overnight lows will be in the mid/upper 60s to around 70.
SHORT TERM
(Friday through Saturday night)
Issued at 220 PM EDT Thu May 16 2024
Southwesterly flow and a lifting warm front will increase moisture levels across NE FL and SE GA, but not enough to promote more than scattered showers and thunderstorms inland on Friday afternoon and evening. High temperatures will be near normal in the upper 80s to lower 90s.
Precipitation chances will increase on Saturday as the frontal system approaches slowly from the northwest. Daytime heating ahead of the front will allow temperatures to soar into the lower to mid 90s for much of NE FL, including the beaches since elevated SW winds will keep the Atlantic sea breeze pinned to the coast. Heat indices across most of NE FL will rise to or above 100 degrees.
Numerous showers with embedded thunderstorms will be present across the area, with potential for strong to isolated severe thunderstorms, mainly in the afternoon due to diurnal heating. The slow movement of the front will allow for a locally heavy rainfall threat causing flooding concerns, mainly for SE GA and the Suwannee valley given already saturated soils from the past few days.
LONG TERM
(Sunday through next Thursday)
Issued at 220 PM EDT Thu May 16 2024
The front will sit over central Florida through the day Sunday, keeping numerous showers and thunderstorms in the forecast the evening, although there remains some uncertainty in the timing of the front's exit from the region. Temperatures Sunday will be slightly 'cooler' behind the front, with highs in the mid 80s to near 90.
Steering flow will shift northerly at the start of the work week, allowing drier conditions to move into the area, and even cooler high temperatures on Monday with highs in the upper 70s to upper 80s. Scattered rain and thunderstorms will remain possible on Monday afternoon and evening across NE FL and SE GA, by Tuesday isolated rain chances will be limited to north central Florida.
Temperatures will be on an upward trend through the week, with Wednesday looking rain-free for the area before isolated chances return Thursday as another front approaches from the north.
AVIATION
(18Z TAFS)
Issued at 123 PM EDT Thu May 16 2024
VFR conditions with west-northwesterly winds around 10 kts prevail today. The Atlantic sea breeze will be pinned to the coast and struggle to shift inland. Winds at SGJ will shift to southeasterly around 21Z with the sea breeze. Another round of inland patchy fog will be possible during the pre-dawn hours on Friday for GNV and VQQ.
MARINE
Issued at 220 PM EDT Thu May 16 2024
A ridge of high pressure builds into the area through Friday.
Daily afternoon and evening wind surges expected today and Friday as the sea breeze shifts onshore. Associated high pressure shifts from the northeast to east of area waters this weekend as another frontal system approaches. The system will remain in the vicinity of the region through at least Monday, returning chances for showers and thunderstorms. Another ridge looks to build in from the north by Monday.
Rip Currents: Offshore flow will lead to a Low Risk today, while a stronger sea breeze on Friday will lead to a Moderate Risk.
PRELIMINARY POINT TEMPS/POPS
AMG 66 89 72 89 / 0 30 30 80 SSI 72 85 73 89 / 0 10 10 60 JAX 68 92 72 93 / 0 10 10 50 SGJ 69 90 72 93 / 0 10 10 40 GNV 66 89 71 91 / 0 20 0 60 OCF 66 90 73 92 / 0 20 0 50
JAX WATCHES/WARNINGS/ADVISORIES
FL...None.
GA...None.
AM...None.
Area Forecast Discussion National Weather Service Jacksonville FL 220 PM EDT Thu May 16 2024
ISOLATED STRONG TO SEVERE STORMS POSSIBLE SATURDAY
NEAR TERM
Issued at 220 PM EDT Thu May 16 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
Hot and sunny day today with upper ridging and dry west- northwesterly flow. The Atlantic sea breeze will struggle to shift inland allowing temperatures to soar into the low 90s even all the way to the coast. Light southwesterly flow develops tonight ahead of an approaching cold front moving into the Deep South gradually increasing moisture. Calming winds and slight increase in low level moisture will lead to potential patchy fog developing along the I-75 corridor during the pre- dawn hours. Overnight lows will be in the mid/upper 60s to around 70.
SHORT TERM
(Friday through Saturday night)
Issued at 220 PM EDT Thu May 16 2024
Southwesterly flow and a lifting warm front will increase moisture levels across NE FL and SE GA, but not enough to promote more than scattered showers and thunderstorms inland on Friday afternoon and evening. High temperatures will be near normal in the upper 80s to lower 90s.
Precipitation chances will increase on Saturday as the frontal system approaches slowly from the northwest. Daytime heating ahead of the front will allow temperatures to soar into the lower to mid 90s for much of NE FL, including the beaches since elevated SW winds will keep the Atlantic sea breeze pinned to the coast. Heat indices across most of NE FL will rise to or above 100 degrees.
Numerous showers with embedded thunderstorms will be present across the area, with potential for strong to isolated severe thunderstorms, mainly in the afternoon due to diurnal heating. The slow movement of the front will allow for a locally heavy rainfall threat causing flooding concerns, mainly for SE GA and the Suwannee valley given already saturated soils from the past few days.
LONG TERM
(Sunday through next Thursday)
Issued at 220 PM EDT Thu May 16 2024
The front will sit over central Florida through the day Sunday, keeping numerous showers and thunderstorms in the forecast the evening, although there remains some uncertainty in the timing of the front's exit from the region. Temperatures Sunday will be slightly 'cooler' behind the front, with highs in the mid 80s to near 90.
Steering flow will shift northerly at the start of the work week, allowing drier conditions to move into the area, and even cooler high temperatures on Monday with highs in the upper 70s to upper 80s. Scattered rain and thunderstorms will remain possible on Monday afternoon and evening across NE FL and SE GA, by Tuesday isolated rain chances will be limited to north central Florida.
Temperatures will be on an upward trend through the week, with Wednesday looking rain-free for the area before isolated chances return Thursday as another front approaches from the north.
AVIATION
(18Z TAFS)
Issued at 123 PM EDT Thu May 16 2024
VFR conditions with west-northwesterly winds around 10 kts prevail today. The Atlantic sea breeze will be pinned to the coast and struggle to shift inland. Winds at SGJ will shift to southeasterly around 21Z with the sea breeze. Another round of inland patchy fog will be possible during the pre-dawn hours on Friday for GNV and VQQ.
MARINE
Issued at 220 PM EDT Thu May 16 2024
A ridge of high pressure builds into the area through Friday.
Daily afternoon and evening wind surges expected today and Friday as the sea breeze shifts onshore. Associated high pressure shifts from the northeast to east of area waters this weekend as another frontal system approaches. The system will remain in the vicinity of the region through at least Monday, returning chances for showers and thunderstorms. Another ridge looks to build in from the north by Monday.
Rip Currents: Offshore flow will lead to a Low Risk today, while a stronger sea breeze on Friday will lead to a Moderate Risk.
PRELIMINARY POINT TEMPS/POPS
AMG 66 89 72 89 / 0 30 30 80 SSI 72 85 73 89 / 0 10 10 60 JAX 68 92 72 93 / 0 10 10 50 SGJ 69 90 72 93 / 0 10 10 40 GNV 66 89 71 91 / 0 20 0 60 OCF 66 90 73 92 / 0 20 0 50
JAX WATCHES/WARNINGS/ADVISORIES
FL...None.
GA...None.
AM...None.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| SAXG1 - Sapelo Island Reserve, GA | 21 mi | 103 min | WNW 8 | 89°F | 29.77 | 66°F | ||
| KBMG1 | 25 mi | 55 min | 84°F | 29.81 | ||||
| 41112 - Offshore Fernandina Beach, FL (132) | 30 mi | 103 min | 79°F | 78°F | 2 ft | |||
| FRDF1 - 8720030 - Fernandina Beach, FL | 32 mi | 55 min | SE 6G | 84°F | 79°F | 29.79 | ||
| 41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA | 33 mi | 43 min | SSE 9.7G | 77°F | 78°F | 29.81 | 74°F |
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KSSI ST SIMONS ISLAND,GA | 1 sm | 28 min | WNW 05 | 10 sm | Clear | 86°F | 64°F | 49% | 29.80 | |
| KBQK BRUNSWICK GOLDEN ISLES,GA | 10 sm | 28 min | W 03 | 10 sm | Clear | 84°F | 63°F | 48% | 29.80 |
Tide / Current for St. Simons Lighthouse, St. Simons Island, Georgia
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Tide / Current data from XTide NOT FOR NAVIGATION
St. Simons Lighthouse, St. Simons Island, Georgia, Tide feet
Mackay River (Daymark #239)
Click for Map
Thu -- 02:50 AM EDT Moonset
Thu -- 04:13 AM EDT 6.47 feet High Tide
Thu -- 06:28 AM EDT Sunrise
Thu -- 10:42 AM EDT 1.38 feet Low Tide
Thu -- 02:12 PM EDT Moonrise
Thu -- 04:56 PM EDT 6.20 feet High Tide
Thu -- 08:15 PM EDT Sunset
Thu -- 11:08 PM EDT 1.57 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 02:50 AM EDT Moonset
Thu -- 04:13 AM EDT 6.47 feet High Tide
Thu -- 06:28 AM EDT Sunrise
Thu -- 10:42 AM EDT 1.38 feet Low Tide
Thu -- 02:12 PM EDT Moonrise
Thu -- 04:56 PM EDT 6.20 feet High Tide
Thu -- 08:15 PM EDT Sunset
Thu -- 11:08 PM EDT 1.57 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Mackay River (Daymark, Tide feet
| 12 am |
| 2.6 |
| 1 am |
| 3.8 |
| 2 am |
| 5 |
| 3 am |
| 6 |
| 4 am |
| 6.5 |
| 5 am |
| 6.3 |
| 6 am |
| 5.5 |
| 7 am |
| 4.4 |
| 8 am |
| 3.2 |
| 9 am |
| 2.2 |
| 10 am |
| 1.5 |
| 11 am |
| 1.4 |
| 12 pm |
| 1.9 |
| 1 pm |
| 2.7 |
| 2 pm |
| 3.9 |
| 3 pm |
| 5 |
| 4 pm |
| 5.9 |
| 5 pm |
| 6.2 |
| 6 pm |
| 5.9 |
| 7 pm |
| 5 |
| 8 pm |
| 4 |
| 9 pm |
| 2.9 |
| 10 pm |
| 2 |
| 11 pm |
| 1.6 |
Jacksonville, FL,
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