Marine Weather and Tide Forecast for Hardeeville, SC
May 19, 2024 8:38 AM EDT (12:38 UTC) Change Location
 | Sunrise 6:23 AM Sunset 8:19 PM Moonrise 3:53 PM Moonset 3:04 AM |
AMZ352 Waters From Edisto Beach Sc To Savannah Ga Out 20 Nm- 648 Am Edt Sun May 19 2024
Today - W winds 5 to 10 kt, becoming nw early this afternoon, then becoming ne late. Seas 2 ft. Wave detail: sw 2 ft at 4 seconds and se 1 foot at 8 seconds. Showers and tstms this afternoon.
Tonight - NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft. Wave detail: ne 3 ft at 5 seconds and S 2 ft at 5 seconds. Showers and tstms, mainly in the evening. Some tstms may produce heavy rainfall in the evening.
Mon - NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave detail: ne 4 ft at 5 seconds and S 1 foot at 5 seconds.
Mon night - NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave detail: E 4 ft at 7 seconds.
Tue - NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave detail: E 4 ft at 7 seconds.
Tue night - E winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: E 3 ft at 7 seconds.
Wed - E winds 5 to 10 kt. Seas 2 ft.
Wed night - S winds 5 to 10 kt. Seas 2 ft.
Thu - SW winds 5 to 10 kt. Seas 2 ft.
Thu night - S winds 10 kt. Seas 2 ft.
winds and seas higher in and near tstms.
winds and seas higher in and near tstms.
AMZ300 648 Am Edt Sun May 19 2024
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia - A cold front will cross through our area later today. High pressure then prevails for most of this week, followed by another storm system potentially impacting our area late this week.
Area Discussion for - Charleston, SC
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FXUS62 KCHS 191158 AFDCHS
Area Forecast Discussion National Weather Service Charleston SC 758 AM EDT Sun May 19 2024
SYNOPSIS
A cold front will cross through our area later today. High pressure then prevails for most of this week, followed by another storm system potentially impacting our area late this week.
NEAR TERM /THROUGH TONIGHT/
Early morning update: Difficult to tell...but surface boundary (or outflow) appears to be draped across the forecast area from Jenkins county to off the Charleston County coast into the Atlantic. Short-wave circulation continues to fold its way down through northern into central Georgia. Not much occurring precip-wise at the moment (actually have a chunk of mainly clear skies across the forecast area ahead of the circulation). But that will change through the morning as shallow cooler air and lower cloud cover begins to settle into the region from the north while we heat things up further south. Guidance continues to point at the development of showers/storms by early afternoon along the leading edge of the wave in tandem with the surface boundary. No significant changes to the forecast at this point.
Previous discussion...
Smaller scale convectively induced circulation continues to advance northeastward off the Georgia coast early this morning.
Strong low level jet axis ahead of the wave extends up through the coastal waters...evidenced by some unexpected gusty winds from Savannah up through the Charleston coastal waters, while also driving an axis of showers and thunderstorms across the coastal waters. Convection will push away from the coast over the next several hours.
Meanwhile, positive tilt mid level trough axis extends from the mid Atlantic region down into the central Gulf, and attending short-wave circulation pressing into northern Georgia. Surface boundary extends across the far SE sliver of North Carolina and back into the upstate South Carolina region along with some convection that is slowly sagging into the central part of the state.
Short-wave circulation and attending surface boundary will advance down through the forecast area during the course of the afternoon and off the coast tonight. Larger scale forcing for ascent with the wave...in tandem with the boundary, daytime heating and destabilization (1-2K J/Kg MLCAPE by early afternoon south of the boundary) will kick off a compact area of showers and thunderstorms that will track down through the forecast area during the course of the afternoon. Given the high PWAT values (1.5-2 inches) south of the boundary, heavy rainfall will be a possibility and concern.
Biggest issue revolves around where convection develops and the subsequent main area of impact. Recent CAM guidance runs/trends press the surface boundary south of the Charleston tri-county area quickly this morning and fire off convection largely across the southern half of the forecast area. We have made some southward adjustments to the highest pops/QPF amounts with this forecast.
Tonight: Short-wave trough axis will slowly push off the coast while surface high pressure wedges down from the north.
Convection will run its course this evening with thinning cloud cover during the overnight hours
Cooler temperatures
dipping down through the 60s for lows.
SHORT TERM /MONDAY THROUGH WEDNESDAY/
Monday: The mid-levels will consist of a positively tilted trough just off the Southeast U.S. coast in the morning, and a ridge just to our west. The ridge will slowly build into our area as time progresses. At the surface, High pressure centered well to our north will build down the coast as time progresses, with it's southern periphery making its way into our area. The High will bring dry conditions with skies becoming mostly sunny/clear. Low-level thickness values support temperatures in the middle 80s. But we went a little below this due to the northeasterly surface winds and the expectation that surface evaporation should limit temperatures.
Highs should peak in the lower 80s. Lows should range from the upper 50s far inland to the mid 60s closer to the coast.
Tuesday: A positively tilted mid-level trough will be just off the Southeast U.S. coast in the morning, transitioning into a cut- off Low in the evening and overnight. Meanwhile, a ridge will strengthen over the Southeast U.S. Broad High pressure centered to our north in the morning will shift off the Mid-Atlantic Coast as the day progresses. Though, it's southern periphery will continue to dominate our weather during the day and into the night. Subsidence will yield dry conditions with mostly sunny/clear skies. High temperatures should be in the mid 80s, except cooler at the beaches.
Lows should range from the upper 50s far inland to the mid 60s closer to the coast.
Wednesday: The mid-levels will consist of a cut-off Low meandering off the Southeast coast, while a ridge prevails 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. Though, it won't make it near our area as the High will remain the dominant synoptic feature. Some of the models hint at isolated weak showers trying to form along the inland moving sea breeze late in the afternoon. But it's still a little too early to determine if the dry air in place will completely squash these weak showers. Expect at least partly sunny skies. Highs will peak in the mid to upper 80s, except cooler at the beaches.
LONG TERM /WEDNESDAY NIGHT THROUGH SATURDAY/
Mid-level ridging will be over our region Wednesday night, followed by west southwest flow on Thursday. A weak trough may pass to our north Friday night into Saturday. Surface High pressure in the western Atlantic on Thursday will shift further offshore as time progresses. A cold front could approach from the north and northwest later Friday, then lift north on Saturday. Expect mainly dry conditions Thursday, with increasing diurnal convection Friday and Saturday. High temperatures will be a few degrees above normal each day.
AVIATION /12Z SUNDAY THROUGH THURSDAY/
Largely VFR conditions will persist for the next few hours although with an increased risk for MVFR cigs developing as we get into the daytime heating cycle. With heating, the risk for showers/tstms will increase by early afternoon with the best focus for showers/tstms still looking to occur just south of KCHS and impacting KJZI and especially KSAV. A TEMPO for TSRA was included from 18-21z at KJZI to account for some coverage/timing uncertainties. Prevailing TSRA remains for KSAV (20-00z).
Conditions were limited to MVFR for now with both cigs/vsbys holding above alternate minimums. However, lower conditions may eventually be needed as confidence in the timing, placement and intensity of showers/tstms increases.
Convection diminishes this evening with some clearing taking shape. Some low stratus is possible, particularly at KSAV where the best coverage of rainfall is anticipated today.
Extended Aviation Outlook: VFR.
MARINE
A brief period of gustier southerly winds will impact the coastal waters early this morning. Surface boundary will move down through the region as we go through the day and kick off another round of showers and thunderstorms during the afternoon.
Winds veer northerly behind the front and will be increasing as we go through tonight.
Monday: A cold front will be shifting offshore early in the morning. Meanwhile, High pressure centered well to our north will build down the coast and into our area as time progresses. The strongest gradient will occur in the morning, with wind gusts just short of 25 kt possible across much of the waters, and seas 3-5 ft.
The gradient will gradually weaken into the afternoon and overnight, with seas gradually subsiding as well.
Tuesday and Beyond: NE winds on Tuesday will shift around to the SE by later Wednesday as High pressure gradually shifts off our coast.
This will lead to a more typical summer wind pattern on Thursday with the formation of the afternoon sea breeze.
TIDES/COASTAL FLOODING
The combination of rising astronomical tides with the upcoming Full Moon and moderate NE winds will cause tides to be elevated early this week. Minor flooding is possible with the evening high tides Monday and Tuesday, mainly along the South Carolina coast.
CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...None.
MARINE...None.
Area Forecast Discussion National Weather Service Charleston SC 758 AM EDT Sun May 19 2024
SYNOPSIS
A cold front will cross through our area later today. High pressure then prevails for most of this week, followed by another storm system potentially impacting our area late this week.
NEAR TERM /THROUGH TONIGHT/
Early morning update: Difficult to tell...but surface boundary (or outflow) appears to be draped across the forecast area from Jenkins county to off the Charleston County coast into the Atlantic. Short-wave circulation continues to fold its way down through northern into central Georgia. Not much occurring precip-wise at the moment (actually have a chunk of mainly clear skies across the forecast area ahead of the circulation). But that will change through the morning as shallow cooler air and lower cloud cover begins to settle into the region from the north while we heat things up further south. Guidance continues to point at the development of showers/storms by early afternoon along the leading edge of the wave in tandem with the surface boundary. No significant changes to the forecast at this point.
Previous discussion...
Smaller scale convectively induced circulation continues to advance northeastward off the Georgia coast early this morning.
Strong low level jet axis ahead of the wave extends up through the coastal waters...evidenced by some unexpected gusty winds from Savannah up through the Charleston coastal waters, while also driving an axis of showers and thunderstorms across the coastal waters. Convection will push away from the coast over the next several hours.
Meanwhile, positive tilt mid level trough axis extends from the mid Atlantic region down into the central Gulf, and attending short-wave circulation pressing into northern Georgia. Surface boundary extends across the far SE sliver of North Carolina and back into the upstate South Carolina region along with some convection that is slowly sagging into the central part of the state.
Short-wave circulation and attending surface boundary will advance down through the forecast area during the course of the afternoon and off the coast tonight. Larger scale forcing for ascent with the wave...in tandem with the boundary, daytime heating and destabilization (1-2K J/Kg MLCAPE by early afternoon south of the boundary) will kick off a compact area of showers and thunderstorms that will track down through the forecast area during the course of the afternoon. Given the high PWAT values (1.5-2 inches) south of the boundary, heavy rainfall will be a possibility and concern.
Biggest issue revolves around where convection develops and the subsequent main area of impact. Recent CAM guidance runs/trends press the surface boundary south of the Charleston tri-county area quickly this morning and fire off convection largely across the southern half of the forecast area. We have made some southward adjustments to the highest pops/QPF amounts with this forecast.
Tonight: Short-wave trough axis will slowly push off the coast while surface high pressure wedges down from the north.
Convection will run its course this evening with thinning cloud cover during the overnight hours
Cooler temperatures
dipping down through the 60s for lows.
SHORT TERM /MONDAY THROUGH WEDNESDAY/
Monday: The mid-levels will consist of a positively tilted trough just off the Southeast U.S. coast in the morning, and a ridge just to our west. The ridge will slowly build into our area as time progresses. At the surface, High pressure centered well to our north will build down the coast as time progresses, with it's southern periphery making its way into our area. The High will bring dry conditions with skies becoming mostly sunny/clear. Low-level thickness values support temperatures in the middle 80s. But we went a little below this due to the northeasterly surface winds and the expectation that surface evaporation should limit temperatures.
Highs should peak in the lower 80s. Lows should range from the upper 50s far inland to the mid 60s closer to the coast.
Tuesday: A positively tilted mid-level trough will be just off the Southeast U.S. coast in the morning, transitioning into a cut- off Low in the evening and overnight. Meanwhile, a ridge will strengthen over the Southeast U.S. Broad High pressure centered to our north in the morning will shift off the Mid-Atlantic Coast as the day progresses. Though, it's southern periphery will continue to dominate our weather during the day and into the night. Subsidence will yield dry conditions with mostly sunny/clear skies. High temperatures should be in the mid 80s, except cooler at the beaches.
Lows should range from the upper 50s far inland to the mid 60s closer to the coast.
Wednesday: The mid-levels will consist of a cut-off Low meandering off the Southeast coast, while a ridge prevails 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. Though, it won't make it near our area as the High will remain the dominant synoptic feature. Some of the models hint at isolated weak showers trying to form along the inland moving sea breeze late in the afternoon. But it's still a little too early to determine if the dry air in place will completely squash these weak showers. Expect at least partly sunny skies. Highs will peak in the mid to upper 80s, except cooler at the beaches.
LONG TERM /WEDNESDAY NIGHT THROUGH SATURDAY/
Mid-level ridging will be over our region Wednesday night, followed by west southwest flow on Thursday. A weak trough may pass to our north Friday night into Saturday. Surface High pressure in the western Atlantic on Thursday will shift further offshore as time progresses. A cold front could approach from the north and northwest later Friday, then lift north on Saturday. Expect mainly dry conditions Thursday, with increasing diurnal convection Friday and Saturday. High temperatures will be a few degrees above normal each day.
AVIATION /12Z SUNDAY THROUGH THURSDAY/
Largely VFR conditions will persist for the next few hours although with an increased risk for MVFR cigs developing as we get into the daytime heating cycle. With heating, the risk for showers/tstms will increase by early afternoon with the best focus for showers/tstms still looking to occur just south of KCHS and impacting KJZI and especially KSAV. A TEMPO for TSRA was included from 18-21z at KJZI to account for some coverage/timing uncertainties. Prevailing TSRA remains for KSAV (20-00z).
Conditions were limited to MVFR for now with both cigs/vsbys holding above alternate minimums. However, lower conditions may eventually be needed as confidence in the timing, placement and intensity of showers/tstms increases.
Convection diminishes this evening with some clearing taking shape. Some low stratus is possible, particularly at KSAV where the best coverage of rainfall is anticipated today.
Extended Aviation Outlook: VFR.
MARINE
A brief period of gustier southerly winds will impact the coastal waters early this morning. Surface boundary will move down through the region as we go through the day and kick off another round of showers and thunderstorms during the afternoon.
Winds veer northerly behind the front and will be increasing as we go through tonight.
Monday: A cold front will be shifting offshore early in the morning. Meanwhile, High pressure centered well to our north will build down the coast and into our area as time progresses. The strongest gradient will occur in the morning, with wind gusts just short of 25 kt possible across much of the waters, and seas 3-5 ft.
The gradient will gradually weaken into the afternoon and overnight, with seas gradually subsiding as well.
Tuesday and Beyond: NE winds on Tuesday will shift around to the SE by later Wednesday as High pressure gradually shifts off our coast.
This will lead to a more typical summer wind pattern on Thursday with the formation of the afternoon sea breeze.
TIDES/COASTAL FLOODING
The combination of rising astronomical tides with the upcoming Full Moon and moderate NE winds will cause tides to be elevated early this week. Minor flooding is possible with the evening high tides Monday and Tuesday, mainly along the South Carolina coast.
CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...None.
MARINE...None.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| FPKG1 - 8670870 - Fort Pulaski, GA | 22 mi | 80 min | W 6G | 71°F | 76°F | 29.88 | ||
| 41033 | 38 mi | 90 min | W 9.7G | 74°F | 75°F | 29.85 | 70°F | |
| 41067 | 38 mi | 113 min | 75°F | 2 ft | ||||
| ACXS1 - ACE Basin Reserve, SC | 40 mi | 113 min | 0 | 69°F | 29.83 | 68°F |
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KSAV SAVANNAH/HILTON HEAD INTL,GA | 13 sm | 45 min | W 09 | 10 sm | Partly Cloudy | 72°F | 66°F | 83% | 29.89 | |
| KHXD HILTON HEAD,SC | 23 sm | 48 min | WNW 06 | 10 sm | Clear | 72°F | 68°F | 88% | 29.89 |
Tide / Current for Purrysburg Landing, Savannah River, South Carolina
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Purrysburg Landing
Click for Map
Sun -- 03:25 AM EDT 0.49 feet Low Tide
Sun -- 04:04 AM EDT Moonset
Sun -- 06:23 AM EDT Sunrise
Sun -- 07:55 AM EDT 2.79 feet High Tide
Sun -- 03:34 PM EDT 0.35 feet Low Tide
Sun -- 04:53 PM EDT Moonrise
Sun -- 08:18 PM EDT Sunset
Sun -- 08:39 PM EDT 3.01 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 03:25 AM EDT 0.49 feet Low Tide
Sun -- 04:04 AM EDT Moonset
Sun -- 06:23 AM EDT Sunrise
Sun -- 07:55 AM EDT 2.79 feet High Tide
Sun -- 03:34 PM EDT 0.35 feet Low Tide
Sun -- 04:53 PM EDT Moonrise
Sun -- 08:18 PM EDT Sunset
Sun -- 08:39 PM EDT 3.01 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Purrysburg Landing, Savannah River, South Carolina, Tide feet
| 12 am |
| 1.5 |
| 1 am |
| 1.1 |
| 2 am |
| 0.7 |
| 3 am |
| 0.5 |
| 4 am |
| 0.6 |
| 5 am |
| 1.2 |
| 6 am |
| 2 |
| 7 am |
| 2.6 |
| 8 am |
| 2.8 |
| 9 am |
| 2.7 |
| 10 am |
| 2.4 |
| 11 am |
| 1.9 |
| 12 pm |
| 1.4 |
| 1 pm |
| 1 |
| 2 pm |
| 0.6 |
| 3 pm |
| 0.4 |
| 4 pm |
| 0.4 |
| 5 pm |
| 0.9 |
| 6 pm |
| 1.7 |
| 7 pm |
| 2.5 |
| 8 pm |
| 2.9 |
| 9 pm |
| 3 |
| 10 pm |
| 2.8 |
| 11 pm |
| 2.5 |
Savannah River Entrance
Click for Map
Sun -- 12:54 AM EDT 0.00 knots Slack
Sun -- 03:22 AM EDT 1.64 knots Max Flood
Sun -- 04:03 AM EDT Moonset
Sun -- 06:23 AM EDT Sunrise
Sun -- 06:48 AM EDT -0.00 knots Slack
Sun -- 09:58 AM EDT -1.48 knots Max Ebb
Sun -- 12:51 PM EDT 0.00 knots Slack
Sun -- 03:33 PM EDT 1.87 knots Max Flood
Sun -- 04:51 PM EDT Moonrise
Sun -- 07:17 PM EDT -0.00 knots Slack
Sun -- 08:16 PM EDT Sunset
Sun -- 10:58 PM EDT -1.86 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 12:54 AM EDT 0.00 knots Slack
Sun -- 03:22 AM EDT 1.64 knots Max Flood
Sun -- 04:03 AM EDT Moonset
Sun -- 06:23 AM EDT Sunrise
Sun -- 06:48 AM EDT -0.00 knots Slack
Sun -- 09:58 AM EDT -1.48 knots Max Ebb
Sun -- 12:51 PM EDT 0.00 knots Slack
Sun -- 03:33 PM EDT 1.87 knots Max Flood
Sun -- 04:51 PM EDT Moonrise
Sun -- 07:17 PM EDT -0.00 knots Slack
Sun -- 08:16 PM EDT Sunset
Sun -- 10:58 PM EDT -1.86 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Savannah River Entrance, Georgia Current, knots
| 12 am |
| -1 |
| 1 am |
| 0.1 |
| 2 am |
| 1.1 |
| 3 am |
| 1.6 |
| 4 am |
| 1.6 |
| 5 am |
| 1.2 |
| 6 am |
| 0.7 |
| 7 am |
| -0.2 |
| 8 am |
| -1 |
| 9 am |
| -1.4 |
| 10 am |
| -1.5 |
| 11 am |
| -1.4 |
| 12 pm |
| -0.8 |
| 1 pm |
| 0.2 |
| 2 pm |
| 1.2 |
| 3 pm |
| 1.8 |
| 4 pm |
| 1.8 |
| 5 pm |
| 1.5 |
| 6 pm |
| 1 |
| 7 pm |
| 0.3 |
| 8 pm |
| -0.7 |
| 9 pm |
| -1.4 |
| 10 pm |
| -1.7 |
| 11 pm |
| -1.9 |
Charleston, SC,
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