Marine Weather and Tide Forecast for Meggett, SC
December 10, 2023 3:30 PM EST (20:30 UTC)
Sunrise 7:09AM Sunset 5:15PM Moonrise 4:48AM Moonset 3:23PM
AMZ330 Charleston Harbor- 248 Pm Est Sun Dec 10 2023
.small craft advisory in effect through late tonight...
Tonight..SW winds 15 to 20 kt with gusts to 25 kt, increasing to 25 kt with gusts to 30 kt late this evening, then becoming nw with gusts to 30 kt after midnight, diminishing to 15 to 20 kt with gusts to 25 kt late. Waves 2 to 3 ft. A chance of tstms this evening. Showers until early morning, then a slight chance of showers late.
Mon..NW winds 10 to 15 kt.
Mon night..N winds 5 to 10 kt.
Tue..NE winds 5 to 10 kt.
Tue night..NE winds 10 kt.
Wed..NE winds 10 kt.
Wed night..NE winds 10 to 15 kt with gusts to 25 kt.
Thu..NE winds 15 to 20 kt. Waves 1 to 2 ft.
Thu night..NE winds 15 kt.
Fri..NE winds 15 kt.
Fri night..NE winds 15 kt. A slight chance of showers.
winds and waves higher in and near tstms.
unless otherwise noted, waves 1 foot or less.
charleston harbor water temperature 60 degrees.
.small craft advisory in effect through late tonight...
Tonight..SW winds 15 to 20 kt with gusts to 25 kt, increasing to 25 kt with gusts to 30 kt late this evening, then becoming nw with gusts to 30 kt after midnight, diminishing to 15 to 20 kt with gusts to 25 kt late. Waves 2 to 3 ft. A chance of tstms this evening. Showers until early morning, then a slight chance of showers late.
Mon..NW winds 10 to 15 kt.
Mon night..N winds 5 to 10 kt.
Tue..NE winds 5 to 10 kt.
Tue night..NE winds 10 kt.
Wed..NE winds 10 kt.
Wed night..NE winds 10 to 15 kt with gusts to 25 kt.
Thu..NE winds 15 to 20 kt. Waves 1 to 2 ft.
Thu night..NE winds 15 kt.
Fri..NE winds 15 kt.
Fri night..NE winds 15 kt. A slight chance of showers.
winds and waves higher in and near tstms.
unless otherwise noted, waves 1 foot or less.
charleston harbor water temperature 60 degrees.
AMZ300 248 Pm Est Sun Dec 10 2023
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A strong cold front will cross the area this evening, followed by high pressure through late this week.
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A strong cold front will cross the area this evening, followed by high pressure through late this week.
Area Discussion for - Charleston, SC
(on/off) HelpNOTE: mouseover dotted underlined text for definition
FXUS62 KCHS 102001 AFDCHS
Area Forecast Discussion National Weather Service Charleston SC 301 PM EST Sun Dec 10 2023
SYNOPSIS
A strong cold front will cross the area this evening, followed by high pressure through late this week.
NEAR TERM /UNTIL 6 AM MONDAY MORNING/
This Afternoon: Aloft, a negatively tilted trough is positioned over the Mississippi Valley region, with a 250 mb jet streak located downstream. Surface analysis from 12Z showed a cold front positioned from the upstate of SC extending SW into the FL Panhandle. Ahead of the cold front was a pool of moisture, with dew points generally in the low to mid 60s across the local forecast area. As the afternoon progresses dew points are expected to rise a few more degrees, possibly reaching into the upper 60s before the main line of precipitation arrives this afternoon. The aforementioned cold front will continue it's eastward trek, likely pushing through the forecast area overnight. Prior to FROPA, a line of showers and thunderstorms is poised to push through the region this afternoon and into this evening.
The Charleston area actually saw a bout of sunshine this morning, with temperatures quickly shooting up to around 76F. It remains to be seen if this unexpected sunshine with impact the instability levels at the surface with regards to the severe weather threat this afternoon. The 12Z CHS RAOB Sounding showed 298 J/kg of SB CAPE, with forecast soundings depicting anywhere from a couple hundred to 600-700 J/kg of SB CAPE by around 19Z.
However, even with meager surface instability, the dynamics aloft may be enough to trigger some strong to severe thunderstorms across the forecast area later this afternoon and into this evening. Shear values are impressive, with the 12Z CHS RAOB Sounding showing 33 knots of effective shear. Model soundings show that this value could increase to around 40 knots later this afternoon. While the shear is plentiful, model hodographs suggest that the flow is unidirectional, which would result in a main threat of damaging wind gusts. The region continues to be outlooked in a Marginal Risk from SPC, with a Slight Risk just to the north.
The PWAT value with the 12Z CHS RAOB Sounding was 1.34 inches, which according to SPC Climatology is just above the 90th percentile for this date. Generally rainfall amounts this afternoon and evening will be right around 1 inch, with 1-1.5 inches across far inland areas.
Lake Wind: Winds are expected to gust this afternoon around 25 mph ahead of the approaching cold front as winds aloft become mixed down to the surface. A Lake Wind Advisory is in effect for Lake Moultrie from 1 PM through around midnight tonight.
Tonight: The main line of showers and thunderstorms should rapidly push offshore this evening, with some lingering showers possible through around midnight, when the cold front pushes offshore. In the wake of the cold front strong CAA will dominate across the forecast area, with temperatures by Monday morning in the mid 30s inland and low to mid 40s along the coastline.
SHORT TERM /6 AM MONDAY MORNING THROUGH WEDNESDAY/
Monday: The strong cold front will be well offshore by sunrise Monday with strong post-frontal cold air advection (CAA) in progress. The intensity of the CAA will wane through the day with 850 hPa temperatures settling into the 2-5C range by afternoon.
There will be somewhat of a weak downslope component in the lee of the southern Appalachians, but it will still be a chilly day despite full insolation. Highs will only reach within a degree or two of 55 area wide with early breezy conditions gradually diminishing as the day progresses. Sunday night will be a bit chilly under clear skies.
The boundary layer may fully decouple across the interior while winds stay up a bit along the coast where the pressure gradient is progged to tighten a bit overnight in response to the center of the surface high bridging the Blue Ridge. Favored the cooler side of the guidance across the interior and closer to the guidance mean at the coast. Lows will range from around 30 well inland adjacent to the CSRA and Southern Midlands to the mid 40s along the beaches where northeast winds will have a bit more of a moderating influence.
Tuesday and Wednesday: High pressure will dominate through this period as a mostly zonal flow prevails aloft. A weak coastal trough will dry and form just offshore by Wednesday, but any associated shower activity should remain well offshore. While the main low- level moisture channel will be directed into Northeast Florida, there could be a gradual increase in cloud cover with some degree of marine-based stratocumulus pushing inland, mainly across the coastal counties (especially coastal Georgia) coupled with thickening cirrus aloft. Temperatures will begin to slowly moderate both days with highs warming into the mid-upper 50s Tuesday with upper 50s/lower 60s Wednesday. Lows Wednesday morning will range from around freezing well inland to the upper 40s/near 50 at the beaches.
LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/
Quiet conditions will prevail for much of the week. The forecast becomes a bit more uncertain Friday into Saturday some data suggesting a storm system will develop over the Gulf of Mexico and impact parts of the Southeast U.S. coast during the upcoming weekend. The forecast was closely aligned with the 10/13z NBM for now until trends can become better established.
AVIATION /20Z SUNDAY THROUGH FRIDAY/
VFR conditions at KCHS/KJZI/KSAV to start the 18Z TAF period. A cold front will approach from the west today, ushering in a line of showers and thunderstorms this afternoon and into this evening. Flight restrictions are likely with the showers and thunderstorms, which is outlined in a TEMPO group at each of the terminals. Outside of the showers and storms, gusty SW will be prevalent this afternoon, with gusts approaching 25 knots. The cold front will push off the SE coast around midnight tonight, with a shift in winds from the SW to the NW by daybreak. Low cigs are expected to linger in the wake of the cold front through a portion of the overnight, with the drier air not arriving until closer to day break. With the arrival of the drier air clouds will clear out from west to east, with clear skies expected around this time tomorrow.
Extended Aviation Outlook: There are no concerns at this time.
MARINE
This Afternoon: The pressure gradient at the surface will continue to pinch as a cold front approaches from the west.
Southwest winds are forecast to gust in the 25-30 knot range this afternoon across the Charleston Harbor, the SC nearshore waters, and the 20-60 nm offshore GA waters where a Small Craft Advisory is in effect through this evening. Seas will also increase this afternoon, with wave heights generally 4-6 across the SC nearshore and the 20-60 nm offshore GA waters and 3-4 elsewhere. A line of showers and thunderstorms is expected to push through the marine waters this evening associated with the cold front. Some of these storms may be strong to severe, possibly necessitating the issuance of Special Marine Warnings.
Tonight: The cold front will push through the region around midnight tonight, with a surge in winds expected across all marine zones as strong CAA develops behind the front. Winds are forecast to gust between 35 to 40 knots and Gale Warnings have been issued for all marine waters outside of the Charleston Harbor through early Monday morning.
Monday through Friday: Conditions will rapidly improve across the marine area Monday as high pressure builds in from the west and post- frontal CAA wanes. A modest northeast flow event will develop by mid- week as the pressure gradient tightens in response to sprawling high pressure building into North Carolina and the formation of a subtle coastal trough just offshore. Both winds and seas will respond with a return to Small Craft Advisory levels possibly as early as Wednesday which will likely linger into Friday.
EQUIPMENT
KCLX remains operational, but level 2 data is not being distributed to external users due to an internal hardware failure. We are still awaiting the arrival of new parts to resolve this problem. Until then, level 2 data will not be available. Radar data is available for all connected AWIPS users. Level 3 data is also available for some external users.
CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...Lake Wind Advisory until 1 AM EST Monday for SCZ045.
MARINE...Small Craft Advisory until 6 AM EST Monday for AMZ330.
Small Craft Advisory until 6 PM EST this evening for AMZ350- 374.
Gale Warning from 6 PM this evening to 3 AM EST Monday for AMZ350-352-354.
Gale Warning from 6 PM this evening to 6 AM EST Monday for AMZ374.
Area Forecast Discussion National Weather Service Charleston SC 301 PM EST Sun Dec 10 2023
SYNOPSIS
A strong cold front will cross the area this evening, followed by high pressure through late this week.
NEAR TERM /UNTIL 6 AM MONDAY MORNING/
This Afternoon: Aloft, a negatively tilted trough is positioned over the Mississippi Valley region, with a 250 mb jet streak located downstream. Surface analysis from 12Z showed a cold front positioned from the upstate of SC extending SW into the FL Panhandle. Ahead of the cold front was a pool of moisture, with dew points generally in the low to mid 60s across the local forecast area. As the afternoon progresses dew points are expected to rise a few more degrees, possibly reaching into the upper 60s before the main line of precipitation arrives this afternoon. The aforementioned cold front will continue it's eastward trek, likely pushing through the forecast area overnight. Prior to FROPA, a line of showers and thunderstorms is poised to push through the region this afternoon and into this evening.
The Charleston area actually saw a bout of sunshine this morning, with temperatures quickly shooting up to around 76F. It remains to be seen if this unexpected sunshine with impact the instability levels at the surface with regards to the severe weather threat this afternoon. The 12Z CHS RAOB Sounding showed 298 J/kg of SB CAPE, with forecast soundings depicting anywhere from a couple hundred to 600-700 J/kg of SB CAPE by around 19Z.
However, even with meager surface instability, the dynamics aloft may be enough to trigger some strong to severe thunderstorms across the forecast area later this afternoon and into this evening. Shear values are impressive, with the 12Z CHS RAOB Sounding showing 33 knots of effective shear. Model soundings show that this value could increase to around 40 knots later this afternoon. While the shear is plentiful, model hodographs suggest that the flow is unidirectional, which would result in a main threat of damaging wind gusts. The region continues to be outlooked in a Marginal Risk from SPC, with a Slight Risk just to the north.
The PWAT value with the 12Z CHS RAOB Sounding was 1.34 inches, which according to SPC Climatology is just above the 90th percentile for this date. Generally rainfall amounts this afternoon and evening will be right around 1 inch, with 1-1.5 inches across far inland areas.
Lake Wind: Winds are expected to gust this afternoon around 25 mph ahead of the approaching cold front as winds aloft become mixed down to the surface. A Lake Wind Advisory is in effect for Lake Moultrie from 1 PM through around midnight tonight.
Tonight: The main line of showers and thunderstorms should rapidly push offshore this evening, with some lingering showers possible through around midnight, when the cold front pushes offshore. In the wake of the cold front strong CAA will dominate across the forecast area, with temperatures by Monday morning in the mid 30s inland and low to mid 40s along the coastline.
SHORT TERM /6 AM MONDAY MORNING THROUGH WEDNESDAY/
Monday: The strong cold front will be well offshore by sunrise Monday with strong post-frontal cold air advection (CAA) in progress. The intensity of the CAA will wane through the day with 850 hPa temperatures settling into the 2-5C range by afternoon.
There will be somewhat of a weak downslope component in the lee of the southern Appalachians, but it will still be a chilly day despite full insolation. Highs will only reach within a degree or two of 55 area wide with early breezy conditions gradually diminishing as the day progresses. Sunday night will be a bit chilly under clear skies.
The boundary layer may fully decouple across the interior while winds stay up a bit along the coast where the pressure gradient is progged to tighten a bit overnight in response to the center of the surface high bridging the Blue Ridge. Favored the cooler side of the guidance across the interior and closer to the guidance mean at the coast. Lows will range from around 30 well inland adjacent to the CSRA and Southern Midlands to the mid 40s along the beaches where northeast winds will have a bit more of a moderating influence.
Tuesday and Wednesday: High pressure will dominate through this period as a mostly zonal flow prevails aloft. A weak coastal trough will dry and form just offshore by Wednesday, but any associated shower activity should remain well offshore. While the main low- level moisture channel will be directed into Northeast Florida, there could be a gradual increase in cloud cover with some degree of marine-based stratocumulus pushing inland, mainly across the coastal counties (especially coastal Georgia) coupled with thickening cirrus aloft. Temperatures will begin to slowly moderate both days with highs warming into the mid-upper 50s Tuesday with upper 50s/lower 60s Wednesday. Lows Wednesday morning will range from around freezing well inland to the upper 40s/near 50 at the beaches.
LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/
Quiet conditions will prevail for much of the week. The forecast becomes a bit more uncertain Friday into Saturday some data suggesting a storm system will develop over the Gulf of Mexico and impact parts of the Southeast U.S. coast during the upcoming weekend. The forecast was closely aligned with the 10/13z NBM for now until trends can become better established.
AVIATION /20Z SUNDAY THROUGH FRIDAY/
VFR conditions at KCHS/KJZI/KSAV to start the 18Z TAF period. A cold front will approach from the west today, ushering in a line of showers and thunderstorms this afternoon and into this evening. Flight restrictions are likely with the showers and thunderstorms, which is outlined in a TEMPO group at each of the terminals. Outside of the showers and storms, gusty SW will be prevalent this afternoon, with gusts approaching 25 knots. The cold front will push off the SE coast around midnight tonight, with a shift in winds from the SW to the NW by daybreak. Low cigs are expected to linger in the wake of the cold front through a portion of the overnight, with the drier air not arriving until closer to day break. With the arrival of the drier air clouds will clear out from west to east, with clear skies expected around this time tomorrow.
Extended Aviation Outlook: There are no concerns at this time.
MARINE
This Afternoon: The pressure gradient at the surface will continue to pinch as a cold front approaches from the west.
Southwest winds are forecast to gust in the 25-30 knot range this afternoon across the Charleston Harbor, the SC nearshore waters, and the 20-60 nm offshore GA waters where a Small Craft Advisory is in effect through this evening. Seas will also increase this afternoon, with wave heights generally 4-6 across the SC nearshore and the 20-60 nm offshore GA waters and 3-4 elsewhere. A line of showers and thunderstorms is expected to push through the marine waters this evening associated with the cold front. Some of these storms may be strong to severe, possibly necessitating the issuance of Special Marine Warnings.
Tonight: The cold front will push through the region around midnight tonight, with a surge in winds expected across all marine zones as strong CAA develops behind the front. Winds are forecast to gust between 35 to 40 knots and Gale Warnings have been issued for all marine waters outside of the Charleston Harbor through early Monday morning.
Monday through Friday: Conditions will rapidly improve across the marine area Monday as high pressure builds in from the west and post- frontal CAA wanes. A modest northeast flow event will develop by mid- week as the pressure gradient tightens in response to sprawling high pressure building into North Carolina and the formation of a subtle coastal trough just offshore. Both winds and seas will respond with a return to Small Craft Advisory levels possibly as early as Wednesday which will likely linger into Friday.
EQUIPMENT
KCLX remains operational, but level 2 data is not being distributed to external users due to an internal hardware failure. We are still awaiting the arrival of new parts to resolve this problem. Until then, level 2 data will not be available. Radar data is available for all connected AWIPS users. Level 3 data is also available for some external users.
CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...Lake Wind Advisory until 1 AM EST Monday for SCZ045.
MARINE...Small Craft Advisory until 6 AM EST Monday for AMZ330.
Small Craft Advisory until 6 PM EST this evening for AMZ350- 374.
Gale Warning from 6 PM this evening to 3 AM EST Monday for AMZ350-352-354.
Gale Warning from 6 PM this evening to 6 AM EST Monday for AMZ374.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| ACXS1 - ACE Basin Reserve, SC | 13 mi | 106 min | SW 2.9 | 73°F | 29.89 | 65°F | ||
| CHTS1 | 20 mi | 43 min | SW 7G | 67°F | 60°F | 29.83 | ||
| FBIS1 - Folly Island, SC | 21 mi | 31 min | SW 7G | 63°F | 29.83 | 63°F | ||
| 41067 | 30 mi | 66 min | 61°F | 3 ft | ||||
| 41029 - Capers Nearshore (CAP 2) | 35 mi | 83 min | SW 12G | 65°F | 29.81 | 63°F | ||
| FPKG1 - 8670870 - Fort Pulaski, GA | 57 mi | 43 min | SSW 7G | 66°F | 60°F | 29.83 |
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 |
| KJZI CHARLESTON EXECUTIVE,SC | 15 sm | 15 min | SW 05G10 | 9 sm | Overcast | 68°F | 68°F | 100% | 29.81 | |
| KCHS CHARLESTON AFB/INTL,SC | 19 sm | 34 min | SSW 08 | 10 sm | Mostly Cloudy | 70°F | 66°F | 88% | 29.81 | |
| KRBW LOWCOUNTRY RGNL,SC | 24 sm | 15 min | SW 09G15 | 10 sm | Partly Cloudy | Lt Rain | 68°F | 64°F | 88% | 29.81 |
Wind History from JZI
(wind in knots)Tide / Current for Lower Toogoodoo Creek, 2 mi. above entrance, South Carolina
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Lower Toogoodoo Creek
Click for Map
Sun -- 12:05 AM EST 0.54 feet Low Tide
Sun -- 04:47 AM EST Moonrise
Sun -- 07:06 AM EST 7.29 feet High Tide
Sun -- 07:12 AM EST Sunrise
Sun -- 12:49 PM EST 0.73 feet Low Tide
Sun -- 03:22 PM EST Moonset
Sun -- 05:15 PM EST Sunset
Sun -- 07:13 PM EST 6.14 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 12:05 AM EST 0.54 feet Low Tide
Sun -- 04:47 AM EST Moonrise
Sun -- 07:06 AM EST 7.29 feet High Tide
Sun -- 07:12 AM EST Sunrise
Sun -- 12:49 PM EST 0.73 feet Low Tide
Sun -- 03:22 PM EST Moonset
Sun -- 05:15 PM EST Sunset
Sun -- 07:13 PM EST 6.14 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Lower Toogoodoo Creek, 2 mi. above entrance, South Carolina, Tide feet
| 12 am |
| 0.5 |
| 1 am |
| 0.9 |
| 2 am |
| 1.9 |
| 3 am |
| 3.3 |
| 4 am |
| 4.8 |
| 5 am |
| 6.1 |
| 6 am |
| 6.9 |
| 7 am |
| 7.3 |
| 8 am |
| 6.9 |
| 9 am |
| 5.8 |
| 10 am |
| 4.1 |
| 11 am |
| 2.4 |
| 12 pm |
| 1.1 |
| 1 pm |
| 0.7 |
| 2 pm |
| 1.3 |
| 3 pm |
| 2.4 |
| 4 pm |
| 3.7 |
| 5 pm |
| 4.9 |
| 6 pm |
| 5.8 |
| 7 pm |
| 6.1 |
| 8 pm |
| 5.9 |
| 9 pm |
| 4.8 |
| 10 pm |
| 3.3 |
| 11 pm |
| 1.8 |
Charleston Harbor Entrance
Click for Map
Sun -- 02:27 AM EST 1.56 knots Max Flood
Sun -- 04:46 AM EST Moonrise
Sun -- 06:17 AM EST -0.00 knots Slack
Sun -- 07:10 AM EST Sunrise
Sun -- 09:32 AM EST -2.30 knots Max Ebb
Sun -- 12:37 PM EST 0.00 knots Slack
Sun -- 02:46 PM EST 1.44 knots Max Flood
Sun -- 03:20 PM EST Moonset
Sun -- 05:13 PM EST Sunset
Sun -- 06:06 PM EST -0.00 knots Slack
Sun -- 09:31 PM EST -2.01 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 02:27 AM EST 1.56 knots Max Flood
Sun -- 04:46 AM EST Moonrise
Sun -- 06:17 AM EST -0.00 knots Slack
Sun -- 07:10 AM EST Sunrise
Sun -- 09:32 AM EST -2.30 knots Max Ebb
Sun -- 12:37 PM EST 0.00 knots Slack
Sun -- 02:46 PM EST 1.44 knots Max Flood
Sun -- 03:20 PM EST Moonset
Sun -- 05:13 PM EST Sunset
Sun -- 06:06 PM EST -0.00 knots Slack
Sun -- 09:31 PM EST -2.01 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Charleston Harbor Entrance, South Carolina Current, knots
| 12 am |
| 0.1 |
| 1 am |
| 1 |
| 2 am |
| 1.5 |
| 3 am |
| 1.5 |
| 4 am |
| 1.3 |
| 5 am |
| 0.9 |
| 6 am |
| 0.3 |
| 7 am |
| -0.7 |
| 8 am |
| -1.6 |
| 9 am |
| -2.2 |
| 10 am |
| -2.2 |
| 11 am |
| -1.6 |
| 12 pm |
| -0.7 |
| 1 pm |
| 0.4 |
| 2 pm |
| 1.2 |
| 3 pm |
| 1.4 |
| 4 pm |
| 1.1 |
| 5 pm |
| 0.7 |
| 6 pm |
| 0.1 |
| 7 pm |
| -0.7 |
| 8 pm |
| -1.5 |
| 9 pm |
| -1.9 |
| 10 pm |
| -1.9 |
| 11 pm |
| -1.4 |
Charleston, SC,
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