Marine Weather and Tide Forecast for Meggett, SC
March 18, 2024 9:52 PM EDT (01:52 UTC) Change Location
Sunrise 7:23 AM Sunset 7:31 PM Moonrise 12:31 PM Moonset 2:48 AM |
AMZ330 Charleston Harbor- 720 Pm Edt Mon Mar 18 2024
.small craft advisory in effect until 6 am edt Tuesday - .
Tonight - W winds 20 to 25 kt early, becoming nw 20 to 25 kt with gusts to 30 kt. Waves 1 to 2 ft early, building to 2 to 3 ft.
Tue - NW winds 15 kt early, diminishing to 10 kt.
Tue night - SW winds 10 kt.
Wed - W winds 10 kt.
Wed night - SW winds 10 kt, becoming W after midnight.
Thu - N winds 10 to 15 kt, becoming E with gusts to 20 kt in the afternoon.
Thu night - E winds 10 to 15 kt with gusts to 20 kt. A chance of showers after midnight.
Fri - E winds 10 to 15 kt. Showers likely with a slight chance of tstms.
Fri night - NE winds 15 kt. Showers likely with a slight chance of tstms.
Sat - N winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers.
Sat night - N winds 15 to 20 kt. Waves 1 to 2 ft. 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 63 degrees.
winds and waves higher in and near tstms.
unless otherwise noted, waves 1 foot or less.
charleston harbor water temperature 63 degrees.
AMZ300 720 Pm Edt Mon Mar 18 2024
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia - High pressure will build over the area tonight and prevail into Thursday. A storm system could impact the area Friday and Saturday, before high pressure returns early next week.
Area Discussion for - Charleston, SC
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FXUS62 KCHS 182321 AFDCHS
Area Forecast Discussion National Weather Service Charleston SC 721 PM EDT Mon Mar 18 2024
SYNOPSIS
High pressure will build over the area tonight and prevail into Thursday. A storm system could impact the area Friday and Saturday, before high pressure returns early next week.
NEAR TERM /THROUGH TUESDAY/
Tonight: A short-wave trough will be swinging through the Carolinas and Mid Atlantic region during the course of the evening and off the coast overnight. Strongest larger scale forcing for ascent will be well to our north, although with so much dry air there won't be any rainfall across our region.
The main issue for us will be a period of gustier winds and decent cold advection as a large of high pressure (across the central CONUS today) expands into the Gulf Coast and southeast CONUS in the wake of the trough. Tightening pressure gradient (4-5 millibars across the CWA later this evening into the overnight) will lead to a period of gustier winds during that time with gusts of 25 to 30 mph anticipated across the region.
As a result, a Lake Wind Advisory is in effect for Lake Moultrie. Winds will be tapering off some through the overnight hours as cold advection slows down.
Temperature-wise: Strong cold advection drives the 850 mb temps down into the -2C to -4C range by morning. This is far below normal, which should be around 8.5C to 8.7C. Along with diminishing winds and clearing skies, lows will drop through the 30s for all areas away from the coast with the coldest readings well inland. Persistent winds and dry incoming air mass will limit frost development to no more than maybe a little patchy coverage late near the US-301 corridor.
SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/
Aloft, a large trough will pivot offshore Tuesday, shifting further away from the region while a zonal flow takes place across the Southeast United States through mid-week. At the sfc, high pressure across the South-central United States will extend east across Gulf Coast states and Carolinas Tuesday into Wednesday, before a cold front arrives from the north/northwest by early Thursday.
Conditions will remain dry locally through the middle of the week while a west-northwest downslope wind prevails along the eastern edge of the high centered to our west, even as the cold front pushes into the local area by early Thursday. Despite ample sfc heating under clear skies, temps will struggle to warm significantly on Tuesday while weak cold air advection wanes across the region. In general, high temps should only peak in the upper 50s to lower 60s (warmest across southeast Georgia). Although temps are cooler during peak heating, dry air should lead to afternoon RH values between 20- 25% away from the coast Tuesday afternoon. Sfc winds are expected to remain below 10 mph though, so fire wx concerns should be limited.
Sfc winds should slowly turn southwest Tuesday night into Wednesday, offsetting some radiational cooling at night and resulting in airmass modification on Wednesday ahead of an arriving cold front.
In general, Tuesday night lows should dip into the upper 30s/lower 40s inland to mid-upper 40s near the coast. On Wednesday, high temps should peak in the lower 70s with sunny conditions in place.
Guidance indicates a dry cold front pushing across the region Wednesday night, likely becoming positioned along or just south of the local area by daybreak Thursday. Despite northerly winds post fropa, sfc temps should peak in the lower 70s under partly sunny skies in advance of a low pressure system developing and shifting eastward across the northern Gulf of Mexico heading into late week.
LONG TERM /THURSDAY NIGHT THROUGH MONDAY/
The weather becomes more active as we head into late week, although still some forecast details to hash out. An upper wave is expected to pass across the Southeast United States early Friday through early Saturday, forcing an area of low pressure across the northeast Gulf to possibly strengthen while tracking over/near the Georgia and South Carolina coasts. PWATs should increase to around 1.25 inches as the system nears, and with strong isentropic ascent and a lingering front across the area, should promote showers to develop locally Thursday night into Friday morning. Scattered to numerous showers are now forecast to occur for most areas Friday and Friday evening, before precip activity trends offshore with the sfc low pulling away Saturday. Some guidance suggests some modest instability developing near the coast and offshore as the low tracks near the region, so a few embedded thunderstorms are possible along the immediate coast.
The aforementioned low should continue to depart the region late weekend as high pressure builds inland. Aside from some lingering showers Saturday morning into early afternoon, precip chances should become confined to the coastal waters by Saturday evening. Dry conditions should then prevail Sunday with high pressure in place.
AVIATION /00Z TUESDAY THROUGH SATURDAY/
VFR conditions anticipated through 00Z Wednesday. Gusty NW winds peaking around 25 kt or so much of tonight, will diminish to around 10 kt by 08-10Z Tuesday, as cold advection diminishes and the gradient slackens some.
Extended Aviation Outlook: VFR conditions are expected Tuesday night through Thursday. Flight restrictions are possible at KCHS/KJZI/KSAV terminals Thursday night into Friday as showers/low clouds develop with a passing low pressure system.
MARINE
Strong high pressure building into the region tonight will lead to a period of gusty northwesterly winds later this evening into the overnight hours. Gale force gusts are anticipated in all coastal waters outside of Charleston Harbor...Small Craft Advisory conditions in the Harbor. Seas will build this evening and peak during the early overnight hours, ranging from 3 ft within 10 NM from shore to 7 ft across portions of the outer GA waters.
Tuesday through Saturday: Marine conditions will improve on Tuesday, although there will be another brief wind surge Tuesday night with gusts to near advisory criteria, especially over the Charleston County waters. A somewhat enhanced pressure gradient could support elevated winds through late week, but conditions should remain just below Small Craft Advisory levels through Thursday. An area of low pressure is then expected to pass near/off the Southeast Coast Friday into Saturday, likely contributing to deteriorating marine conditions across local waters this weekend. Small Craft Advisories should be needed across most waters, but the track/strength of the low pressure system will play a large role in overall impacts along the Southeast Coast.
CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...Lake Wind Advisory until 8 AM EDT Tuesday for SCZ045.
MARINE...Small Craft Advisory until 6 AM EDT Tuesday for AMZ330.
Gale Warning until 9 AM EDT Tuesday for AMZ350-352-354-374.
Area Forecast Discussion National Weather Service Charleston SC 721 PM EDT Mon Mar 18 2024
SYNOPSIS
High pressure will build over the area tonight and prevail into Thursday. A storm system could impact the area Friday and Saturday, before high pressure returns early next week.
NEAR TERM /THROUGH TUESDAY/
Tonight: A short-wave trough will be swinging through the Carolinas and Mid Atlantic region during the course of the evening and off the coast overnight. Strongest larger scale forcing for ascent will be well to our north, although with so much dry air there won't be any rainfall across our region.
The main issue for us will be a period of gustier winds and decent cold advection as a large of high pressure (across the central CONUS today) expands into the Gulf Coast and southeast CONUS in the wake of the trough. Tightening pressure gradient (4-5 millibars across the CWA later this evening into the overnight) will lead to a period of gustier winds during that time with gusts of 25 to 30 mph anticipated across the region.
As a result, a Lake Wind Advisory is in effect for Lake Moultrie. Winds will be tapering off some through the overnight hours as cold advection slows down.
Temperature-wise: Strong cold advection drives the 850 mb temps down into the -2C to -4C range by morning. This is far below normal, which should be around 8.5C to 8.7C. Along with diminishing winds and clearing skies, lows will drop through the 30s for all areas away from the coast with the coldest readings well inland. Persistent winds and dry incoming air mass will limit frost development to no more than maybe a little patchy coverage late near the US-301 corridor.
SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/
Aloft, a large trough will pivot offshore Tuesday, shifting further away from the region while a zonal flow takes place across the Southeast United States through mid-week. At the sfc, high pressure across the South-central United States will extend east across Gulf Coast states and Carolinas Tuesday into Wednesday, before a cold front arrives from the north/northwest by early Thursday.
Conditions will remain dry locally through the middle of the week while a west-northwest downslope wind prevails along the eastern edge of the high centered to our west, even as the cold front pushes into the local area by early Thursday. Despite ample sfc heating under clear skies, temps will struggle to warm significantly on Tuesday while weak cold air advection wanes across the region. In general, high temps should only peak in the upper 50s to lower 60s (warmest across southeast Georgia). Although temps are cooler during peak heating, dry air should lead to afternoon RH values between 20- 25% away from the coast Tuesday afternoon. Sfc winds are expected to remain below 10 mph though, so fire wx concerns should be limited.
Sfc winds should slowly turn southwest Tuesday night into Wednesday, offsetting some radiational cooling at night and resulting in airmass modification on Wednesday ahead of an arriving cold front.
In general, Tuesday night lows should dip into the upper 30s/lower 40s inland to mid-upper 40s near the coast. On Wednesday, high temps should peak in the lower 70s with sunny conditions in place.
Guidance indicates a dry cold front pushing across the region Wednesday night, likely becoming positioned along or just south of the local area by daybreak Thursday. Despite northerly winds post fropa, sfc temps should peak in the lower 70s under partly sunny skies in advance of a low pressure system developing and shifting eastward across the northern Gulf of Mexico heading into late week.
LONG TERM /THURSDAY NIGHT THROUGH MONDAY/
The weather becomes more active as we head into late week, although still some forecast details to hash out. An upper wave is expected to pass across the Southeast United States early Friday through early Saturday, forcing an area of low pressure across the northeast Gulf to possibly strengthen while tracking over/near the Georgia and South Carolina coasts. PWATs should increase to around 1.25 inches as the system nears, and with strong isentropic ascent and a lingering front across the area, should promote showers to develop locally Thursday night into Friday morning. Scattered to numerous showers are now forecast to occur for most areas Friday and Friday evening, before precip activity trends offshore with the sfc low pulling away Saturday. Some guidance suggests some modest instability developing near the coast and offshore as the low tracks near the region, so a few embedded thunderstorms are possible along the immediate coast.
The aforementioned low should continue to depart the region late weekend as high pressure builds inland. Aside from some lingering showers Saturday morning into early afternoon, precip chances should become confined to the coastal waters by Saturday evening. Dry conditions should then prevail Sunday with high pressure in place.
AVIATION /00Z TUESDAY THROUGH SATURDAY/
VFR conditions anticipated through 00Z Wednesday. Gusty NW winds peaking around 25 kt or so much of tonight, will diminish to around 10 kt by 08-10Z Tuesday, as cold advection diminishes and the gradient slackens some.
Extended Aviation Outlook: VFR conditions are expected Tuesday night through Thursday. Flight restrictions are possible at KCHS/KJZI/KSAV terminals Thursday night into Friday as showers/low clouds develop with a passing low pressure system.
MARINE
Strong high pressure building into the region tonight will lead to a period of gusty northwesterly winds later this evening into the overnight hours. Gale force gusts are anticipated in all coastal waters outside of Charleston Harbor...Small Craft Advisory conditions in the Harbor. Seas will build this evening and peak during the early overnight hours, ranging from 3 ft within 10 NM from shore to 7 ft across portions of the outer GA waters.
Tuesday through Saturday: Marine conditions will improve on Tuesday, although there will be another brief wind surge Tuesday night with gusts to near advisory criteria, especially over the Charleston County waters. A somewhat enhanced pressure gradient could support elevated winds through late week, but conditions should remain just below Small Craft Advisory levels through Thursday. An area of low pressure is then expected to pass near/off the Southeast Coast Friday into Saturday, likely contributing to deteriorating marine conditions across local waters this weekend. Small Craft Advisories should be needed across most waters, but the track/strength of the low pressure system will play a large role in overall impacts along the Southeast Coast.
CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...Lake Wind Advisory until 8 AM EDT Tuesday for SCZ045.
MARINE...Small Craft Advisory until 6 AM EDT Tuesday for AMZ330.
Gale Warning until 9 AM EDT Tuesday for AMZ350-352-354-374.
Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
ACXS1 - ACE Basin Reserve, SC | 13 mi | 67 min | WNW 1.9 | 61°F | 29.86 | 37°F | ||
CHTS1 | 20 mi | 52 min | WNW 11G | 63°F | 63°F | 29.83 | ||
41067 | 30 mi | 67 min | 62°F | 2 ft | ||||
41029 - Capers Nearshore (CAP 2) | 35 mi | 104 min | WNW 18G | 64°F | 29.75 | 48°F | ||
41076 | 35 mi | 50 min | 3 ft | |||||
41065 | 36 mi | 90 min | 2 ft |
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Airport Reports
EDIT (hide/show)  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 | 17 min | WNW 10G17 | 10 sm | A Few Clouds | 61°F | 32°F | 34% | 29.84 | |
KCHS CHARLESTON AFB/INTL,SC | 19 sm | 56 min | W 10G22 | 10 sm | Clear | 63°F | 30°F | 29% | 29.82 | |
KRBW LOWCOUNTRY RGNL,SC | 24 sm | 17 min | WNW 10G15 | 10 sm | Clear | 57°F | 28°F | 33% | 29.89 |
Tide / Current for Lower Toogoodoo Creek, 2 mi. above entrance, South Carolina
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Lower Toogoodoo Creek
Click for Map
Mon -- 03:48 AM EDT Moonset
Mon -- 05:03 AM EDT 6.59 feet High Tide
Mon -- 07:26 AM EDT Sunrise
Mon -- 10:46 AM EDT 1.34 feet Low Tide
Mon -- 01:31 PM EDT Moonrise
Mon -- 05:35 PM EDT 5.40 feet High Tide
Mon -- 07:31 PM EDT Sunset
Mon -- 10:53 PM EDT 0.90 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 03:48 AM EDT Moonset
Mon -- 05:03 AM EDT 6.59 feet High Tide
Mon -- 07:26 AM EDT Sunrise
Mon -- 10:46 AM EDT 1.34 feet Low Tide
Mon -- 01:31 PM EDT Moonrise
Mon -- 05:35 PM EDT 5.40 feet High Tide
Mon -- 07:31 PM EDT Sunset
Mon -- 10:53 PM EDT 0.90 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Lower Toogoodoo Creek, 2 mi. above entrance, South Carolina, Tide feet
12 am |
2.2 |
1 am |
3.4 |
2 am |
4.5 |
3 am |
5.5 |
4 am |
6.3 |
5 am |
6.6 |
6 am |
6.2 |
7 am |
5.2 |
8 am |
3.9 |
9 am |
2.6 |
10 am |
1.6 |
11 am |
1.4 |
12 pm |
1.7 |
1 pm |
2.4 |
2 pm |
3.2 |
3 pm |
4.1 |
4 pm |
4.8 |
5 pm |
5.3 |
6 pm |
5.3 |
7 pm |
4.7 |
8 pm |
3.6 |
9 pm |
2.3 |
10 pm |
1.3 |
11 pm |
0.9 |
Charleston Harbor Entrance
Click for Map
Mon -- 03:46 AM EDT Moonset
Mon -- 04:02 AM EDT -0.00 knots Slack
Mon -- 07:20 AM EDT -1.73 knots Max Ebb
Mon -- 07:25 AM EDT Sunrise
Mon -- 10:31 AM EDT 0.00 knots Slack
Mon -- 12:21 PM EDT 0.86 knots Max Flood
Mon -- 01:29 PM EDT Moonrise
Mon -- 04:15 PM EDT -0.00 knots Slack
Mon -- 07:30 PM EDT Sunset
Mon -- 07:43 PM EDT -1.44 knots Max Ebb
Mon -- 10:46 PM EDT 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 03:46 AM EDT Moonset
Mon -- 04:02 AM EDT -0.00 knots Slack
Mon -- 07:20 AM EDT -1.73 knots Max Ebb
Mon -- 07:25 AM EDT Sunrise
Mon -- 10:31 AM EDT 0.00 knots Slack
Mon -- 12:21 PM EDT 0.86 knots Max Flood
Mon -- 01:29 PM EDT Moonrise
Mon -- 04:15 PM EDT -0.00 knots Slack
Mon -- 07:30 PM EDT Sunset
Mon -- 07:43 PM EDT -1.44 knots Max Ebb
Mon -- 10:46 PM EDT 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Charleston Harbor Entrance, South Carolina Current, knots
12 am |
1.1 |
1 am |
1 |
2 am |
0.9 |
3 am |
0.6 |
4 am |
0 |
5 am |
-0.7 |
6 am |
-1.3 |
7 am |
-1.7 |
8 am |
-1.6 |
9 am |
-1.2 |
10 am |
-0.4 |
11 am |
0.4 |
12 pm |
0.8 |
1 pm |
0.8 |
2 pm |
0.7 |
3 pm |
0.5 |
4 pm |
0.1 |
5 pm |
-0.4 |
6 pm |
-0.9 |
7 pm |
-1.3 |
8 pm |
-1.4 |
9 pm |
-1.1 |
10 pm |
-0.6 |
11 pm |
0.2 |
Charleston, SC,
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