Monday, June14, 2021
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Marine Weather and Tides
Moncks Corner, SC

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:09AMSunset 8:31PM Monday June 14, 2021 11:51 PM EDT (03:51 UTC) Moonrise 8:42AMMoonset 11:07PM Illumination 26% Phase: Waxing Crescent; Moon at 5 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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AMZ330 Charleston Harbor- 935 Pm Edt Mon Jun 14 2021
Tonight..S winds 10 kt with gusts to 20 kt, becoming sw late.
Tue..SW winds 5 to 10 kt. A slight chance of showers and tstms in the afternoon.
Tue night..S winds 5 to 10 kt, becoming W after midnight. A slight chance of showers and tstms in the evening.
Wed..N winds 5 kt, becoming se in the afternoon.
Wed night..S winds 5 kt.
Thu..N winds 5 kt, becoming E in the afternoon.
Thu night..SE winds 5 kt.
Fri..SE winds 5 to 10 kt.
Fri night..S winds 10 kt.
Sat..SW winds 10 kt. A slight chance of showers and tstms.
Sat night..SW winds 10 kt. A slight chance of showers and tstms. Mariners are reminded that winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 82 degrees.
AMZ300 935 Pm Edt Mon Jun 14 2021
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A cold front will approach the region by the middle of this week.


7 Day Forecast for Marine Location Near Moncks Corner, SC
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location: 33.1, -79.95     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 150149 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 949 PM EDT Mon Jun 14 2021

SYNOPSIS. A cold front will approach the region by the middle of this week. The front should stall south of the region though late week.

NEAR TERM /UNTIL 6 AM TUESDAY MORNING/. Late Monday evening: Multicell thunderstorms advancing through the SC Midlands toward the southeast should hold together for a few more hours and could clip northern sections of Colleton, Dorchester and Berkeley Counties after 11 pm. Upstream radar trends, MLCape values 1500-2000 J/kg and downdraft CAPE values exceeding 1000 J/kg suggest some potential for gusty winds and small hail across northern/inland sections, and brief/isolated damaging wind gusts and quarter sized hail cannot be ruled out. Due to the ongoing potential for thunderstorms to just bypass inland areas, limited PoPs to chance/slight chance, highest across northern Berkeley County tapered to around 15 percent along the Colleton/Allendale line. PoPs farther down Interstate 26 remain below 15 percent with no mention of showers/ thunderstorms, but we will continue to assess trends as outflow from ongoing convection could support new convection farther south/west.

After midnight, any thunderstorms should either move out of northern/inland counties or dissipate. Ahead of a cold front approaching the area from the west, southwest winds should help hold temperatures in the 70s overnight. Patchy ground fog is possible, but potential coverage/impact does not justify a mention in public forecasts.

SHORT TERM /6 AM TUESDAY MORNING THROUGH THURSDAY/. Tuesday: A cold front will approach the region in the afternoon hours. A mid-level shortwave, in addition to some right-entrance region jet dynamics, will provide a lifting mechanism for possible convection. However, convection may have a hard time firing off given the lack of deep layered moisture. Westerly flow will most likely keep the sea breeze pinned at the coast until after sunset, especially along coastal GA. The greatest chance for convection will be in the Charleston Tri County, where there are decent CAPE values and the sea breeze has a chance to move inland during daylight hours. There is a risk that we could see an isolated severe thunderstorm, with damaging winds and hail as the main threats. High temperatures Tuesday will reach into the low to mid 90s inland and upper 80s at the coast, with upper 60s inland to low 70s at the coast overnight.

Wednesday and Thursday: The cold front will stall to the south on Wednesday before moving further offshore Thursday. Behind the front will be much drier air, with some dew points only reaching into the 50s in inland GA. Forecast soundings show a significant cap over the region on both Wednesday and Thursday, limiting any shower/thunderstorm potential. Highs will be slightly cooler, with upper 80s to low 90s expected both days inland with mid to upper 80s at the coast.

LONG TERM /THURSDAY NIGHT THROUGH MONDAY/. High pressure will prevail over the region Thursday into the weekend. Low pressure (currently located near the Bay of Campeche) and its associated deep moisture are expected to shift northeast from the Gulf of Mexico. This system has the potential to bring rainfall to the region, beginning Saturday afternoon and through Monday. There are still many uncertain details associated with this period and the aforementioned low pressure. High temperatures will be in the low to mid 90s inland and upper 80s along the coast. Low temperatures will be in the low 70s inland and mid 70s at the coast.

AVIATION /02Z TUESDAY THROUGH SATURDAY/. Patchy ground fog could develop later tonight into early Tuesday. Also, thunderstorms could pass north of KCHS during the 3-6z time frame tonight, and thunderstorms could impact terminals, especially KCHS, Tuesday afternoon. However, the probability for any of these events remains too low to justify any mention within 0z VFR TAFs.

Extended Aviation Outlook: VFR.

MARINE. Tonight: Ahead of an approaching cold front, south winds should veer to the southwest and average 10-15 knots with occasional gusts as high as 20 kt through the overnight. Seas will average 2-4 feet, highest beyond 20 nm.

Tuesday through Saturday: A mid-level shortwave trough is forecast to form a low pressure off the GA coast Tuesday evening, along with a low-level jet due to a tightening pressure gradient. Small Craft Advisories could be needed for the GA waters for 25 knot wind gusts, especially 20-60nm where seas are forecast to reach 6ft as well. Thereafter, winds generally 5 to 10 knots with seas 2 to 3 feet.

TIDES/COASTAL FLOODING. Coastal Flooding: The late evening high tide is expected to remain just below 7 ft MLLW in Charleston Harbor, so a Coastal Flood Advisory will not be needed.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . None.



NEAR TERM . SPR SHORT TERM . CPM LONG TERM . CPM AVIATION . CPM/SPR MARINE . CPM/SPR TIDES/COASTAL FLOODING .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHTS1 22 mi58 min SSW 5.1 G 7 78°F 81°F1012.8 hPa
FBIS1 - Folly Island, SC 29 mi52 min SSW 11 G 13 79°F 1013.3 hPa (+1.1)
NIWS1 - North Inlet-Winyah Bay Reserve, SC 44 mi67 min SW 6 78°F 1012 hPa75°F
ACXS1 - ACE Basin Reserve, SC 46 mi67 min Calm 76°F 1013 hPa74°F

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Moncks Corner Berkeley County, SC7 mi57 minW 410.00 miFair73°F73°F100%1012.5 hPa
Charleston, Charleston Air Force Base, SC14 mi56 minSSW 510.00 miA Few Clouds75°F72°F90%1012.2 hPa
Mount Pleasant Regional-Faison Field, SC17 mi57 minN 010.00 miFair75°F75°F100%1012.5 hPa
Summerville Airport, SC18 mi57 minN 010.00 miFair77°F75°F94%1012.2 hPa

Link to 5 minute data for KMKS

Wind History from MKS (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW5CalmW4W3CalmCalmSW3S6SW8SW6SW6SW3SW4
1 day agoCalmN6NE5NE6NE7NE5NE8NE4NE6NE6NE5NE7NE6NE9N6NE6N8N6NE3NE5CalmCalmCalmCalm
2 days agoSW6SW7W6W6W5W6W5CalmW3W5W6W4W3W4W4SW6N5SW7CalmE5CalmCalmSW3Calm

Tide / Current Tables for Pimlico, West Branch, Cooper River, South Carolina
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Pimlico
Click for Map
Mon -- 02:15 AM EDT     1.95 feet High Tide
Mon -- 06:10 AM EDT     Sunrise
Mon -- 09:21 AM EDT     0.51 feet Low Tide
Mon -- 09:42 AM EDT     Moonrise
Mon -- 02:38 PM EDT     1.50 feet High Tide
Mon -- 08:30 PM EDT     Sunset
Mon -- 09:18 PM EDT     0.42 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.51.81.91.91.81.51.20.90.60.50.60.81.11.31.51.51.41.210.70.50.40.50.8

Tide / Current Tables for Charleston Harbor, off Fort Sumter, South Carolina Current (expired 1996-12-31)
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Charleston Harbor
Click for Map
Mon -- 02:57 AM EDT     -2.25 knots Max Ebb
Mon -- 06:10 AM EDT     Sunrise
Mon -- 06:30 AM EDT     0.00 knots Slack
Mon -- 08:49 AM EDT     1.53 knots Max Flood
Mon -- 09:42 AM EDT     Moonrise
Mon -- 11:45 AM EDT     -0.00 knots Slack
Mon -- 03:04 PM EDT     -1.98 knots Max Ebb
Mon -- 06:15 PM EDT     0.00 knots Slack
Mon -- 08:28 PM EDT     Sunset
Mon -- 09:07 PM EDT     2.13 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-1.2-2-2.3-2-1.3-0.50.51.31.51.10.5-0.2-0.9-1.6-2-1.7-1.1-0.20.71.72.11.91.2

Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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