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Marine Weather and Tides James, SC Version 3.4

NOTICE 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.

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Sunrise 6:41AM

Sunset 6:21PM

Friday March 5, 2021 11:33 PM EST (04:33 UTC)

Moonrise 12:30AM

Moonset 10:58AM

Illumination 50%

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.

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7 Day Forecast for Marine Location Near James, SC

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Area Discussion for - Charleston, SC

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FXUS62 KCHS 060348 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 1048 PM EST Fri Mar 5 2021

SYNOPSIS. High pressure will prevail this weekend and through much of next week.

NEAR TERM /UNTIL 6 AM SATURDAY MORNING/. Tonight: Aloft, high cirrus clouds will continue to spread across the region as the left front quadrant of a passing h25 jet shifts across the Southeast. Although a light northeast sfc wind will be in place, high clouds will likely limit overall cooling potential through much of the night, even as a h5 shortwave rounds the southern base of a broad mid/upper lvl trough positioned across the Northeast United States. Despite a fair amount of moisture arriving in the mid-upper lvls along with mid-lvl forcing and upper-lvl divergence in place, the bulk of low-lvl moisture will remain south of the area where sfc low pressure tracks near an east-west oriented cold front. Model soundings, the most recent 00Z CHS sounding, and 10-15 degree sfc temp-dewpt spreads indicate a significant amount of dry air from the sfc to the 500mb lvl, supporting a dry forecast for all areas across southeast South Carolina and Southeast Georgia through the overnight period. In general, low temps should range in the low/mid 40s away from the coast with a few upper 30s possible across northern parts of Berkeley County.

SHORT TERM /6 AM SATURDAY MORNING THROUGH MONDAY/. High pressure will remain the dominant feature over the weekend and early next week. Dry weather is expected, with the possible exception being on Saturday when a few showers could brush the far southeast Georgia coast as a weak system passes well to the south. The main forecast concern for the period is the potential for frost or a freeze each morning. Favorable radiational cooling under clear skies and light winds will allow temperatures to fall into the low/mid 30s across most locations inland of the beaches. These temperatures are supportive of frost development, however relative humidity values are a bit low. Opted to maintain patchy frost in the forecast for now, but coverage could certainly be higher if conditions trend more favorably. In addition, freezing temperatures are possible across the far interior. Freeze Watches and/or Warnings could be needed. High temperatures will remain unseasonably cool as well, generally peaking in the mid to upper 50s over the weekend, then around 60/low 60s on Monday.

LONG TERM /MONDAY NIGHT THROUGH FRIDAY/. Models are in excellent agreement for the long term forecast. They keep high pressure off the coast, with it's periphery stretching into the Southeast U.S. Dry conditions with moderating temperatures are expected.

AVIATION /04Z SATURDAY THROUGH WEDNESDAY/. VFR conditions will prevail at both CHS and SAV terminals through 00Z Sunday.

Extended Aviation Outlook: VFR.

MARINE. Tonight: High pressure will persist across local waters while weak low pressure passes south of the region near a cold front. In general, east-northeast winds will average no higher than 10-15 kt early tonight, but are anticipated to increase slightly after midnight with the approach of a h5 shortwave from the west. Fair cold air advection across the waters will be in place late, but 1000 mb geostrophic flow is rather limited (~20 kt). Given the setup, expect winds to turn northeast after midnight with a slight surge in wind speeds gusting up to 20 kt at times. Seas should range between 2-3 ft across nearshore waters and around 4 ft across offshore Georgia waters.

Saturday through Wednesday: Elevated northeast to north winds are expected over the weekend, especially Saturday night into Sunday morning with strong pressure rises and cold air advection. The best chance for Small Craft Advisories will be across the outer Georgia waters for 25 kt wind gusts. Opted to hold off on issuance as conditions appear marginal at this time. Winds and seas will improve early next week as high pressure moves over the area and the pressure gradient relaxes. No additional marine headlines are expected.

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



NEAR TERM . DPB SHORT TERM . LONG TERM . AVIATION . DPB MARINE . DPB

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
NIWS1 - North Inlet-Winyah Bay Reserve, SC	26 mi	48 min	NW 1.9	42°F			1020 hPa	40°F
41029 - Capers Nearshore (CAP 2)	35 mi	25 min	E 3.9 G 7.8	54°F	56°F		1020 hPa
CHTS1	39 mi	45 min	ENE 5.1 G 5.1	52°F	58°F		1020.6 hPa
FBIS1 - Folly Island, SC	45 mi	33 min	E 5.1 G 5.1	54°F			1021.2 hPa (+1.3)
MROS1 - 8661070 - Springmaid Pier, SC	47 mi	45 min		46°F

Wind History for Charleston, SC

(wind in knots)    EDIT      (on/off)   Help

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NW5 G10

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Georgetown County Airport , SC	19 mi	38 min	N 0	10.00 mi	Fair	39°F	36°F	87%	1021 hPa
Moncks Corner Berkeley County, SC	21 mi	38 min	N 0	10.00 mi	Fair	45°F	41°F	87%	1020.3 hPa

Link to 5 minute data for KGGE

Wind History from GGE (wind in knots)

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Tide / Current Tables for Jamestown Bridge, Santee River, South Carolina

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Tide / Current Tables for Pleasant Hill Landing, Santee River, South Carolina

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Weather Map

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GEOS Local Image of    EDIT
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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