Friday, March5, 2021
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Marine Weather and Tides
Rockville, 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.

Sunrise 6:40AMSunset 6:21PM Friday March 5, 2021 8:33 PM EST (01:33 UTC) Moonrise 12:31AMMoonset 11:02AM Illumination 51% Phase: Third Quarter Moon; Moon at 22 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- 720 Pm Est Fri Mar 5 2021
Tonight..E winds 10 kt, becoming ne 10 to 15 kt.
Sat..NE winds 10 to 15 kt.
Sat night..NE winds 5 to 10 kt, becoming N 10 to 15 kt after midnight.
Sun..N winds 10 to 15 kt.
Sun night..N winds 5 to 10 kt.
Mon..N winds 10 kt, becoming E in the afternoon.
Mon night..E winds 5 kt.
Tue..E winds 5 to 10 kt.
Tue night..E winds 5 kt.
Wed..E winds 5 kt.
Wed night..SE winds 5 kt. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 58 degrees.
AMZ300 720 Pm Est Fri Mar 5 2021
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail this weekend and through much of next week.


7 Day Forecast for Marine Location Near Rockville, SC
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location: 32.6, -80.29     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 060034 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 734 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, a zonal flow will prevail during the first half of the night with high cirrus clouds associated with the left front quadrant of a passing h25 jet spreading across the region from the west. Although a light northeast sfc wind will be in place, high clouds will likely limit overall cooling potential early tonight, and even more so after midnight when mid-clouds arrive with an h5 shortwave rounding 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, model soundings along with the most recent chs sounding indicate a significant amount of dry air from the sfc to the 500mb lvl, which will likely keep all areas dry 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 /01Z 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 late this evening and through the overnight period behind a cold front positioned south of the area. 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, but 1000 mb geostrophic flow is rather limited (15- 25 kt). Given the setup, expect winds to turn northeast after midnight with a slight surge in wind speeds gusting up to 15-20 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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACXS1 - ACE Basin Reserve, SC 9 mi109 min Calm 51°F 1019 hPa42°F
FBIS1 - Folly Island, SC 22 mi34 min E 7 G 8 53°F 1019.9 hPa (+1.6)
41033 23 mi26 min E 12 G 16 55°F 56°F1018.7 hPa
CHTS1 23 mi46 min NNE 2.9 G 4.1 52°F 58°F1019.5 hPa
41029 - Capers Nearshore (CAP 2) 38 mi26 min E 5.8 G 9.7 53°F 56°F1019.1 hPa
FPKG1 - 8670870 - Fort Pulaski, GA 51 mi46 min E 8.9 G 11 56°F 58°F1019.2 hPa

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC17 mi39 minN 09.00 miFair48°F41°F76%1019.6 hPa
Beaufort County Airport, SC22 mi39 minENE 310.00 miFair52°F43°F72%1019.3 hPa
Beaufort, Marine Corps Air Station, SC24 mi38 minE 310.00 miFair53°F42°F66%1019.3 hPa

Link to 5 minute data for KJZI

Wind History from JZI (wind in knots)
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Last 24hrSW4SW3CalmW5CalmCalmNW4N6N4N5N6N11NE12
G18
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NE11E11E15E12E9E11E7E4--Calm
1 day agoCalmCalmCalmW4W4NW4W5NW3CalmW4NW4NW4N5N7NE74N7SE7S8S9S9SW4SW5SW6
2 days agoNE6NE7N7N10N10N7
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Tide / Current Tables for Steamboat Landing, Steamboat Creek, South Carolina
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Steamboat Landing
Click for Map
Fri -- 12:31 AM EST     Moonrise
Fri -- 01:23 AM EST     6.52 feet High Tide
Fri -- 06:43 AM EST     Sunrise
Fri -- 07:18 AM EST     0.27 feet Low Tide
Fri -- 11:01 AM EST     Moonset
Fri -- 01:40 PM EST     5.37 feet High Tide
Fri -- 06:21 PM EST     Sunset
Fri -- 07:29 PM EST     0.09 feet Low Tide
Fri -- 08:32 PM EST     Last Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.96.56.45.542.410.30.51.32.53.74.75.25.34.73.52.10.90.20.20.92.13.5

Tide / Current Tables for Lower Toogoodoo Creek, 2 mi. above entrance, South Carolina
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Lower Toogoodoo Creek
Click for Map
Fri -- 12:32 AM EST     Moonrise
Fri -- 02:03 AM EST     7.31 feet High Tide
Fri -- 06:43 AM EST     Sunrise
Fri -- 07:41 AM EST     0.31 feet Low Tide
Fri -- 11:01 AM EST     Moonset
Fri -- 02:20 PM EST     6.02 feet High Tide
Fri -- 06:21 PM EST     Sunset
Fri -- 07:52 PM EST     0.10 feet Low Tide
Fri -- 08:32 PM EST     Last Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.177.36.85.53.61.80.60.312.13.54.75.565.84.83.21.70.50.10.61.73.2

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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