Barnwell, SC Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Barnwell, SC

April 21, 2024 3:41 AM EDT (07:41 UTC) Change Location
Sunrise 6:46 AM   Sunset 8:03 PM
Moonrise 5:08 PM   Moonset 4:38 AM 
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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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Marine Forecasts
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AMZ330 Charleston Harbor- 304 Am Edt Sun Apr 21 2024

Today - NE winds 5 to 10 kt, becoming N 10 to 15 kt with gusts to 20 kt. A slight chance of showers and tstms this morning, then showers and tstms likely this afternoon.

Tonight - N winds 15 kt with gusts to 20 kt. Showers, mainly in the evening.

Mon - N winds 10 to 15 kt with gusts to 20 kt. A slight chance of showers.

Mon night - N winds 10 kt.

Tue - NE winds 10 kt, becoming E in the afternoon.

Tue night - SE winds 5 to 10 kt, becoming S after midnight.

Wed - SW winds 5 to 10 kt.

Wed night - SW winds 10 kt.

Thu - NE winds 10 kt.

Thu night - E winds 10 kt.
winds and waves higher in and near tstms.
unless otherwise noted, waves 1 foot or less.
charleston harbor water temperature 70 degrees.

AMZ300 304 Am Edt Sun Apr 21 2024

Synopsis for the coastal waters of south coastal south carolina and north coastal georgia - An area of low pressure and associated front will push through the area and offshore today. High pressure will then return to the region and prevail through much of the week.


7 Day Forecast for Marine Location Near Barnwell, SC
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Area Discussion for - Columbia, SC
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FXUS62 KCAE 210552 AFDCAE

Area Forecast Discussion National Weather Service Columbia SC 152 AM EDT Sun Apr 21 2024

SYNOPSIS
A cold front moves slowly southward and through the area tonight. The front becomes stationary near or slightly south of the area Sunday. Deep moisture and lift across the area will result in numerous showers Sunday and Sunday night. Temperatures Sunday and Monday are expected to be well below normal. Drier conditions return on Monday, with a gradual warming trend through the week.

NEAR TERM /UNTIL 6 AM THIS MORNING/
The boundary is finally pushing south and east early this morning with strengthening northerly, dry low level flow and corresponding increasing 850-700mb moisture advection and isentropic lift. So shower activity will increase as the boundary sags south into Sunday morning with wedge conditions beginning to develop.

SHORT TERM /6 AM THIS MORNING THROUGH MONDAY NIGHT/
Sunday and Sunday night: Surface cold front will be situated south of the forecast area. Weak high pressure off to the north will push cooler air into the region on northeasterly winds, allowing a low-level wedge to develop. Aloft, shortwave energy moves out of the central Gulf Coast States to start off the day, then traverses the southeastern U.S. into Sunday night. Ahead of the upper wave, a good deal of isentropic lift is expected as warm moist air lifts and overrides the surface wedge in place across the forecast area. This will lead to periods of light to moderate rainfall for a good portion of the daytime hours Sunday. Temperatures will be much colder as the wedge develops and rainfall re-enforces it through the day. High temperatures may actually occur early in the day in many areas, with temperatures either holding steady or slowly falling through the day. Max temperatures are expected to range from the upper 50s north to mid 60s south. Sunday night will see the rain begin to end from west to east as upper energy moves east and towards the coast. Lows Sunday night in the lower 40s north, to the upper 40s south.

Monday and Monday night: As deeper moisture moves east with both the exiting shortwave and surface front, drier air will be settling back into the area through the day. Can not rule out a brief period of light rain across the extreme east early Monday morning as the system moves out. In addition, an isolated shower can not be completely ruled out as the main upper trough moves through. For the majority of the forecast area, it will remain dry though. Clouds may still hang around behind the low through a good portion of the day, which will still help to keep cooler temperatures in the area, but still a little warmer than Sunday as highs do reach into the middle 60s. Skies should begin to clear out some by Monday night. Overnight lows in the low to mid 40s.

LONG TERM /TUESDAY THROUGH SATURDAY/
Period will be mostly on the dry side, with only a slight chance for rain entering late in the period. Two frontal boundaries are forecast through the period. The first comes through Wednesday night/Thursday, but with limited moisture to work with it should push through mostly dry. Better chance for rain may occur with the second front toward next weekend. Temperatures will slowly continue to moderate each day through the week.

AVIATION /06Z SUNDAY THROUGH THURSDAY/
Deteriorating conditions expected early this morning with widespread restrictions through Sunday.

While the thunderstorm threat has diminished over the terminals, widespread rain associated with increasing moisture and isentropic lift is expected to move in from the west over the next few hours. This will lead to restrictions developing at all the terminals around daybreak with IFR ceilings expected by late morning. While the rain should remain light enough through the day for visibilities to remain MVFR, it does remain possible that at times heavier rain leads to IFR visibility.
Some improvement possible tonight as drier air moves in from the west with the front pushing farther offshore but kept MVFR ceilings in through the end of the TAF period.

EXTENDED AVIATION OUTLOOK...Lingering restrictions possible early Monday morning. No significant impacts to aviation expected beyond Monday.

CAE WATCHES/WARNINGS/ADVISORIES
SC...None.
GA...None.




Weather Reporting Stations
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Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KBNL BARNWELL RGNL,SC 3 sm6 mincalm10 smMostly Cloudy68°F64°F88%29.92
KAQX ALLENDALE COUNTY,SC 17 sm26 mincalm10 smOvercast72°F66°F83%29.91
Link to 5 minute data for KBNL


Wind History from BNL
(wind in knots)
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Tide / Current for Bluff Plantation, Combahee River, South Carolina
   
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Bluff Plantation
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Sun -- 05:08 AM EDT     0.23 feet Low Tide
Sun -- 05:35 AM EDT     Moonset
Sun -- 06:45 AM EDT     Sunrise
Sun -- 11:16 AM EDT     3.00 feet High Tide
Sun -- 05:17 PM EDT     0.22 feet Low Tide
Sun -- 06:04 PM EDT     Moonrise
Sun -- 07:57 PM EDT     Sunset
Sun -- 11:45 PM EDT     3.23 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Bluff Plantation, Combahee River, South Carolina, Tide feet
12
am
2.9
1
am
2.5
2
am
1.9
3
am
1.1
4
am
0.5
5
am
0.2
6
am
0.4
7
am
0.8
8
am
1.5
9
am
2.2
10
am
2.7
11
am
3
12
pm
2.9
1
pm
2.5
2
pm
1.9
3
pm
1.2
4
pm
0.6
5
pm
0.2
6
pm
0.3
7
pm
0.7
8
pm
1.4
9
pm
2.1
10
pm
2.7
11
pm
3.1



Tide / Current for Cuckolds Creek, Combahee River, South Carolina
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Cuckolds Creek
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Sun -- 05:31 AM EDT     0.90 feet Low Tide
Sun -- 05:35 AM EDT     Moonset
Sun -- 06:45 AM EDT     Sunrise
Sun -- 11:59 AM EDT     3.39 feet High Tide
Sun -- 05:40 PM EDT     0.85 feet Low Tide
Sun -- 06:04 PM EDT     Moonrise
Sun -- 07:57 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Cuckolds Creek, Combahee River, South Carolina, Tide feet
12
am
3.5
1
am
3.3
2
am
2.8
3
am
2.1
4
am
1.4
5
am
1
6
am
0.9
7
am
1.2
8
am
1.7
9
am
2.3
10
am
2.9
11
am
3.3
12
pm
3.4
1
pm
3.2
2
pm
2.7
3
pm
2.1
4
pm
1.4
5
pm
1
6
pm
0.9
7
pm
1.1
8
pm
1.6
9
pm
2.2
10
pm
2.9
11
pm
3.4




Weather Map
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GEOS Local Image of southeast   
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Charleston, SC,



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