Tuesday, March2, 2021
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Marine Weather and Tides
Barnwell, 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 6:52AMSunset 6:25PM Tuesday March 2, 2021 8:40 PM EST (01:40 UTC) Moonrise 10:19PMMoonset 9:08AM Illumination 81% Phase: Waning Gibbous; Moon at 19 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- 637 Pm Est Tue Mar 2 2021
.small craft advisory in effect from midnight est tonight through Wednesday morning...
Tonight..NE winds 15 to 20 kt. Gusts to 25 kt after midnight. Waves 1 to 2 ft. Showers. A slight chance of tstms after midnight.
Wed..N winds 15 to 20 kt. Gusts to 25 kt in the morning. Waves 1 to 2 ft. Rain, mainly in the morning.
Wed night..NW winds 5 to 10 kt.
Thu..W winds 5 kt.
Thu night..W winds 5 kt, becoming N after midnight.
Fri..NE winds 5 to 10 kt.
Fri night..NE winds 5 to 10 kt. A chance of showers.
Sat..NE winds 10 kt. A chance of showers.
Sat night..N winds 10 kt. A slight chance of showers.
Sun..N winds 10 to 15 kt.
Sun night..NE winds 5 to 10 kt. Mariners are reminded that winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 58 degrees.
AMZ300 637 Pm Est Tue Mar 2 2021
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Low pressure will move across the area this evening and tonight, before shifting offshore Wednesday morning. High pressure will then prevail through much of the week until another storm system brushes the area this weekend. High pressure will return again early next week.


7 Day Forecast for Marine Location Near Barnwell, SC
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location: 33.23, -81.36     debug


Area Discussion for - Columbia, SC
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FXUS62 KCAE 022355 AFDCAE

Area Forecast Discussion National Weather Service Columbia SC 655 PM EST Tue Mar 2 2021

SYNOPSIS. A stalled front to the south will return northward as a warm front and provide rain late today into Wednesday. Dry and cool weather moves in for the remainder of week has high pressure builds in. A weak system will move through Saturday and then a strong ridge will bring dry conditions through Monday.

NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/. Light rain moving through the area this evening, and with the dry air that has been in place, there has been some evaporative cooling at the leading edge of the light rain. This has lead to a few reports of sleet being reported at the onset. Surface temps well into the mid to upper 40s, so no concerns as that leading edge quickly turns back to all rain.

Better moisture returns later tonight from the south as an area of low pressure tracks along the Gulf Coast, producing strengthening SW flow and moisture advection from the Gulf. As the surface low moves through the region an upper level low will also be pushing into the area from the west adding to convergence and moisture transport. While the highest moisture will likely be associated with a stronger low level southerly jet that models keep just to our south, still expect fairly high rain rates to occur later on tonight, especially after midnight and south of I20. Total QPF by morning could range from around an inch in the northern Midlands, to near 2 inches in the southern CSRA. Blended guidance and the HREF mean is fairly consistent with rainfall amounts. Temperatures tonight will be in the upper 30s to low 40s.

SHORT TERM /6 AM WEDNESDAY MORNING THROUGH THURSDAY NIGHT/. Upper trough and surface low will be shifting east away from our FA during the day. Latest high resolution models indicate a gradual shifting of the associated rain from west to east out of the FA during the day. Upper trough along the east coast, providing a NW flow aloft for our region and fair weather Thursday into Friday, with drier air pouring into the FA, reinforced by a weak dry cold front Thursday night, providing cooler temps for Friday.

LONG TERM /FRIDAY THROUGH TUESDAY/. Latest model suite remains consistent and in good agreement in handling the late week/weekend system. A closed upper low over the W CONUS will open and shift to the SE, and will be shunted to our south as a northern stream upper trough digs deeper into the E CONUS. Associated surface wave and impacts to our area appear minimal. Latest GFS and EC ensemble means and NBM indicate low probabilities of rain, mainly slight chance POPs for western and southern areas Fri nt/Saturday. Fair weather Sunday through early next week, with indications of a reinforced east coast upper trough and NW flow aloft, and surface high pressure building in. By late in the forecast period, model suite in good agreement that the upper trough will shift east, with rising upper heights for our region, providing a warming trend in temps.

AVIATION /00Z WEDNESDAY THROUGH SUNDAY/. VFR conditions will continue for a brief time this evening, with restrictions expected to quickly overspread the region later this evening.

System poised to impact the region tonight is still well off to our west and southwest, with an upper level disturbance forcing a surface low across the northern Gulf of Mexico. Moisture is streaming ahead of this across the southeastern US, and rainfall is developing in response to this and an increase in overall lift. As a result, the TAF are long to reflect the quick nature of this system and of the restrictions as a whole. The summary of the TAFs is pretty simple, though: between 03z and 18z, MVFR and IFR cig restrictions are expected at all sites, with some vis restrictions added to the mix. Here is a short summary of how I expect this to play out:

AGS/DNL - MVFR from 02z-18z IFR from 05z-16z OGB - MVFR from 04z-19z IFR from 07z-16z CAE/CUB - MVFR from 06z-18z IFR from 08z-16z

Confidence is high in this forecast and guidance is in very good agreement in the extent to which cigs will fall and their duration. Rain should continue to develop and overspread the region between 01z and 03z, and last through the 16z-18z period overnight. Some obs to our southwest are showing vis below what I have in there; however, to try and keep the TAFs as simple as possible (and because everyone will have IFR cigs anyways), I kept 3SM as the lowest vis in there right now. Winds will gradually shift from NE to N to NW as the surface low passes to our south tonight. Expect winds to get gusty between 12z and 16z tomorrow as the low makes a close approach, with gusts upwards of 20 knots possible at AGS/DNL/OGB who will have the greatest proximity to the low. Conditions are expected to improve fairly quickly tomorrow afternoon as the low moves to our east and dry air filters into the area. I expect VFR conditions returning to all sites by 20z at the latest. It would not surprise me to see VFR to return slightly earlier given how quickly this system is progressing to the east, but I am confident in the forecast that we have in there now.

EXTENDED AVIATION OUTLOOK . Restrictions after 04/00z are not expected, as high pressure pushes into the region for the remainder of the week.

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

SYNOPSIS . 99 NEAR TERM . 99 SHORT TERM . 99 LONG TERM . 99 AVIATION . 99


Weather Reporting Stations
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Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Barnwell Regional Airport, SC2 mi45 minENE 610.00 miOvercast46°F36°F66%1021.3 hPa

Link to 5 minute data for KBNL

Wind History from BNL (wind in knots)
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Last 24hrCalmW4CalmNW3N7N8N6
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2 days agoCalmCalmSE4S3CalmCalmS4CalmCalmSE4S4S5S7
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Tide / Current Tables for Tulifiny River, I-95 bridge, South Carolina
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Tulifiny River
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Tue -- 01:14 AM EST     5.65 feet High Tide
Tue -- 06:49 AM EST     Sunrise
Tue -- 07:48 AM EST     -0.77 feet Low Tide
Tue -- 09:05 AM EST     Moonset
Tue -- 01:36 PM EST     5.54 feet High Tide
Tue -- 06:21 PM EST     Sunset
Tue -- 08:03 PM EST     -0.68 feet Low Tide
Tue -- 10:16 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.15.65.54.73.52.10.6-0.5-0.7-01.53.24.65.45.54.93.82.41-0.2-0.7-0.21.12.7

Tide / Current Tables for Cuckolds Creek, Combahee River, South Carolina
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Cuckolds Creek
Click for Map
Tue -- 02:35 AM EST     3.94 feet High Tide
Tue -- 06:49 AM EST     Sunrise
Tue -- 08:29 AM EST     -1.81 feet Low Tide
Tue -- 09:04 AM EST     Moonset
Tue -- 02:57 PM EST     3.87 feet High Tide
Tue -- 06:21 PM EST     Sunset
Tue -- 08:44 PM EST     -1.61 feet Low Tide
Tue -- 10:15 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.33.33.93.93.32.10.7-0.7-1.7-1.7-10.31.72.93.63.93.52.51.1-0.3-1.3-1.6-10.1

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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