Tuesday, January21, 2020
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Marine Weather and Tides
Beaufort, SC

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:21AMSunset 5:47PM Tuesday January 21, 2020 9:42 PM EST (02:42 UTC) Moonrise 4:34AMMoonset 2:58PM Illumination 10% Phase: Waning Crescent; Moon at 27 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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AMZ352 Waters From Edisto Beach Sc To Savannah Ga Out 20 Nm- 914 Pm Est Tue Jan 21 2020
.gale warning in effect through Wednesday morning...
Tonight..N winds 20 to 25 kt, increasing to 25 to 30 kt late this evening. Gusts to 35 kt. Seas 4 to 6 ft, building to 5 to 7 ft after midnight.
Wed..N winds 20 to 25 kt with gusts to 35 kt. Seas 6 to 8 ft, subsiding to 5 to 7 ft in the afternoon.
Wed night..NE winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 7 ft, subsiding to 4 to 6 ft after midnight.
Thu..NE winds 15 kt with gusts to 20 kt. Seas 4 to 6 ft, subsiding to 4 to 5 ft in the afternoon.
Thu night..NE winds 10 to 15 kt with gusts to 20 kt. Seas 4 to 5 ft. A chance of showers.
Fri..E winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft in the afternoon. Showers likely.
Fri night..S winds 10 kt, becoming W with gusts to 20 kt after midnight. Seas 4 to 5 ft. Showers likely.
Sat..NW winds 10 to 15 kt. Seas 3 to 4 ft.
Sat night..NW winds 15 kt. Seas 2 to 3 ft.
Sun..NW winds 10 to 15 kt. Seas 2 to 3 ft.
Sun night..NW winds 10 to 15 kt. Seas 2 ft.
AMZ300 914 Pm Est Tue Jan 21 2020
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Chilly high pressure will build across the area from the north through mid week before weakening in advance of a storm system impacting the region late week. High pressure should then return through early next week.


7 Day Forecast for Marine Location Near Beaufort, SC
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location: 32.44, -80.67     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 220211 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 911 PM EST Tue Jan 21 2020

SYNOPSIS. Chilly high pressure will build across the area from the north through mid week before weakening in advance of a storm system impacting the region late week. High pressure should then return through early next week.

NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/. As of 9 PM: KCLX detected a wide band of weak returns across the coastal waters, moving west. The radar indicated that values of 15 dBZ or greater were around 8 kft in elevation. KCHS upper sounding observed very dry conditions below 8 kft, likely evaporating any precipitation. IR satellite detected an expanding area of -20C or colder cloud top values increasing across the coastal SC Lowcountry, satellite trends indicate that clouds will continue to expand over land through the rest of the evening. I will update the forecast to increase sky cover. In addition, temperatures will be updated to align with latest observations.

As of 725 PM: High clouds from a developing western Atlantic low pressure system will spread high clouds across portions of the SC Lowcountry through this evening. It is possible that the cloud cover could slow down cooling north of I-26. I will not change min temperatures with this update. I will update the forecast to increase sky cover.

Previous Discussion: The forecast area will remain between high pressure inland and strengthening low pressure well off the Southeast coast tonight. An enhanced pressure gradient between these two features will keep winds elevated through the night, especially along the coast. These winds will combine with temperatures dropping into the mid/upper 20s to make it feel like the mid/upper teens. Conditions appear to stay below Wind Chill Advisory criteria, however this will need to be monitored with future forecast updates.

Lake Winds: Gusty north winds will continue across Lake Moultrie tonight. A Lake Wind Advisory has been issued.

SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY/. Moderate to high confidence this period. Chilly high pressure to the north will prevail inland through Thursday with mainly dry conditions, although can't rule out a few showers Thursday near the GA coast due to a developing coastal trough. The trough should sharpen up Thursday night before pushing north through the area Friday as a warm front. Shower chances will increase Thursday night becoming likely Friday into Friday night before generally ending from southwest to northeast into early Saturday. Temperatures will remain at or below normal through Thursday before getting back above normal Thursday night/Friday.

Lake Winds . Breezy north winds are expected to gust near 25 knots into Wednesday morning in/near Lake Moultrie. Thus, a Lake Wind Advisory will be in effect.

LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/. A cold front is expected to shift across the area Friday night, producing scattered to numerous showers at most locations. Sfc high pressure will then spread across the area Saturday and become centered across the region early next week while a mid-lvl trough prevails over the Mid-Atlantic and Northeast states. The pattern will support slightly cooler conditions once fropa occurs, but temps should remain within a few degrees of normal. In general, high temps should range in the upper 50s/lower 60s each day while lows dip into the mid/upper 30s inland to lower 40s near the coast.

AVIATION /02Z WEDNESDAY THROUGH SUNDAY/. VFR conditions are forecast to continue through the 0Z TAF period at KCHS and KSAV. North-northeast winds may remain marginal gusty at times tonight, with a brief increase from daybreak into early Wednesday afternoon.

Extended Aviation Outlook: High confidence in VFR conditions through Thursday, then lower confidence in restrictions starting Thursday night and continuing through Friday night due to low clouds/showers. High confidence in VFR conditions this weekend.

MARINE. Tonight: The pressure gradient will remain enhanced in between high pressure inland and strengthening low pressure southeast of the waters. North winds are forecast to gust to 35-40 knots and a Gale Warning is now in effect for all waters, with the exception of the Charleston Harbor where a Small Craft Advisory will persist. The highest winds will occur in the outer portions of the marine zones. Seas will build as well, averaging 5-9 ft in the nearshore waters and 9-13 ft beyond by daybreak.

Wednesday through Sunday: Moderate to high confidence through the period. Hazardous marine conditions are expected through Wednesday for all waters due to a tight pressure gradient between inland high pressure and offshore low pressure. Gales are likely for all waters outside Charleston Harbor. Expect some improvement starting Wednesday night as the pressure gradient begins to weaken leading to slowly lowering winds/seas but Advisory conditions will likely linger through Thursday across the nearshore waters and into early next week over the offshore waters beyond 20 nm.

TIDES/COASTAL FLOODING. Strong high pressure to the north and low pressure offshore will maintain elevated north/northeast winds through mid week which could push tide levels slightly above coastal advisory thresholds during the morning high tides, especially near Charleston.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . Lake Wind Advisory until 11 AM EST Wednesday for SCZ045. MARINE . Gale Warning until 11 AM EST Wednesday for AMZ352-354. Gale Warning until 1 PM EST Wednesday for AMZ350. Gale Warning until 7 PM EST Wednesday for AMZ374. Small Craft Advisory until 5 PM EST Wednesday for AMZ330.

NEAR TERM . NED SHORT TERM . RJB LONG TERM . DPB AVIATION . NED/RJB MARINE . ETM/RJB TIDES/COASTAL FLOODING .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACXS1 - ACE Basin Reserve, SC 14 mi118 min N 2.9 36°F 1028 hPa15°F
41033 18 mi95 min NNE 25 G 35 40°F 55°F1027 hPa
FPKG1 - 8670870 - Fort Pulaski, GA 31 mi61 min NNE 22 G 31 39°F 54°F1026.8 hPa
FBIS1 - Folly Island, SC 45 mi43 min N 17 G 21 38°F 1027.4 hPa (+1.4)18°F
CHTS1 46 mi61 min N 11 G 16 39°F 55°F1027.1 hPa

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beaufort County Airport, SC3 mi48 minN 1210.00 miFair36°F14°F41%1027.4 hPa
Beaufort, Marine Corps Air Station, SC4 mi47 minN 1010.00 miFair36°F14°F40%1027.8 hPa
Hilton Head Island, Hilton Head Airport, SC15 mi48 minN 16 G 2210.00 miFair37°F12°F35%1026.7 hPa

Link to 5 minute data for KARW

Wind History from ARW (wind in knots)
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Tide / Current Tables for Beaufort, Beaufort River, South Carolina
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Beaufort
Click for Map
Tue -- 04:34 AM EST     Moonrise
Tue -- 06:32 AM EST     8.06 feet High Tide
Tue -- 07:22 AM EST     Sunrise
Tue -- 12:32 PM EST     -0.00 feet Low Tide
Tue -- 02:58 PM EST     Moonset
Tue -- 05:45 PM EST     Sunset
Tue -- 06:45 PM EST     6.81 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.30.41.93.75.67.17.9875.33.21.30.20.112.54.25.66.66.86.14.72.70.9

Tide / Current Tables for Jenkins Creek, 1 mi. above entrance, Morgan River, South Carolina
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Jenkins Creek
Click for Map
Tue -- 04:33 AM EST     Moonrise
Tue -- 05:56 AM EST     7.04 feet High Tide
Tue -- 07:22 AM EST     Sunrise
Tue -- 11:59 AM EST     -0.08 feet Low Tide
Tue -- 02:57 PM EST     Moonset
Tue -- 05:44 PM EST     Sunset
Tue -- 06:06 PM EST     6.09 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-012.64.35.86.776.65.53.920.5-0.10.41.53.14.65.76.15.84.83.31.70.2

Weather Map
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wmap_A
GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (21,6,7,8)
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Ground Weather Radar Station Charleston, SC
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.