Friday, February28, 2020
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Marine Weather and Tides
Meggett, 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 6:47AMSunset 6:16PM Friday February 28, 2020 4:32 PM EST (21:32 UTC) Moonrise 9:40AMMoonset 10:51PM Illumination 28% Phase: Waxing Crescent; Moon at 5 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- 341 Pm Est Fri Feb 28 2020
Tonight..W winds 15 kt, increasing to 15 to 20 kt late this evening. Waves building to 1 to 2 ft. A slight chance of showers.
Sat..W winds 15 kt with gusts to 20 kt.
Sat night..NW winds 10 to 15 kt with gusts to 20 kt, diminishing to 5 to 10 kt after midnight.
Sun..NW winds 5 kt, becoming S in the afternoon.
Sun night..SW winds 5 to 10 kt.
Mon..SW winds 5 to 10 kt.
Mon night..SW winds 5 to 10 kt.
Tue..SW winds 10 to 15 kt.
Tue night..S winds 15 kt.
Wed..S winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers with a slight chance of tstms.
Wed night..SW winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers with a slight chance of tstms. Mariners are reminded that winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 55 degrees.
AMZ300 341 Pm Est Fri Feb 28 2020
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A weak cold front will push offshore this evening, followed by high pressure through Tuesday. A cold front could bring impacts to the region during the middle of next week.


7 Day Forecast for Marine Location Near Meggett, SC
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location: 32.7, -80.28     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 282129 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 429 PM EST Fri Feb 28 2020

SYNOPSIS. A weak cold front will push offshore this evening, followed by high pressure through Tuesday. A cold front could bring impacts to the region during the middle of next week.

NEAR TERM /UNTIL 6 AM SATURDAY MORNING/. Dry, high pressure will prevail until a cold front moves through the area. As the cold front moves through, there will be a lull in the winds before they pick up again around daybreak. As clouds continue to approach the area, isolated showers are possible until shortly after midnight. Temperatures should range from the mid 30s inland to lower to mid 40s along the coast.

Lake Winds: Gusty winds are expected over Lake Moultrie but at this time, it is marginal as to whether there will be gusts up to 25 kt. Winds are capped around 15 to 20 kt through tonight.

SHORT TERM /6 AM SATURDAY MORNING THROUGH MONDAY/. Cool high pressure will settle over the area Saturday and Sunday before shifting offshore on Monday. Clear skies and calm winds Saturday night will support strong radiational cooling with low temps in the lower to middle 30s. Surface dewpoints in the low to mid 20s would be conducive to frost formation even in areas that do not drop to freezing. Our office begins issuing Frost/Freeze products on March 1st so we may eventually need a Frost Advisory or Freeze Watch for Sunday morning.

Temperatures will warm up considerably on Monday as the high shifts offshore and a warm advection regime develops. Highs may reach the low/mid 70s.

LONG TERM /MONDAY NIGHT THROUGH FRIDAY/. A surface trough should remain to our east Monday night into Tuesday while a cold front slowly approaches from the west. Our area is expected to remain squarely between these two features and dry. Though, temperatures will be much warmer within southerly flow, making a run for the 80 degree mark on Tuesday. Models then diverge on Wednesday and Thursday. Some have the front strengthening and quickly moving through on Wednesday while others have it taking its time and moving through Thursday. The general consensus seems to be with the faster solution and that's what the forecast reflects. There remains the concern for severe weather or at least thunderstorms with the front. But it's still a few days out and any impacts will depend on how things come together.

AVIATION /22Z FRIDAY THROUGH WEDNESDAY/. VFR will prevail at KCHS and KSAV. Gusty winds will be main concern at both terminals through this afternoon and after daybreak Saturday. A mainly dry cold front will move through the area late tonight/early Saturday moving. While flight restrictions are not likely, a brief period of ceiling and visibility restrictions are possible during showers.

Extended Aviation Outlook: Flight restrictions possible Tuesday night and Wednesday due to showers and thunderstorms ahead of a cold front. Breezy Tuesday and Wednesday.

MARINE. Tonight: Winds will gradually increase through the evening. Small Craft Advisories will be in affect starting this evening for all waters expect the Georgia nearshore. While winds could become gusty at times, up to 25 kt, a Small Craft Advisory was not issued for tonight. The outer Georgia waters will have gusts up to 30 kt at times with seas 5 to 6 ft.

Saturday: The gradient will gradually decrease on Saturday following the cold front. However, enough of a wind surge is expected late Saturday morning through the evening to justify adding a Small Craft Advisory for the nearshore GA waters to accompany the remaining waters. SCA conditions should diminish by late Saturday evening.

Sunday and Monday: Quiet conditions then anticipated through Monday as the surface high gradually shifts offshore. A cold front will slowly approach from the distant west with winds increasing a bit Monday afternoon.

Tuesday: A weak trough should persist to the east of our coastal waters while the cold front to our west gets closer and strengthens. Winds and seas are forecast to rapidly increase, especially late. Small Craft Advisories will probably be needed for all of the waters.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . Small Craft Advisory until 10 PM EST Saturday for AMZ350-352- 374. Small Craft Advisory from 9 AM to 10 PM EST Saturday for AMZ354.

NEAR TERM . RAD/RJB SHORT TERM . JRL LONG TERM . AVIATION . JRL/RAD/RJB MARINE . JRL/RAD/RJB


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACXS1 - ACE Basin Reserve, SC 13 mi107 min SW 4.1 57°F 1019 hPa24°F
CHTS1 20 mi44 min WSW 5.1 G 9.9 59°F 55°F1017.8 hPa
FBIS1 - Folly Island, SC 21 mi32 min SW 20 G 23 53°F 1018.5 hPa (-2.3)38°F
41033 30 mi84 min SW 18 G 23 52°F 56°F1020.1 hPa
41029 - Capers Nearshore (CAP 2) 35 mi84 min SW 23 G 31 52°F 56°F1019.2 hPa
FPKG1 - 8670870 - Fort Pulaski, GA 57 mi44 min W 12 G 17 57°F 54°F1019.4 hPa

Wind History for Charleston, SC
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for KJZI

Wind History from JZI (wind in knots)
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CalmSW4W4W3CalmSW4CalmCalm--CalmW4W3W4W6W10NW7
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2 days ago----------SW13SW9
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S8SW5S4S53S3S6S7CalmS5S4S5W3

Tide / Current Tables for Lower Toogoodoo Creek, 2 mi. above entrance, South Carolina
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Lower Toogoodoo Creek
Click for Map
Fri -- 05:30 AM EST     0.54 feet Low Tide
Fri -- 06:50 AM EST     Sunrise
Fri -- 09:39 AM EST     Moonrise
Fri -- 12:11 PM EST     6.00 feet High Tide
Fri -- 05:48 PM EST     0.46 feet Low Tide
Fri -- 06:17 PM EST     Sunset
Fri -- 10:51 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.45.94.631.50.70.61.32.53.955.765.84.83.31.80.80.512.13.64.95.9

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Fri -- 02:13 AM EST     -1.95 knots Max Ebb
Fri -- 05:21 AM EST     0.00 knots Slack
Fri -- 06:49 AM EST     Sunrise
Fri -- 07:56 AM EST     1.50 knots Max Flood
Fri -- 09:37 AM EST     Moonrise
Fri -- 11:13 AM EST     -0.00 knots Slack
Fri -- 02:27 PM EST     -1.84 knots Max Ebb
Fri -- 05:31 PM EST     0.00 knots Slack
Fri -- 06:15 PM EST     Sunset
Fri -- 08:17 PM EST     1.53 knots Max Flood
Fri -- 10:49 PM EST     Moonset
Fri -- 11:37 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.9-1.6-1.9-1.8-1.2-0.30.51.21.51.20.70.2-0.6-1.4-1.8-1.8-1.3-0.40.41.11.51.40.90.4

Weather Map
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wmap_A
GEOS Local Image of Southeast    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 (16,3,4,5)
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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.