Monday, September27, 2021
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Marine Weather and Tides
Isle of Palms, SC

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
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 7:09AMSunset 7:10PM Monday September 27, 2021 3:42 AM EDT (07:42 UTC) Moonrise 10:15PMMoonset 12:02PM Illumination 67% Phase: Waning Gibbous; Moon at 21 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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7 Day Forecast for Marine Location Near Isle of Palms, SC
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location: 30.97, -77.7     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 270433 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 1233 AM EDT Mon Sep 27 2021

SYNOPSIS. High pressure will remain the dominant feature through next weekend.

NEAR TERM /UNTIL 6 AM THIS MORNING/. Radiational cooling will continue through the rest of the night with clear sky and light winds. Temperatures are on track to lower to the upper 50s to around 60 degrees for the majority of the forecast area.

SHORT TERM /6 AM THIS MORNING THROUGH WEDNESDAY/. Monday through Wednesday: High pressure and deep dry air (precipitable water values around an inch) will prevail across the forecast through through mid week. Highs will start off in the mid 80s on Monday then gradually climb to the upper 80s and low 90s by Wednesday. Lows will remain quite comfortable with low to mid 60s each night.

LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/. High pressure will weaken across the region Wednesday night and Thursday. Unlike with yesterday's forecast, model guidance has backed off significantly regarding the potential backdoor cold front late in the week. The ECMWF (26/12z) Friday and Friday night, while the GFS (26/12z) keeps it north of the area altogether. With that in mind, the forecast now features warmer temperatures in the late week and beginning of the weekend period. Other than a small area of isolated showers and thunderstorms along the southeast South Carolina coast on Friday, the forecast is dry through the long term period.

AVIATION /06Z MONDAY THROUGH FRIDAY/. VFR conditions will continue through 06Z Tuesday.

Extended Aviation Outlook: VFR conditions will prevail.

MARINE. Tonight: There are no concerns. East to southeast winds will become fairly light overnight with a weak land breeze potentially shifting nearshore winds to the west and northwest. Seas will average 1-2 ft nearshore waters with 2-3 ft offshore waters.

Monday through Friday: Overall, conditions should remain pretty quiet across the local waters through much of the upcoming week. Wind speeds should top out in the 10-15 knot range, mainly in the afternoon and evening hours. Seas will mostly be in the 2-4 ft range through Thursday, then could steadily rise through Friday as swell energy arrives from distant Hurricane Sam. Small Craft Advisories could be needed as we head into the weekend, primarily for the outer Georgia waters.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . None.



NEAR TERM . NED SHORT TERM . LONG TERM . AVIATION . NED MARINE .


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC171 mi47 minN 010.00 miOvercast63°F61°F94%1019.6 hPa

Link to 5 minute data for KJZI

Wind History from JZI (wind in knots)
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Last 24hrCalmW3CalmNW3NW3NW4N6NW6N5N5N43SE8S5S4CalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoNW5NW3NW3W3CalmNW3CalmNW64Calm66NW4NW5NW5CalmCalmCalmCalmCalmW3CalmW3Calm
2 days agoN4N5N5NW4N7NE9NE10
G16
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N6NE5N8N6NW4NW5NW3NW3NW3NW3NW4N3NW4NW4

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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GEOS Local Image of    EDIT
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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