Wednesday, July8, 2020
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Marine Weather and Tides
Isle of Hope, GA

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 6:23AMSunset 8:34PM Wednesday July 8, 2020 2:29 AM EDT (06:29 UTC) Moonrise 10:25PMMoonset 8:38AM Illumination 92% Phase: Waning Gibbous; Moon at 17 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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AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 116 Am Edt Wed Jul 8 2020
Rest of tonight..SW winds 10 to 15 kt. Seas 2 ft. Isolated showers and tstms.
Wed..SW winds 10 to 15 kt. Seas 2 ft. A chance of showers with a slight chance of tstms in the morning, then showers and tstms likely in the afternoon.
Wed night..W winds 10 kt. Seas 2 ft. Showers and tstms likely, mainly in the evening.
Thu..W winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms in the morning, then a chance of showers and tstms in the afternoon.
Thu night..SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Fri..W winds 5 to 10 kt, becoming sw in the afternoon. Seas 2 ft. A chance of showers and tstms.
Fri night..SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms, mainly in the evening.
Sat..SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Sat night..SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Sun..SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Sun night..SW winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 116 Am Edt Wed Jul 8 2020
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. An area of low pressure will slowly move across south carolina through Wednesday, then lift northeast Wednesday night and Thursday. A trough of low pressure will then linger over the area through early next week.


7 Day Forecast for Marine Location Near Isle of Hope, GA
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location: 31.98, -81.05     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 080536 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 136 AM EDT Wed Jul 8 2020

SYNOPSIS. An area of low pressure will slowly move across South Carolina through Wednesday, then lift northeast Wednesday night and Thursday. A trough of low pressure will then linger over the area through early next week.

NEAR TERM /UNTIL 6 AM THIS MORNING/. Overnight, broad low pressure will drift east over the region. Adjusted PoPs to account for recent/expected trends. best coverage of showers/thunderstorms should remain over coastal waters, but recent trends suggest increased coverage across interior counties as well. PWAT values exceeding 2.25 inches will continue to present a threat for localized heavy rain.

SHORT TERM /6 AM THIS MORNING THROUGH FRIDAY/. Another wet day is likely in store for Wednesday. The surface low will very slowly move east through southern SC during the day. A very moist low-level airmass will persist with surface dewpoints in the mid to upper 70s. Precipitable Water values will range from 2 to 2.25". With expected high temperatures in the upper 80s, surface based CAPE is likely to exceed 1,500 J/kg in the afternoon with perhaps 2,000+ values across southeast GA. In addition to convergence associated with the surface low, a sea breeze is expected to develop in the afternoon and push inland, especially across southern SC. Numerous to widespread showers and tstms are anticipated Wednesday with the greatest coverage during the afternoon and early evening. 0-6 km mean wind will remain 10 kt or less, resulting in slow storm motion and the potential for locally heavy rainfall.

The main surface low will move off the coast Wednesday night, however a surface trough is expected to remain over the area through at least Friday. Ample moisture will linger, with above normal Precipitable Water values. Scattered to numerous showers and tstms expected Thursday and Friday, mainly from late morning through early evening.

LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/. Mid level troughing will persist over the eastern CONUS through early next week. At the surface, a trough of low pressure will prevail. Scattered showers and thunderstorms will be possible each day, mainly in the afternoon and evenings when instability is maximized. Temperatures will be seasonable.

AVIATION /06Z WEDNESDAY THROUGH SUNDAY/. Given ample low level moisture, VFR conditions should deteriorate to MVFR/IFR ceilings for a few hours overnight into early Wednesday morning. Brief showers could also impact either terminal. Then, prevailing VFR conditions should develop Wednesday morning through the remainder of the 6z TAF period. However, expect flight restrictions associated with showers/thunderstorms Wednesday afternoon/evening, with greatest coverage likely in the KCHS vicinity. Due to lingering uncertainty regarding precise timing, maintained VCTS and will continue to assess.

Extended Aviation Outlook: Brief flight restrictions possible, mainly during the afternoon and evening due to showers and thunderstorms.

MARINE. Overnight: Weak low pressure will continue travel slowly east across central Georgia and into South Carolina, along a stationary front aligned roughly east-west to the north of the area. A modest pressure gradient associated with the low should result in mainly southeast to south winds across northern South Carolina waters initially, then southwest to south winds for much of the coastal waters through tonight. Wind speeds should top out near 15-20 knots overnight. Seas will generally range between 2-3 ft, highest across offshore Georgia waters. Scattered to numerous showers/thunderstorms could also produce localized hazards.

Wednesday through Sunday: Weak low pressure will pass off the coast Wednesday night, though a trough will linger through the weekend. Winds/seas will remain well below advisory thresholds.

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

NEAR TERM . BSH/SPR SHORT TERM . JRL LONG TERM . ETM AVIATION . JRL/SPR MARINE . DPB/JRL/SPR


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 9 mi59 min WSW 5.1 G 8 79°F 83°F1013.9 hPa
41033 40 mi81 min WSW 16 G 21 81°F 82°F1012.9 hPa
SAXG1 - Sapelo Island Reserve, GA 41 mi89 min WSW 9.9 79°F 1014 hPa (+0.0)76°F

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hunter U. S. Army Airfield, GA6 mi2.6 hrsSW 510.00 miOvercast77°F74°F91%1013.5 hPa
Savannah-Hilton Head International Airport, GA14 mi96 minSW 610.00 miPartly Cloudy78°F75°F93%1013.4 hPa

Link to 5 minute data for KSVN

Wind History from SVN (wind in knots)
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Last 24hrS3S4CalmS3S3SW5SW6SW9SW7SW10SW10SW7S8
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1 day agoCalmCalmSW3S4CalmS3CalmSE4SE4SE8S11E12SE11SE9SE9S9
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2 days agoCalmCalmCalmCalmCalmE4SE5SE6E10E8E13E11E9E16SE11
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Tide / Current Tables for Isle of Hope, Skidaway River, Georgia
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Isle of Hope
Click for Map
Wed -- 05:47 AM EDT     -0.00 feet Low Tide
Wed -- 06:25 AM EDT     Sunrise
Wed -- 09:38 AM EDT     Moonset
Wed -- 12:01 PM EDT     7.28 feet High Tide
Wed -- 05:48 PM EDT     0.44 feet Low Tide
Wed -- 08:33 PM EDT     Sunset
Wed -- 11:24 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.57.86.34.32.10.500.82.34.15.86.97.36.95.742.30.90.51.12.64.46.17.4

Tide / Current Tables for Savannah River Entrance, Georgia Current (2) (expired 1999-12-31)
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Savannah River Entrance
Click for Map
Wed -- 03:24 AM EDT     -2.73 knots Max Ebb
Wed -- 06:24 AM EDT     Sunrise
Wed -- 06:57 AM EDT     0.00 knots Slack
Wed -- 09:07 AM EDT     1.38 knots Max Flood
Wed -- 09:37 AM EDT     Moonset
Wed -- 12:13 PM EDT     -0.00 knots Slack
Wed -- 03:41 PM EDT     -2.33 knots Max Ebb
Wed -- 06:58 PM EDT     0.00 knots Slack
Wed -- 08:32 PM EDT     Sunset
Wed -- 09:20 PM EDT     1.59 knots Max Flood
Wed -- 11:23 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.1-1.1-2.1-2.7-2.6-2-1.10.111.41.20.70.2-0.6-1.5-2.2-2.3-1.9-1011.61.51

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (2,6,7,8)
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Ground Weather Radar Station Charleston, SC
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Disclaimer:
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.