Tuesday, July16, 2019 L-36.com


Marine Weather and Tides
Darien, GA

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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:31AMSunset 8:32PM Tuesday July 16, 2019 4:33 PM EDT (20:33 UTC) Moonrise 7:35PMMoonset 5:10AM Illumination 100% Phase: Full Moon; Moon at 14 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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AMZ450 Coastal Waters From Altamaha Sound To Fernandina Beach Fl Out 20 Nm- Coastal Waters From Fernandina Beach To St. Augustine Fl Out 20 Nm- Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 204 Pm Edt Tue Jul 16 2019
Tonight..South southwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Inland waters a light chop.
Wednesday..South southeast winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop. A chance of showers and Thunderstorms.
Wednesday night..South southwest winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a moderate chop.
Thursday..South winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop. A chance of showers and Thunderstorms.
Thursday night..South winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a moderate chop. A slight chance of showers and Thunderstorms.
Friday..South winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop. A chance of showers and Thunderstorms.
Friday night..South winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and Thunderstorms.
Saturday..South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
Saturday night..South southwest winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and Thunderstorms.
Sunday..South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 204 Pm Edt Tue Jul 16 2019
Synopsis.. High pressure will extend across the florida peninsula with weak troughs lingering across georgia through the weekend. An extended period of prevailing offshore flow is expected, with winds becoming onshore near the coast in the afternoon with the east coast sea breeze.
Gulf stream.. The approximate location of the west wall of the gulf stream as of jul 16, 2019 at 1200 utc... 63 nautical miles east of flagler beach. 70 nautical miles east of saint augustine beach. 82 nautical miles east of jacksonville beach. 97 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Darien, GA
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location: 31.32, -81.36     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 162018
afdchs
area forecast discussion
national weather service charleston sc
418 pm edt Tue jul 16 2019

Synopsis
The area will remain situated between an area of weak low
pressure inland and high pressure offshore into early next
week.

Near term until 6 am Wednesday morning
This evening and tonight: aloft, a fairly strong mid-lvl ridge of
high pressure will extend across the area, helping suppress
widespread convection. However, warm and moist conditions will
continue to support isolated to scattered showers thunderstorms into
early evening hours, mainly along a seabreeze circulation a few
miles away from the coast and across parts of southeast georgia
where a weak subtle sfc trough of low pressure extends north south
into the area. Convective coverage should be greatest across
southeast georgia where the trough and seabreeze coincide with
mlcape around 2000 j kg and pwats near 1.8 inches (roughly 25-30%
chances). Although shear is weak, a few thunderstorms could be
strong or perhaps briefly severe with gusty winds and heavy
downpours, mainly across southeast georgia where dcape remains
near 1000 j kg and thermal outflow boundaries interact with
ongoing activity. Elsewhere, an isolated shower or thunderstorm
is possible given a warm and moist atmosphere, but chances of
convection should quickly diminish heading into sunset. Overnight,
any convection should dissipate within 1-2 hours following sunset.

All areas will then remain dry through the night while skies
become mostly clear and winds become light calm. Low temps should
range from the mid 70s inland to the upper 70s along the coast.

Short term 6 am Wednesday morning through Friday
The mid-levels will consist of high pressure over the southeast
Wednesday morning while a shortwave stretches from the great lakes
region southwards into the tn valley. The high will dissipate into
Wednesday night as the shortwave passes to our north. The northern
extent of the shortwave is expected to move off the coast of the
northeastern u.S. Thursday. Though, it's southern half should be
slower to move off the southeastern u.S., lingering into Thursday
night, then dissipating early Friday. Heights should build later
Friday. At the surface, our area will be sandwiched between high
pressure in the atlantic and troughing inland. Plenty of moisture
will be in place throughout the short term. Pwats will be ~1.75
Wednesday, creeping up to ~2" Thursday and Friday. The typical
instability for july will be in place each afternoon. Convection is
expected to initiate along the sea breeze and spread inland each
afternoon, dissipating around sunset. Then, more convection should
develop over the coastal waters overnight. Given the pulse nature of
the storms, a marginally severe thunderstorm with damaging wind
gusts will be possible each day. But the more noticeable impact will
probably be the locally heavy rainfall from these storms.

Temperatures will be above normal. Heat indices will peak close to
110 degrees each afternoon, mainly along the coast and across parts
of sc. The potential for heat advisories will need to be evaluated
each day.

Long term Friday night through Tuesday
Moderate confidence this period. The low-level lee-side trough looks
to persist through the period while some upper ridging tries to give
way to more troughing, especially by Tuesday. For now we have
maintained a climatology and persistence forecast as far as rain
chances (mostly around 30 percent) with temperatures remaining above
normal. Heat indices will remain high, but mainly below the advisory
threshold of 110 degrees.

Aviation 20z Tuesday through Sunday
Tempo MVFR conditions have been included at the chs terminal between
20-21z this afternoon for an ongoing thunderstorm. Additional flight
restrictions are possible over the next few hours, but chances will
diminish heading into sunset. Vcts also remains at the sav terminal
until 22z this afternoon evening, but a tempo group remains out of
the taf. Otherwise,VFR conditions will prevail tonight through late
Wednesday morning at both chs and sav terminals.

Extended aviation outlook: brief flight restrictions are possible
during afternoon evening showers thunderstorms.

Marine
This evening and tonight: the coastal waters will remain
situated between high pressure over the western atlantic and a
weak trough of low pressure over land. The pattern will favor a
weak pressure gradient across all waters, supporting mainly
southeast winds around 10 kts that turn more southwest and
decrease to 5-10 kt overnight. Seas will generally range between
1-2 ft, but could build as high as 3 ft beyond 50 nm in offshore
georgia waters late tonight.

Extended marine: the area will remain situated between an area of
weak low pressure inland and high pressure offshore into early next
week. This synoptic pattern will lead to winds mainly from the
south southwest. Aside from the typical afternoon increase with the
sea breeze, sustained winds should stay below 15 kt. No small craft
advisories are expected.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term... Dpb
short term... Ms
long term... Rjb
aviation... Dpb ms
marine... Dpb ms


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAXG1 - Sapelo Island Reserve, GA 8 mi93 min E 8 92°F 1019 hPa (-1.0)76°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 27 mi43 min E 7.8 G 9.7 86°F 87°F1 ft1019 hPa (-1.2)80°F
41112 - Offshore Fernandina Beach, FL (132) 42 mi33 min 85°F1 ft
FRDF1 - 8720030 - Fernandina Beach, FL 45 mi45 min ESE 4.1 G 8.9 97°F 87°F1019.7 hPa

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brunswick / Glynco, GA7 mi38 minE 1010.00 miMostly Cloudy92°F76°F60%1018.6 hPa
Brunswick, Malcolm McKinnon Airport, GA12 mi40 minE 1110.00 miFair94°F75°F56%1018.8 hPa

Wind History from BQK (wind in knots)
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Last 24hrN6N5CalmS6S7SW3E3CalmSW5SW4W3SW4SW3CalmCalmW3NW3NW4NW6N7N4NW5E9E9
1 day agoW6CalmCalmCalmCalmCalmW3CalmW3CalmCalmCalmCalmW3CalmW3NW3NW3NW3W4W4W7W6W8
2 days agoSW10SW8SW4CalmS3SW5S5SW6SW7SW4SW4CalmCalmCalmCalmSW4SW5W5NW3W7W8W9W9
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Tide / Current Tables for Wolf Island, south end, Georgia
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Wolf Island
Click for Map
Tue -- 03:24 AM EDT     0.07 feet Low Tide
Tue -- 06:10 AM EDT     Moonset
Tue -- 06:31 AM EDT     Sunrise
Tue -- 08:44 AM EDT     6.35 feet High Tide
Tue -- 03:21 PM EDT     0.04 feet Low Tide
Tue -- 05:39 PM EDT     Full Moon
Tue -- 08:30 PM EDT     Sunset
Tue -- 08:34 PM EDT     Moonrise
Tue -- 09:16 PM EDT     7.50 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.22.510.10.31.53.24.96.16.35.84.83.52.10.80.10.31.53.35.26.77.57.36.5

Tide / Current Tables for Old Tower, Sapelo Island, Georgia
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Old Tower
Click for Map
Tue -- 02:52 AM EDT     0.06 feet Low Tide
Tue -- 06:09 AM EDT     Moonset
Tue -- 06:31 AM EDT     Sunrise
Tue -- 08:31 AM EDT     6.54 feet High Tide
Tue -- 02:49 PM EDT     0.04 feet Low Tide
Tue -- 05:39 PM EDT     Full Moon
Tue -- 08:30 PM EDT     Sunset
Tue -- 08:34 PM EDT     Moonrise
Tue -- 09:03 PM EDT     7.73 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.71.80.50.10.72.245.56.46.45.74.531.50.40.10.82.34.167.27.77.46.4

Weather Map and Satellite Images
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wmap_A
GOES 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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Wind Forecast for Charleston, SC (16,3,4,5)
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Ground Weather Radar Station Jacksonville, FL
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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 numerious 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.