Wednesday, July26, 2017 L-36.com


Marine Weather and Tides
St. Simons, GA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:38AMSunset 8:26PM Wednesday July 26, 2017 12:36 AM EDT (04:36 UTC) Moonrise 9:01AMMoonset 9:56PM Illumination 7% Phase: Waxing Crescent; Moon at 3 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- 941 Pm Edt Tue Jul 25 2017
Rest of tonight..Southwest winds 10 to 15 knots becoming west southwest around 5 knots in the morning. Seas 2 to 3 feet. Dominant period 4 seconds. Inland waters a light chop. A chance of Thunderstorms late in the evening. A chance of showers through the night.
Wednesday..South southwest winds around 5 knots becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters a light chop. A chance of showers and Thunderstorms in the morning. Showers and Thunderstorms likely in the afternoon.
Wednesday night..South winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Inland waters a light chop. Showers and Thunderstorms likely in the evening, then a chance of showers and a slight chance of Thunderstorms after midnight.
Thursday..South southeast winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 5 seconds. Inland waters a light chop. Showers and Thunderstorms likely.
Thursday night..South southwest winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop. A chance of showers and Thunderstorms.
Friday..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Friday night and Saturday..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a moderate chop. A chance of showers and Thunderstorms.
Saturday night..West southwest winds 10 to 15 knots. Seas 1 to 2 feet. Inland waters a moderate chop. Showers and Thunderstorms likely.
Sunday..West northwest winds 5 to 10 knots becoming southwest in the afternoon. Seas 2 to 3 feet. Inland waters a light chop. Showers and Thunderstorms likely.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 941 Pm Edt Tue Jul 25 2017
Synopsis.. High pressure will be southeast of area waters this week. A trough of low pressure is expected to move southeast over the region through mid week and dissipate. Another trough is expected to move southeast toward the region this weekend.

7 Day Forecast for Marine Location Near St. Simons, GA
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location: 31.13, -81.39     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 260109
afdjax
area forecast discussion
national weather service jacksonville fl
909 pm edt Tue jul 25 2017

Update Upper level impulse and MCV is moving across southeast
georgia this evening in concert with a few outflow boundaries
associated with the thunderstorms that were spawned with a
destablilized atmosphere where the storms developed in an area
where capes are 2000-2400 j kg and precipitable water values are
2.2 to 2.5". The upper level impulse is associated with an upper
level weak closed off low over georgia. The northern tier of our
georgia counties closest to the altamaha river basin had radar
estimates of 1.5 to 2.5" rain with some locally higher amounts.

Thunderstorms this mid evening are already showing a weakening
trend, across southeast ga and north of i-10 in NE fl. This
thunderstorm activity will linger through most the late evening in
a debilitated manner, and will continue to wind down and markedly
decrease in areal coverage towards midnight. Some remnant post-
convective stratiform rain will linger past midnight.

As the upper level low translates eastward, most models shows a
couple impulses moving southward on the back side of the low into
its base allowing a few late night showers across SE ga.

For northeast florida, stratiform showers will continue mainly
north of i-10 through the evening with quiet evening for the NE fl
south of i-10.

Aviation Very brief ifr conditions in heavy rain from isolated storms
possible for another hour or two at kssi terminal.VFR conditions
should prevail the rest of the night. Wednesday will be an active
thunderstorm day for much of the area, and tsra will eventually
need to be added to all terminals along and north of the i-10
corridor. Lifr conditions in torrential downpours and strong gusty
winds can be expected in thunderstorms tomorrow.

Marine
High pressure will be southeast of the area waters this week. A
trough of low pressure is expected to move southeast over the
regional waters on Wednesday and Thursday before dissipating.

Another trough is expected to move southeast toward the region
this weekend.

Preliminary point temps pops
Amg 74 86 73 90 80 80 40 60
ssi 77 87 77 88 70 70 50 60
jax 76 92 74 91 20 80 40 60
sgj 77 92 78 92 10 40 40 50
gnv 75 93 74 91 10 20 30 40
ocf 75 93 74 91 10 20 20 30

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

Cordero zibura corless


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAXG1 - Sapelo Island Reserve, GA 21 mi96 min Calm 76°F 1019 hPa (+1.0)75°F
41112 - Offshore Fernandina Beach, FL (132) 30 mi36 min 79°F2 ft
FRDF1 - 8720030 - Fernandina Beach, FL 32 mi48 min SSE 1.9 G 4.1 79°F 77°F1019.7 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 33 mi46 min NW 5.8 G 7.8 78°F 81°F2 ft1018.1 hPa (+0.4)73°F

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brunswick, Malcolm McKinnon Airport, GA1 mi43 minN 010.00 miA Few Clouds77°F75°F96%1018.2 hPa
Brunswick / Glynco, GA10 mi41 minN 010.00 miPartly Cloudy77°F77°F100%1018.3 hPa

Wind History from BQK (wind in knots)
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Last 24hrSW7SW6SW4SW5SW7SW4SW5SW7W8W8W6W5NW5SW5SW5SE9SE11
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G14
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Tide / Current Tables for St. Simons Lighthouse, St. Simons Island, Georgia
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St. Simons Lighthouse
Click for Map
Wed -- 05:32 AM EDT     -0.72 feet Low Tide
Wed -- 06:38 AM EDT     Sunrise
Wed -- 10:01 AM EDT     Moonrise
Wed -- 11:34 AM EDT     6.98 feet High Tide
Wed -- 05:48 PM EDT     -0.43 feet Low Tide
Wed -- 08:24 PM EDT     Sunset
Wed -- 10:55 PM EDT     Moonset
Wed -- 11:50 PM EDT     7.51 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.46.14.22.20.5-0.6-0.60.42.34.35.96.86.96.14.62.81.1-0.1-0.40.424.167.2

Tide / Current Tables for Mackay River (Daymark #239), Georgia
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Mackay River (Daymark #239)
Click for Map
Wed -- 06:06 AM EDT     -0.72 feet Low Tide
Wed -- 06:38 AM EDT     Sunrise
Wed -- 10:01 AM EDT     Moonrise
Wed -- 12:16 PM EDT     7.60 feet High Tide
Wed -- 06:23 PM EDT     -0.50 feet Low Tide
Wed -- 08:25 PM EDT     Sunset
Wed -- 10:55 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
8.57.86.24.220.1-0.7-0.21.43.45.46.97.67.46.44.82.70.8-0.4-0.31.13.25.47.1

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Jacksonville, FL (0,6,7,8)
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Ground Weather Radar Station Jacksonville, FL
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weather_mapweather_map weather_map

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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.