Monday, July23, 2018 L-36.com


Marine Weather and Tides
St. Marys, GA

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7/21/2018 Trying to make page Mobile Friendly

Sunrise 6:37AMSunset 8:27PM Monday July 23, 2018 7:26 AM EDT (11:26 UTC) Moonrise 4:16PMMoonset 2:17AM Illumination 80% Phase: Waxing Gibbous; Moon at 10 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- 404 Am Edt Mon Jul 23 2018
Today..South southwest winds 10 knots becoming south southeast 15 knots in the afternoon. Seas 2 to 4 feet. Dominant period 5 seconds. Inland waters a light chop. A slight chance of showers in the morning, then chance of showers and Thunderstorms in the afternoon.
Tonight..South southwest winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 6 seconds. Inland waters a light chop. A chance of Thunderstorms in the evening. A chance of showers through the night. A slight chance of Thunderstorms after midnight.
Tuesday..South southeast winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 8 seconds. Inland waters a light chop. A chance of showers and Thunderstorms in the morning, then showers and Thunderstorms likely in the afternoon.
Tuesday night..South southwest winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 7 seconds. Inland waters a light chop. A chance of showers and Thunderstorms.
Wednesday..South winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a moderate chop. Showers and Thunderstorms likely.
Wednesday night..South southwest winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a moderate chop. A chance of showers and Thunderstorms.
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..Southwest winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a light chop. A chance of showers and Thunderstorms.
Friday..South southwest winds 5 to 10 knots becoming south southeast in the afternoon. Seas 2 to 3 feet. Inland waters a light chop. A chance of showers and Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 404 Am Edt Mon Jul 23 2018
Synopsis.. The region will be between high pressure to the east, and weak low pressure to the west this week, with daily rounds of showers and Thunderstorms. Winds in the offshore waters will be near cautionary levels through mid week.

7 Day Forecast for Marine Location Near St. Marys, GA
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location: 30.72, -81.55     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 230830
afdjax
area forecast discussion
national weather service jacksonville fl
430 am edt Mon jul 23 2018

Near term Today-tonight...

nearly vertically stacked low pressure system over NRN ga will drop
southward through tonight. Pwat analysis shows drier air rotating
around the base of the trough over the WRN fl panhandle and into the
northeast gomex early this morning. This drier air will act to limit
convective coverage today through tonight compared to the past
couple of days.

Current isolated to scattered showers and a rumble of thunder over
inland parts of northeast fl will slowly weaken. Rain isolated
thunderstorm around marion county will continue to slide southeast
through sunrise. For today... We expect scattered to briefly numerous
showers and storms to develop. Low level forcing will come from weak
low pressure over SRN ga... With trough extending to the south, and
weak enough pressure gradient to allow west and east sea breezes to
push inland. Overall shear values are going to be less today on the
order of 15-25 kt so only isolated strong to briefly severe storm
potential today with gusty winds and perhaps some small hail the
main concerns. Average pops today in the 30-50 percent range.

High expected to average near 89-93. Tonight... Focus of convection
early in the evening will be over inland areas roughly near highway
301. Activity should fade overnight with loss of heating. Lows
typical in the lower to mid 70s.

.Short term (Tuesday-Wednesday night)
the deep layer trough over the area weakens some and begins to shift
west. However... The wet pattern expected to continue due to a moist
and unstable southwest flow and modest amounts of deep layer shear.

The flow favors an active west coast seabreeze leading to late
morning early afternoon storms towards the gulf coast and early to
mid afternoon storms east coast. Temps will average slightly lower
than normal due to cloud cover.

Long term (Thursday-Sunday)
A return to more of a typical summertime pattern as the deep layer
trough over the area weakens and a deep layer ridge builds north
into the area. Scattered mainly diurnal convection from daytime
heating and seabreezes. Temps will be close to slightly above normal
due to more sun.

Aviation
Vfr conditions prevail but winds just above surface and moisture
trapped under radiation inversion may bring some ceilings reductions
to some of the TAF sites... Notably around gnv, jax, vqq, and ssi
through about 12z-14z. A few showers and a storm expected around gnv
through 12z. Otherwise... Patchy MVFR fog stratus is possible. After
12z today... Probabilities of convection at TAF sites are lower than
yesterday and hence just have vcts for now by early aftn until about
00z-02z. Winds will be south-southwest at about 5-10 kt and turn to
the southeast for the coastal tafs this aftn.

Marine
South to southwest flow expected during the week with enhanced
southerly flow today due to low pressure inland. Scec headline was
placed in for the offshore waters today-tonight. Otherwise... Speeds
generally in the 10-15 knot range. Seas 2-4 ft will peak near 4-6 ft
for the offshore waters by Tuesday night.

Rip currents: a low end moderate risk today due to southeast wind
seas and onshore flow in the aftn. Similar conditions expected for
Tuesday.

Preliminary point temps pops
Amg 90 72 90 73 50 40 50 40
ssi 88 77 88 77 40 30 50 50
jax 91 73 91 74 40 30 50 40
sgj 88 75 89 74 40 30 60 40
gnv 91 73 90 74 40 20 50 30
ocf 89 73 88 74 40 30 50 40

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

Shashy peterson


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRDF1 - 8720030 - Fernandina Beach, FL 5 mi38 min WSW 2.9 G 8
41112 - Offshore Fernandina Beach, FL (132) 14 mi56 min 82°F3 ft
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 23 mi38 min W 6 G 8.9 74°F 82°F1008.5 hPa
DMSF1 23 mi50 min 82°F
BLIF1 23 mi38 min WSW 8 G 8.9
LTJF1 24 mi38 min 74°F 69°F
SAXG1 - Sapelo Island Reserve, GA 50 mi86 min SW 11 73°F 1009 hPa (+1.0)70°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 59 mi36 min SW 19 G 21 79°F 84°F4 ft1008.5 hPa (-0.3)72°F

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fernandina Beach Municipal Airport, FL9 mi31 minWSW 310.00 miFair73°F67°F83%1008.1 hPa
Jacksonville International Airport, FL17 mi30 minN 010.00 miMostly Cloudy71°F69°F94%1008.2 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL24 mi34 minWSW 510.00 miMostly Cloudy74°F69°F85%1008.1 hPa

Wind History from JAX (wind in knots)
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Last 24hrSW8W10SW7W9NW5SW4S14
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S8SW10SW4SW5SW4SW7S12SW4SW7SW4SW3S6S4CalmS4S3Calm
1 day agoW5SW6W55SW9NW9NW20
G37
W10SW11SW12W9SW8S4SW4S5SW5SW9SW7W3SW5SW5SW6SW9SW6
2 days agoS6S8SW6S7SW16
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NW10SW5SW4SW3SW6SW6SW5CalmS5W5SW4SW3W6SW5W4Calm

Tide / Current Tables for St. Marys, St. Marys River, Florida
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St. Marys
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Mon -- 12:49 AM EDT     0.69 feet Low Tide
Mon -- 03:16 AM EDT     Moonset
Mon -- 06:38 AM EDT     Sunrise
Mon -- 06:46 AM EDT     5.48 feet High Tide
Mon -- 12:49 PM EDT     0.28 feet Low Tide
Mon -- 05:15 PM EDT     Moonrise
Mon -- 07:29 PM EDT     6.47 feet High Tide
Mon -- 08:26 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.71.22.23.54.65.35.5542.81.50.60.30.81.93.34.65.76.46.45.74.63.1

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Mon -- 02:20 AM EDT     0.00 knots Slack
Mon -- 03:16 AM EDT     Moonset
Mon -- 05:12 AM EDT     1.47 knots Max Flood
Mon -- 06:38 AM EDT     Sunrise
Mon -- 07:47 AM EDT     -0.00 knots Slack
Mon -- 11:10 AM EDT     -1.97 knots Max Ebb
Mon -- 02:15 PM EDT     0.00 knots Slack
Mon -- 05:14 PM EDT     Moonrise
Mon -- 05:21 PM EDT     2.08 knots Max Flood
Mon -- 08:25 PM EDT     Sunset
Mon -- 08:30 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.9-1.4-0.40.71.31.51.40.8-0.3-1.3-1.8-2-1.8-1.3-0.30.91.82.121.70.7-0.6-1.4-1.8

Weather Map and Satellite Images
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wmap_A
GOES 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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (7,2,3,4)
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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.