Tuesday, June15, 2021
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Marine Weather and Tides
St. Marys, GA

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 6:21AMSunset 8:32PM Tuesday June 15, 2021 12:17 AM EDT (04:17 UTC) Moonrise 9:55AMMoonset 11:46PM Illumination 26% Phase: Waxing Crescent; Moon at 5 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- 913 Pm Edt Mon Jun 14 2021
Tonight..Southwest winds 10 to 15 knots. Seas 3 to 4 feet with a dominant period 8 seconds. A light chop on the intracoastal waters.
Tuesday..Southwest winds 10 to 15 knots increasing to 15 to 20 knots in the afternoon. Seas 3 to 4 feet with a dominant period 8 seconds. Choppy on the intracoastal waters. Slight chance of showers and Thunderstorms in the morning, then chance of showers and Thunderstorms in the afternoon.
Tuesday night..Southwest winds 15 to 20 knots. Seas 3 to 4 feet with a dominant period 8 seconds. Choppy on the intracoastal waters. Slight chance of showers and Thunderstorms.
Wednesday..West winds 10 to 15 knots becoming southwest 5 to 10 knots in the afternoon. Seas 2 to 3 feet. A moderate chop on the intracoastal waters. Chance of showers and Thunderstorms.
Wednesday night..Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Mostly smooth on the intracoastal waters. Slight chance of showers and Thunderstorms.
Thursday..Southwest winds 5 to 10 knots becoming south in the afternoon. Seas 2 to 3 feet. A light chop on the intracoastal waters. Slight chance of showers and Thunderstorms.
Thursday night..Southwest winds 5 to 10 knots. Seas 1 to 2 feet.
Friday..South winds 5 to 10 knots becoming southeast 10 knots in the afternoon. Seas 1 to 2 feet. Slight chance of showers and Thunderstorms.
Friday night..South winds 5 to 10 knots. Seas 2 to 3 feet.
Saturday..South winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Slight chance of showers and Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 913 Pm Edt Mon Jun 14 2021
Synopsis.. A dissipating frontal boundary will linger over the area into tonight. Another trough will move into region from the north Tuesday, then stall over area Wednesday into Thursday. A weak ridge will build to the east Friday into Saturday. Low pressure will track to the west then northwest of the region Sunday into Monday.
Gulf stream.. The approximate location of the west wall of the gulf stream as of jun 15, 2021 at 1200 utc... 62 nautical miles east of flagler beach. 71 nautical miles east of saint augustine beach. 84 nautical miles east of jacksonville beach. 101 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


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 150131 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 931 PM EDT Mon Jun 14 2021

. HOT ON TUESDAY WITH SCATTERED STRONG AND ISOLATED SEVERE STORMS POSSIBLE DURING THE AFTERNOON AND EVENING HOURS .

UPDATE.

Trof axis has slipped far enough southward to allow for convection to come to an end across NE FL, while drier airmass aloft across SE GA never really allowed much convection to develop earlier this evening. Mostly quiet with just high clouds during the overnight hours with West-Southwest flow increasing just enough towards morning to prevent much in the way of any significant fog formation. The light flow will keep low temps around 70 degrees inland and lower/middle 70s closer to the Atlc Coast. Next trof axis over the SE US still on track to push into the region Tuesday afternoon, but a pocket of drier airmass aloft during the morning hours pushing through the region should lead to a later start to convection pushing into the region from the Northwest with the trof axis with some Hi-Res models not kicking off the scattered storms until the mid-late afternoon hours, some of which could be strong to isolated severe due to the better dynamics aloft and surface heating which should reach the mid/upper 90s across SE GA and lower/middle 90s across NE FL as the West to Southwest winds at 10-15 mph with gusts of 20-25 mph push the heat all the way to the Atlc Beaches for most of the day.

PREV DISCUSSION [730 PM EDT].


Short Term. /through Wednesday/ .

Dissipating frontal boundary stretched east to west across area near the GA/FL line this afternoon. Areas along and south of this boundary will experience the greatest chance for showers and storms Today, due to better moisture. Storms will be possible across SE GA this afternoon north of the boundary, but the best chance for activity will be near the coast in SE GA due to convergence along the east coast sea breeze. The storms are expected to be slow movers, so in addition to the potential for a few strong storms, heavy rainfall is also expected with localized flooding possible. The activity will decrease in coverage toward midnight.

Another trough will move into the southeastern US Tonight into Tuesday morning, and enter SE GA in the afternoon. With a prevailing flow from the southwest the east coast sea breeze will be pinned pretty close to the coast. Best chance for convection across NE FL as west coast sea breeze moves inland, acting as a source of convergence in the diurnally unstable airmass. Organized convection could stretch up the east coast of SE GA as well. The convective activity will dissipate Tuesday evening.

For Wednesday, trough will sink a little further to the south. Closer to the FL/GA line. Drier air will move into SE GA behind the boundary, helping to limit best chance for convection over NE FL and coastal SE GA.

Lows will be near to a little above normal this period. Highs will trend above normal across SE GA Tuesday and Wednesday, but near to a little lower closer to central FL, due to cooling from cloud and shower coverage.

Long Term. /Wednesday night through Monday/ .

Boundary will linger over the area into Thursday as it dissipates. High pressure will build to the east Friday into Saturday, with troughing to the north. An area of low pressure will track to the west then northwest of the area Sunday into Monday. Precipitation chances will be more limited into Saturday, with chances increasing late in the weekend into next week.

Lows will trend near normal this period. Highs will be above normal over SE GA Thursday and Friday, and near to a little below over NE FL. Over the weekend into early next week, highs will be near to a little below normal.

AVIATION. [Through 00Z Wednesday]

Convection has faded quickly this evening near all of the TAF sites and expect just lingering high clouds for most of the night. With recent rainfall the inland TAF sites of GNV/VQQ might see some patchy late night fog in the 07-11Z time frame otherwise expect West winds to increase after sunrise to 10G15 knots at all TAF sites in the 13-14Z time frame with some SCT Cumulus clouds through the early afternoon hours. Expecting a later start to convection on Tuesday with a drier pocket of airmass aloft just ahead of the trof axis to arrive with scattered storms in the 19-21Z time frame or possibly later based on latest Hi-Res model runs, but for now will just include VCTS since most rainfall chances are less than 50 percent at TAF sites for Tue afternoon.

Marine.

A dissipating frontal boundary will linger over the area into Tonight. Another trough will move into region from the north Tuesday, then stall over area Wednesday into Thursday. A weak ridge will build to the east Friday into Saturday. Low pressure will track to the west then northwest of the region Sunday into Monday.

Rip Currents: SE GA: Low through Tuesday NE FL: Low through Tuesday

PRELIMINARY POINT TEMPS/POPS.

AMG 71 96 69 93 67 / 10 40 40 20 10 SSI 74 91 74 89 73 / 10 30 30 20 20 JAX 71 94 72 91 71 / 10 50 30 40 20 SGJ 71 92 73 90 72 / 10 50 20 40 20 GNV 70 91 72 89 70 / 20 60 30 60 20 OCF 72 89 73 89 71 / 20 50 30 40 30

JAX WATCHES/WARNINGS/ADVISORIES. FL . None. GA . None. AM . None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRDF1 - 8720030 - Fernandina Beach, FL 5 mi47 min S 2.9 G 8.9 81°F 82°F1013.4 hPa
41112 - Offshore Fernandina Beach, FL (132) 14 mi47 min 77°F 80°F2 ft
NFDF1 22 mi47 min SW 8 G 11 77°F 1013.2 hPa74°F
BLIF1 23 mi47 min SSW 8 G 11 76°F 1014.4 hPa76°F
DMSF1 23 mi47 min 82°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 23 mi47 min SSW 5.1 G 8.9 75°F 80°F1013.9 hPa
LTJF1 24 mi47 min 75°F 73°F
JXUF1 26 mi47 min 83°F
BKBF1 37 mi47 min 75°F 1013.6 hPa
SAXG1 - Sapelo Island Reserve, GA 50 mi77 min SSW 5.1 78°F 1013 hPa (+1.0)78°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 59 mi87 min SSW 9.7 G 12 78°F 79°F2 ft1012.4 hPa (+0.8)75°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 mi22 minSW 910.00 miFair75°F0°F%1013.5 hPa
Jacksonville International Airport, FL17 mi21 minSSW 410.00 miMostly Cloudy73°F71°F94%1013.1 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL24 mi25 minSW 510.00 miMostly Cloudy75°F73°F94%1013.3 hPa

Link to 5 minute data for KJAX

Wind History from JAX (wind in knots)
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Last 24hrCalmS3S3CalmS3CalmCalmW3W3W4W4N334CalmS10S8W5S4SW3CalmS4S5SW4
1 day agoW9W5W4W3CalmCalmN3Calm4333CalmE6E10E11E9S13SE6CalmW3CalmCalmCalm
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Tide / Current Tables for St. Marys, St. Marys River, Florida
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St. Marys
Click for Map
Tue -- 12:08 AM EDT     Moonset
Tue -- 01:17 AM EDT     6.85 feet High Tide
Tue -- 06:22 AM EDT     Sunrise
Tue -- 07:28 AM EDT     1.14 feet Low Tide
Tue -- 10:54 AM EDT     Moonrise
Tue -- 01:46 PM EDT     5.84 feet High Tide
Tue -- 07:32 PM EDT     1.25 feet Low Tide
Tue -- 08:30 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.46.86.75.94.63.11.91.21.2234.155.75.85.44.43.121.31.323.24.5

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Tue -- 12:06 AM EDT     Moonset
Tue -- 02:27 AM EDT     -0.00 knots Slack
Tue -- 05:05 AM EDT     -2.06 knots Max Ebb
Tue -- 06:23 AM EDT     Sunrise
Tue -- 09:27 AM EDT     0.00 knots Slack
Tue -- 10:54 AM EDT     Moonrise
Tue -- 11:47 AM EDT     1.53 knots Max Flood
Tue -- 02:39 PM EDT     -0.00 knots Slack
Tue -- 05:17 PM EDT     -1.74 knots Max Ebb
Tue -- 08:29 PM EDT     Sunset
Tue -- 09:13 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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21.40.5-0.6-1.6-2.1-1.9-1.5-1.1-0.40.51.31.51.10.5-0.3-1.2-1.7-1.6-1.2-0.8-0.20.71.7

Weather Map
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GEOS Local Image of Southeast    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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