Thursday, July2, 2020
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Marine Weather and Tides
St. Marys, 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 6:26AMSunset 8:34PM Thursday July 2, 2020 6:21 PM EDT (22:21 UTC) Moonrise 5:18PMMoonset 3:05AM Illumination 92% Phase: Waxing Gibbous; Moon at 12 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- 222 Pm Edt Thu Jul 2 2020
Tonight..West winds 10 knots. Seas 2 to 3 feet. Dominant period 9 seconds. Inland waters a light chop. Showers and Thunderstorms likely.
Friday..North northwest winds 5 to 10 knots becoming east southeast in the afternoon. Seas 1 to 2 feet. Dominant period 9 seconds. Inland waters a light chop. Showers and Thunderstorms likely.
Friday night..South southeast winds 5 to 10 knots becoming west southwest after midnight. Seas 1 to 2 feet. Dominant period 9 seconds. Inland waters smooth. A chance of showers and Thunderstorms.
Saturday..East winds 5 to 10 knots becoming southeast in the afternoon. Seas 1 to 2 feet. Dominant period 9 seconds. Inland waters a light chop. Showers and a chance of Thunderstorms.
Saturday night..South southwest winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 8 seconds. Inland waters smooth. A chance of showers and a slight chance of Thunderstorms.
Sunday..South winds 5 to 10 knots. Seas 2 feet. Dominant period 9 seconds. Inland waters a light chop. Showers and a slight chance of Thunderstorms.
Sunday night and Monday..South southwest winds 5 to 10 knots. Seas 2 to 3 feet. Showers and a chance of Thunderstorms.
Monday night and Tuesday..Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Showers likely and a chance of Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 222 Pm Edt Thu Jul 2 2020
Synopsis.. A trough of low pressure to the north will sink south into the area and stall this weekend. An unsettled weather pattern is expected with scattered to numerous showers and Thunderstorms.
Gulf stream.. The approximate location of the west wall of the gulf stream as of jul 02, 2020 at 1200 utc... 67 nautical miles east of flagler beach. 74 nautical miles east of saint augustine beach. 85 nautical miles east of jacksonville beach. 105 nautical miles east 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 021939 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 339 PM EDT Thu Jul 2 2020

. UNSETTLED PATTERN WITH LOCALLY HEAVY RAINFALL THORUGH THE WEEKEND .

NEAR TERM [Tonight through Friday]. Subsidence in wake of upper shorwave trough off the se coast has limited convection over most of the area so far today. Expect shower/thunderstorm activity now to the south in an area of higher instability to move offshore early this evening. Additional activity may affect se Ga this evening as upstream convection moves south. E-W troughing to the north will reach the Ga-Fl border on Friday continuing the scattered to numerous areas of convection. Warming temperatures aloft with a slower cell motion will increase the chance for locally heavy rainfall Friday afternoon/evneing.

SHORT TERM [Friday night through Sunday night]. Upper low off the mid-Atlantic coast with move further east leaving a nearly stationary trough back across the Gulf coast region. Weak steering winds and deep moisture remaining over the area will result in areas of locally heavy rainfall this weekend. Showers and thunderstorms will continue to be most numerous during the afternoon and evening hours as daytime heating increases instabilty. Warming temperatures aloft should keep the severe threat low with more of a localized flooding concern.

LONG TERM [Monday Through Thursday]. Models show weak low pressure forming near the central Gulf coast and then slowly moving to the northeast to near the southeast coast by mid/late week. Models differ with the movement of the low as the GFS lingers it over the se through next week. Unsettled weather will likely continue with concensus pops above average through the period.

MARINE. Surface trough/front to the north will sink south into the area and stall this weekend. Low pressure will form to the west and move northeast lifting the front back north early next week. Winds and sea will remain low through the period. Scattered to numerous showers and storms expected into early next week.

Rip Currents: Low to moderate risk through Friday.

PRELIMINARY POINT TEMPS/POPS.

AMG 73 93 72 92 72 / 50 30 20 50 20 SSI 76 88 76 87 76 / 60 10 30 50 40 JAX 74 91 74 89 73 / 30 50 40 70 40 SGJ 74 89 74 86 73 / 40 60 50 80 50 GNV 73 90 73 87 73 / 20 70 50 90 50 OCF 74 90 74 88 74 / 10 60 50 90 50

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 mi51 min ENE 2.9 G 4.1 89°F 83°F1010.7 hPa
41112 - Offshore Fernandina Beach, FL (132) 14 mi55 min 84°F1 ft
NFDF1 22 mi51 min W 7 G 12 93°F 86°F
BLIF1 23 mi51 min W 11 G 15 95°F 1011.5 hPa73°F
DMSF1 23 mi51 min 86°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 23 mi51 min ENE 8 G 11 83°F 82°F1011.3 hPa
LTJF1 24 mi51 min 84°F 75°F
JXUF1 26 mi51 min 87°F
SAXG1 - Sapelo Island Reserve, GA 50 mi81 min NW 7 95°F 1011 hPa (-1.0)73°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 59 mi31 min SSE 5.8 G 7.8 83°F 84°F1 ft1010.4 hPa (-1.7)74°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 mi26 minENE 810.00 miThunderstorm in Vicinity88°F81°F81%1010.8 hPa
Jacksonville International Airport, FL17 mi25 minW 1210.00 miMostly Cloudy92°F70°F49%1010.4 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL24 mi29 minENE 910.00 miMostly Cloudy83°F75°F77%1010.9 hPa

Link to 5 minute data for KJAX

Wind History from JAX (wind in knots)
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Last 24hrW9CalmW4W7W4SW4SW6W4W3S3W4SW5SW4SW5W8W12
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1 day agoW7
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2 days agoW7W5CalmW6W7W7W5W6W6W4W4CalmW4W8W7NW66W6W7W5W11
G31
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Tide / Current Tables for St. Marys, St. Marys River, Florida
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St. Marys
Click for Map
Thu -- 01:31 AM EDT     0.56 feet Low Tide
Thu -- 04:05 AM EDT     Moonset
Thu -- 06:27 AM EDT     Sunrise
Thu -- 07:33 AM EDT     6.35 feet High Tide
Thu -- 01:33 PM EDT     0.03 feet Low Tide
Thu -- 06:17 PM EDT     Moonrise
Thu -- 08:19 PM EDT     7.68 feet High Tide
Thu -- 08:32 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.70.70.71.52.84.35.56.26.35.64.32.71.20.20.112.54.25.877.67.56.65

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Thu -- 03:02 AM EDT     0.00 knots Slack
Thu -- 04:05 AM EDT     Moonset
Thu -- 05:32 AM EDT     1.84 knots Max Flood
Thu -- 06:27 AM EDT     Sunrise
Thu -- 08:26 AM EDT     -0.00 knots Slack
Thu -- 11:10 AM EDT     -2.30 knots Max Ebb
Thu -- 02:50 PM EDT     0.01 knots Slack
Thu -- 05:49 PM EDT     2.74 knots Max Flood
Thu -- 06:16 PM EDT     Moonrise
Thu -- 08:31 PM EDT     Sunset
Thu -- 09:09 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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-2.3-1.9-1.2-01.11.81.81.40.5-0.8-1.9-2.3-2.2-1.8-10.21.52.52.72.41.60.3-1.2-2.1

Weather Map
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wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (18,4,5,8)
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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 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.