Monday, January27, 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 7:19AMSunset 5:58PM Monday January 27, 2020 8:09 PM EST (01:09 UTC) Moonrise 9:16AMMoonset 8:36PM Illumination 9% 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- 320 Pm Est Mon Jan 27 2020
Tonight..North northwest winds 10 to 15 knots. Seas 2 to 3 feet building to 3 to 5 feet with occasional seas up to 6 feet after midnight. Dominant period 11 seconds. Inland waters a light chop. A slight chance of showers this evening.
Tuesday..North winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet subsiding to 2 to 3 feet in the afternoon. Dominant period 11 seconds. Inland waters a moderate chop.
Tuesday night..North northeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 11 seconds. Inland waters smooth.
Wednesday..East northeast winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 11 seconds. Inland waters a light chop. A chance of showers.
Wednesday night..East northeast winds 10 to 15 knots becoming north 15 to 20 knots after midnight. Seas 2 to 3 feet building to 3 to 5 feet with occasional seas up to 6 feet after midnight. Dominant period 4 seconds. Inland waters a moderate chop. Showers likely.
Thursday..North winds 20 to 25 knots with gusts to around 35 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 6 seconds. Inland waters choppy.
Thursday night..North northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. A slight chance of showers.
Friday and Friday night..North winds 10 to 15 knots. Seas 2 to 4 feet. Showers likely.
Saturday..North northwest winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 320 Pm Est Mon Jan 27 2020
Synopsis.. Weak wave will move east of the region this evening, with high pressure building from the northwest tonight through Tuesday. The high will move to the north northeast Tuesday night into Wednesday. An area of low pressure will move east from the gulf Wednesday afternoon, and cross the region Wednesday night into Thursday morning. High pressure will build from the north Thursday afternoon. Low pressure will affect the region again Friday into Friday night. High pressure will build from the west over the weekend.
Gulf stream.. The approximate location of the west wall of the gulf stream as of jan 25, 2020 at 1200 utc... 59 nautical miles east of flagler beach. 66 nautical miles east of saint augustine beach. 73 nautical miles east of jacksonville beach. 74 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 272359 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 659 PM EST Mon Jan 27 2020

AVIATION. [Through 00Z Wednesday]

MVFR ceilings around 2500 feet will overspread the regional terminals this evening, reaching SSI towards 01Z, the Duval County terminals by 03Z and GNV/SGJ after 04Z. VFR conditions should then prevail towards 04Z at SSI, after 05Z at the Duval County terminals and by 07Z at GNV/SGJ. Light west-northwesterly surface winds will strengthen to around 5 knots towards 06Z. VFR conditions will prevail on Tuesday, with sustained surface winds becoming northerly and increasing to near 10 knots after 13Z.

PREV DISCUSSION [340 PM EST].

Near Term. /Through Tonight/ .

Upper trough and associated light rain showers will move east of the region this evening, with high pressure building to the northwest through the night. As a result skies will clear from north to south through the night. Patchy fog will be possible, especially inland, due to clearing skies, moist low levels and light winds.

Lows will range from around 40 inland to the middle 40s near the coast.

Short Term. /Tuesday through Friday/ .

High pressure will build from the north Tuesday through Tuesday night. The high will move to the northeast Wednesday, as a gulf low moves east into the forecast area Wednesday afternoon. This low will then cross the region through Wednesday night. As the low off the coast moves slowly to the east, high pressure will build from the northwest Thursday. There is a chance for rain Wednesday into Wednesday night. The high will build from the north Thursday night. Yet another low will cross gulf and into the region Friday with rain chances returning.

Temperatures will trend near seasonal levels through this period.

Long Term. /Friday night through Monday/ .

The gulf low will slowly cross area Friday night into Saturday. Rain chances associated with this feature expected Friday night into Saturday night. High pressure will build from the west Saturday night through Sunday, then overhead Sunday night into Monday. Mainly clear skies expected Sunday into Monday.

Temperatures will trend near seasonal levels through this period.

Marine.

Weak wave will move east of the region this evening, with high pressure building from the northwest Tonight through Tuesday. The high will move to the north northeast Tuesday night into Wednesday. An area of low pressure will move east from the gulf Wednesday afternoon, and cross the region Wednesday night into Thursday morning. High pressure will build from the north Thursday afternoon. Low pressure will affect the region again Friday into Friday night. High pressure will build from the west over the weekend. Rip Currents: Moderate risk through Tuesday.

PRELIMINARY POINT TEMPS/POPS.

AMG 41 62 39 61 45 / 10 10 0 40 60 SSI 47 60 45 61 49 / 10 10 0 30 70 JAX 44 64 43 66 49 / 10 10 0 30 60 SGJ 47 62 47 66 51 / 10 10 0 30 60 GNV 45 65 42 68 47 / 10 10 0 40 40 OCF 45 67 42 71 48 / 10 10 0 30 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 mi51 min NNW 2.9 G 4.1
41112 - Offshore Fernandina Beach, FL (132) 14 mi39 min 57°F1 ft
NFDF1 22 mi51 min Calm G 1 60°F
BLIF1 23 mi57 min WNW 2.9 G 5.1 63°F 1014 hPa48°F
DMSF1 23 mi51 min 59°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 23 mi57 min NE 1.9 G 1.9 60°F 59°F1013.4 hPa
LTJF1 24 mi57 min 61°F 49°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 59 mi79 min WNW 9.7 G 9.7 58°F 57°F2 ft1013.1 hPa (+1.0)53°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 mi74 minN 010.00 miOvercast58°F53°F87%1013.2 hPa
Jacksonville International Airport, FL17 mi73 minNW 410.00 miMostly Cloudy61°F46°F58%1013.1 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL24 mi77 minN 010.00 miMostly Cloudy60°F50°F70%1013.1 hPa

Link to 5 minute data for KJAX

Wind History from JAX (wind in knots)
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Last 24hrNW4NW4CalmCalmN4N3CalmS4N4CalmCalmN3CalmNE3NE3CalmS4SW6SW6SW7W8NW6NW3NW4
1 day agoW5W4NW4NW5W6W6NW3W4N3NW3W5CalmCalmNW4NW9NW9W7NW8NW10N9NW6NW5NW4NW3
2 days agoS4SW8SW7SW7W9W7W6W6W7W5W4W6W6NW8NW10W10W11W10
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Tide / Current Tables for St. Marys, St. Marys River, Florida
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St. Marys
Click for Map
Mon -- 04:33 AM EST     0.26 feet Low Tide
Mon -- 07:20 AM EST     Sunrise
Mon -- 09:15 AM EST     Moonrise
Mon -- 11:08 AM EST     6.48 feet High Tide
Mon -- 05:09 PM EST     0.43 feet Low Tide
Mon -- 05:57 PM EST     Sunset
Mon -- 08:36 PM EST     Moonset
Mon -- 11:18 PM EST     5.81 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.242.61.20.40.41.12.43.85.166.56.25.23.82.210.40.71.734.25.35.8

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Mon -- 02:16 AM EST     -1.91 knots Max Ebb
Mon -- 06:04 AM EST     0.00 knots Slack
Mon -- 07:19 AM EST     Sunrise
Mon -- 08:47 AM EST     2.11 knots Max Flood
Mon -- 09:14 AM EST     Moonrise
Mon -- 12:07 PM EST     -0.00 knots Slack
Mon -- 02:59 PM EST     -1.96 knots Max Ebb
Mon -- 05:57 PM EST     Sunset
Mon -- 06:49 PM EST     0.00 knots Slack
Mon -- 08:36 PM EST     Moonset
Mon -- 09:14 PM EST     1.68 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.5-1.5-1.9-1.8-1.6-1-0.111.92.11.81.20.2-1.1-1.8-2-1.9-1.5-0.80.21.21.71.61.1

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 (20,4,5,8)
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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 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.