Thursday, August22, 2019 L-36.com


Marine Weather and Tides
St. Marys, GA

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:55AMSunset 8:02PM Thursday August 22, 2019 10:45 PM EDT (02:45 UTC) Moonrise 11:19PMMoonset 12:04PM Illumination 50% Phase: Third Quarter Moon; Moon at 22 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- 807 Pm Edt Thu Aug 22 2019
Rest of tonight..South southeast winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Inland waters a light chop.
Friday..East southeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 6 seconds. Inland waters a light chop.
Friday night..South southeast winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 6 seconds. Inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Saturday..Southeast winds around 5 knots becoming east southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Dominant period 6 seconds. Inland waters a light chop. A chance of showers and Thunderstorms.
Saturday night..Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 6 seconds. Inland waters a light chop. A chance of showers and Thunderstorms.
Sunday..Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 6 seconds. Inland waters a light chop. Showers and Thunderstorms likely.
Sunday night..East winds 5 to 10 knots becoming northeast after midnight. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
Monday..East northeast winds around 5 knots becoming southeast in the afternoon. Seas 2 to 3 feet. Showers and Thunderstorms likely.
Monday night..South southwest winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
Tuesday..South southwest winds 5 to 10 knots. Seas 2 to 3 feet. Showers and Thunderstorms likely.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 807 Pm Edt Thu Aug 22 2019
Synopsis.. Atlantic ridging extending its axis across the northeast florida waters tonight will slowly weaken and shift eastward as a tropical disturbance currently over the bahamas slowly organizes and moves northwestward towards the florida peninsula. This system will pivot northward and northeastward during the weekend, passing east of our local waters as it continues to gradually organize. Seas offshore may build slightly by Saturday night as this system makes its closest approach, but winds and seas will subside by early next week as this low pressure system accelerates northeastward away from the southeast u.s. Coast. Prevailing onshore winds this weekend will shift to southwesterly by Tuesday as a frontal boundary sinks southward towards the georgia waters.
Gulf stream.. The approximate location of the west wall of the gulf stream as of aug 22, 2019 at 1200 utc... 61 nautical miles east southeast of flagler beach. 72 nautical miles east of saint augustine beach. 84 nautical miles east of jacksonville beach. 92 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 230055
afdjax
area forecast discussion
national weather service jacksonville fl
855 pm edt Thu aug 22 2019

Update
No changes made to the forecast as much of the area has remained
precipitation free this evening. Only a few isolated showers have
formed along the sea-breeze as its pushed inland. With partly
cloudy skies, GOES derived total precipitable water reveals a
broad region of "dry" air from CAPE canaveral to brunswick, ga
(pwats 1.6-1.8 inches). This verifies well with this evening's
upper air balloon which observed a pwat of 1.76 inches. Under
mostly clear skies tonight, temperatures drop into the low to mid
70s with coastal areas remaining warm in the upper 70s. Some
patchy ground fog is possible tomorrow morning, but widespread
issues are not expected.

For tomorrow, expectations are very similar to today as the
tropical wave axis slowly moves in from the southeast. Section of
drier air observed via ua satellite is forecast to stay through
tomorrow before slowly eroding on Saturday.

Aviation
Not many changes made to 12z TAF package. Light easterly winds
continue into the evening with the east coast sea-breeze moving
inland.VFR conditions prevail until early morning hours where
some light ground fog is possible at area TAF sites.

Marine
Winds are around 10-15 knots this evening over area waters with
waves 1-2 feet. Over the next few days, an area of disorganized
showers and thunderstorms will move out of the bahamas and up the
florida coast. Odds are slowly increasing that organization into a tropical
system is possible. NHC recently increased 48 hour development
probability to 30% and 5-day probability to 50%.

Rip currents: low risk.

Preliminary point temps pops
Amg 73 94 73 93 10 20 10 50
ssi 79 90 79 89 10 10 10 20
jax 74 92 75 92 10 10 10 30
sgj 78 90 78 90 10 10 10 30
gnv 72 94 73 93 10 20 10 50
ocf 72 93 73 93 10 40 10 50

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

Mcginnis


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRDF1 - 8720030 - Fernandina Beach, FL 5 mi45 min 86°F 87°F1018.2 hPa (+0.9)
41112 - Offshore Fernandina Beach, FL (132) 14 mi45 min 84°F2 ft
NFDF1 22 mi45 min SE 4.1 G 5.1 80°F 1019.7 hPa (+1.2)
BLIF1 23 mi45 min SE 4.1 G 5.1 82°F 1018.7 hPa (+1.0)82°F
DMSF1 23 mi45 min 86°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 23 mi45 min SSE 2.9 G 6 82°F 85°F1017.9 hPa (+0.8)
LTJF1 24 mi45 min 83°F
JXUF1 26 mi45 min 85°F
SAXG1 - Sapelo Island Reserve, GA 50 mi45 min SSE 6 82°F 1017 hPa (+1.0)76°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 59 mi55 min SSE 12 G 14 83°F 83°F2 ft1017.1 hPa (+0.8)79°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 mi50 minno data10.00 miFair82°F77°F85%1017.6 hPa
Jacksonville International Airport, FL17 mi49 minSSE 710.00 miA Few Clouds81°F75°F85%1017.2 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL24 mi53 minSSE 710.00 miPartly Cloudy83°F75°F79%1017.3 hPa

Link to 5 minute data for KJAX

Wind History from JAX (wind in knots)
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Last 24hr--------CalmCalm----Calm--CalmCalmCalmCalmCalmSE6E8E12SE9SE10E12SE11SE8SE7
1 day ago--------Calm--CalmCalmE4----4SE7SE7S4S5S7E4E5E10SE10SE8SE7SE8
2 days ago--------SW3--Calm--W3CalmCalmCalmCalmCalmE3CalmNE6Calm--E6E6SE6SE5SE4

Tide / Current Tables for St. Marys, St. Marys River, Florida
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St. Marys
Click for Map
Thu -- 02:14 AM EDT     5.38 feet High Tide
Thu -- 06:56 AM EDT     Sunrise
Thu -- 08:19 AM EDT     0.50 feet Low Tide
Thu -- 01:04 PM EDT     Moonset
Thu -- 02:43 PM EDT     5.72 feet High Tide
Thu -- 08:01 PM EDT     Sunset
Thu -- 08:57 PM EDT     1.08 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.14.95.45.24.53.3210.50.71.52.63.84.95.65.75.34.33.121.31.11.42.3

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Thu -- 12:27 AM EDT     1.68 knots Max Flood
Thu -- 03:20 AM EDT     -0.00 knots Slack
Thu -- 06:06 AM EDT     -1.89 knots Max Ebb
Thu -- 06:56 AM EDT     Sunrise
Thu -- 10:02 AM EDT     0.00 knots Slack
Thu -- 12:50 PM EDT     2.19 knots Max Flood
Thu -- 01:03 PM EDT     Moonset
Thu -- 03:54 PM EDT     -0.00 knots Slack
Thu -- 06:32 PM EDT     -1.95 knots Max Ebb
Thu -- 08:00 PM EDT     Sunset
Thu -- 10:47 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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1.61.610.3-0.6-1.5-1.9-1.7-1.3-0.8-011.92.21.70.8-0.1-1.1-1.8-1.9-1.5-1.1-0.60.2

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (22,6,7,8)
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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 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.