Thursday, July18, 2019 L-36.com


Marine Weather and Tides
St. Marys, GA

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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 6:34AMSunset 8:30PM Thursday July 18, 2019 2:03 PM EDT (18:03 UTC) Moonrise 8:58PMMoonset 7:01AM Illumination 97% Phase: Waning Gibbous; Moon at 16 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- 852 Am Edt Thu Jul 18 2019
Rest of today..South southeast winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 6 seconds. Inland waters a light chop. A slight chance of showers and Thunderstorms.
Tonight..South southwest winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a moderate chop. A slight chance of showers and Thunderstorms.
Friday..South winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop. A chance of showers and Thunderstorms.
Friday night..South southwest winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop. A slight chance of showers and Thunderstorms.
Saturday..South southwest winds 5 to 10 knots becoming south southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Inland waters a light chop. A slight chance of showers and Thunderstorms.
Saturday night..South winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and Thunderstorms.
Sunday..South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and a slight chance of Thunderstorms.
Sunday night..South southwest winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and Thunderstorms.
Monday..South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and a slight chance of Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 852 Am Edt Thu Jul 18 2019
Synopsis.. The region will be between high pressure to the east-southeast and a trough of low pressure to the northwest into early next week.
Gulf stream.. The approximate location of the west wall of the gulf stream as of jul 18, 2019 at 1200 utc... 53 nautical miles east of flagler beach. 65 nautical miles east of saint augustine beach. 77 nautical miles east of jacksonville beach. 92 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 181350
afdjax
area forecast discussion
national weather service jacksonville fl
950 am edt Thu jul 18 2019

Continued hot and humid with scattered storms...

Update
High pressure ridge axis responsible for the widespread heat and
humidity continues to slowly flatten and drift southward today.

This combined with a few high clouds will take just a slight edge
off the temps this afternoon, but overall still expect highs in
the lower to middle 90s across NE fl and middle to upper 90s
across SE ga and still combined with the humidity expect heat
indices "feels-like" values still peaking around 105 degrees early
to mid afternoon hours. Morning soundings showing just a slight
nudge downward in precipitable water amounts (pwats) into the 1.8"
to 2.0" range along with some slight warming at 500mb to around -6c.

This all leads to slightly less storm coverage to 40-50% this
afternoon and early evening and with ridge axis weakening even
slower storm motion around 5 mph or less as sea breeze fronts push
even slower inland and storm mergers outflows taking over through
the rest of the afternoon and evening. Isolated strong to severe
storms with 40-60 mph winds still possible in local wet microburst
potential in the most intense storms. The usual decrease in storm
activity after sunset with the all-clear around midnight. The
slight increase in westerly flow aloft across SE ga will push a
few of the storms all the way to the beaches, while storms along
the east coast sea breeze in NE fl should just stay inland from
the coast and drift slowly southwest through the rest of the day.

Aviation
MainlyVFR conds this morning with a few high clouds, otherwise
deep moisture in place will continue a chance for storms at the
taf sites once again today, just a bit later than y'day with
timing mainly in the 19-22z time frame with tempo gusty winds to
25 knots and potential ifr vsbys and MVFR cigs. Again becoming
vfr after 00z as storms fade again after sunset.

Marine
High pressure ridge axis across the waters will continue south
winds through tonight at 10-15 knots with seas 1-3 ft. Just enough
upwelling to continue to drop sauf1 (st augustine pier) water
temps down into the upper 70s during the morning hours. Storms
will develop once again right at the sea breeze along the coast
and will mainly stay inland along NE fl coast, but may push into
the nearshore SE ga waters with some light westerly winds aloft.

Preliminary point temps pops
Amg 97 73 92 73 40 30 40 20
ssi 90 77 90 76 40 20 30 20
jax 94 74 93 74 50 20 40 20
sgj 91 75 90 75 40 20 40 20
gnv 93 73 91 73 50 20 40 20
ocf 92 73 91 73 50 20 40 20

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

Hess bricker


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRDF1 - 8720030 - Fernandina Beach, FL 5 mi45 min S 5.1 G 8 94°F 86°F1019.5 hPa
41112 - Offshore Fernandina Beach, FL (132) 14 mi33 min 84°F1 ft
NFDF1 22 mi45 min S 2.9 G 5.1 87°F 1020.8 hPa
BLIF1 23 mi45 min WSW 4.1 G 5.1 90°F 1020.2 hPa77°F
DMSF1 23 mi45 min 85°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 23 mi45 min SE 6 G 8.9 88°F 82°F1019.4 hPa
LTJF1 24 mi45 min 89°F 75°F
SAXG1 - Sapelo Island Reserve, GA 50 mi63 min S 11 91°F 1018 hPa (-1.0)78°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 59 mi73 min SW 14 G 16 82°F 85°F2 ft1018.4 hPa (+0.0)77°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 mi68 minS 710.00 miPartly Cloudy90°F75°F62%1019 hPa
Jacksonville International Airport, FL17 mi67 minS 610.00 miMostly Cloudy90°F75°F62%1018.9 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL24 mi71 minE 710.00 miOvercast89°F75°F63%1019.1 hPa

Wind History from JAX (wind in knots)
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Last 24hrCalmE13NW9W7W11W8W5SW4W3S6S5W5S4NW3W3CalmCalmS3CalmS3S4W7SW7S6
1 day ago3N3SE7SE8SE7S9SW3CalmNW3W3CalmCalmNW3CalmCalmCalmCalmSW3SW3W5W5N6NW53
2 days ago5NW6N4NW6CalmS7SW9W5S4W5SW5W4W3SW3CalmCalmCalmW3W5W5W7NW4W64

Tide / Current Tables for St. Marys, St. Marys River, Florida
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St. Marys
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Thu -- 05:09 AM EDT     0.61 feet Low Tide
Thu -- 06:35 AM EDT     Sunrise
Thu -- 08:00 AM EDT     Moonset
Thu -- 11:13 AM EDT     5.97 feet High Tide
Thu -- 05:04 PM EDT     0.67 feet Low Tide
Thu -- 08:29 PM EDT     Sunset
Thu -- 09:57 PM EDT     Moonrise
Thu -- 11:42 PM EDT     6.84 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.75.74.22.61.20.60.91.93.24.55.565.84.93.62.31.20.71.12.13.54.866.7

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Thu -- 12:00 AM EDT     -0.00 knots Slack
Thu -- 03:19 AM EDT     -2.04 knots Max Ebb
Thu -- 06:35 AM EDT     Sunrise
Thu -- 06:45 AM EDT     0.00 knots Slack
Thu -- 08:00 AM EDT     Moonset
Thu -- 09:07 AM EDT     1.62 knots Max Flood
Thu -- 12:06 PM EDT     -0.00 knots Slack
Thu -- 02:46 PM EDT     -1.94 knots Max Ebb
Thu -- 06:33 PM EDT     0.00 knots Slack
Thu -- 08:27 PM EDT     Sunset
Thu -- 09:18 PM EDT     2.23 knots Max Flood
Thu -- 09:56 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0-1.2-1.9-2-2-1.6-0.80.31.21.61.510.1-1.1-1.8-1.9-1.8-1.4-0.60.51.62.22.11.7

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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Wind Forecast for Jacksonville, FL (14,3,4,5)
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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.