Thursday, October18, 2018 L-36.com


Marine Weather and Tides
St. Augustine, FL

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:28AMSunset 6:52PM Thursday October 18, 2018 10:55 PM EDT (02:55 UTC) Moonrise 2:39PMMoonset 12:48AM Illumination 71% Phase: Waxing Gibbous; Moon at 9 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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AMZ454 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- 854 Pm Edt Thu Oct 18 2018
.small craft advisory in effect until 8 am edt Friday...
Rest of tonight..Northeast winds 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 6 seconds. Inland waters a moderate chop. Showers likely.
Friday..East northeast winds 10 to 15 knots. Seas 3 to 4 feet. Dominant period 7 seconds. Inland waters a light chop. Showers likely and a slight chance of Thunderstorms in the morning, then a chance of showers in the afternoon.
Friday night..East northeast winds 5 to 10 knots becoming west after midnight. Seas 2 to 4 feet. Dominant period 7 seconds. Inland waters smooth. A chance of showers in the evening, then a slight chance of showers after midnight.
Saturday..West southwest winds 5 to 10 knots becoming south southwest in the evening. Seas 2 to 4 feet. Dominant period 8 seconds. Inland waters a light chop. A slight chance of showers through the day. A slight chance of Thunderstorms in the afternoon.
Saturday night..West winds 10 to 15 knots becoming north northwest 15 to 20 knots after midnight. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a moderate chop. A chance of showers.
Sunday..North northeast winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Inland waters choppy.
Sunday night..Northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Inland waters choppy.
Monday and Monday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a moderate chop. A chance of showers.
Tuesday..East northeast winds 5 to 10 knots. Seas 2 to 4 feet. Inland waters a light chop. A chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 854 Pm Edt Thu Oct 18 2018
Synopsis.. Moderate northeasterly winds and rough seas expected over area waters through late tonight. A coastal trough will develop over the local waters by Friday morning then push east of the waters Friday night. A strong cold front will move across the region Saturday night trailed by a sharp increase in northwest to north winds. Moderate north to northeast winds and rough seas expected Sunday into Sunday night as the cold front moves well south of the waters and strong high pressure builds over the carolinas. Another low pressure will develop along the coast early next week.


7 Day Forecast for Marine Location Near St. Augustine, FL
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location: 29.88, -81.31     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 190109
afdjax
area forecast discussion
national weather service jacksonville fl
909 pm edt Thu oct 18 2018

Update
Stalled frontal boundary across NE fl with high pressure ridge
building north of the region over the carolinas. The onshore ne
flow will continue to drive scattered showers into the atlc coast
mainly south of jax directed at st johns flagler counties, some of
these will contain locally heavy rainfall with some locations
already picking up 1-2" today. Sky conditions will vary widely
from mostly cloudy along the coast and across portions of SE ga to
mostly clear at times across inland NE fl. Overall the clouds may
keep temps a bit warmer than forecast and have tweaked them up a
couple of degrees and expect the lower middle 60s confined to
inland SE ga suwannee valley with near 70 readings along coastal
se ga inland NE fl, then lower to middle 70s along the NE fl coast
in the onshore flow. The breezy NE flow will continue at the coast
overnight with some gusts to 20-25 mph at times, while inland the
winds will fall to 5 mph or so by morning. Some patchy fog will be
possible across inland NE fl, but not confident in any significant
fog at this time so have kept out of the forecast for now. The
weakening stalled frontal boundary in the area on Friday will
allow for a few showers at times, but overall expect partly mostly
cloudy skies with temps still above normal in the lower to middle
80s in most locations as the onshore NE flow off the atlc
continues to weaken and will not be as strong as today.

Aviation
Widespread MVFR CIGS tonight at all TAF sites with possible ifr
vsbys in showers at sgj. NE winds will weaken slowly overnight and
over inland TAF sites of vqq gnv some patchy MVFR vsbys in fog
possible towards morning especially if some breaks develop in the
clouds. On Friday expect MVFR CIGS in the morning to slowly lift
towardsVFR by the afternoon hours with enough moisture to
continue at least vcsh at all TAF sites.

Marine
Will keep small craft advisory flags flying tonight as NE winds
still close to 20 knots and seas 4-7 ft continue. Will likely be
able to drop headlines on Friday as winds seas slowly subside.

Rip currents: elevated risk of rip currents continues in the
onshore flow.

Preliminary point temps pops
Amg 64 82 65 88 10 10 10 30
ssi 71 79 69 86 30 30 20 20
jax 70 84 68 89 30 40 20 20
sgj 75 83 69 86 60 50 20 20
gnv 71 87 67 89 30 50 10 20
ocf 71 88 69 90 20 40 10 20

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... Small craft advisory until 8 am edt Friday for 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-waters from altamaha sound ga to
fernandina beach fl from 20 to 60 nm-waters from fernandina
beach to st. Augustine fl from 20 to 60 nm-waters from st.

Augustine to flagler beach fl from 20 to 60 nm.

Hess mcginnis bricker


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAUF1 - St. Augustine, FL 3 mi55 min NE 15 G 17 78°F 82°F1024 hPa (+1.6)
RCYF1 14 mi55 min 83°F
GTXF1 - Guana Tolomato Matanzas Reserve, FL 16 mi70 min NE 7 80°F 1024 hPa75°F
LTJF1 35 mi55 min 79°F 71°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 36 mi55 min ENE 17 G 21 78°F 82°F1024.8 hPa (+1.0)
DMSF1 37 mi55 min 82°F
BLIF1 37 mi55 min ENE 9.9 G 15 78°F 1025.5 hPa (+0.9)78°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Northeast Florida Regional Airport, FL6 mi59 minENE 1310.00 miLight Rain77°F73°F90%1024.1 hPa

Wind History from SGJ (wind in knots)
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Last 24hrCalmCalmW5W3NW5NW3CalmCalmCalm--NW5N10N11NE12NE11NE10NE11NE11NE14NE13
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1 day agoSE8S7--S6S7SW5SW4W3SW5SW3SW5S7SW6W5CalmSE11SE9SE12SE11SE9SE7SE6S6S5
2 days ago--SE4SE3S4S3S3SW3S3CalmS5S5S9S8S4SE11E11SE12SE11SE11SE10SE9SE8SE9SE7

Tide / Current Tables for St. Augustine, city dock, Florida
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St. Augustine
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Thu -- 01:48 AM EDT     Moonset
Thu -- 04:03 AM EDT     4.16 feet High Tide
Thu -- 07:29 AM EDT     Sunrise
Thu -- 10:26 AM EDT     1.40 feet Low Tide
Thu -- 03:38 PM EDT     Moonrise
Thu -- 04:31 PM EDT     4.71 feet High Tide
Thu -- 06:51 PM EDT     Sunset
Thu -- 11:05 PM EDT     1.42 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.12.83.544.243.632.41.81.41.522.73.64.34.74.74.33.732.31.71.4

Tide / Current Tables for East Tocoi, St. Johns River, Florida (4)
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East Tocoi
Click for Map
Thu -- 01:49 AM EDT     Moonset
Thu -- 05:35 AM EDT     0.79 feet Low Tide
Thu -- 07:30 AM EDT     Sunrise
Thu -- 10:33 AM EDT     0.97 feet High Tide
Thu -- 03:39 PM EDT     Moonrise
Thu -- 05:42 PM EDT     0.78 feet Low Tide
Thu -- 06:52 PM EDT     Sunset
Thu -- 11:07 PM EDT     1.06 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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110.90.90.80.80.80.80.90.9110.90.90.90.80.80.80.80.80.9111.1

Weather Map and Satellite Images
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GOES Local Image of    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 (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.