Saturday, August17, 2019

Marine Weather and Tides
Marineland, FL

Version 3.4
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 Allen

Sunrise 6:52AMSunset 8:05PM Saturday August 17, 2019 7:45 PM EDT (23:45 UTC) Moonrise 8:38PMMoonset 7:36AM Illumination 94% Phase: Waning Gibbous; Moon at 17 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 Expires:201908181000;;797442 Fzus52 Kjax 172243 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 643 Pm Edt Sat Aug 17 2019 Atlantic Coastal Waters From Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm. Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves, Along With The Occasional Height Of The Average Highest 1/10 Of The Waves. Amz452-454-181000- Coastal Waters From Fernandina Beach To St. Augustine Fl Out 20 Nm- Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 643 Pm Edt Sat Aug 17 2019
.small craft exercise caution...
Tonight..Southwest winds 15 to 20 knots. Seas 2 to 3 feet. Dominant period 7 seconds. Inland waters a moderate chop. A chance of showers and Thunderstorms.
Sunday..South southwest winds 5 to 10 knots becoming south southeast in the afternoon. Seas 2 to 3 feet. Dominant period 9 seconds. Inland waters a light chop. Showers and Thunderstorms likely.
Sunday night..Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 7 seconds. Inland waters a light chop. A chance of showers and Thunderstorms.
Monday..South southwest winds around 5 knots becoming southeast in the afternoon. Seas 2 feet. Dominant period 7 seconds. Inland waters smooth. A chance of showers and Thunderstorms.
Monday night..South winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 6 seconds. Inland waters a light chop. A chance of showers and Thunderstorms.
Tuesday..East southeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters a light chop. Showers likely and a slight chance of Thunderstorms.
Tuesday night..South southeast winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
Wednesday..South southeast winds 5 to 10 knots. Seas 2 to 3 feet. Showers and a slight chance of Thunderstorms.
Wednesday night..South southwest winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
Thursday..South southeast winds 5 to 10 knots. Seas 2 to 3 feet. Showers and a slight chance of Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 643 Pm Edt Sat Aug 17 2019
Synopsis.. Broad low pressure across georgia will track northeast away from the local waters tonight and Sunday. High pressure will strengthen over central florida Monday, then build across north florida Tuesday through Thursday.
Gulf stream.. The approximate location of the west wall of the gulf stream as of aug 17, 2019 at 1200 utc... 62 nautical miles east of flagler beach. 75 nautical miles east of saint augustine beach. 89 nautical miles east of jacksonville beach. 89 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.

7 Day Forecast for Marine Location Near Marineland, FL
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location: 29.63, -81.21     debug

Area Discussion for - Jacksonville, FL
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Fxus62 kjax 172006
area forecast discussion
national weather service jacksonville fl
406 pm edt Sat aug 17 2019

Near term
Widespread convection, consisting mostly of rain showers,
is moving across northeast florida and southeast georgia, with the
developments over georgia being less widespread and mostly south
of waycross. Temperatures today have been below normal for most of
northeast florida due to overcast cloud cover and abundant
rainfall. Storms and showers are expected to continue throughout
the afternoon and into the evening, with pwat values reaching
above 2.5 inches, as an area of low pressure passes through
towards the east, caught between the stalled frontal boundary to
the north and the subtropical ridge axis to the south. Conditions
will lessen overnight, however flooding will remain a concern for
much of the evening for counties east of i-75 and south of i-10.

Overnight low temperatures tonight will dip into the lower 70s
for most inland areas, with temps along the coastline measuring
slightly higher.

Short term Sunday and Monday
Bound between the weakening frontal boundary over southeast
georgia and the encroaching high pressure ridging extending over
the central florida peninsula from out of the east, the moisture
rich southwesterly flow will continue through Sunday and into
early Monday. However, as Monday progresses, drier air associated
with the approaching high pressure will begin to replace the
excessively moist air, with pwat values in the northernmost and
southernmost portions of the forecast area dropping to 1.5 to 2.0
inches. Regions most likely to see localized heavy rainfall on
Monday will be over inland portions of southeast georgia north of
i-10 and along the georgia coast, and also in parts of florida
south and east of the suwannee river basin, where pwat values can
still reach between 2.1 to 2.4 inches. High temperatures for the
end of the weekend and beginning of next week will be in the upper
80s and lower 90s for inland areas, with coastal locations
affected by the sea breeze being in the mid 80s. Overnight low
temperatures are expected to be in the lower 70s for inland areas
and in the mid 70s along the coast.

Long term Tuesday through Friday
Beginning Tuesday, the prevailing flow will cease to be from out
of the gulf of mexico, to the southwest, and will instead follow
along with the anticyclonic flow of the high pressure ridge
building in over the region from out of the east. Pwat values will
mostly be between 1.7 and 2.0 inches, however pockets of moist
air above 2.0 may also be possible. Otherwise, convection can be
expected to become less localized during this period, with a
return to diurnal convective developments and stronger storms
occuring along sea breeze convergences. MAX temps for next week
will be in the upper 80s and lower 90s, with coastal sites
reaching into the mid 80s. Overnight low temperatures will likely
be in the lower to mid 70s, throughout the week.

Large area of rain will continue to move across area this
afternoon, with areas of MVFR CIGS associated with this.

Occasional gusts to 18-20kts rest of afternoon. High level of
uncertainty on forecast for tonight. In current tafs, just have
sct020, but potential for areas of bkn010-020 to develop with
widely scattered showers.

With the pressure gradient between the subtropical ridge in the
south and the stationary frontal boundary in the north, extending
across the central georgia area, winds for both coastal and
offshore waters have risen to small craft exercise caution (scec)
criteria and may approach small craft advisory (sca) levels over
the offshore waters by Sunday. After Sunday, the frontal system
begins to weaken with a relaxing of the pressure gradient over the

Rip currents: low risk for rip currents today and Sunday.

Preliminary point temps pops
Amg 91 73 88 72 50 40 60 20
ssi 86 75 87 75 70 50 70 30
jax 86 74 89 74 70 40 70 30
sgj 86 73 88 74 60 30 70 30
gnv 81 72 87 72 80 50 70 30
ocf 85 73 87 73 70 40 70 20

Jax watches warnings advisories
Fl... Flood watch until 8 pm edt this evening for central marion-
eastern alachua-gilchrist-suwannee-western alachua-western

Ga... None.

Am... None.

Corless peterson enyedi bricker

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GTXF1 - Guana Tolomato Matanzas Reserve, FL 2 mi60 min SSW 2.9 81°F 1019 hPa81°F
SAUF1 - St. Augustine, FL 16 mi45 min S 8.9 G 11 81°F 81°F1017.1 hPa (+0.0)
41117 26 mi45 min 81°F2 ft

Wind History for I-295 Bridge, St Johns River, FL
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ormond Beach, Ormond Beach Municipal Airport, FL23 mi1.9 hrsSW 610.00 miPartly Cloudy82°F73°F74%1017.6 hPa
Northeast Florida Regional Airport, FL24 mi2.8 hrsSW 910.00 miMostly Cloudy81°F73°F79%1017.2 hPa

Link to 5 minute data for KSGJ

Wind History from SGJ (wind in knots)
Last 24hrSW8
1 day agoS5S5S5SW6S5S5SW5S6SW9S5SW5S6SW7S9SW9SW11SW12

Tide / Current Tables for Bings Landing, Matanzas River, Florida
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Fort Matanzas, Matanzas River, ICWW, Florida
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (19,4,5,8)
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Ground Weather Radar Station Jacksonville, FL
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weather_mapweather_map weather_map

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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 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 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.