Saturday, August17, 2019 L-36.com


Marine Weather and Tides
Green Cove Springs, FL

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 6:53AMSunset 8:07PM Saturday August 17, 2019 9:51 AM EDT (13:51 UTC) Moonrise 8:40PMMoonset 7:38AM Illumination 96% 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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AMZ452 Expires:201908172030;;775001 Fzus52 Kjax 171230 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 830 Am 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. Amz450-452-454-172030- 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- 830 Am Edt Sat Aug 17 2019
Rest of today..Southwest winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 6 seconds. Inland waters a moderate chop. Showers likely and a slight chance of Thunderstorms.
Tonight..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 7 seconds. Inland waters a light chop. A chance of showers.
Sunday..South winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 9 seconds. Inland waters a light chop. Showers likely and a chance of Thunderstorms.
Sunday night..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 7 seconds. Inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Monday..South southwest winds 5 to 10 knots becoming south southeast in the afternoon. Seas 2 to 3 feet. Dominant period 7 seconds. Inland waters a light chop. A chance of showers and Thunderstorms.
Monday night..South winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
Tuesday..East southeast winds 5 to 10 knots. Seas 2 feet. Showers likely and a chance of Thunderstorms.
Tuesday night..South southeast winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
Wednesday..Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 830 Am Edt Sat Aug 17 2019
Synopsis.. Broad low pressure across georgia will slowly track northeast away from the local waters this weekend, trailing a weak trough across the local area. High pressure will strengthen over central florida Monday, then build across north florida Tuesday and Wednesday.
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 Green Cove Springs, FL
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location: 29.99, -81.66     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 171203
afdjax
area forecast discussion
national weather service jacksonville fl
803 am edt Sat aug 17 2019

Update Weak upper low over northeast gulf of mexico helping to
trigger large area of rain and t-storms across eastern gulf of
mexico... Extending inland over n-ctrl fl. Will maintain flood
watch interior NE fl where heaviest rain will be. Expecting to
see band of rain continue SW to NE across NE fl through the
morning as radar currently shows, with additional showers and a
few t-storms elsewhere across forecast area during the afternoon.

Latest model guidance suggests a decrease in precipitation
coverage this evening and tonight. Have updated hourly pop weather
grids to reflect this evolution.

Have lowered high temperatures a few degrees interior n-ctrl fl
where rain expected to be most persistent today. Expecting
cloudiness and precipitation to keep high temperatures below
normal today, with near normal temperatures across s-ctrl ga where
much less precip coverage and some partial insolation.

Aviation Extended period of lower conditions across TAF sites
with plume of low cloudiness and rain expected through the day,
diminishing during the late afternoon and evening. SW surface
winds expected... Occasionally gusting to 18-20 kts.

Marine With a tightening pressure gradient between the bermuda
high and the quasi-stationary cold front across the central georgia
area winds over the coastal waters will increase to small craft
exercise caution (scec) criteria and may approach small craft
advisories (sca) over the offshore waters by Sunday. After Sunday
the frontal system begins to weaken with a relaxing of the
pressure gradient over the waters.

Rip currents: low risk for rip currents.

Preliminary point temps pops
Amg 91 73 90 72 50 30 60 30
ssi 86 75 88 75 70 50 70 50
jax 86 75 88 73 70 40 70 50
sgj 86 73 88 73 60 30 70 50
gnv 81 73 88 72 80 50 70 50
ocf 85 73 88 72 70 40 70 40

Jax watches warnings advisories
Fl... Flood watch through this evening for central marion-eastern
alachua-gilchrist-suwannee-western alachua-western marion.

Ga... None.

Am... None.

Wolf nelson


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAUF1 - St. Augustine, FL 23 mi51 min WSW 9.9 G 12 78°F 81°F1017.4 hPa (+1.3)
JXUF1 25 mi51 min 83°F
DMSF1 28 mi51 min 86°F
NFDF1 28 mi51 min WSW 16 G 21 74°F 1018.7 hPa (+1.6)
BLIF1 29 mi51 min SSW 19 G 26 78°F 1017.8 hPa (+1.3)78°F
LTJF1 29 mi51 min 77°F
41117 31 mi51 min 81°F3 ft
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 31 mi51 min SW 15 G 22 78°F 84°F1017 hPa (+1.1)
GTXF1 - Guana Tolomato Matanzas Reserve, FL 32 mi66 min WSW 6 77°F 1019 hPa77°F
FRDF1 - 8720030 - Fernandina Beach, FL 48 mi51 min 82°F 84°F1017.2 hPa (+1.4)

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jacksonville Naval Air Station, FL17 mi2 hrsSSW 13 G 2010.00 miOvercast78°F72°F82%1016.1 hPa
Northeast Florida Regional Airport, FL18 mi1.9 hrsSW 11 G 187.00 miOvercast77°F73°F88%1017.1 hPa
Cecil Airport, FL20 mi2 hrsSSW 1010.00 miOvercast77°F73°F89%1016.3 hPa
Keystone Airpark, FL23 mi96 minSSW 131.25 miFog/Mist70°F69°F100%1017.3 hPa

Link to 5 minute data for KNIP

Wind History from NIP (wind in knots)
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Tide / Current Tables for Green Cove Springs, St. Johns River, Florida (6)
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Green Cove Springs
Click for Map
Sat -- 03:29 AM EDT     0.85 feet High Tide
Sat -- 06:55 AM EDT     Sunrise
Sat -- 08:38 AM EDT     Moonset
Sat -- 10:27 AM EDT     0.13 feet Low Tide
Sat -- 03:44 PM EDT     0.76 feet High Tide
Sat -- 08:05 PM EDT     Sunset
Sat -- 09:39 PM EDT     Moonrise
Sat -- 10:28 PM EDT     0.19 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.60.70.80.80.80.60.50.30.20.10.10.30.50.60.70.80.70.60.50.30.20.20.2

Tide / Current Tables for Black Creek, S.C.L. RR. bridge, Florida
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Black Creek
Click for Map
Sat -- 02:44 AM EDT     5.65 feet High Tide
Sat -- 06:55 AM EDT     Sunrise
Sat -- 08:38 AM EDT     Moonset
Sat -- 09:51 AM EDT     4.87 feet Low Tide
Sat -- 02:49 PM EDT     5.55 feet High Tide
Sat -- 08:06 PM EDT     Sunset
Sat -- 09:40 PM EDT     Moonrise
Sat -- 10:00 PM EDT     4.84 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.45.55.65.65.65.45.25.154.94.955.25.45.55.55.55.35.154.94.94.84.9

Weather Map and Satellite Images
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wmap_A
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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (9,2,3,4)
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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.