Sunday, December15, 2019
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Marine Weather and Tides
Green Cove Springs, FL

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
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 7:13AMSunset 5:29PM Sunday December 15, 2019 6:16 AM EST (11:16 UTC) Moonrise 9:07PMMoonset 10:20AM Illumination 86% Phase: Waning Gibbous; Moon at 18 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:201912151500;;808001 Fzus52 Kjax 150650 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 150 Am Est Sun Dec 15 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. Amz450-452-454-151500- 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- 150 Am Est Sun Dec 15 2019
Today..North northwest winds 5 to 10 knots becoming east northeast in the afternoon. Seas 2 to 4 feet. Dominant period 9 seconds. Inland waters smooth.
Tonight..Southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 9 seconds. Inland waters a moderate chop.
Monday..South southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 9 seconds. Inland waters a moderate chop.
Monday night..South winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 9 seconds. Inland waters a moderate chop.
Tuesday..South southwest winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 9 seconds. Inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Tuesday 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. Showers likely.
Wednesday and Wednesday night..North northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. A chance of showers.
Thursday..Northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 150 Am Est Sun Dec 15 2019
Synopsis.. High pressure will remain in the region through Monday. Cold front will approach from the west on Tuesday and cross the waters Tuesday night. Strong high pressure build north of the waters Wednesday and Thursday.
Gulf stream.. The approximate location of the west wall of the gulf stream as of dec 14, 2019 at 1200 utc... 42 nautical miles east northeast of flagler beach. 41 nautical miles east of saint augustine beach. 50 nautical miles east southeast of jacksonville beach. 74 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 151028 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 528 AM EST Sun Dec 15 2019

AVIATION. [Through 12Z Monday]

A few patches of IFR VSBYS and/or LIFR CIGS in shallow fog this morning from 12-14z at all TAF sites except for SGJ. Otherwise becoming VFR through the day and into the evening hours. Some chance again for late night fog tonight after 06z for inland TAF sites once again and will show a brief trend at VQQ/GNV again.

PREV DISCUSSION [258 AM EST].

NEAR TERM [Through Tonight].

. AREAS OF DENSE FOG INLAND AREAS EARLY THIS MORNING .

Today . Patchy dense fog expected over inland areas around sunrise, with best chances across inland NE FL along the I-75 corridor and the Suwannee River Valley, but still uncertain if it will become widespread and organized enough for a dense fog advisory. Otherwise expect high pressure over the region to provide for Mostly Sunny skies after any inland fog dissipates by the mid morning hours. Light and variable winds become East 5-10 mph during the afternoon hours and this will keep the Atlc Coastal areas cooler with highs in the 60s, while inland areas will range from near 70 across inland SE GA and lower to middle 70s for inland NE FL.

Tonight . High pressure slides east of the region into the Atlc and steering flow becomes southerly and expect overnight lows slightly warmer with 40s over inland SE GA/Suwannee River Valley and 50s elsewhere. Low level moisture available under Mostly Clear skies and light winds for another night of at least patchy dense fog during the overnight hours.

SHORT TERM [Monday Through Tuesday].

Dry weather comes to an end as high pressure moves off and a cold front passes through the region on Tuesday. A round of showers with embedded thunderstorms is expected with this boundary. Continued south-southwesterly flow will advect warm air causing temperatures to rise well above climo. Highs peak in the mid to upper 70s with the potential for our southern counties to be in the low 80s.

LONG TERM [Wednesday Through Saturday].

High pressure builds in behind the frontal passage bringing a drier, colder air mass over the region. Widespread freezing temperatures are possible across inland counties Wednesday night. Below climo temperatures on Wednesday rise to near normal by the end of the week. On Friday, as the high moves off to the northeast, an inverted trough develops along the Atlantic coast bringing the potential for coastal showers. The trough strengthens on Saturday increasing the chance for onshore showers.

MARINE.

High pressure over the waters today will generally lead to light and variable winds 5 to 10 knots with seas 2-5 ft. High pressure moves east of the local waters with winds becoming south to southeast 10-15 knots tonight through Monday Night with seas 3-6 ft. Ahead of the next front on Tuesday, south to southwest winds increase to 15-20 knots with seas 3-6 ft. Cold front crosses the waters Tuesday Night with Northwest winds increasing to 20-25 knots and expecting Small Craft Advisory headlines that will continue into Wednesday and Thursday as Strong High Pressure builds north of the waters and Winds become North to Northeast at 20-25 knots and seas build into the 5 to 9 feet.

PRELIMINARY POINT TEMPS/POPS.

AMG 68 45 76 61 74 / 0 0 0 30 60 SSI 64 54 74 62 74 / 0 0 0 10 60 JAX 69 51 78 61 78 / 0 0 0 10 60 SGJ 68 56 77 62 79 / 0 0 0 10 30 GNV 73 51 78 61 78 / 0 0 0 0 60 OCF 75 52 81 61 80 / 0 0 0 0 30

JAX WATCHES/WARNINGS/ADVISORIES. FL . None. GA . None. AM . None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAUF1 - St. Augustine, FL 23 mi16 min NW 7 G 7 53°F 64°F1019.2 hPa (+1.7)
DMSF1 28 mi46 min 63°F
NFDF1 28 mi46 min W 1.9 G 2.9 46°F 1020.3 hPa
BLIF1 29 mi46 min SW 1.9 G 2.9 52°F 1020.2 hPa52°F
LTJF1 29 mi46 min 51°F
41117 31 mi16 min 67°F3 ft
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 31 mi46 min W 2.9 G 4.1 52°F 64°F1019.3 hPa
GTXF1 - Guana Tolomato Matanzas Reserve, FL 32 mi91 min W 1.9 50°F 1020 hPa49°F
FRDF1 - 8720030 - Fernandina Beach, FL 48 mi46 min Calm G 1.9 54°F 62°F1019.7 hPa

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 mi23 minWNW 310.00 miFair50°F45°F83%1019.1 hPa
Northeast Florida Regional Airport, FL18 mi20 minNW 410.00 miFair47°F46°F97%1019.5 hPa
Cecil Airport, FL20 mi21 minN 06.00 miFog/Mist37°F37°F100%1019.3 hPa
Keystone Airpark, FL23 mi21 minN 00.15 miFog39°F39°F100%1019 hPa

Link to 5 minute data for KNIP

Wind History from NIP (wind in knots)
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Last 24hrCalmW5W9W8NW14W14W14W16W11W14W11W5W4W6W4W4W4W4W3W4W3NW5W3NW3
1 day agoN3NE3W9N5CalmNE4N4N7NW4NW4CalmNE4SE8CalmCalmE4SE3S6S8S12S7SW10SW11NW7
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NE11NE14NE11NE8N9N7N5CalmN5CalmN5N6NW4

Tide / Current Tables for Green Cove Springs, St. Johns River, Florida (6)
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Green Cove Springs
Click for Map
Sun -- 03:21 AM EST     0.74 feet High Tide
Sun -- 07:14 AM EST     Sunrise
Sun -- 09:58 AM EST     -0.06 feet Low Tide
Sun -- 10:19 AM EST     Moonset
Sun -- 03:49 PM EST     0.89 feet High Tide
Sun -- 05:28 PM EST     Sunset
Sun -- 09:06 PM EST     Moonrise
Sun -- 10:52 PM EST     0.02 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.50.60.70.70.60.50.30.1-0-0.100.20.50.70.80.90.80.70.50.30.20.10

Tide / Current Tables for Black Creek, S.C.L. RR. bridge, Florida
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Black Creek
Click for Map
Sun -- 02:08 AM EST     5.55 feet High Tide
Sun -- 07:15 AM EST     Sunrise
Sun -- 08:39 AM EST     4.80 feet Low Tide
Sun -- 10:20 AM EST     Moonset
Sun -- 02:56 PM EST     5.78 feet High Tide
Sun -- 05:28 PM EST     Sunset
Sun -- 09:06 PM EST     Moonrise
Sun -- 10:35 PM EST     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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5.25.55.55.55.45.254.94.84.84.84.95.25.55.75.85.75.65.35.154.94.94.9

Weather Map
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wmap_A
GEOS 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.
Link to Loop

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