Sunday, December8, 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 7:08AMSunset 5:27PM Sunday December 8, 2019 1:19 PM EST (18:19 UTC) Moonrise 3:20PMMoonset 3:36AM Illumination 90% Phase: Waxing Gibbous; Moon at 12 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 Coastal Waters From Fernandina Beach To St. Augustine Fl Out 20 Nm- Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 803 Am Est Sun Dec 8 2019
.small craft exercise caution...
Rest of today..Northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 6 seconds. Inland waters a moderate chop. A chance of showers.
Tonight..East winds 10 to 15 knots becoming south 5 to 10 knots after midnight. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Inland waters a light chop.
Monday..South winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Inland waters a light chop.
Monday night..South winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Inland waters a light chop.
Tuesday..South winds 5 to 10 knots. Seas 3 to 4 feet. Dominant period 8 seconds. Inland waters a light chop.
Tuesday night..South winds 10 to 15 knots becoming southwest 5 to 10 knots after midnight. Seas 3 to 5 feet with occasional seas up to 6 feet. A chance of showers and a slight chance of Thunderstorms.
Wednesday..North northwest winds 5 to 10 knots becoming north northeast 15 to 20 knots in the afternoon. Seas 3 to 5 feet with occasional seas up to 6 feet. A chance of showers and a slight chance of Thunderstorms.
Wednesday night..Northeast winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. A chance of showers and a slight chance of Thunderstorms.
Thursday..North northeast winds 20 to 25 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. Showers likely.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 803 Am Est Sun Dec 8 2019
Synopsis.. High pressure will build offshore of new england today as a coastal trough lingers over the southeast atlantic bight. This trough will lift north of the waters late today then high pressure will build across south florida Monday and Tuesday. A cold front pushes south of the waters late Wednesday with elevated rain chances continued into Thursday as an area of low pressure tracks east across the gulf of mexico.
Gulf stream.. The approximate location of the west wall of the gulf stream as of dec 07, 2019 at 1200 utc... 49 nautical miles east of flagler beach. 58 nautical miles east of saint augustine beach. 64 nautical miles east of jacksonville beach. 85 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 081736 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 1236 PM EST Sun Dec 8 2019

AVIATION. [Through 18Z Monday]

As the coastal trof impacts all TAF sites this afternoon except for GNV with a mix of IFR/low MVFR CIGS and a few sprinkles and some brief gusty NE winds at 10-15G20-25 knots which should slowly fade towards evening although the lingering IFR/MVFR CIGS will remain after 00z, then with lighter NE winds and boundary layer cooling overnight expect lower stratus and fog conditions to develop with widespread IFR and LIFR conds at all TAF sites from 06-14z time frame, then slow dissipation of stratus/fog in the 14-15z time frame on Monday as southerly winds slowly increase.

PREV DISCUSSION [822 AM EST].

NEAR TERM [Through Tonight].

A shortwave was moving southward across north central Florida early this morning. The southward progression has ended the lift over the area, putting an end to the sprinkles across northeast Florida. At the surface, an area of low pressure was weakening across northern Gulf, high pressure was wedging southward east of the Appalachians, and an inverted trough was located east of the Bahamas. Some light patchy fog was developing early this morning, but not expecting dense fog due to increasing northeasterly flow. Showers were increasing over the Atlantic coastal waters. Scattered showers will move onshore northeast Florida this morning. Another coastal trough will develop east of the area and lift northward towards the Carolinas this afternoon as strong high pressure over the Mid Atlantic states shifts into the western Atlantic. The pressure gradient will then weaken and rain chances will lessen through the late afternoon and end in the early evening hours. Highs will be in the mid to upper 60s across southeast Georgia, and the low to mid 70s across northeast Florida. Lingering low level moisture and winds becoming light overnight will lead to areas to widespread fog, possibly dense, across the region. Overnight lows will be mild in the 50s.

SHORT TERM [Monday Through Tuesday].

Widespread areas of early morning fog is expected to dissipate by late Monday morning. Predominantly southwesterly flow will be out of the southwest as the frontal boundary moves in towards the region from out of the west-northwest, bringing in increased chances for convection for the beginning of next week. Above average temperatures throughout the region next week, with daily high temperatures reaching up into the upper 70s and lower 80s. Overnight low temperatures for Monday and Tuesday are expected to be in the 50s and 60s.

LONG TERM [Wednesday Through Sunday].

Wet weather is expected to begin midweek as the cold frontal boundary dips down over Georgia, bringing increased chances of showers and storms across the region on into the weekend. Temperatures will drop across the forecast area as the frontal boundary moves in, with high temps dropping into the 50s and 60s for southeast Georgia and in the 60s and 70s for northeast Florida, with the warmest temperatures occurring further to the south. Minimum low temperatures will be in the 30s & 40s for southeast Georgia and in the 40s & 50s for northeast Georgia, with the warmest temperatures occurring ahead of the frontal boundary.

MARINE.

Decent NE flow will continue just north of the coastal trof across the SE GA waters and have extended the Small Craft Advisory until 4 pm this afternoon for 20 knot winds and seas 5-7 ft, elsewhere down into the NE FL coastal waters, NE winds will remain close to 15-20 knots and seas 4-6 ft into this afternoon before a weakening trend in winds and slight subsiding of seas starts this evening.

PRELIMINARY POINT TEMPS/POPS.

AMG 52 78 61 80 56 / 0 0 10 10 30 SSI 57 71 59 75 58 / 10 0 10 10 20 JAX 56 79 57 81 59 / 0 0 0 10 20 SGJ 59 78 59 79 60 / 0 0 0 10 10 GNV 56 80 57 81 60 / 0 0 10 10 20 OCF 57 81 56 82 61 / 0 0 0 10 20

JAX WATCHES/WARNINGS/ADVISORIES. FL . None. GA . None. AM . Small Craft Advisory until 4 PM EST this afternoon for Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAUF1 - St. Augustine, FL 23 mi80 min NE 14 G 15 66°F 67°F1023.2 hPa (-0.4)
DMSF1 28 mi50 min 64°F
NFDF1 28 mi50 min NNE 5.1 G 9.9 59°F 1025.1 hPa
BLIF1 29 mi50 min NNE 11 G 14 62°F 1025 hPa62°F
LTJF1 29 mi50 min 61°F 61°F
41117 31 mi50 min 67°F6 ft
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 31 mi50 min NNE 12 G 15 61°F 64°F1024.1 hPa
GTXF1 - Guana Tolomato Matanzas Reserve, FL 32 mi95 min NNE 5.1 68°F 1025 hPa65°F
FRDF1 - 8720030 - Fernandina Beach, FL 48 mi50 min N 11 G 17 64°F 61°F1024.9 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 mi27 minNE 1310.00 miOvercast64°F57°F81%1023.1 hPa
Northeast Florida Regional Airport, FL18 mi24 minNNE 1010.00 miOvercast68°F64°F87%1022.9 hPa
Cecil Airport, FL20 mi30 minENE 1210.00 miOvercast68°F59°F73%1023.4 hPa
Keystone Airpark, FL23 mi25 minNE 127.00 miMostly Cloudy70°F62°F78%1022.3 hPa

Link to 5 minute data for KNIP

Wind History from NIP (wind in knots)
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Last 24hrNE7NE10NE10NE11NE9NE9N8N7N8N6N6N7N6N6NE8NE10NE11
G16
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1 day agoCalmSE5SE3CalmCalmW3N3SE4SE3CalmNW3NW3NW4NW3W3W3CalmNW3N7N5N5N6NE9NE9
2 days ago3CalmE4E7E4NE4E3CalmCalmCalmCalmW4CalmCalmCalmCalmNW3NW3W4CalmN4N3SE4SE5

Tide / Current Tables for Green Cove Springs, St. Johns River, Florida
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Green Cove Springs
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Sun -- 03:36 AM EST     Moonset
Sun -- 04:26 AM EST     4.19 feet Low Tide
Sun -- 07:10 AM EST     Sunrise
Sun -- 10:22 AM EST     4.98 feet High Tide
Sun -- 03:19 PM EST     Moonrise
Sun -- 04:59 PM EST     4.33 feet Low Tide
Sun -- 05:26 PM EST     Sunset
Sun -- 10:25 PM EST     4.90 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.64.54.44.34.24.24.44.64.84.9554.84.74.64.54.44.34.44.64.84.84.94.9

Tide / Current Tables for Black Creek, S.C.L. RR. bridge, Florida
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Black Creek
Click for Map
Sun -- 03:36 AM EST     Moonset
Sun -- 04:24 AM EST     4.87 feet Low Tide
Sun -- 07:10 AM EST     Sunrise
Sun -- 09:48 AM EST     5.61 feet High Tide
Sun -- 03:19 PM EST     Moonrise
Sun -- 05:03 PM EST     4.90 feet Low Tide
Sun -- 05:27 PM EST     Sunset
Sun -- 09:47 PM EST     5.49 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.25.154.94.94.95.15.35.55.65.65.55.45.25.1554.955.25.45.55.55.4

Weather Map
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wmap_A
GEOS 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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (13,3,4,5)
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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.