Monday, January18, 2021
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Marine Weather and Tides
Neptune Beach, FL

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 7:20AMSunset 5:51PM Monday January 18, 2021 6:46 PM EST (23:46 UTC) Moonrise 11:04AMMoonset 11:17PM Illumination 30% Phase: Waxing Crescent; Moon at 5 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:202101191115;;119166 Fzus52 Kjax 181913 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 213 Pm Est Mon Jan 18 2021 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. Amz450-452-454-191115- 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- 213 Pm Est Mon Jan 18 2021
Tonight..Northwest winds 5 to 10 knots. Seas 1 to 2 feet with a dominant period 9 seconds. Mostly smooth on the intracoastal waters.
Tuesday..North winds 5 to 10 knots becoming northeast 5 knots in the afternoon. Seas 1 to 2 feet with a dominant period 9 seconds. A light chop on the intracoastal waters.
Tuesday night..South winds 5 to 10 knots becoming west after midnight. Seas 1 to 2 feet with a dominant period 9 seconds. Mostly smooth on the intracoastal waters.
Wednesday..Northwest winds 5 to 10 knots. Seas 1 to 2 feet. A light chop on the intracoastal waters.
Wednesday night..Northwest winds 5 to 10 knots. Seas 1 to 2 feet. Mostly smooth on the intracoastal waters.
Thursday..West winds 5 to 10 knots becoming southwest in the afternoon. Seas 1 to 2 feet. A light chop on the intracoastal waters.
Thursday night..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Chance of showers.
Friday..Southwest winds 10 knots. Seas 2 to 3 feet. Chance of showers.
Friday night..West winds 10 knots becoming northwest after midnight. Seas 2 to 3 feet. Chance of showers.
Saturday..North winds 10 to 15 knots. Seas 2 to 3 feet. Slight chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 213 Pm Est Mon Jan 18 2021
Synopsis.. High pressure ridge will be overhead through Tuesday. The high will build more toward the west Tuesday night into Wednesday, as a weak cold front moves southeast across area. The high will build to the south Wednesday night through Friday. A warm frontal system will stretch across the southern us Thursday into Thursday night. A wave of low pressure will move east along the boundary and into the area Friday into Friday evening, with a cold front moving through Friday night. High pressure will build north of the region Saturday, and toward the northeast Sunday.
Gulf stream.. The approximate location of the west wall of the gulf stream as of jan 16, 2021 at 1200 utc... 58 nautical miles east of flagler beach. 63 nautical miles east of saint augustine beach. 71 nautical miles east of jacksonville beach. 92 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Neptune Beach, FL
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location: 30.31, -81.43     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 182311 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 611 PM EST Mon Jan 18 2021

AVIATION. [Through 00Z Wednesday]

Clear skies with light winds will prevail through the period.

PREV DISCUSSION [216 PM EST].

NEAR TERM. /through Tuesday/ .

High pressure will build overhead from the west this afternoon, and remain overhead through Tuesday. With the high overhead, calm to light winds, with clear skies expected. Temperatures will fall to around freezing inland Tonight, with mid to upper 30s at the coast. Widespread frost will be expected across the region, with the exception of coastal communities where potential will be limited. Temperatures will recover to more seasonal levels Tuesday, with highs generally in the middle 60s.

SHORT TERM. /Tuesday night through Friday night/ .

The high pressure ridge will slide back toward the west Tuesday night, as a weak cold front moves southeast across area. Limited moisture associated with this front, so it is expected to pass through dry, although additional cloud cover anticipated. High pressure will build overhead Wednesday afternoon.

The high will sink to the south Wednesday night, as a warm front will extend east across central GA. The high will sink further to the south Thursday, allowing the warm front to move into southern GA. Waves moving along this front could produce showers over SE GA Thursday. The high will move into southern FL Thursday night into Friday. This will allow the frontal zone to sink to near the FL/GA line by Friday morning. The parent low will move east along the boundary during the day Friday, dragging its associated cold front south of the area Friday night. The best chance for showers this period will be during the day Friday into Friday evening as the low passes through. Can not rule out a few thunderstorms over SE GA Friday.

Temperatures will trend a little below normal Tuesday night, then above normal for Wednesday through Friday night. NE FL will have the warmest air in place this period, due to the position of the warm front.

LONG TERM. /Saturday through Monday/ .

The cold front will sink south of forecast area Saturday morning, as high pressure builds to the north northeast. A weak coastal trough is expected to develop Saturday afternoon into Saturday night. This feature could lead to additional coastal clouds, and the potential for a few showers. The high will build more toward the northeast Sunday, then east southeast Monday. With the high to the north and northeast, the flow will become onshore, leading to above normal temperatures at night, and near normal readings during the day through Sunday. With the high to the east southeast Monday, the flow will be more from the southeast to south, which will result in an increase in warm advection and temperatures above normal. A frontal system will approach from the west Monday, which will provide the chance for a few showers for western areas.

Marine.

High pressure ridge will be overhead through Tuesday. The high will build more toward the west Tuesday night into Wednesday, as a weak cold front moves southeast across area. The high will build to the south Wednesday night through Friday. A warm frontal system will stretch across the southern US Thursday into Thursday night. A wave of low pressure will move east along the boundary and into the area Friday into Friday evening, with a cold front moving through Friday night. High pressure will build north of the region Saturday, and toward the northeast Sunday. Rip Currents: SE GA Low Tuesday NE FL Moderate Tuesday

PRELIMINARY POINT TEMPS/POPS.

AMG 32 62 41 63 40 / 0 0 0 0 0 SSI 37 58 45 63 44 / 0 0 0 0 0 JAX 34 64 41 67 42 / 0 0 0 0 0 SGJ 38 61 43 67 45 / 0 0 0 0 0 GNV 32 65 37 68 41 / 0 0 0 0 0 OCF 32 65 38 70 41 / 0 0 0 0 0

JAX WATCHES/WARNINGS/ADVISORIES. FL . Frost Advisory from 2 AM to 9 AM EST Tuesday for Central Marion- Coastal Nassau-Eastern Marion-Inland Flagler-Inland St. Johns-Putnam.

Freeze Warning from 2 AM to 9 AM EST Tuesday for Bradford-Clay- Eastern Alachua-Inland Duval-Inland Nassau-Western Alachua- Western Marion.

GA . None. AM . None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LTJF1 5 mi47 min 58°F 28°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 6 mi47 min 57°F 57°F1022.1 hPa (+2.0)
BLIF1 8 mi47 min 59°F 1022.9 hPa (+1.9)25°F
DMSF1 9 mi47 min 57°F
JXUF1 10 mi47 min 56°F
NFDF1 12 mi47 min 56°F 1021.7 hPa (+1.8)
FRDF1 - 8720030 - Fernandina Beach, FL 25 mi47 min 57°F 55°F1021.8 hPa (+1.9)
41117 28 mi51 min 61°F2 ft
41112 - Offshore Fernandina Beach, FL (132) 29 mi47 min 57°F 57°F1 ft
SAUF1 - St. Augustine, FL 33 mi47 min WNW 2.9 G 4.1 59°F 57°F1022 hPa (+1.7)26°F
GTXF1 - Guana Tolomato Matanzas Reserve, FL 46 mi62 min W 1 59°F 1022 hPa31°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jacksonville Craig Municipal Airport, FL5 mi54 minWNW 410.00 miFair57°F25°F29%1021.7 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL6 mi55 minWNW 410.00 miFair58°F31°F36%1021.5 hPa
Jacksonville Naval Air Station, FL14 mi54 minWNW 610.00 miFair59°F23°F25%1021.4 hPa
Jacksonville International Airport, FL19 mi51 minW 610.00 miA Few Clouds53°F26°F35%1021.6 hPa
Fernandina Beach Municipal Airport, FL21 mi52 minWNW 410.00 miFair54°F26°F35%1021.7 hPa
Northeast Florida Regional Airport, FL24 mi51 minWNW 310.00 miFair58°F28°F32%1022 hPa

Link to 5 minute data for KCRG

Wind History from CRG (wind in knots)
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Last 24hrCalmCalmCalmW8W7W6W5SW4SW4W4SW6W6W6W8NW11NW10NW9N9W10W9W10W7NW7NW4
1 day agoW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW4CalmCalmW6W10W9
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Tide / Current Tables for Pablo Creek, ICWW bridge, St. Johns River, Florida
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Pablo Creek
Click for Map
Mon -- 01:20 AM EST     3.41 feet High Tide
Mon -- 07:17 AM EST     0.21 feet Low Tide
Mon -- 07:22 AM EST     Sunrise
Mon -- 11:03 AM EST     Moonrise
Mon -- 01:42 PM EST     3.56 feet High Tide
Mon -- 05:50 PM EST     Sunset
Mon -- 07:47 PM EST     0.11 feet Low Tide
Mon -- 11:16 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.13.43.32.821.10.50.20.30.81.52.433.53.53.22.41.50.70.20.10.41.11.9

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Mon -- 01:55 AM EST     -0.00 knots Slack
Mon -- 04:35 AM EST     -1.68 knots Max Ebb
Mon -- 07:22 AM EST     Sunrise
Mon -- 08:33 AM EST     0.00 knots Slack
Mon -- 11:03 AM EST     Moonrise
Mon -- 11:06 AM EST     1.71 knots Max Flood
Mon -- 02:14 PM EST     -0.00 knots Slack
Mon -- 05:06 PM EST     -1.81 knots Max Ebb
Mon -- 05:50 PM EST     Sunset
Mon -- 08:59 PM EST     0.00 knots Slack
Mon -- 11:16 PM EST     Moonset
Mon -- 11:32 PM EST     1.85 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.50.9-0.1-1.1-1.6-1.7-1.5-1.2-0.50.41.31.71.51.10.3-0.9-1.6-1.8-1.8-1.5-101.11.8

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
Ground Weather Radar Station




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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 numerous 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.