Thursday, December12, 2019
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Marine Weather and Tides
Yulee, 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 7:12AMSunset 5:26PM Thursday December 12, 2019 4:04 AM EST (09:04 UTC) Moonrise 6:03PMMoonset 7:31AM Illumination 100% Phase: Full Moon; Moon at 15 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:201912121530;;225443 Fzus52 Kjax 120721 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 221 Am Est Thu Dec 12 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. Amz450-452-454-121530- 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- 221 Am Est Thu Dec 12 2019
.gale warning in effect until 11 am est this morning...
.small craft advisory in effect from 11 am est this morning through Friday morning...
Today..East northeast winds 20 to 25 knots with frequent gale force gusts to around 35 knots this morning. Seas 7 to 10 feet with occasional seas up to 13 feet. Dominant period 8 seconds. Inland waters rough. Showers likely.
Tonight..East winds 15 to 20 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant period 9 seconds. Inland waters a moderate chop. Showers and a chance of Thunderstorms.
Friday..Southeast winds 10 to 15 knots becoming west southwest 5 to 10 knots in the afternoon. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 9 seconds. Inland waters a light chop. Showers and a slight chance of Thunderstorms.
Friday night..South southwest winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 9 seconds. Inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Saturday..West southwest winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 9 seconds. Inland waters a moderate chop. A chance of showers.
Saturday night..West northwest winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet.
Sunday..Northwest winds 5 to 10 knots becoming east southeast in the afternoon. Seas 2 to 3 feet.
Sunday night and Monday..South southeast winds 5 to 10 knots. Seas 2 to 3 feet.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 221 Am Est Thu Dec 12 2019
Synopsis.. Strong high pressure will build over the mid atlantic and northeast today. A frontal boundary across central florida will lift northward into the waters late today and tonight, and an area of low pressure will develop along the front over the waters late tonight into Friday morning. A weak cold front will move through the waters on Saturday, and high pressure will build over the area on Sunday. High pressure will then shift east of the waters early next week.
Gulf stream.. The approximate location of the west wall of the gulf stream as of dec 12, 2019 at 1200 utc... 64 nautical miles east northeast of flagler beach. 64 nautical miles east northeast of saint augustine beach. 71 nautical miles east of jacksonville beach. 99 nautical miles east of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Yulee, FL
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location: 30.6, -81.52     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 120717 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 217 AM EST Thu Dec 12 2019

NEAR TERM [Through Tonight].

A shortwave was moving across southern Georgia early this morning, and this was responsible for the light radar returns over southeast Georgia and the Suwannee Valley. This feature is forecast to remain rather persistent through the day while slowly dampening, and rainfall amounts up to 1 inch are possible across the Suwannee Valley and along I-10 through Baker County today. A frontal boundary was across central Florida early this morning, and strong high pressure was pushing to the coast of the Mid Atlantic states. A local nor'easter has setup with the tight pressure gradient, resulting in breezy to windy conditions. A Wind Advisory remains in place through the afternoon hours, with the strongest winds this morning. A coastal trough will develop this afternoon, and this will weaken the pressure gradient.

The frontal boundary over central Florida will lift back northward today and tonight, and be located near the FL/GA border by Friday morning. An area of low pressure is forecast to develop along the boundary near the coast of northeast Florida late tonight as well. Rain chances will increase from south to north along the coast, with steady light rain expected across at least the coastal areas this afternoon. Rainfall amounts for the coastal counties are forecast to be around 0.25-0.5" this afternoon. Another shortwave will move across the eastern Gulf late this afternoon and move across northeast Florida overnight as the frontal boundary moves northward towards the FL/GA border. Coastal convergence and the additional lift is forecast to lead to another 0.5-1" along the coast, with locally higher amounts. Across interior southeast Georgia and the Suwannee Valley, isentropic lift will increase along and north of the front, with rainfall amounts of 0.5-1" also possible. A few thunderstorms cannot be ruled out over northeast Florida as well, but most of the storms will remain over the coastal waters.

High temperatures will range from the mid to upper 50s across southeast Georgia to the lower 70s across north central Florida. Lows tonight will be in the upper 40s to low 50s across interior southeast Georgia and the upper 50s to lower 60s elsewhere.

SHORT TERM [Friday Through Saturday].

Showers along with a slight chance for thunderstorms will cross the region on Friday, occurring in conjunction with a short wave trough crossing over southeastern Georgia and northeastern Florida. Rainfall amounts are expected to range between about 0.50 inches for the southernmost Counties and around 1 inch for inland southeast Georgia, along with areas near the Suwannee River basin and along the coastline. Showers will clear out through Saturday morning and then be followed by drier conditions and cooler air. Temperatures for the beginning of the weekend are expected to be near climatological normals, with max temps ranging within the 60s and 70s. Overnight low temperatures from out of the 50s on Friday and reach down into the 40s on Saturday.

LONG TERM [Sunday Through Thursday].

High pressure will continue to build over the region on Sunday and then drift off to the west on Monday. Convection and warming temps are expected on Tuesday as a warm southwesterly flow strengthens in advance of a cold front, which is expected to bring convection over the area into Wednesday, with cold temperatures and clearing skies. Daily high temperatures will rise on Monday and Tuesday in association with the southwesterly flow with temps rising into the mid 70s and then cooling down into the 50s and lower 60s on Wednesday, following the frontal passage. Min temps will similarly peak in the 50s on Tuesday before cooling to potentially freezing temps on Wednesday night.

AVIATION. [Through 06Z Friday]

A frontal boundary will lift northward as a warm front today and tonight, and be located near the FL/GA border by Friday morning. MVFR cigs at KSGJ and KGNV will push northward into the Duval County TAF sites this morning, and then to KSSI in the early afternoon. Ceilings will then continue to lower in the late afternoon and early evening, with IFR cigs prevailing overnight. Rain chances will also increase from south to north along the coast through the period, with rain expected at the coastal TAF sites beginning late this afternoon through the end of the period. An isolated thunderstorm is also possible at the coastal northeast Florida TAF sites, but the probability remains too low to mention at this time. Strong high pressure building over the northeast will lead to northeast winds around 15 knots with gusts around 25 knots through the day, with winds diminishing to around 10 knots tonight.

MARINE.

Gale Warning remains in effect through this morning for the waters out to 20 NM and through this afternoon for the regional waters from 20-60 NM offshore. Winds will diminish late this afternoon as a coastal trough develops. An area of low pressure will develop along the trough over the coastal waters late tonight and then lift northward. Another area of low pressure will develop along the boundary over the Florida Panhandle and move off to the northeast on Saturday, pushing a weak front through the area. Weak high pressure will then build over the waters on Sunday. High pressure will then shift east of the area, and a strong cold front will move through the waters on Wednesday.

Rip Currents and Surf: High risk of rip currents at all the beaches today. Moderate risk of rip currents on Friday. High Surf Advisory at the northeast Florida beaches today due to breakers of 6-8 feet.

Coastal impacts: A Coastal Flood Statement has been issued for the northeast Florida coast due to elevated water levels leading to Action Stage for the High Tide cycle this morning.

HYDROLOGY.

Storm total amounts through Friday of 1-2 inches and locally higher amounts across interior southeast Georgia, the Suwannee Valley and coastal areas. Storm total amounts around 0.5 inches across interior northeast Florida.

PRELIMINARY POINT TEMPS/POPS.

AMG 56 49 62 54 67 / 50 100 80 60 30 SSI 58 56 66 58 68 / 50 100 90 40 40 JAX 64 58 70 58 72 / 60 80 80 50 40 SGJ 68 60 72 59 73 / 70 80 50 40 40 GNV 69 60 72 60 72 / 40 50 60 50 40 OCF 74 60 75 60 75 / 30 40 40 50 40

JAX WATCHES/WARNINGS/ADVISORIES. FL . High Rip Current Risk through this evening for Coastal Duval- Coastal Flagler-Coastal Nassau-Coastal St. Johns.

High Surf Advisory until 10 PM EST this evening for Coastal Duval-Coastal Flagler-Coastal Nassau-Coastal St. Johns.

Wind Advisory until 3 PM EST this afternoon for Coastal Duval- Coastal Flagler-Coastal Nassau-Coastal St. Johns.

GA . High Rip Current Risk through this evening for Coastal Camden- Coastal Glynn.

AM . Small Craft Advisory from 3 PM this afternoon to 3 PM EST Friday for Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM-Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM-Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM.

Gale Warning until 3 PM EST this afternoon for Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM- Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM-Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM.

Small Craft Advisory from 11 AM this morning to 8 AM EST Friday for 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.

Gale Warning until 11 AM EST this morning for 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.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRDF1 - 8720030 - Fernandina Beach, FL 6 mi46 min NNE 9.9 G 18 63°F 62°F1029.3 hPa
41112 - Offshore Fernandina Beach, FL (132) 14 mi34 min 63°F8 ft
BLIF1 14 mi46 min NE 16 G 23 59°F 1029.3 hPa53°F
DMSF1 15 mi46 min 64°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 15 mi46 min NE 23 G 26 60°F 64°F1028.4 hPa
NFDF1 15 mi46 min NE 11 G 15 56°F 1029.4 hPa
LTJF1 16 mi46 min 60°F
41117 48 mi34 min 67°F10 ft
SAUF1 - St. Augustine, FL 53 mi64 min NNE 26 G 29 64°F 65°F1026.6 hPa (-0.9)

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fernandina Beach Municipal Airport, FL3 mi69 minNE 18 G 2710.00 miOvercast and Breezy58°F49°F74%1028.8 hPa
Jacksonville International Airport, FL12 mi68 minNE 19 G 2510.00 miOvercast and Breezy57°F45°F64%1028.2 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL15 mi72 minNE 24 G 2810.00 miOvercast and Windy59°F51°F75%1028.2 hPa
Jacksonville Craig Municipal Airport, FL19 mi71 minNE 14 G 2210.00 miOvercast59°F48°F67%1028.1 hPa

Link to 5 minute data for KNRB

Wind History from NRB (wind in knots)
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1 day ago--S4SW5S4SW4S8S10SW13S14SW13SE9
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2 days agoW3W4W4CalmS5SW6SW12S14SE10
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SE9SE10SE9S11S10S6S5CalmS4SW4S4--------

Tide / Current Tables for Nassauville, Florida
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Nassauville
Click for Map
Thu -- 12:14 AM EST     Full Moon
Thu -- 03:12 AM EST     -0.19 feet Low Tide
Thu -- 07:13 AM EST     Sunrise
Thu -- 07:30 AM EST     Moonset
Thu -- 09:07 AM EST     5.66 feet High Tide
Thu -- 03:54 PM EST     0.10 feet Low Tide
Thu -- 05:25 PM EST     Sunset
Thu -- 06:03 PM EST     Moonrise
Thu -- 09:27 PM EST     4.76 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.31.20.3-0.20.11.32.84.25.25.75.54.83.62.41.20.40.10.71.834.14.74.74.2

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Thu -- 12:14 AM EST     Full Moon
Thu -- 12:15 AM EST     -2.03 knots Max Ebb
Thu -- 04:03 AM EST     0.00 knots Slack
Thu -- 06:56 AM EST     2.59 knots Max Flood
Thu -- 07:12 AM EST     Sunrise
Thu -- 07:29 AM EST     Moonset
Thu -- 10:12 AM EST     -0.00 knots Slack
Thu -- 12:47 PM EST     -2.24 knots Max Ebb
Thu -- 05:04 PM EST     0.00 knots Slack
Thu -- 05:25 PM EST     Sunset
Thu -- 06:03 PM EST     Moonrise
Thu -- 07:22 PM EST     1.66 knots Max Flood
Thu -- 10:17 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-2-1.9-1.5-1-0.11.12.22.62.21.30.3-1-2-2.2-2-1.6-1-0.111.61.510.3-0.7

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 (4,6,7,8)
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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.