Wednesday, October16, 2019 L-36.com


Marine Weather and Tides
Atlantic Beach, 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 7:27AMSunset 6:55PM Wednesday October 16, 2019 6:22 PM EDT (22:22 UTC) Moonrise 7:56PMMoonset 8:50AM Illumination 89% 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:201910170345;;808173 Fzus52 Kjax 161944 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 344 Pm Edt Wed Oct 16 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. Amz450-452-454-170345- 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- 344 Pm Edt Wed Oct 16 2019
.small craft exercise caution...
Tonight..North northwest winds 15 to 20 knots. Seas 2 to 4 feet. Dominant period 9 seconds becoming 4 seconds after midnight. Inland waters a moderate chop. A slight chance of showers.
Thursday..North northwest winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 9 seconds. Inland waters a light chop.
Thursday night..North northwest winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 9 seconds. Inland waters a light chop.
Friday..East northeast winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 9 seconds. Inland waters smooth.
Friday night..East southeast winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 9 seconds becoming 4 seconds after midnight. Inland waters a light chop. A chance of showers.
Saturday..Southeast winds 15 to 20 knots. Seas 2 to 4 feet building to 4 to 6 feet with occasional seas up to 8 feet in the afternoon. Dominant period 5 seconds. Inland waters choppy. A chance of showers and a slight chance of Thunderstorms.
Saturday night..South winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Showers likely and a slight chance of Thunderstorms.
Sunday..Southwest winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Showers likely.
Sunday night..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers.
Monday..South winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 344 Pm Edt Wed Oct 16 2019
Synopsis.. A cold front will move southeast across area waters this afternoon and evening, with high pressure building to the northwest overnight, then to the north Friday. A warm front, extending from a low over the northeastern gulf, will be over region Friday night into Saturday. This low will track northeast near area waters Saturday night into Sunday. Small craft advisory conditions will be possible over the weekend due to this low pressure system. Weak high pressure will build Sunday night into Monday, with a cold front moving southeast across region Tuesday.
Gulf stream.. The approximate location of the west wall of the gulf stream as of oct 10, 2019 at 1200 utc... 59 nautical miles east of flagler beach. 72 nautical miles east of saint augustine beach. 87 nautical miles east of jacksonville beach. 97 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Atlantic Beach, FL
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location: 30.39, -81.4     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 161954
afdjax
area forecast discussion
national weather service jacksonville fl
354 pm edt Wed oct 16 2019

Near term through Thursday ...

cold front will push south of the forecast area late this afternoon,
with a secondary front moving through this evening. Most of the
convective potential will exit south with the main front this
afternoon, but a few showers will be possible along the secondary
front this evening. A few strong storms will be possible south of
i10 this afternoon. Cooler and drier air will advect in from the
northwest tonight as high pressure builds from the west northwest.

Temperatures will fall to more seasonal levels overnight. The cooler
air will likely make it to SE ga beaches on the north northwest
flow, but the orientation of the wind direction may keep readings
milder at NE fl beaches, as a more northerly flow would allow the
air to pass over the relatively warmer atlantic waters. At this
point, expecting the cooler readings to reach nassau and duval
county beaches, but the milder air will likely prevail at st johns
and flagler beach communities.

High pressure will continue to build southeast across the region
Thursday. However, energy begins to track northeast from the gulf
Thursday afternoon, which will move along a stalled frontal boundary
to the south, resulting in an increase in cloud cover over SE ne
florida.

Short term Thursday night through Friday night ...

surface high pressure over the tennessee valley Thursday evening
will move east towards the mid atlantic states during the day
Friday into Friday night. The mid level ridge over missouri
Thursday night will also progress to the appalachians during the
day Friday into Friday evening, ahead of the next shortwave trough
moving in from the western gulf of eastward towards the florida
peninsula. Dry air in place Thursday night should lead to mostly
clear skies during the course of the evening with abundant
sunshine to start the day Friday before clouds begin to approach
the area by mid day as the next surface low pressure system moves
in from the west, increasing moisture levels from west to east. A
chance of rain showers will be possible by late overnight Friday
over the suwannee valley region and interior SE ga with the
approaching surface low.

Light northwest winds overnight Thursday will veer to the north by
Friday morning and then to the NE during the day Friday as
surface high pressure to the northwest progressess eastward to our
north by morning and then NE of the area later in the day,
allowing winds to eventually move onshore from the east by the
afternoon. Lows overnight should be in the upper 40s to low 50s in
interior SE ga, mid 50s for interior NE fl and mid to upper 50s
for the coast. Highs Friday, clouds approaching from the west
should keep high temps in the mid 70s for interior SE ga and ne
fl, with coastal areas rebounding into the upper 70s with
additional sunshine during the day before clouds reach the coast.

With increasing moisture levels and cloud cover, overnight lows
Friday should be warmer, dropping only into the low to mid 60s for
all of SE ga and the mid to upper 60s for all NE fl locations.

Saturday's highs should in the upper 70s for inland SE ga, low 80s
for inland NE fl and near 80 for the coast with southeastly flow.

Long term Saturday through Wednesday ...

Saturday, rain is likely as the surface low moves NE through the
area. Breezy conditions are expected with southeast winds veering
to the south as a warm front over central florida extending from
the the low moves northward and passes through our area overnight
Saturday night into Sunday, lifting northward into the ga and sc
coastline by later in the day Sunday. Monday, the surface low
moves NE towards the outer banks of nc, leaving a trailing
stationary cold front over southern ga and with a chance of
lingering rain showers during the day Monday with light westerly
winds. Rain chances increase Monday evening into Tuesday as the
next strong cold front approaches our area from the northwest
before drier air and cooler conditions move in behind the front.

Fire weather
Rh values could drop to below 30% for interior portions of NE fl
and SE ga during the afternoon hours on Thursday, mainly along
and north of the i-10 corridor. However, northwest winds are
expected to remain light and conditions should not reach red flag
warning criteria. Moisture levels increase by Friday morning, and
rain chances will increase late Friday evening into Saturday with
an approaching surface low to our west.

Marine
A cold front will move southeast across area waters this afternoon
and evening, with high pressure building to the northwest overnight,
then to the north Friday. A warm front, extending from a low over
the northeastern gulf, will be over region Friday night into
Saturday. This low will track northeast across area waters Saturday
night into Sunday. Small craft advisory conditions will be possible
over the weekend due to this low pressure system moving through.

Weak high pressure will build Sunday night into Monday, with a cold
front moving southeast across region Tuesday.

Rip currents: moderate risk continues today, low risk for Thursday.

Preliminary point temps pops
Amg 50 74 49 74 58 20 0 0 0 50
ssi 59 75 58 75 67 20 0 0 0 40
jax 57 78 55 77 64 20 0 0 10 50
sgj 64 77 61 77 67 20 10 0 10 50
gnv 61 81 55 76 63 10 10 0 20 60
ocf 65 81 59 78 65 20 10 0 20 60

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
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 2 mi52 min W 9.9 G 15 84°F 80°F1008.5 hPa
LTJF1 3 mi52 min 84°F
BLIF1 7 mi52 min W 7 G 9.9 85°F 1009.3 hPa72°F
DMSF1 8 mi52 min 80°F
NFDF1 12 mi52 min W 9.9 G 19 83°F 1010 hPa
FRDF1 - 8720030 - Fernandina Beach, FL 20 mi52 min W 7 G 13 87°F 80°F1008.5 hPa
41112 - Offshore Fernandina Beach, FL (132) 23 mi22 min 80°F3 ft
41117 32 mi22 min 80°F2 ft
SAUF1 - St. Augustine, FL 38 mi22 min WSW 7 G 8 84°F 80°F1008.5 hPa (-1.2)
GTXF1 - Guana Tolomato Matanzas Reserve, FL 51 mi97 min W 5.1 83°F 1011 hPa74°F

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mayport Naval Station - Adm David L. McDonald Field, FL1 mi30 minWNW 1010.00 miMostly Cloudy85°F69°F59%1007.8 hPa
Jacksonville Craig Municipal Airport, FL8 mi29 minW 810.00 miFair85°F68°F57%1008 hPa
Fernandina Beach Municipal Airport, FL16 mi47 minW 13 G 1610.00 miFair84°F69°F62%1007.8 hPa
Jacksonville International Airport, FL17 mi86 minW 1010.00 miMostly Cloudy85°F68°F57%1008.4 hPa
Jacksonville Naval Air Station, FL18 mi89 minWNW 1110.00 miMostly Cloudy87°F68°F53%1008.6 hPa

Link to 5 minute data for KNRB

Wind History from NRB (wind in knots)
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Last 24hrE10E9E9SE10SE10S11S11S8SW11SW8S8S10S9SW12SW14SW15
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1 day agoSE7SE7SE5S4SW3CalmSW3S5SW4SW7SW4SW3SW4NE5N6N3CalmCalmNE5NE10NE10NE10E9E12
2 days agoSE8SE10SE8SE8S8S7S5SW5SW4SW5SW4W4W3NW3CalmW6W6W5NW3W5E8SE7SE9SE9

Tide / Current Tables for Mayport Naval Station, Degausing Structure, Florida
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Wed -- 12:23 AM EDT     -0.00 knots Slack
Wed -- 02:58 AM EDT     -1.97 knots Max Ebb
Wed -- 06:43 AM EDT     0.00 knots Slack
Wed -- 07:28 AM EDT     Sunrise
Wed -- 09:32 AM EDT     2.34 knots Max Flood
Wed -- 09:49 AM EDT     Moonset
Wed -- 12:42 PM EDT     -0.00 knots Slack
Wed -- 03:20 PM EDT     -2.25 knots Max Ebb
Wed -- 06:53 PM EDT     Sunset
Wed -- 07:33 PM EDT     0.00 knots Slack
Wed -- 08:55 PM EDT     Moonrise
Wed -- 09:59 PM EDT     1.70 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.4-0.7-1.6-2-1.7-1.3-0.70.31.42.22.31.60.8-0.3-1.5-2.2-2.1-1.7-1.2-0.50.41.31.71.4

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 (18,4,5,8)
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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.