Thursday, October17, 2019 L-36.com


Marine Weather and Tides
Jacksonville, 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 7:28AMSunset 6:55PM Thursday October 17, 2019 1:51 PM EDT (17:51 UTC) Moonrise 8:38PMMoonset 9:49AM Illumination 83% Phase: Waning Gibbous; Moon at 19 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:201910172245;;847160 Fzus52 Kjax 171441 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 1041 Am Edt Thu Oct 17 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. Amz450-452-454-172245- 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- 1041 Am Edt Thu Oct 17 2019
.gale watch in effect from late Friday night through Saturday evening...
Rest of today..North northwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 7 seconds. Inland waters a light chop.
Tonight..North northwest winds around 5 knots. Seas 1 to 2 feet. Dominant period 9 seconds. Inland waters smooth.
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 20 to 25 knots with gusts to around 40 knots. Seas 3 to 5 feet. Dominant period 3 seconds. Inland waters choppy. Showers and a slight chance of Thunderstorms.
Saturday..South winds 25 to 30 knots with gusts to around 45 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 6 seconds. Inland waters very rough. Showers and a chance of Thunderstorms.
Saturday night..Southwest winds 20 to 25 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. A chance of showers 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. A chance of showers.
Sunday night..West southwest winds 5 to 10 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 and a slight chance of Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 1041 Am Edt Thu Oct 17 2019
Synopsis.. High pressure will build to the northwest and north of the waters through Friday. Developing low pressure over the southwest gulf of mexico will track to the west and north of the waters over the weekend. Gale force winds and elevated seas possible with this 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 17, 2019 at 1200 utc... 56 nautical miles east of flagler beach. 71 nautical miles east of saint augustine beach. 91 nautical miles east southeast of jacksonville beach. 89 nautical miles east of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Jacksonville, FL
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location: 30.28, -81.7     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 171703
afdjax
area forecast discussion
national weather service jacksonville fl
103 pm edt Thu oct 17 2019

Aviation
[through 18z Friday]
vfr conditions forecast to prevail through the period. Light
northwest winds away from the coast will prevail, becoming light
and variable overnight. Winds will become east northeasterly 5-10
knots on Friday. High clouds will stream across the region through
the period.

Prev discussion [1021 am edt]
Near term [through tonight]
Cool high pressure builds to the NW of the area today and
north of the area tonight producing mostly clear skies
light winds and unseasonably cool temps. Highs will be in the
mid upper 70s for most areas except around 80 far south. Lows will range
from the upper 40s across inland SE ga to the upper 50s to near
60 far south and along the coast.

Short term [Friday through Saturday]
The cool and dry conditions will continue into Friday morning
with an increase in mid and high clouds during the day.

Rain chances increase from southwest to northeast Friday
afternoon into Friday night as a developing low pressure
across the SW gulf of mexico rapidly tracks NE towards
the gulf coast. NHC gives this system a 70 percent chance
of developing into a subtropical or tropical system in
the next 48 hours. There are continued discrepancies between
the GFS and ECMWF on the exact track although the trend
will be for some type of a system to pass to the west and
north of the area on Saturday before lifting NE out of
the area Saturday night. Main concern will be for heavy
rain of possibly 1 to 3 inches depending on the exact
track. Temps will average slightly above normal with
warm overnight lows due to cloud cover.

Long term [Sunday through Thursday]
Low pressure will continue to track to the NE away from
the area on Sunday and Monday with weak area of high
pressure building in behind it. Will probably have
somewhat of a lull of precip at that time. A cold front will
traverse the area on Tuesday bringing a chance of showers
and possibly a few storms. High pressure builds in behind
the front bringing cooler and drier conditions for Wednesday
with slightly below normal temps.

Marine
High pressure builds to the northwest and north of the waters
through Friday producing light NW winds today and a light
onshore flow Friday. Low pressure is expected to track to
the west and north of the waters over the weekend producing
numerous showers and isolated storms. Winds increase and
veer to the SE on Saturday and SW on Saturday. SCA conditions
possible Saturday and Saturday night as the low passes to
the west and north of the waters. Weak high pressure builds
in Sunday night into Monday with a decrease in winds and seas.

Fire weather
Cool high pressure will build just north of the area through
Friday producing cooler and drier conditions. Winds will be much
lighter than yesterday. Min rh's will fall to 30 to 35 percent
across most inland areas this afternoon. Low mixing heights and
light winds will result in low dispersions especially along and
south of the i-10 corridor Friday. Rain chances increase over the
weekend as low pressure tracks to the west and north of the area.

Preliminary point temps pops
Amg 50 74 60 77 63 10 20 70 80 50
ssi 62 75 68 79 70 10 20 80 90 50
jax 55 77 65 81 67 10 20 80 90 40
sgj 60 78 68 81 69 10 30 80 90 40
gnv 59 75 65 81 67 10 30 80 80 30
ocf 60 76 67 82 68 20 40 80 70 30

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... Gale watch from late Friday night through Saturday evening 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-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.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NFDF1 9 mi51 min SSW 1 G 5.1 68°F 1015.7 hPa (-0.9)
DMSF1 11 mi51 min 79°F
BLIF1 12 mi51 min WNW 2.9 G 8 69°F 1015.3 hPa (-0.9)51°F
LTJF1 15 mi51 min 67°F 51°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 17 mi51 min WNW 4.1 G 7 67°F 79°F1014.4 hPa (-0.9)
FRDF1 - 8720030 - Fernandina Beach, FL 30 mi51 min WNW 2.9 G 7 72°F 78°F1014.7 hPa (-0.9)
41112 - Offshore Fernandina Beach, FL (132) 37 mi51 min 79°F2 ft
SAUF1 - St. Augustine, FL 37 mi51 min N 8 G 9.9 69°F 79°F1014.4 hPa (-0.5)
41117 38 mi51 min 80°F3 ft
GTXF1 - Guana Tolomato Matanzas Reserve, FL 50 mi126 min NW 2.9 71°F 1016 hPa53°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 Naval Air Station, FL3 mi58 minVar 510.00 miMostly Cloudy69°F46°F45%1014.1 hPa
Jacksonville Craig Municipal Airport, FL10 mi58 minVar 410.00 miFair69°F48°F47%1014.2 hPa
Cecil Airport, FL10 mi61 minN 510.00 miFair73°F46°F38%1014.2 hPa
Jacksonville International Airport, FL15 mi55 minVar 410.00 miMostly Cloudy70°F46°F44%1013.9 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL17 mi59 minNNW 310.00 miMostly Cloudy69°F48°F49%1014.1 hPa

Link to 5 minute data for KNIP

Wind History from NIP (wind in knots)
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2 days agoE4SE5SE3SE6SE8SE10--S7S6S6S6S4W5SW6SW5SW4SW43--CalmCalmCalmSE4E4

Tide / Current Tables for Ortega River entrance, Florida
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Ortega River Entrance
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Thu -- 01:00 AM EDT     6.87 feet High Tide
Thu -- 06:51 AM EDT     5.78 feet Low Tide
Thu -- 07:30 AM EDT     Sunrise
Thu -- 10:48 AM EDT     Moonset
Thu -- 01:33 PM EDT     7.03 feet High Tide
Thu -- 06:53 PM EDT     Sunset
Thu -- 07:45 PM EDT     5.90 feet Low Tide
Thu -- 09:37 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.86.96.86.76.365.85.85.866.26.56.8776.96.76.365.95.95.96.16.3

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
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Thu -- 12:59 AM EDT     -0.00 knots Slack
Thu -- 03:36 AM EDT     -1.94 knots Max Ebb
Thu -- 07:20 AM EDT     0.00 knots Slack
Thu -- 07:28 AM EDT     Sunrise
Thu -- 10:17 AM EDT     2.33 knots Max Flood
Thu -- 10:47 AM EDT     Moonset
Thu -- 01:24 PM EDT     -0.00 knots Slack
Thu -- 04:02 PM EDT     -2.23 knots Max Ebb
Thu -- 06:52 PM EDT     Sunset
Thu -- 08:19 PM EDT     0.00 knots Slack
Thu -- 09:36 PM EDT     Moonrise
Thu -- 10:45 PM EDT     1.60 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.8-0-1-1.8-1.9-1.5-1-0.30.61.72.32.11.40.4-0.7-1.8-2.2-2-1.5-1-0.30.61.41.6

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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Wind Forecast for Jacksonville, FL (13,3,4,5)
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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.