Monday, August20, 2018 L-36.com


Marine Weather and Tides
Orange Park, FL

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Sunrise 6:55AMSunset 8:03PM Monday August 20, 2018 5:08 AM EDT (09:08 UTC) Moonrise 3:03PMMoonset 12:59AM Illumination 65% Phase: Waxing Gibbous; Moon at 9 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 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- 319 Am Edt Mon Aug 20 2018
Today..Southwest winds 5 to 10 knots becoming south southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Dominant period 5 seconds. Inland waters a light chop. A chance of showers and Thunderstorms in the afternoon.
Tonight..South southwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Inland waters a light chop. A chance of Thunderstorms in the evening. A chance of showers through the night. A slight chance of Thunderstorms after midnight.
Tuesday..South winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Inland waters a light chop. A slight chance of Thunderstorms in the morning. A chance of showers through the day. A chance of Thunderstorms in the afternoon.
Tuesday night..Southwest winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 4 seconds. Inland waters a moderate chop. A chance of showers and Thunderstorms in the evening, then a slight chance of showers and Thunderstorms after midnight.
Wednesday..Southwest winds 5 to 10 knots becoming south 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Inland waters a light chop. A chance of showers and Thunderstorms.
Wednesday night..West southwest winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Thursday and Thursday night..Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Inland waters mostly smooth. A chance of showers and Thunderstorms.
Friday..East southeast winds 5 to 10 knots. Seas 2 to 3 feet. Inland waters a light chop. A chance of showers and Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 319 Am Edt Mon Aug 20 2018
Synopsis.. Atlantic high pressure will remain positioned just south of the northeast florida waters through Tuesday. A cold front will approach the georgia waters from the northwest by late Wednesday, and will then stall near the georgia and florida border late this week while dissipating. High pressure building over the mid- atlantic and new england late this week will Wedge down the u.s. Eastern seaboard, resulting in light onshore winds developing by late Thursday.


7 Day Forecast for Marine Location Near Orange Park, FL
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location: 30.24, -81.68     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 200717
afdjax
area forecast discussion
national weather service jacksonville fl
317 am edt Mon aug 20 2018

Near term Today and tonight... Deep layer ridge will persist to
the south of the area today with a pocket of dry air aloft shifting
north across SE georgia. This dry air will limit convection to
isolated coverage over SE ga this aftenoon evening. Higher moisuture
values with pwats near 2 inches will exist NE fl and result in
scattered storms with the east coast seabreeze reaching locations
near the highway 301 corridor by late afternoon and early evening.

Wet microbursts will be possible mainly near the seabreeze front and
outflow boundaries. Hot and humid conditions will continue with
afternoon heat indices 100-105.

Short term Tue & wed...

increasing rain chances as an early season cold front approaches
from the wnw Tuesday, preceded by a few broken lines of pre-frontal
showers and tstorms that will develop over the local area as waves
of mid level PVA sweep overhead with deepening mid level trough
axis. Both the NAM and GFS advertised a chance of morning showers
and tstorms along a convergent band (likely remnant outflow
boundaries from todays convection) across NE fl, extending offshore
of the local atlantic coast Tue morning. SW steering flow will
increase over the local area through the day ahead the mid level
trough deepens, which will likely pin the east coast sea breeze near
the SE ga atlantic coast, with some inland progression of the east
coast sea breeze across coastal NE fl counties due to lighter
steering flow. The highest rain chances for NE fl will focus near
the st. Johns river basin eastward toward the atlantic coast where
sea breeze and boundary mergers will converge during the late
afternoon and early evening. Rainfall chances will increase across
se ga Tue afternoon through Tue night as a broken line of pre-
frontal showers tstorms presses across eastward. Upper level
dynamical support and mid level lapse rates not overly impressive
with this first mid level short wave trough, thus the usual
diurnally enhanced pulse strong to severe storms capable of gusty
wet downbursts will be possible. A chance of tstorms will continue
tue night as the surface front edges southward across southern ga,
then by Wed the highest rain chances will focus across NE fl as the
surface front stalls across the area. More stable NW flow and drier
air will filter over SE ga Wed afternoon, limiting rainfall and
tstorm development, while more unstable and unsettled SW flow will
persist over NE fl which will support stronger tstorm potential
during the afternoon and early evening. Resultant convection will
press offshore during the early evening hours.

Above normal temperatures expected with highs in the lower 90s with
muggy overnight conditions as lows range in the 70s.

Long term Thu through sun...

surface frontal zone lingers across northern fl Thu as surface high
pressure bridges the boundary building eastward offshore of new
england through sat. Drier and stable NW mid upper level flow favors
lower than normal rain chances across the area for much of thu. Late
thu the lingering surface trough amplifies into an inverted coastal
trough with a broad surface low progged to develop along the
boundary across northern fl. Onshore flow on the northern side of
the boundary will focus elevated rain chances along the SE ga coast
fri into sat, with rainfall translating inland across inland SE ga
during the afternoon, enhanced by dirunal heating. In addition to
the low level forcing on the northern edge of the surface trough,
mid upper level forcing and instability will increase Fri into sat
as an upper trough deepens south over the SE atlantic coast. These
phased ingredients will bring an increased chances for strong to
severe storms over the local area Fri into the weekend. Cool
temperatures aloft (500 mb -7 to -9 deg c) will continue into Sun as
the surface axis retrogrades inland with the surface ridge axis
settles farther southward down the atlantic coast.

Temperatures will trend back toward climo values with highs near 90
and lows remaining in the 70s.

Aviation Vfr conditions will prevail today. Periods of MVFR
visibilities will be possible 08z-12z due to patchy early morning
fog. Scattered thunderstorms will be possible after 17z with the
chance continuing inland at vqq and gnv til around 01z this
evening.

Marine Surface ridge to the south will maintain a south to
southwest flow becoming southeast near the coast during the
afternoon hours. A cold front will approach from the northwest on
Wednesday as it weakens and slows down. The front will stall near
the georgia florida border Thursday and Friday bringing an
increase in showers and thunderstorms over the waters.

Rip currents: low risk.

Fire weather
Light transport winds will create low daytime dispersion today and
tue across the st. Johns river basin.

Preliminary point temps pops
Amg 93 72 92 73 20 10 30 20
ssi 91 75 90 76 20 30 20 10
jax 94 74 93 74 30 30 40 10
sgj 91 73 89 74 30 30 40 10
gnv 93 73 91 74 40 10 50 10
ocf 94 72 91 73 40 20 60 10

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

Zibura enyedi


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DMSF1 12 mi39 min 86°F
BLIF1 13 mi39 min SSW 5.1 G 7 78°F 1018.1 hPa78°F
LTJF1 16 mi39 min 77°F 72°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 17 mi39 min WSW 8 G 9.9 77°F 83°F1017.4 hPa
RCYF1 31 mi39 min 88°F
FRDF1 - 8720030 - Fernandina Beach, FL 32 mi39 min SSW 1.9 G 5.1 80°F 83°F1017.8 hPa
SAUF1 - St. Augustine, FL 34 mi69 min SW 2.9 G 4.1 74°F 79°F1017.6 hPa (-0.3)
41117 36 mi129 min 82°F2 ft
41112 - Offshore Fernandina Beach, FL (132) 38 mi39 min 80°F2 ft
GTXF1 - Guana Tolomato Matanzas Reserve, FL 47 mi84 min SW 1 73°F 1020 hPa72°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, FL0 mi76 minVar 310.00 miMostly Cloudy76°F73°F91%1017 hPa
Jacksonville Craig Municipal Airport, FL11 mi76 minSW 610.00 miFair76°F75°F97%1017.1 hPa
Cecil Airport, FL11 mi74 minN 010.00 miFair73°F71°F94%1017.3 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL17 mi77 minSSW 610.00 miFair76°F73°F91%1017 hPa
Jacksonville International Airport, FL18 mi73 minS 310.00 miMostly Cloudy75°F73°F96%1017 hPa

Wind History from NIP (wind in knots)
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Last 24hrSW4SW3SW4SW4SW53SW5Calm5S8S11SE5S5E8SE9S12S12SW7S6SW4W3SW63SW6
1 day ago4SW7SW5SW7SW4CalmS6SE8SE8SE75S8SE13SE11SE12CalmSE9S8SW3SW4SW5SW5SW5W5
2 days agoCalmNW3W3S6S8S5S8S7S9E15E10W3S4CalmNW3CalmCalmE4E3S3CalmCalmS3S3

Tide / Current Tables for Piney Point, St. Johns River, Florida
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Piney Point
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Mon -- 01:36 AM EDT     5.78 feet Low Tide
Mon -- 01:58 AM EDT     Moonset
Mon -- 06:56 AM EDT     Sunrise
Mon -- 07:19 AM EDT     6.45 feet High Tide
Mon -- 02:00 PM EDT     5.67 feet Low Tide
Mon -- 04:02 PM EDT     Moonrise
Mon -- 08:02 PM EDT     Sunset
Mon -- 08:05 PM EDT     6.48 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.95.85.85.96.26.36.46.46.46.36.15.95.85.75.75.866.26.36.46.56.46.36.1

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
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Mon -- 12:53 AM EDT     0.00 knots Slack
Mon -- 01:57 AM EDT     Moonset
Mon -- 03:14 AM EDT     1.39 knots Max Flood
Mon -- 06:20 AM EDT     -0.00 knots Slack
Mon -- 06:55 AM EDT     Sunrise
Mon -- 09:52 AM EDT     -1.82 knots Max Ebb
Mon -- 12:54 PM EDT     0.00 knots Slack
Mon -- 03:33 PM EDT     1.88 knots Max Flood
Mon -- 04:01 PM EDT     Moonrise
Mon -- 07:06 PM EDT     -0.00 knots Slack
Mon -- 08:01 PM EDT     Sunset
Mon -- 10:51 PM EDT     -1.79 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.90.111.41.31.10.4-0.7-1.5-1.7-1.8-1.6-0.90.11.21.81.91.71.10.1-0.9-1.4-1.7-1.8

Weather Map and Satellite Images
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wmap_A
GOES 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (5,6,7,8)
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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.