Wednesday, January23, 2019 L-36.com


Marine Weather and Tides
St. Augustine, FL

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:19AMSunset 5:55PM Wednesday January 23, 2019 5:27 PM EST (22:27 UTC) Moonrise 8:58PMMoonset 9:22AM Illumination 91% 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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AMZ454 Expires:201901240500;;815085 Fzus52 Kjax 232030 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 330 Pm Est Wed Jan 23 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. Amz450-452-454-240500- 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- 330 Pm Est Wed Jan 23 2019
.small craft advisory in effect through Thursday morning...
Tonight..South winds 20 to 25 knots with gusts to around 35 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 8 seconds. Inland waters choppy. Showers and a slight chance of Thunderstorms after midnight.
Thursday..Southwest winds 20 to 25 knots becoming west 10 to 15 knots in the afternoon. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 9 seconds. Inland waters a moderate chop. Showers and a slight chance of Thunderstorms in the morning.
Thursday night..Northwest winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 9 seconds. Inland waters a moderate chop.
Friday..North northwest winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 9 seconds. Inland waters a moderate chop.
Friday night..North northwest winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a moderate chop.
Saturday..North northwest winds 5 to 10 knots. Seas 2 to 4 feet. Inland waters a light chop.
Saturday night through Sunday night..North northeast winds 5 to 10 knots. Seas 2 to 3 feet. Inland waters mostly smooth. A slight chance of showers.
Monday..Northeast winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a moderate chop. A chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 330 Pm Est Wed Jan 23 2019
Synopsis.. A strong cold front will approach the waters tonight and move across the area Thursday morning. Gales are expected tonight into Thursday morning across the offshore waters. High pressure will then build in through the weekend.


7 Day Forecast for Marine Location Near St. Augustine, FL
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location: 29.88, -81.31     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 232023 cca
afdjax
area forecast discussion... Corrected
national weather service jacksonville fl
323 pm est Wed jan 23 2019

Marginal risk of severe weather mainly across NE fl later tonight
into early Thursday morning...

Near term (through Thursday night)
Upper trough and associated cold front to the west will approach
this evening and move into the area tonight. Widespread rain with
isolated thunderstorms will overspread the area from west to east
after 03z tonight. Right rear quadrant of strong upper jet will
provide strong dynamics tonight with increasing lift and vertical
wind shear. Instability will be limited most spots but both GFS and
nam indicating some surface based capes of 500-800j between 09z-12z
across NE fl mainly along and south of the i-10 corridor across ne
fl which is where SPC has a marginal risk. Given the high
shear... This marginal instability may be enough to produce a few
severe storms capable of damaging winds or isolated tornadoes.

Showers storms associated with the front will quickly exit to the
east Thursday morning. Most rainfall amounts will be near an inch
with slightly higher amounts across the far south. High pressure
will build from the west in the afternoon, with the gradient flow
leading to gusty conditions. Temperatures will likely be warmest
around noon or before, with readings falling in the afternoon due to
cold advection. The high will continue to build to the
west northwest Thursday night into Friday. The resultant northwest
flow will bring cooler air across region, with lows in most
locations falling into the mid upper 30s Thursday night.

Short term Friday-Saturday night ...

a canadian high will build into the deep south through the period
ushering in a much colder and drier air mass the area. Temps held to
well below normal with highs only in the 50s and a light freeze
likely inland. Frost will also be possible inland especially
Saturday night when the cold high will be overhead and winds become
near calm.

Long term Sunday-Wednesday ...

a trough of low pressure is expected to develop over south fl
Saturday night into Sunday, with moisture running north into region.

This trough will linger into Monday, with potential for waves to
move northeast along it through Monday night. Continued differences
between the models with ECMWF keeping most of the pcp well south of
the area while the GFS has a stronger surface low moving across
south fl along with a swath of pcp as far north as across NE fl on
Monday. Due to these continued differences (with the GFS flip
flopping between runs) have not made any major changes to pvs
extended and indicate a chance of showers mainly across the
southeast portion of the area. Weak high pressure moves in across
the area Tuesday before another cold front moves across the area
late Tuesday into early Wednesday. Moisture appears limited with the
front with only low end rain chances expected. Cooler and drier air
moves in Wednesday behind front as a surface builds in from the gulf
coast. Temps below normal but no widespread freezes expected.

Aviation Vfr conditions will prevail through the afternoon hours.

A few showers were moving across the region, but expect mainly dry
conditions to prevail at the TAF sites. Southerly winds 10-15 knots
with higher gusts will continue through the overnight hours ahead of
the cold front. Widespread showers and embedded storms will push
across the region after 06z tonight and continue into Thursday
morning. MVFR CIGS are forecast to prevail overnight, with ifr
conditions possible. Winds will shift to the west behind the front
on Thursday, andVFR CIGS are forecast by the end of the period.

Marine A strong cold front will sweep across the waters Thursday
morning producing strong winds offshore and have upgraded to a gale
warning for the offshore overnite into Thursday morning with a small
craft advisory for the near shore. Widespread rain with isolated
thunderstorms will move across the waters between midnight and mid-
morning Thursday. High pressure will build in behind the front and
be reinforced this weekend.

Rip currents: low risk on Thursday as winds become offshore.

Preliminary point temps pops
Amg 55 60 36 54 100 30 0 0
ssi 59 65 38 54 90 70 0 0
jax 61 69 38 56 90 60 0 0
sgj 63 71 40 57 90 80 0 0
gnv 61 67 38 57 100 50 0 0
ocf 62 68 38 58 90 60 0 0

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... Small craft advisory until 2 am est Thursday 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 from 2 am to 10 am est Thursday 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 until 10 am est Thursday 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.

Pp ak kb


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAUF1 - St. Augustine, FL 3 mi147 min SSE 24 G 26 66°F 61°F1019.2 hPa (-4.7)
RCYF1 14 mi39 min 61°F
41117 15 mi57 min 60°F6 ft
GTXF1 - Guana Tolomato Matanzas Reserve, FL 16 mi102 min SSE 8 71°F 1020 hPa63°F
LTJF1 35 mi39 min 71°F 60°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 36 mi39 min SSE 11 G 18 70°F 60°F1018.4 hPa
BLIF1 37 mi39 min S 11 G 19 72°F 1018.9 hPa62°F
DMSF1 37 mi39 min 60°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Northeast Florida Regional Airport, FL6 mi2.5 hrsSSE 15 G 246.00 miOvercast with Haze71°F59°F66%1019.4 hPa

Wind History from SGJ (wind in knots)
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Last 24hrE9E6E4SE8E12SE14SE11SE8SE6SE4SE4SE4CalmSE5S5S3Calm6S8SE10SE11SE14
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NE15NE11NE13NE11E13E14E13E11E13E12E10E11E13E11E10E7E9--SE11
2 days agoW15W12
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NW10NW6W7W6W5W5--W4W5NW5NW5--CalmNW5N11N10N13N12
G18
N14N15N15

Tide / Current Tables for St. Augustine, city dock, Florida
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St. Augustine
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Wed -- 03:34 AM EST     -1.04 feet Low Tide
Wed -- 07:19 AM EST     Sunrise
Wed -- 09:21 AM EST     Moonset
Wed -- 09:55 AM EST     5.80 feet High Tide
Wed -- 04:19 PM EST     -0.86 feet Low Tide
Wed -- 05:54 PM EST     Sunset
Wed -- 08:58 PM EST     Moonrise
Wed -- 10:23 PM EST     4.91 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.51.1-0.2-0.9-1-0.312.74.35.45.85.342.40.9-0.3-0.8-0.70.11.42.94.14.84.7

Tide / Current Tables for East Tocoi, St. Johns River, Florida (4)
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East Tocoi
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Wed -- 04:00 AM EST     0.95 feet High Tide
Wed -- 07:20 AM EST     Sunrise
Wed -- 09:22 AM EST     Moonset
Wed -- 10:50 AM EST     -0.57 feet Low Tide
Wed -- 04:30 PM EST     1.10 feet High Tide
Wed -- 05:55 PM EST     Sunset
Wed -- 08:59 PM EST     Moonrise
Wed -- 11:34 PM EST     -0.52 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.30.10.50.80.90.90.70.3-0-0.3-0.5-0.6-0.4-00.50.81.11.10.90.60.3-0.1-0.4-0.5

Weather Map and Satellite Images
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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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Wind Forecast for Jacksonville, FL (17,4,5,8)
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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.