Thursday, April18, 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 6:53AMSunset 7:55PM Thursday April 18, 2019 8:46 AM EDT (12:46 UTC) Moonrise 6:16PMMoonset 5:38AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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:201904181530;;096296 Fzus52 Kjax 180721 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 321 Am Edt Thu Apr 18 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. Amz450-452-454-181530- 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- 321 Am Edt Thu Apr 18 2019
.small craft advisory in effect from this evening through Friday morning...
.gale watch in effect from Friday morning through Friday afternoon...
Today..Southeast winds 15 to 20 knots. Seas 2 to 4 feet. Dominant period 6 seconds. Inland waters a light chop.
Tonight..South winds 20 to 25 knots with gusts to around 35 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 6 seconds. Inland waters rough. A chance of showers.
Friday..South southwest winds 25 to 30 knots with gusts to around 40 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 7 seconds. Inland waters rough. A chance of showers and a slight chance of Thunderstorms in the morning, then showers and a chance of Thunderstorms in the afternoon.
Friday night..West southwest winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 8 seconds. Inland waters choppy. A chance of showers and a slight chance of Thunderstorms in the evening, then a slight chance of showers after midnight.
Saturday and Saturday night..West winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters choppy.
Sunday..West southwest winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop.
Sunday night..South southwest winds 5 to 10 knots becoming west after midnight. Seas 2 to 3 feet. Inland waters a light chop.
Monday..North winds around 5 knots becoming east in the afternoon. Seas 2 to 3 feet. Inland waters smooth.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 321 Am Edt Thu Apr 18 2019
Synopsis.. Increasing southerly winds and building seas will begin over the local waters today in advance of an approaching cold front. The cold front will cross the waters Friday afternoon and evening. Strong and possibly severe Thunderstorms expected along this cold front on Friday. High pressure over the gulf of mexico will build across the florida peninsula this weekend with decreasing winds and seas early next week.
Gulf stream.. The approximate location of the west wall of the gulf stream as of apr 18, 2019 at 1200 utc... 62 nautical miles east of flagler beach. 74 nautical miles east of saint augustine beach. 83 nautical miles east of jacksonville beach. 88 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


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 181222
afdjax
area forecast discussion
national weather service jacksonville fl
822 am edt Thu apr 18 2019

Update through this evening ...

the region will be between high pressure to the east and a frontal
system to the west today. As a result, an increasingly moist south
southeasterly flow is expected. A few showers could affect NE fl
this evening, but most of this activity will hold off till the
overnight hours.

A warmer than normal day is expected, with temperatures ranging from
the lower 80s near the coast, to around 90 inland NE fl.

Aviation 12z TAF period ...

prevailingVFR conditions expected this 12z TAF period. A brief
period of MVFR CIGS can not be ruled out though, mainly this
morning, and again tonight. Elevated winds are expected this
period. If winds subside overnight though, llws will be possible.

Preliminary point temps pops
Amg 86 69 76 50 0 0 90 20
ssi 79 71 79 54 10 20 80 30
jax 85 70 82 53 10 20 80 30
sgj 83 71 83 56 10 40 80 30
gnv 90 69 81 53 0 10 80 20
ocf 90 69 82 54 0 10 80 20

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... Small craft advisory from 8 pm this evening to 4 am edt 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 from 4 am Friday to midnight edt Friday night 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 watch from Friday morning through Friday afternoon 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.

Small craft advisory from 8 pm this evening to 8 am edt 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.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAUF1 - St. Augustine, FL 3 mi46 min S 5.1 G 8 70°F 70°F1016.6 hPa (-0.0)65°F
RCYF1 14 mi46 min 75°F
41117 15 mi46 min 72°F3 ft
GTXF1 - Guana Tolomato Matanzas Reserve, FL 16 mi61 min S 1 64°F 1018 hPa64°F
LTJF1 35 mi46 min 69°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 36 mi46 min SSW 1.9 G 2.9 69°F 68°F1016.5 hPa (+0.4)
BLIF1 37 mi46 min S 2.9 G 4.1 69°F 1017.4 hPa (+0.3)69°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 mi50 minS 310.00 miFair68°F64°F87%1016.6 hPa

Wind History from SGJ (wind in knots)
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Last 24hrNE3E5E6E8E10E8E9E8E10E9E9E7E6E3S3SE3CalmCalmSE3S3S3CalmCalmS3
1 day agoN4N7NE10NE8N8N10NE11N12NE12N11N10N8N6N6NW3NW4NW3NW3CalmCalmCalm--CalmCalm
2 days agoNW8NW12W13
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W11NW11NW8W3NW4NW6NW5NW5NW6NW5NW5NW4NW5NW5W3NW4

Tide / Current Tables for State Road 312, Matanzas River, 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 Crescent Beach, Matanzas River, Florida
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map and Satellite Images
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wmap_A
GOES 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (8,2,3,4)
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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.