Saturday, January25, 2020
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Marine Weather and Tides
St. Augustine South, FL

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 7:16AMSunset 5:57PM Saturday January 25, 2020 3:23 AM EST (08:23 UTC) Moonrise 7:59AMMoonset 6:46PM Illumination 0% Phase: New Moon; Moon at 0 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:202001251600;;478975 Fzus52 Kjax 250708 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 208 Am Est Sat Jan 25 2020 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. Amz450-452-454-251600- 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- 208 Am Est Sat Jan 25 2020
.small craft exercise caution...
Today..West northwest winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. Inland waters a light chop.
Tonight..Northwest winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 12 seconds. Inland waters a moderate chop.
Sunday..Northwest winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Inland waters a light chop.
Sunday night..West winds 5 to 10 knots. Seas 2 to 4 feet. Dominant period 10 seconds. Inland waters smooth. A chance of showers.
Monday..West winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 10 seconds. Inland waters a light chop. A slight chance of showers.
Monday night..North northwest winds 10 to 15 knots. Seas 2 to 3 feet.
Tuesday..North northeast winds 5 to 10 knots. Seas 2 to 3 feet.
Tuesday night..East northeast winds around 5 knots. Seas 2 to 3 feet.
Wednesday..Northwest 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- 208 Am Est Sat Jan 25 2020
Synopsis.. High pressure will build east across the gulf coast today and tonight. The high will center over the local waters Sunday. An area of low pressure will track across south florida Sunday night and Monday. High pressure will build north of the local waters Tuesday and Wednesday as another area of low pressure forms in the gulf of mexico.
Gulf stream.. The approximate location of the west wall of the gulf stream as of jan 25, 2020 at 1200 utc... 59 nautical miles east of flagler beach. 66 nautical miles east of saint augustine beach. 73 nautical miles east of jacksonville beach. 74 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 South CDP, FL
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location: 29.87, -81.31     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 250716 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 216 AM EST Sat Jan 25 2020

. COOLER AND DRY THIS WEEKEND .

NEAR TERM [Through Tonight].

Cooler and dry today in the wake of an early morning cold frontal passage. Surface high pressure will build across the central Gulf Coast states with a dry WNW flow over the local area and seasonally cool temperatures as high temperatures rise into the 60s under mostly sunny skies. Tonight, low temperatures will fall into the mid to upper 30s inland to the low 40s along the St. Johns River basin and Atlantic coast. Could have some inland patchy frost especially across the Suwannee River Valley where winds will be lightest under the influence of the ridge axis, however, conditions not favorable for widespread frost development with passing high clouds aloft and elevated boundary layer winds as a weak surface trough axis slides offshore of the SE Atlantic Bight.

SHORT TERM [Sunday Through Monday].

Sunday will start off cold and clear, with skies becoming gradually more cloudy as the day progresses. A weak shortwave associated with low pressure moving across the Florida peninsula will bring in light precipitation for most of the forecast area throughout much of the day, with conditions clearing in the evening. Daily max temps are expected to be close to the seasonal average, with temperatures reaching into the mid 60s in the afternoon. Overnight low temperatures in the 40s Sunday night and dropping into the upper 30s in southeast Georgia with the passage of the instability.

LONG TERM [Tuesday Through Saturday].

Dry weather expected for Tuesday as high pressure settles in over the region, however the models are in disagreement as to when the next wave of instability is expected to cross over the southeastern US. GFS indicates convection associated with a trough moving across the forecast area on Wednesday and Thursday, however the ECMWF models indicate much more subdued conditions. Both models do expect a Gulf low to bring in foul weather by the end of the week, but currently disagree on which day that it will actually arrive on. High temperatures for the week are expected to range between the mid 60s and lower 70s, with overnight low temperatures warming from the lower 40s up into the mid to upper 40s by the end of the week.

AVIATION. [Through 06Z Sunday]

Low stratus associated with cold front passage early this morning will bring MVFR to IFR restrictions through 10Z with WSW winds generally 10 kts or less with gusts near 13-18 kts with frontal passage. Prevailing VFR conditions after daybreak with WNW winds 10 kts or less. Winds may back slightly late afternoon into the evening WNW as speeds decrease to less than 5 kts with prevailing VFR conditions tonight.

MARINE.

High pressure will build east across the Gulf Coast today and tonight trailing early morning cold front passage. Elevated combined seas of 6-8 ft will continue Advisory conditions over the outer waters with near shore water combined seas of 4-6 ft continuing Small Craft Exercise Caution conditions. Winds will be WNW near 15-20 kts today.

The high will center over the local waters Sunday with offshore flow and further dampening of wave heights expected fall below Advisory criteria for the outer waters. An area of low pressure will track across south Florida Sunday night and Monday. High pressure will build north of the local waters Tuesday and Wednesday as another area of low pressure forms in the Gulf of Mexico. Headlines are not expected beyond Sunday with a weak pressure pattern in place.

Rip Currents: Moderate rip current risk today and Sunday under offshore flow. Breakers will lower into the 3-5 ft range today along the NE FL coast.

HYDROLOGY.

Minor river flooding continued along portions of the Altamaha River basin.

PRELIMINARY POINT TEMPS/POPS.

AMG 60 37 61 45 63 / 0 0 0 40 20 SSI 61 41 61 47 62 / 0 0 0 30 20 JAX 65 39 65 47 67 / 0 0 0 20 10 SGJ 65 40 63 48 67 / 0 0 0 20 10 GNV 66 37 65 46 68 / 0 0 0 30 20 OCF 67 38 66 47 69 / 0 0 0 30 30

JAX WATCHES/WARNINGS/ADVISORIES. FL . None. GA . None. AM . Small Craft Advisory until 11 PM EST this evening 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.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAUF1 - St. Augustine, FL 3 mi23 min W 6 G 11 60°F 58°F1016.2 hPa (-0.3)
41117 15 mi23 min 60°F4 ft
GTXF1 - Guana Tolomato Matanzas Reserve, FL 15 mi98 min W 5.1 62°F 1018 hPa60°F
LTJF1 36 mi59 min 61°F 58°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 37 mi53 min W 6 G 7 61°F 57°F1015.9 hPa
BLIF1 38 mi59 min W 6 G 9.9 61°F 1016.6 hPa61°F
DMSF1 38 mi53 min 58°F
NFDF1 40 mi53 min W 2.9 G 6 57°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, FL7 mi27 minW 910.00 miPartly Cloudy59°F57°F93%1016.5 hPa

Link to 5 minute data for KSGJ

Wind History from SGJ (wind in knots)
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Last 24hrCalmCalmNE3CalmCalmSE7S7S10SE10SE8SE8SE9SE7SW6CalmS6S6SW5SW7SW7SW7W9W4W9
1 day agoN12N11N10N10N10N10N9N14N12N12N12
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2 days agoNW17
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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
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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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (3,6,7,8)
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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 numerous 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.