Friday, February15, 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 7:04AMSunset 6:15PM Friday February 15, 2019 2:20 PM EST (19:20 UTC) Moonrise 2:05PMMoonset 3:20AM Illumination 85% Phase: Waxing Gibbous; Moon at 11 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:201902152300;;975084 Fzus52 Kjax 151446 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 946 Am Est Fri Feb 15 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. Amz450-452-454-152300- 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- 946 Am Est Fri Feb 15 2019
Rest of today..Southwest winds around 5 knots, becoming southeast 5 to 10 knots this afternoon. Seas 2 to 3 feet. Dominant period 7 seconds. Inland waters mostly smooth.
Tonight and Saturday..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 7 seconds. Inland waters a light chop.
Saturday night..South southwest winds 10 knots. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters a light chop.
Sunday..South winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop.
Sunday night..South southwest winds 15 knots. Seas 2 to 3 feet. Inland waters a moderate chop.
Monday..South winds 10 knots, becoming northeast 10 to 15 knots during the afternoon. Seas 2 to 3 feet. Inland waters a light chop. A chance of showers.
Monday night..East southeast winds 10 knots. Seas 2 to 3 feet. Inland waters a light chop. A slight chance of showers.
Tuesday..Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop. A chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 946 Am Est Fri Feb 15 2019
Synopsis.. Weak high pressure over our region will shift southward this afternoon as low pressure develops over the red river valley of northern texas. This low pressure center will move east northeastward through the lower mississippi valley tonight and across the carolinas on Saturday. A weakening cold front will approach the georgia waters on Saturday afternoon and will stall near the mouth of the savannah river on Saturday night. Another weak low pressure center will then traverse the deep south on Sunday night and Monday, pushing the frontal boundary through the georgia waters on Monday morning before stalling over the northeast florida waters by Monday afternoon. This front will then lift northward through the georgia waters on Monday night as another low pressure center moves northeastward from the western gulf of mexico through the lower mississippi valley.
Gulf stream.. The approximate location of the west wall of the gulf stream as of feb 14, 2019 at 1200 utc... 68 nautical miles east of flagler beach. 77 nautical miles east of saint augustine beach. 90 nautical miles east southeast of jacksonville beach. 100 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 151537
afdjax
area forecast discussion
national weather service jacksonville fl
1037 am est Fri feb 15 2019

Update
Late morning surface analysis depicts weak high pressure (1017
millibars) centered over north central florida. Meanwhile, weak
low pressure was developing over northern texas along a cold front
that is pushing southeastward through the ohio and tennessee
valleys. Aloft... Zonal flow prevails locally as a potent shortwave
trough is progressing eastward across the eastern great lakes,
while another weaker shortwave trough is moving through the
southern plains. Thick cirrostratus cloud cover is moving across
most of southeast georgia and the interstate 10 corridor in
northeast florida and the suwannee valley, while thinner cirrus is
moving across the skies of north central florida. Temperatures
have quickly risen into the mid to upper 60s as of 15z where
cloud cover has been thinner in our southern counties, while
temperatures elsewhere were generally in the upper 50s to lower
60s. The lingering low level dry air mass is resulting in a wide
range of dewpoints across our area, with 30s and 40s prevailing
for most of southeast georgia and the northern suwannee valley,
while values were creeping upwards through the 50s across north
central and portions of coastal northeast florida.

High pressure over our area late this morning will weaken and
shift southward, and a light west southwesterly wind flow should
boost highs into the low and mid 70s for most inland locations
this afternoon. Our local pressure gradient will remain weak
enough to allow the atlantic sea breeze to develop this afternoon
over coastal northeast florida during the early to mid afternoon,
but this boundary should remain pinned along the i-95 corridor
through late afternoon due to the prevailing low level west
southwest flow. Onshore winds this afternoon should keep coastal
highs mostly in the 65-70 range. Weak low pressure will develop
late this afternoon near the red river valley in northern texas,
and this feature will accelerate east-northeastward along the cold
front through the lower mississippi valley overnight and into the
western carolinas by sunrise on Saturday. Low level west southwest
flow will strengthen somewhat overnight, which may advect a low
stratus deck and possibly some fog into western portions of the
suwannee valley and north central florida during the predawn hours
on Saturday. Lows tonight will mostly fall to the 50-55 range,
with some upper 50s possible over inland portions of southeast
georgia as mid-level cloudiness increases overnight ahead of the
approaching cold front. Isolated showers will be possible over
inland portions of southeast georgia ahead of this front during
the mid to late morning hours on Saturday, and low stratus
ceilings could overspread north central and portions of northeast
florida during the morning hours as well.

Aviation
Vfr conditions will prevail through at least 06z. The atlantic sea
breeze will push across sgj towards 19z. Otherwise, periods of
thick cirrostratus will traverse our region through early
Saturday, with some breaks in this cloud cover overnight possibly
resulting in MVFR visibilities after 09z at gnv and vqq.VFR
conditions should otherwise prevail at the regional terminals
through 12z. There is currently a low probability of ifr stratus
ceilings moving northeastward from the gulf of mexico across gnv
towards 12z and possibly across the rest of the northeast florida
terminals during the early to mid morning hours on Saturday. Any
MVFR visibilities should dissipate by 14z Saturday.

Marine
Weak high pressure over our region this morning will shift
southward this afternoon as low pressure develops near the red
river valley of northern texas. Our local pressure gradient will
be weak enough this afternoon for the atlantic sea breeze to
develop and move slowly inland towards the interstate 95 corridor.

Southwesterly winds will strengthen overnight and Saturday as low
pressure traverses the lower mississippi valley and the
carolinas, dragging a cold front towards southeast georgia. Speeds
will likely reach caution levels of 15-20 knots over the offshore
waters on Saturday. This low pressure center will then move
offshore of the outer banks by sunset on Saturday, and the frontal
boundary will stall near the mouth of the savannah river by early
Sunday. Another weak low pressure center will move across the
deep south on Sunday night, which will strengthen south
southwesterly winds back to caution levels offshore and just below
caution levels near shore. This passing low pressure center will
push the frontal boundary through the georgia waters early on
Monday and into the northeast florida waters by Monday afternoon,
resulting in increasing shower chances and a brief period of
northeasterly winds. This front will then lift northward into the
georgia waters on Monday evening as another low pressure center
moves northeastward from the western gulf of mexico into the lower
mississippi valley.

Rip currents: low risk will continue through this weekend as
southwesterly winds prevail.

Preliminary point temps pops
Amg 56 76 59 78 10 20 10 20
ssi 54 70 59 71 0 10 10 10
jax 54 76 61 79 0 10 10 10
sgj 55 74 62 76 0 10 10 10
gnv 53 76 61 80 10 10 10 10
ocf 53 77 61 81 10 10 10 10

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

Nelson 23 kennedy


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAUF1 - St. Augustine, FL 3 mi20 min NE 7 G 8 58°F 60°F1014.9 hPa (-2.8)
RCYF1 14 mi32 min 64°F
41117 15 mi50 min 58°F2 ft
GTXF1 - Guana Tolomato Matanzas Reserve, FL 16 mi95 min NNE 6 63°F 1017 hPa62°F
LTJF1 35 mi32 min 64°F 50°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 36 mi38 min W 1 G 1.9 64°F 60°F1015.1 hPa
BLIF1 37 mi32 min SW 1.9 G 4.1 65°F 1016.1 hPa54°F
DMSF1 37 mi32 min 62°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 mi24 minNNE 610.00 miFair63°F55°F78%1015.1 hPa

Wind History from SGJ (wind in knots)
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Last 24hrN6NE5CalmNE5NE3NE3NE4NW4CalmCalmCalmS5S5CalmW3CalmCalm--S3NW5NW5CalmNE6NE6
1 day agoNW10NW8NW5CalmCalmCalmNW5NW5CalmCalmCalmNW4NW6NW6NW6NW4NW4N5N10N9NE9
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2 days agoS13
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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 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (14,3,4,5)
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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.