Friday, March22, 2019 L-36.com


Marine Weather and Tides
St. Augustine Beach, 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 7:25AMSunset 7:38PM Friday March 22, 2019 8:17 AM EDT (12:17 UTC) Moonrise 8:37PMMoonset 7:45AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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:201903221515;;734594 Fzus52 Kjax 220705 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 305 Am Edt Fri Mar 22 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. Amz450-452-454-221515- 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- 305 Am Edt Fri Mar 22 2019
.small craft exercise caution...
Today..West northwest winds 15 to 20 knots decreasing to 10 to 15 knots this afternoon. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Inland waters a light chop.
Tonight..North northwest winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 10 seconds. Inland waters a moderate chop.
Saturday..Northeast winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 10 seconds. Inland waters a light chop.
Saturday night..East southeast winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 12 seconds. Inland waters a light chop.
Sunday..East southeast winds 5 to 10 knots. Seas 2 to 4 feet. Inland waters a light chop.
Sunday night..South southeast winds 5 to 10 knots. Seas 2 to 3 feet. Inland waters a light chop.
Monday..South winds 5 to 10 knots. Seas 2 feet. Inland waters a light chop. A slight chance of showers.
Monday night..Southwest winds 10 to 15 knots becoming west after midnight. Seas 2 to 3 feet. Inland waters a moderate chop. A chance of showers.
Tuesday..Northwest winds 10 to 15 knots becoming north northeast in the afternoon. 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- 305 Am Edt Fri Mar 22 2019
Synopsis.. Low pressure trof pushes offshore north of the waters today. High pressure will build northwest of the waters over the weekend with diminishing winds and seas. NExt frontal system will push into the region early next week.
Gulf stream.. The approximate location of the west wall of the gulf stream as of mar 21, 2019 at 1200 utc... 59 nautical miles east of flagler beach. 72 nautical miles east of saint augustine beach. 82 nautical miles east of jacksonville beach. 94 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 Beach, FL
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location: 29.87, -81.26     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 220725
afdjax
area forecast discussion
national weather service jacksonville fl
325 am edt Fri mar 22 2019

Near term today-tonight
Today... Another surface trof will push across the SE u.S. Just
north of the region, but will not be as strong as yesterday so
west to northwest surface winds will be sustained in the 10-15 mph
with peak gusts in the 20-25 mph range. Skies will remain sunny
with MAX temps close to climo values in the lower to middle 70s.

Tonight... Trof pushes offshore NE of the region while next high
pressure center builds NW of the region. Cool and dry northwest
steering flow will weaken through the night and with clear skies
expect below normal temps in the 40s area-wide, with some upper
30s possible in normally colder inland locations.

Short term sat-sun
Mid upper level shortwave ridge initially over the ms valley will
shift quickly ewd over the weekend and push offshore by Sun night.

Broad sfc high pressure over the ohio valley will move southeast and
push offshore of the east coast. This will result in fairly
light northeast to east flow on Saturday, then east and southeast
increased winds on Sunday. A continuation of dry conditions
with near seasonal afternoon temps and cooler than normal nighttime
lows for Saturday. Skies to be mostly sunny with just a few high
clouds. Expected southeast flow on Sunday will result in warmer aftn
temps with dew-points responding into the mid 50s along the coastal
areas. Again, mostly sunny with a few cumulus and some high clouds
at times. The next frontal system will move to the tn valley to
southeast tx late Sunday night. Expecting a light southerly flow on
sun night with a gradual increase in low level moisture and possible
few stratus clouds and localized fog late in the night. Low
temperatures will be held in the 50s overnight.

Long term mon-thu
Monday... Southwest low level flow expected ahead of the approaching
cold front with temperatures warming to the upper 70s and possibly
lower 80s. Fairly weak dynamics aloft and deeper moisture north of
the area will result in low pops on Monday with the best chance of
showers or an isolated t-storm over southeast ga as the front nears
the area. Cold front looks to push through our forecast area quickly
Monday night as a sfc wave forms over sc area and pushes southeast
and offshore. Expect a low chance of showers during this time frame.

Tuesday-Tuesday night, a surge of north-northeast winds likely to
develop behind the front ushering cool moist air and chance of
showers due to strong convergence. Highs on Tuesday well into the
70s SRN zones but may be held to upper 60s to lower 70s northern
zones.

Wednesday, a lower chance of showers and mainly along the coastal
areas as drier air may filter in from the north and northeast as low
pressure along the front scoots well offshore over the WRN atlantic.

Temperatures cooler in the 60s to near 70. Breezy-windy northeast
flow expected due to a strong sfc high pressure system located to
our north over mid atlantic area.

Wednesday night into Thursday, sfc high pressure ridge will drift
into the region from the north resulting in weaker pressure gradient
and mostly clear to partly cloudy skies. Slightly warmer Thursday
with highs into the lower and mid 70s, slightly cooler at the coast.

Aviation
Vfr with skc and some w-nw winds pushing back to 10g15 knots after
14z to 15z time frame.

Marine
Small craft advisory conds offshore and scec nearshore with w-nw
winds 15-25 knots early this morning and seas 4-8 ft and will see
slow decrease in winds seas through the day with SCA flags ending
by late this morning. As high pressure builds north of the waters
this weekend winds become northeast Saturday then southeast on
Sunday generally at speeds close to 10-15 knots with seas coming
down to 2-4 ft. Winds become southwest ahead of the next front on
Monday, then out of the northwest-north on Tuesday following the
next frontal system with SCA possible.

Rip currents: despite the offshore flow today, easterly swells
still running close to 2 ft at the local buoys will still support
a moderate risk today, then likely down to a low risk on Saturday.

Fire weather
Critically low rh again today but average wind speeds will likely
stay below 15 mph area-wide so no red flag warnings. Dispersion
values will be a bit elevated in a few areas. Saturday, critically
low rh values again mainly inland areas and winds will likely again
be less than 15 mph. Sunday, min rh values not as low due to
gradual increase in low level moisture.

Preliminary point temps pops
Amg 72 41 73 45 0 0 0 0
ssi 69 50 67 52 0 0 0 0
jax 75 45 72 50 0 0 0 0
sgj 74 49 71 54 0 0 0 0
gnv 75 43 77 49 0 0 0 0
ocf 76 42 77 49 0 0 0 0

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... Small craft advisory until 11 am edt this morning 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.

Hess shashy


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAUF1 - St. Augustine, FL 1 mi17 min W 5.1 G 7 51°F 61°F1017.2 hPa (+1.5)42°F
41117 13 mi17 min 62°F3 ft
GTXF1 - Guana Tolomato Matanzas Reserve, FL 15 mi92 min WSW 2.9 47°F 1017 hPa43°F
RCYF1 16 mi29 min 65°F
LTJF1 37 mi29 min 55°F 41°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 38 mi29 min 53°F 63°F1016.7 hPa
BLIF1 39 mi29 min 53°F 1018 hPa39°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, FL8 mi81 minWSW 610.00 miFair50°F39°F66%1016.4 hPa

Wind History from SGJ (wind in knots)
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Last 24hrW5W5W6--W9W9
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W5W7W7W7NW6--W5W8W6W7W6SW6
1 day agoN14
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N16N15NE13NE12NE10NE9NE6NE6N3CalmCalmCalmW3W6W5W5W6W5
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Tide / Current Tables for St. Augustine Beach, Atlantic Ocean, 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 (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.