Sunday, May19, 2019 L-36.com


Marine Weather and Tides
St. Marys, GA

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 6:27AMSunset 8:17PM Sunday May 19, 2019 7:14 AM EDT (11:14 UTC) Moonrise 8:15PMMoonset 6:11AM Illumination 100% Phase: Full Moon; Moon at 15 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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AMZ450 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- 309 Am Edt Sun May 19 2019
Today..Southeast winds 10 to 15 knots, becoming east 15 knots this afternoon. Seas 2 to 3 feet. Dominant period 4 seconds. Inland waters becoming a moderate chop.
Tonight..Southeast winds 15 knots, becoming south southeast 10 knots after midnight. Seas 2 to 4 feet. Dominant period 5 seconds. Inland waters becoming a light chop.
Monday..Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 5 seconds. Inland waters a light chop.
Monday night..South winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 6 seconds. Inland waters a light chop.
Tuesday..South southwest winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Inland waters a light chop.
Tuesday night..South winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop.
Wednesday through Thursday..East southeast winds 10 knots. Seas 2 to 3 feet. Inland waters a light chop.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 309 Am Edt Sun May 19 2019
Synopsis.. The axis of atlantic ridging will remain north of our waters through Monday. This ridging will then weaken Monday night and Tuesday as low pressure develops northeast of the bahamas and moves northeastward towards bermuda. High pressure will then build over the eastern great lakes on Wednesday and will Wedge southward down the u.s. Eastern seaboard Wednesday night and Thursday. This high pressure center will shift directly over our region and will weaken by the end of the week.
Gulf stream.. The approximate location of the west wall of the gulf stream as of may 18, 2019 at 1200 utc... 58 nautical miles east of flagler beach. 66 nautical miles east of saint augustine beach. 76 nautical miles east of jacksonville beach. 83 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near St. Marys, GA
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location: 30.72, -81.55     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 190818
afdjax
area forecast discussion
national weather service jacksonville fl
418 am edt Sun may 19 2019

Dry weather prevails for the foreseeable future...

Heat builds inland this week and expands over the rest of our
area during memorial day weekend...

Currently
Overnight surface analysis depicts high pressure (1020 millibars)
centered near extending its axis westward across our region.

Aloft... A narrow ridge remains in place over the southeastern
states, which is deflecting a pair of potent shortwave troughs
over the plains states and the dakotas northeastward. Meanwhile, a
tropical upper tropospheric trough (tutt) cell is spinning over
the northern bahamas and southeast florida. Latest goes-east
derived total precipitable water vapor (pwat) imagery shows a
pocket of dry air over the u.S. Highway 301 corridor that is
advecting west-northwestward, and this pocket contains pwat values
of only around 0.6 inches. Deepening east-southeasterly winds in
the wake of this dry pocket are advecting a surge of slightly
higher moisture values over the offshore waters, where widely
scattered low-topped showers were development in the convergent
flow. Nighttime infrared imagery indicates that few batches of
mid-level clouds are migrating across inland portions of southeast
georgia, with a few lower level cumulus clouds beginning to
develop over coastal locations. Inland winds have mostly
decoupled, and temperatures are falling through the 60s, with low
and mid 70s at the coast, where a light south-southeast breeze
prevails as of 08z. Dewpoints have not changed appreciably during
the past 24 hours and remain mostly in the 60-65 range.

Near term (today and tonight)
Model soundings indicate that the pocket of dry and subsident air
in place along the u.S. 301 corridor will spread over the rest of
inland southeast georgia and the suwannee valley this afternoon,
which will limit convective development for these locations today.

Deepening southeasterly flow below 600 millibars (15,000 feet) may
advect a few showers into the near shore coastal waters through
early afternoon, and one or two showers may reach the i-95
corridor. However, our region will be in a subsident pattern on
the northeast side of the tutt cell that will be spinning just
north of the northern bahamas, and rain chances will be around 10
percent or less today, except around lake george and the ocala
national forest, where isolated, short-lived convection should
develop this afternoon. Our local pressure gradient will tighten a
little today as bermuda ridging briefly builds westward, and
breezy onshore winds should keep highs in the mid 80s at coastal
locations. A dry and subsident air mass will boost inland highs in
the low and possibly mid 90s this afternoon, as dewpoints fall to
the mid and upper 50s for locations west of u.S. 301.

Narrow ridging aloft will remain in place over our region tonight
as the tutt cell begins to move northeastward and away from the
bahamas. Breezy southeasterly winds will prevail at coastal
locations this evening, and south-southeast low level flow should
keep inland lows mostly in the mid 60s, with lower 70s forecast
for coastal locations. Shower coverage may again increase
overnight for the coastal waters adjacent to northeast florida,
and an isolated coastal shower cannot be ruled out after midnight.

However, rain chances will remain 10 percent or less as an overall
subsident pattern continues.

Short term (Monday through Tuesday night)
Predominantly dry weather is expected for the beginning of next
week with a slight possibility for convection on Monday afternoon
in association with the diurnal sea breeze. As the cold front
passes to the north, high pressure will center in over the region
and lock the southeast us into an extended dry weather pattern.

High temperatures are expected to be in the mid 90s for inland
areas and in the upper 80s for coastal locations. Overnight low
temperatures will range from the mid to upper 60s and even as high
as 70 for some sites.

Long term (Wednesday through Saturday)
High pressure, dry weather, and above average temperatures will
continue on through the coming week and into the weekend. The high
pressure system is set to remain in place over the region ensuring
that convective development during this span will be at a minimum.

Max temps will rise from the mid 90s for inland areas on Wednesday
up into the upper 90s and low 100s by Saturday, with coastal areas
remaining in the 80s. Overnight low temperatures will again range
from the mid to upper 60s and into the low 70s.

Aviation
Periods of MVFR visibilities will be possible at vqq through 12z.

Otherwise,VFR conditions will prevail at the regional terminals.

A few periods of MVFR ceilings accompanied by isolated showers
are possible at sgj after 12z through around 16z. Confidence is
currently too low to include in the overnight tafs. Sustained
southeasterly surface winds will increase to around 10 knots after
13z at the coastal terminals and will shift to easterly at 10-15
knots after 16z. Lighter south-southeasterly surface winds will
develop at the inland terminals after 13z, with winds shifting to
east- southeasterly after 18z and speeds increasing to near 10
knots.

Marine
Atlantic ridging centered near bermuda will extend its axis
north of our local waters through early Monday. Deepening
onshore winds will continue to produce showers over mainly the
offshore waters through the early afternoon hours, and speeds
should remain just below caution levels through this evening.

Seas will build to 3-4 feet tonight offshore as southeasterly
winds surge to around caution levels before decreasing after
midnight. Weak low pressure will then develop to the northeast of
the bahamas by early Monday, with this feature moving
northeastward towards bermuda by late Tuesday. Our local pressure
gradient will loosen by Monday night and Tuesday, with early
afternoon sea breezes developing over the near shore waters
through midweek. Another high pressure center will then take
shape over the eastern great lakes by midweek, and this feature
will wedge down the u.S. Eastern seaboard by Wednesday night and
Thursday. Onshore winds should deepen on Thursday before this high
pressure center becomes centered over our waters towards Friday,
resulting in decreasing winds.

Rip currents: a low-end moderate risk will continue through
Monday at the northeast florida beaches. A fading east-
northeasterly ocean swell and breezy onshore winds will create
this elevated risk during the outgoing tide from the late morning
through mid-afternoon hours. A low risk will continue at the
southeast georgia beaches through at least midweek.

Preliminary point temps pops
Amg 92 66 93 68 10 0 10 0
ssi 84 73 85 73 10 10 0 0
jax 89 69 90 69 10 0 10 0
sgj 86 72 85 70 10 10 0 0
gnv 93 66 92 68 10 10 10 10
ocf 93 67 92 68 10 10 10 10

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

Nelson corless


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRDF1 - 8720030 - Fernandina Beach, FL 5 mi45 min Calm G 1.9 71°F 79°F1018.2 hPa
41112 - Offshore Fernandina Beach, FL (132) 14 mi45 min 78°F2 ft
BLIF1 23 mi45 min NNW 2.9 G 4.1 71°F 1018.4 hPa71°F
DMSF1 23 mi45 min 81°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 23 mi45 min WSW 4.1 G 5.1 72°F 80°F1017.6 hPa
LTJF1 24 mi45 min 71°F
SAXG1 - Sapelo Island Reserve, GA 50 mi75 min Calm 68°F 1017 hPa (+0.0)66°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 59 mi85 min S 5.8 G 7.8 76°F 76°F2 ft1017.4 hPa (+0.6)71°F

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fernandina Beach Municipal Airport, FL9 mi40 minN 010.00 miFair66°F63°F93%1017.6 hPa
Jacksonville International Airport, FL17 mi79 minN 010.00 miA Few Clouds62°F60°F93%1017.2 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL24 mi23 minW 310.00 miFair71°F66°F84%1017.4 hPa

Wind History from FHB (wind in knots)
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Last 24hrS6SW7SW8SW9SW7S5SE11SE13SE14SE12SE15SE13SE13SE13SE10SE8SE8SE11S8SE9S8W4CalmNW3
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Tide / Current Tables for St. Marys, St. Marys River, Florida
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St. Marys
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Sun -- 04:28 AM EDT     -0.18 feet Low Tide
Sun -- 06:29 AM EDT     Sunrise
Sun -- 07:11 AM EDT     Moonset
Sun -- 10:36 AM EDT     6.54 feet High Tide
Sun -- 04:29 PM EDT     -0.16 feet Low Tide
Sun -- 08:16 PM EDT     Sunset
Sun -- 09:14 PM EDT     Moonrise
Sun -- 11:08 PM EDT     7.59 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.54.82.91-0.1-012.54.25.66.46.55.74.32.61-0-012.64.45.97.17.6

Tide / Current Tables for St. Johns River Entrance, Florida Current (3)
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St. Johns River Entrance
Click for Map
Sun -- 02:49 AM EDT     -2.27 knots Max Ebb
Sun -- 06:28 AM EDT     Sunrise
Sun -- 06:35 AM EDT     0.00 knots Slack
Sun -- 07:10 AM EDT     Moonset
Sun -- 08:58 AM EDT     2.31 knots Max Flood
Sun -- 11:53 AM EDT     -0.00 knots Slack
Sun -- 02:39 PM EDT     -2.17 knots Max Ebb
Sun -- 06:28 PM EDT     0.00 knots Slack
Sun -- 08:16 PM EDT     Sunset
Sun -- 09:15 PM EDT     Moonrise
Sun -- 09:19 PM EDT     3.04 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.3-1.5-2.1-2.3-2-1.6-0.80.61.92.321.2-0.2-1.4-2.1-2.1-1.8-1.3-0.50.72.232.92.2

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 (7,2,3,4)
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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.