Monday, April23, 2018 L-36.com


Marine Weather and Tides
St. Simons, GA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:46AMSunset 8:01PM Monday April 23, 2018 7:08 PM EDT (23:08 UTC) Moonrise 12:45PMMoonset 1:46AM Illumination 62% Phase: Waxing Gibbous; Moon at 9 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
    EDIT      (on/off)   Help
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- 244 Pm Edt Mon Apr 23 2018
.small craft advisory in effect until 10 pm edt this evening...
Tonight..South southwest winds 15 to 20 knots, decreasing to 10 to 15 knots. Seas 5 to 7 feet with occasional seas up to 9 feet, subsiding to 4 to 6 feet with occasional seas up to 8 feet. Dominant period 8 seconds. Inland waters a light chop. Showers likely with a chance of Thunderstorms.
Tuesday..West southwest winds 5 to 10 knots becoming south southeast 10 to 15 knots in the afternoon. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Inland waters a light chop.
Tuesday night..West winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Inland waters a light chop.
Wednesday..West winds 5 to 10 knots becoming south southwest in the afternoon. Seas 2 to 4 feet. Dominant period 9 seconds. Inland waters a light chop.
Wednesday night..West winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a light chop.
Thursday..Southwest winds 5 to 10 knots becoming south southeast in the afternoon. Seas 2 to 4 feet. Inland waters a light chop. A slight chance of showers.
Thursday night..South southwest winds 5 to 10 knots becoming west after midnight. Seas 2 to 3 feet. Inland waters a light chop. A chance of showers.
Friday..West winds around 5 knots becoming south southwest in the afternoon. Seas 2 to 3 feet. Inland waters smooth. A slight chance of showers.
Friday night..South southwest winds 5 to 10 knots becoming west after midnight. Seas 2 to 3 feet. Inland waters a light chop. A slight chance of showers.
Saturday..West northwest winds 5 to 10 knots becoming north northeast in the afternoon. Seas 2 to 3 feet. Inland waters smooth. A slight chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 244 Pm Edt Mon Apr 23 2018
Synopsis.. Low pressure will track to the northwest of area waters through tonight, with a cold front crossing the region late tonight into Tuesday. The low will track up the east coast Tuesday night into Wednesday with troughs pivoting through. A wave will move east across the area Thursday into Friday. High pressure will build from the west over the weekend.

7 Day Forecast for Marine Location Near St. Simons, GA
   Hourly   EDIT   Help
location: 31.13, -81.39     debug


Area Discussion for - Jacksonville, FL
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 kjax 231836
afdjax
area forecast discussion
national weather service jacksonville fl
236 pm edt Mon apr 23 2018

Near term through Tuesday ...

the region will be in the warm sector of a low pressure system that
will be to the northwest tonight. Rounds of showers with embedded
thunderstorms are expected this afternoon and evening, especially
near the coast where additional instability will be supplied by
afternoon cloud breaks. The associated cold front will pass
southeast across forecast area overnight. Limited moisture
associated with front itself, so precipitation chances are
expected to trend downward overnight. The low will track up the
east coast Tuesday, with a broad trough extending south across
region. This trough is not expected to produce rainfall, but will
provide added cloud coverage.

Temperatures are expected to be slightly above normal tonight, then
near to above normal on Tuesday.

Short term Tuesday night through Friday ...

as low pressure system moves up the northeast coast, a series of
troughs pivoting around the low will cross the forecast area through
Thursday. Insufficient moisture present for a rain forecast with
these troughs. Another low is forecast to move eastward along the
northern gulf coast Thursday, and across southeast georgia Thursday
night, with a weak associated cold front crossing region Friday.

Chance for showers with this system and the front, but limited
support for thunder.

Temperatures will trend near to slightly above normal this period.

Long term Friday night through Monday ...

the low will track to the northeast Friday night, with a trailing
trough pivoting south across forecast area into Saturday, with a
chance for a few showers. A broad ridge of high pressure will then
build to the northwest then north Sunday into Monday.

Temperatures will trend near normal this period.

Aviation
Restrictions in showers and storms will continue this afternoon. The
rain will taper off overnight, but stratus will continue
restrictions. Conditions are expected to improveVFR Tuesday
morning.

Marine
Low pressure will track to the northwest of area waters through
tonight, with a cold front crossing the region late tonight into
Tuesday. The low will track up the east coast Tuesday night into
Wednesday with troughs pivoting through. A wave will move east
across the area Thursday into Friday. High pressure will build
from the west over the weekend.

Rip currents: high risk today. Moderate risk Tuesday.

Preliminary point temps pops
Amg 59 77 57 78 30 10 10 0
ssi 64 76 61 76 50 10 0 0
jax 62 81 60 81 50 10 0 0
sgj 65 81 60 79 60 10 0 0
gnv 62 80 58 80 30 10 0 0
ocf 64 80 58 80 40 10 0 0

Jax watches warnings advisories
Fl... High rip current risk until 8 pm edt this evening for coastal
duval-coastal nassau-flagler-st. Johns.

Ga... High rip current risk until 8 pm edt this evening for coastal
camden-coastal glynn.

Am... Small craft advisory until 10 am edt Tuesday 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.

Small craft advisory until 10 pm edt this evening 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.



Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAXG1 - Sapelo Island Reserve, GA 21 mi68 min SSE 7 69°F 1013 hPa (-2.0)69°F
41112 - Offshore Fernandina Beach, FL (132) 30 mi38 min 68°F5 ft
FRDF1 - 8720030 - Fernandina Beach, FL 32 mi50 min SE 8.9 G 14 71°F 67°F1013.8 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 33 mi78 min ESE 9.7 G 9.7 67°F 65°F6 ft1012.8 hPa (-2.4)67°F

Wind History for Fernandina Beach, FL
(wind in knots)    EDIT      (on/off)   Help
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
Last
24hr
E4
G9
E5
G14
E6
G11
E7
G14
E7
G19
E6
G14
E9
G18
E5
G16
E5
G12
E7
G14
SE8
G14
SE6
G11
SE9
G15
S10
G17
SE4
SE6
SE8
G12
S10
G16
S4
G9
S6
S6
G9
E5
G9
SE7
G10
SE9
G16
1 day
ago
E5
G11
E4
G8
E4
G8
E2
G6
SE5
G8
E6
G10
E7
G13
E6
G12
E8
G13
E5
G12
E4
G8
E5
G8
E5
G10
E5
G10
E4
G8
E12
G17
E6
G15
SE10
G16
E5
G10
E5
G11
E7
G13
E4
G11
E7
G13
E6
G12
2 days
ago
N14
G20
N7
G14
N8
G15
N8
G16
NE8
G16
N9
G14
N9
G16
N7
G17
N6
G14
NE8
G14
NE4
G13
NE7
G13
N8
G13
NE8
G17
N13
G20
NE7
G16
NE9
G14
N8
G13
NE6
G10
NE3
G8
E4
G10
NE4
G9
E7
G10
E4
G11

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brunswick, Malcolm McKinnon Airport, GA1 mi75 minSSE 46.00 miLight Rain Fog/Mist69°F68°F96%1013.5 hPa
Brunswick / Glynco, GA10 mi73 minS 510.00 miThunderstorm Light Drizzle70°F64°F83%1013.9 hPa

Wind History from BQK (wind in knots)
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
Last 24hrE11E9E9E12
G17
E10
G17
E14
G22
E16
G24
E15
G22
E14E15
G23
E17
G22
E14E12
G19
CalmS5S6S8S5SE6S12
G15
SE6SE7SE7S4
1 day agoNE9
G14
NE5NE8NE6E9E10E7E8E5E6E3E6CalmE4E8E13
G23
E13
G20
SE14SE15
G20
SE9
G16
E8E12E11E12
G15
2 days agoNE8
G14
NE7N4N5N4NE5NE11NE11NE12
G19
NE12NE9NE9NE9
G14
NE11
G16
NE15
G22
NE15
G22
NE13
G23
NE12
G17
NE9
G18
NE10NE7NE11
G14
NE10E10

Tide / Current Tables for St. Simons Lighthouse, St. Simons Island, Georgia
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
St. Simons Lighthouse
Click for Map
Mon -- 02:46 AM EDT     Moonset
Mon -- 02:58 AM EDT     7.21 feet High Tide
Mon -- 06:48 AM EDT     Sunrise
Mon -- 09:49 AM EDT     0.40 feet Low Tide
Mon -- 01:45 PM EDT     Moonrise
Mon -- 03:42 PM EDT     6.44 feet High Tide
Mon -- 07:59 PM EDT     Sunset
Mon -- 10:10 PM EDT     0.38 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.95.66.87.26.85.74.32.81.50.70.412.33.95.46.36.45.94.73.420.90.40.7

Tide / Current Tables for Mackay River (Daymark #239), Georgia
   EDIT      (on/off)   Help   One Week of Data
Mackay River (Daymark #239)
Click for Map
Mon -- 02:46 AM EDT     Moonset
Mon -- 03:47 AM EDT     7.66 feet High Tide
Mon -- 06:48 AM EDT     Sunrise
Mon -- 10:19 AM EDT     0.44 feet Low Tide
Mon -- 01:45 PM EDT     Moonrise
Mon -- 04:30 PM EDT     6.87 feet High Tide
Mon -- 07:59 PM EDT     Sunset
Mon -- 10:44 PM EDT     0.35 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
34.86.37.47.675.84.22.61.20.50.61.63.14.766.86.864.83.21.70.60.4

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (19,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Jacksonville, FL
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.