Monday, March18, 2019 L-36.com


Marine Weather and Tides
Henderson, 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 7:30AMSunset 7:36PM Monday March 18, 2019 11:30 AM EDT (15:30 UTC) Moonrise 4:04PMMoonset 4:59AM Illumination 93% Phase: Waxing Gibbous; Moon at 12 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
AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 955 Am Edt Mon Mar 18 2019
.small craft advisory in effect from late tonight through Wednesday afternoon...
Rest of today..N winds 10 to 15 kt, becoming ne 5 to 10 kt this afternoon. Seas 2 to 3 ft.
Tonight..NE winds 10 to 15 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 3 ft, building to 4 to 5 ft after midnight.
Tue..NE winds 20 to 25 kt with gusts to 30 kt. Seas 4 to 6 ft.
Tue night..NE winds 20 kt with gusts to 25 kt. Seas 4 to 6 ft. A slight chance of showers after midnight.
Wed..NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft. A slight chance of showers.
Wed night..N winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. A slight chance of showers.
Thu..NW winds 5 to 10 kt. Seas 3 to 4 ft.
Thu night..W winds 10 to 15 kt. Seas 3 ft.
Fri..N winds 10 to 15 kt. Seas 2 to 3 ft.
Fri night..NE winds 5 to 10 kt. Seas 2 ft.
AMZ300 955 Am Edt Mon Mar 18 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A dry cold front will move through today, followed by high pressure. A trough is forecasted to be offshore late Tuesday into Wednesday, then get pushed offshore by high pressure, which will prevail for the end of the week.


7 Day Forecast for Marine Location Near Henderson, GA
   Hourly   EDIT   Help
location: 32.03, -81.22     debug


Area Discussion for - Charleston, SC
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 kchs 181430
afdchs
area forecast discussion
national weather service charleston sc
1030 am edt Mon mar 18 2019

Synopsis
A dry cold front will move through today, followed by high
pressure. A trough is forecasted to be offshore late Tuesday
into Wednesday, then get pushed offshore by high pressure,
which will prevail for the end of the week.

Near term through tonight
Quiet weather will continue today. A dry cold front will move
into the area later today but ahead of this front, we should
see a nice warm up under mostly clear skies. Highs are expected
to be around 70 in most locations away from the immediate coast.

Main change with the late morning update was to the hourly
temperatures and dew points to reflect latest trends.

Tonight: dry weather on tap as high pressure builds to the north
and tightens the gradient with the baroclinic region to our south.

The increase in low level wind fields and an increasing in coverage
of cirrostratus overnight are expected to preclude frost potential
as low dip to the upper 30s northwest tier. Most areas should spend
the overnight in the 40s with warmer readings along the immediate
coast.

Short term Tuesday through Thursday
The mid-levels Tuesday morning will consist of a trough over the
northeastern states and semi-zonal flow over the southeast. As time
progresses, the trough will trend southward. Meanwhile, a low moving
within the general flow will round the base of the trough by
Thursday, causing it to become amplified along over the east coast.

The result will be lowering heights for us. At the surface, strong
continental high pressure will be inland and to the north Tuesday
and Wednesday. Tuesday night a weak trough will develop just
offshore, then remain in place through Wednesday. Moisture will
start increasing with this trough. However, the bulk should stay
offshore. Though, an isolated light shower is possible along the
immediate coast on Wednesday. QPF should be minimal, if anything.

High pressure will then push the trough away Wednesday night,
becoming more dominant on Thursday. Tuesday highs will struggle to
reach the lower 60s in most locations due to northeasterly winds,
thickness values, and cold 850 mb temperatures. Tuesday night
northerly flow and mostly clear skies will allow lows to fall into
the mid 30s far inland, increasing to the mid 40s at the beaches.

There are no frost concerns due to the wind speeds and dry
conditions. Wednesday highs should moderate by a few degrees as 850
mb temperatures and thickness values increase. Thursday highs will
be near normal.

Long term Thursday night through Sunday
A rather quiet weather pattern is expected. Strong continental high
pressure will prevail across the region through the weekend. Models
then hint at a system approaching from the west late Sunday.

Aviation 14z Monday through Friday
Vfr through 12z Tuesday.

Extended aviation:VFR.

Marine
Today we will see the surface pressure gradient weaken between
high pressure to the NW and lower pressures off to the s-se.

Winds will start the day in the 10-15 kt range from the north
with higher gusts well offshore but then weaken this afternoon
to 10 kt or less with increasing late day variability. Tonight,
high pressure building to the north and the gradient will
tighten significantly overnight with low level geostrophic flow
spiking to 30-35 kt after midnight. The setup favors some local
pinching of the gradient given strong moisture gradients
developing from NW to se. We have issued a small craft advisory
for all atlantic near and offshore waters initiating at midnight
tonight. In the charleston harbor, the n-ne flow will surge to
at least 15 kt late but a SCA there cannot be ruled out late if
the gradients pinch along the sc coast. Seas will build to 4-5
ft overnight with 5-7 ft seas beyond 20 nm off the ga coast.

Extended marine: high pressure will remain inland and to our north
through midweek. Meanwhile, a coastal trough will be in place
Tuesday night into Wednesday. The combination of the steep pressure
gradient between these features and cold air advection will cause
northeast winds to increase and remain gusty into Wednesday. Seas
will respond, with steep wind- driven waves peaking Wednesday
afternoon. Conditions will improve late Wednesday as the gradient
lowers. As a result, small craft advisories will be in effect within
20 nm through Wednesday afternoon, and for the ga waters beyond 20
nm through Wednesday night. High pressure will bring lower winds and
seas Thursday and Friday.

Tides coastal flooding
The combination of the full moon midweek along with moderate to
strong northeast winds Tuesday through Wednesday will result in
elevated tides. Coastal flood advisories for minor or maybe
moderate flooding are likely with each high tide Tuesday,
Wednesday, and maybe Thursday.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Small craft advisory from midnight tonight to 6 pm edt
Wednesday for amz350-352-354.

Small craft advisory from midnight tonight to 6 am edt
Thursday for amz374.

Near term...

short term...

long term...

aviation...

marine...

tides coastal flooding...



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
FPKG1 - 8670870 - Fort Pulaski, GA 17 mi36 min NNE 5.1 G 7 59°F 61°F1023.6 hPa
SAXG1 - Sapelo Island Reserve, GA 42 mi90 min N 8 60°F 1022 hPa (+1.0)43°F
41033 46 mi22 min N 7.8 G 9.7 58°F 60°F1023 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 47 mi40 min N 14 G 16 59°F 62°F3 ft1022.7 hPa (+2.2)44°F

Wind History for Fort Pulaski, GA
(wind in knots)    EDIT      (on/off)   Help
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
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
Last
24hr
NE7
E5
G11
N9
G12
NE11
G15
NE8
NE6
G9
NE4
NE6
NE6
NE4
NE3
N3
NE4
N3
N3
N3
N4
N3
N4
N3
N4
NW6
N6
N5
1 day
ago
N12
G15
N8
G11
N5
G8
NW8
N5
N7
NW6
NW6
N7
N5
NW6
G9
N6
N6
N4
N4
NE6
NE8
G11
NE10
NE12
NE10
NE11
G14
NE8
NE7
G10
2 days
ago
SW10
G16
SW11
G15
S13
G18
S10
G17
SW9
G13
SW10
G13
S8
G12
S9
G16
SW7
G10
SW7
G10
SW9
W5
SW5
G8
SW4
NW12
G16
NW13
NW13
NW11
G14
NW10
NW9
G12
NW11
G14
NW10
NW10
N11
G15

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hunter U. S. Army Airfield, GA4 mi34 minN 710.00 miFair63°F30°F29%1023 hPa
Savannah-Hilton Head International Airport, GA8 mi37 minNNW 610.00 miPartly Cloudy61°F34°F36%1023.5 hPa
Wright Army Airfield (Fort Stewart)/Midcoast Regional Airport, GA21 mi34 minNNW 510.00 miFair62°F32°F32%1023.3 hPa

Wind History from SVN (wind in knots)
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
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
Last 24hrN8N9NE8NE5N3NE3E6NE4NE3CalmCalmCalmCalmW3CalmCalmW3CalmCalmW4W3NW3CalmN7
1 day agoN9NW4NW5NW7N7NW8N5NW8N4N3N6N4N6N4N5NE4NE4N4N5N5N3NE3NE3NE5
2 days agoS11
G15
S12
G18
--S8SE8S10S10S9S9--------------NW7W5NW7NW10NW8N8N10N11

Tide / Current Tables for Highway bridge, Ogeechee River, Georgia
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Highway bridge
Click for Map
Mon -- 04:47 AM EDT     -0.09 feet Low Tide
Mon -- 05:58 AM EDT     Moonset
Mon -- 07:31 AM EDT     Sunrise
Mon -- 09:46 AM EDT     1.18 feet High Tide
Mon -- 05:03 PM EDT     Moonrise
Mon -- 05:24 PM EDT     -0.06 feet Low Tide
Mon -- 07:35 PM EDT     Sunset
Mon -- 10:19 PM EDT     1.11 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
8
pm
9
pm
10
pm
11
pm
0.70.50.30.1-0-0.10.10.50.91.11.21.110.70.50.30.1-0.1-00.20.60.91.11.1

Tide / Current Tables for Savannah River Entrance, Georgia Current
   EDIT      (on/off)   Help   One Week of Data
Savannah River Entrance
Click for Map
Mon -- 01:19 AM EDT     0.00 knots Slack
Mon -- 04:03 AM EDT     2.41 knots Max Flood
Mon -- 05:56 AM EDT     Moonset
Mon -- 07:30 AM EDT     Sunrise
Mon -- 07:50 AM EDT     -0.00 knots Slack
Mon -- 11:17 AM EDT     -2.30 knots Max Ebb
Mon -- 02:03 PM EDT     0.01 knots Slack
Mon -- 04:34 PM EDT     1.96 knots Max Flood
Mon -- 05:02 PM EDT     Moonrise
Mon -- 07:33 PM EDT     Sunset
Mon -- 08:14 PM EDT     -0.00 knots Slack
Mon -- 11:39 PM EDT     -2.26 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
8
pm
9
pm
10
pm
11
pm
-1.5-0.4122.42.21.70.9-0.2-1.3-2-2.3-2.2-1.4-0.11.21.91.91.61.10.3-0.9-1.7-2.2

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (11,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Charleston, SC
   (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.