Thursday, March21, 2019 L-36.com


Marine Weather and Tides
Montgomery, 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 7:25AMSunset 7:37PM Thursday March 21, 2019 7:31 AM EDT (11:31 UTC) Moonrise 7:32PMMoonset 7:06AM 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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AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 727 Am Edt Thu Mar 21 2019
Today..W winds 5 to 10 kt, becoming sw 10 to 15 kt. Seas 3 to 4 ft.
Tonight..W winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight.
Fri..NW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Seas 3 to 4 ft.
Fri night..NW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft.
Sat..N winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 ft.
Sat night..E winds 5 to 10 kt. Seas 2 ft.
Sun..SE winds 5 to 10 kt. Seas 2 ft.
Sun night..SE winds 5 to 10 kt. Seas 2 ft.
Mon..SW winds 5 to 10 kt. Seas 2 ft. A slight chance of showers.
Mon night..SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers.
AMZ300 727 Am Edt Thu Mar 21 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A cold front will move into the region from the west late today and then offshore tonight. High pressure will then build into the region and persist through the weekend. Low pressure may move through the southeast on Tuesday.


7 Day Forecast for Marine Location Near Montgomery, GA
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location: 31.84, -81.15     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 210908
afdchs
area forecast discussion
national weather service charleston sc
508 am edt Thu mar 21 2019

Synopsis
A cold front will move into the region from the west late today
and then offshore tonight. High pressure will then build into
the region and persist through the weekend. Low pressure may
move through the southeast on Tuesday.

Near term through tonight
Pre-dawn: low clouds have been slow to diminish across sc early
this morning despite wnw boundary layer flow. Latest satellite
imagery shows the drying process of downslope beginning to decay
clouds west of walterboro and hampton but the charleston tri-county
area may have to wait until around sunrise to see some clearing
trends to occur. Skies remain mainly clear in ga and inland areas
to the west of i-95 will see upper 30s.

Today: a complex mid upper level trough will swing through the
southeast states today. All of the significant moisture will head
away from the region to the north as surface low pressure lifts
north along the mid atlantic coast. A dry cold front is expected
to race into the i-95 corridor by late day. This morning we expect
the low clouds across sc to scour out by mid morning with mostly
sunny skies across the region from late morning onward. Southwest
to west winds are expected to increase along and ahead of the
cold front this afternoon with a brief period of 15-25 mph breezes
likely, especially across southeast ga and coastal sc.

Tonight: the cold front is expected to move offshore by early
evening with the atmosphere too dry to expect any brief showers
across northern sc zones. There should be a brief period of mid
clouds then skies will become mostly clear. Low will be in the
40-45 degree range and most all areas are expected to maintain
a light wnw breeze overnight.

Short term Friday through Sunday
Strong continental high pressure centered over the plains states
Friday will move just north of the southeast region Saturday, then
offshore by late Sunday. It will bring our area dry conditions with
mostly clear skies. Temperatures will be within a few degrees of
normal.

Long term Sunday night through Wednesday
High pressure will move offshore Sunday night. A coastal trough is
expected to form Monday while a storm system approaches from the
west. Models show the system moving through Monday night, then
perhaps stalling along or just off our coast through Wednesday while
high pressure prevails inland and to our north. Though, there
remains uncertainty over the timing, strength, and the track of this
system.

Aviation 08z Thursday through Monday
Kchs: considerable moisture will remain trapped in place
through the night, with a sharp inversion to hold until late to
the southwest of low pressure off the upper south carolina and
north carolina coast. This will result in ifr or MVFR ceilings,
before winds shift to offshore and dry things out for Thursday
asVFR returns. Gusty w-sw will prevail through the afternoon as
deep mixing commences.

Ksav:VFR, gusty west winds this afternoon.

Extended aviation:VFR through Sunday. There are low probabilities
of flight restrictions due to an approaching storm system on Monday.

Marine
Lighter offshore flow was tending to diminish sea heights near
shore and we have lowered the SCA in sc waters early this
morning. Offshore flow will back to southwest this afternoon
becoming shifting west in the wake of a cold front late in the
day ga coast and sc coast early this evening. We may need to
issue a SCA later today for jetting and surging offshore flow
in the wake of the cold front tonight over near-shore coastal
waters. Over the 20-60 nm ga waters, SCA conditions will persist
into Friday morning with elevated seas today and then surging
offshore flow tonight.

Extended marine: high pressure will prevail across the region
through the weekend. Low pressure may move through the southeast on
Monday.

Rip currents: we have a moderate risk for rip currents for today
as lingering 2-3 ft swell energy which should slowly subside
with time.

Fire weather
A dry cold front will move into southeast ga this afternoon. Winds
are expected to become gusty with 20-23 kt gusts forecast for at
least 2-3 hours. In addition, rh values will fall to near critical
values. Fuels in this region are the lowest in our forecast area,
but values appear marginal. Per collaboration with SPC fire weather,
all of southeast ga in an elevated potential for fire danger this
afternoon. We have issued a fire danger statement for this region
for anticipated afternoon conditions.

Friday: rh values as low as 25-30 percent and elevated offshore
winds could also cause fire concerns, especially if partners
report low fuel moisture.

Tides coastal flooding
We have issued a coastal flood advisory for the sc ga coast for
the mid morning high tide cycle. The shallow coastal flooding is
expected to be fairly minor with levels near advisory criteria
due to lingering onshore swell energy which will continue to
diminish throughout the day.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Small craft advisory until noon edt Friday for amz374.

Near term...

short term...

long term...

aviation...

marine...

fire weather...

tides coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 19 mi37 min NNW 5.1 G 6 47°F 60°F1016 hPa
SAXG1 - Sapelo Island Reserve, GA 30 mi91 min ENE 1.9 44°F 1015 hPa (-2.0)43°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 34 mi41 min WSW 5.8 G 7.8 56°F 61°F5 ft1015.4 hPa (-0.9)50°F

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hunter U. S. Army Airfield, GA13 mi95 minN 03.00 miFog/Mist42°F39°F90%1015.2 hPa
Savannah-Hilton Head International Airport, GA21 mi38 minN 010.00 miShallow Fog41°F39°F93%1015.9 hPa
Wright Army Airfield (Fort Stewart)/Midcoast Regional Airport, GA22 mi35 minN 010.00 miFair38°F36°F95%1015.5 hPa

Wind History from SVN (wind in knots)
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Last 24hrN3N4N5N7N3NW5NE9N7
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NE10N8N7CalmNE5NE4CalmN5N3N3W3W3W5CalmCalm
1 day agoNE7NE9NE10
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NE7NE12NE7NE8NE5N6N5NE5CalmN3NE3CalmCalmN3N3CalmCalm
2 days agoW3NW3CalmN7NW8N7W6W7SW9NW10SE4SE5S5CalmCalmCalmN5N9NE9NE10NE11NE9NE9NE9

Tide / Current Tables for Florida Passage, Ogeechee River, Georgia
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Florida Passage
Click for Map
Thu -- 03:55 AM EDT     -1.48 feet Low Tide
Thu -- 07:27 AM EDT     Sunrise
Thu -- 08:05 AM EDT     Moonset
Thu -- 09:41 AM EDT     8.85 feet High Tide
Thu -- 04:17 PM EDT     -1.24 feet Low Tide
Thu -- 07:36 PM EDT     Sunset
Thu -- 08:31 PM EDT     Moonrise
Thu -- 10:09 PM EDT     8.88 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.63.31-0.9-1.5-0.51.84.578.58.886.34.21.9-0.1-1.2-0.813.66.28.18.98.5

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
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Thu -- 01:23 AM EDT     -2.72 knots Max Ebb
Thu -- 04:04 AM EDT     0.01 knots Slack
Thu -- 06:44 AM EDT     2.72 knots Max Flood
Thu -- 07:26 AM EDT     Sunrise
Thu -- 08:04 AM EDT     Moonset
Thu -- 10:21 AM EDT     -0.00 knots Slack
Thu -- 01:39 PM EDT     -2.64 knots Max Ebb
Thu -- 04:25 PM EDT     0.01 knots Slack
Thu -- 07:05 PM EDT     2.63 knots Max Flood
Thu -- 07:35 PM EDT     Sunset
Thu -- 08:30 PM EDT     Moonrise
Thu -- 10:46 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-2.3-2.7-2.6-1.7-0.11.52.52.72.31.60.5-0.9-2-2.5-2.6-2-0.70.92.22.62.41.91-0.3

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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Wind Forecast for Charleston, SC (7,2,3,4)
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Ground Weather Radar Station Charleston, SC
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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.