Tuesday, March19, 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 7:27AMSunset 7:35PM Tuesday March 19, 2019 7:36 PM EDT (23:36 UTC) Moonrise 5:14PMMoonset 5:44AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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- 534 Pm Edt Tue Mar 19 2019
.small craft advisory in effect through Wednesday afternoon...
Tonight..NE winds 20 to 25 kt. Seas 6 to 8 ft, subsiding to 5 to 7 ft after midnight.
Wed..N winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft, subsiding to 4 to 5 ft in the afternoon.
Wed night..N winds 10 to 15 kt. Seas 3 to 4 ft.
Thu..NW winds 5 to 10 kt. Seas 3 to 4 ft.
Thu night..NW winds 10 to 15 kt. Seas 3 to 4 ft.
Fri..NW winds 10 to 15 kt. Seas 2 to 3 ft.
Fri night..NW winds 10 kt. Seas 2 ft.
Sat..NE winds 5 to 10 kt. Seas 2 ft.
Sat night..SE winds 5 to 10 kt. Seas 2 ft.
Sun..SE winds 5 to 10 kt. Seas 2 ft.
Sun night..SE winds 10 kt. Seas 2 ft.
AMZ300 534 Pm Edt Tue Mar 19 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will remain north of the area through tonight. Low pressure will pass offshore Wednesday and will move away from the area through Thursday. High pressure will then build into the region Friday through Monday. Low pressure could move through the southeast 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 192141
afdchs
area forecast discussion
national weather service charleston sc
541 pm edt Tue mar 19 2019

Synopsis
High pressure will remain north of the area through tonight.

Low pressure will pass offshore Wednesday and will move away
from the area through Thursday. High pressure will then build
into the region Friday through Monday. Low pressure could move
through the southeast Tuesday.

Near term until 6 am Wednesday morning
Based on satellite trends we have increased cloud cover about
20-30% across the area from the previous forecast, in
association with the upper jet. But as the jet pulls away late
this evening and overnight, cloud cover will diminish and skies
will become mostly clear or partly cloudy. Any lower clouds
associated with a developing trough offshore will stay east of
the region through the night. Little to no frost is expected
tonight since it'll be too dry, there is too much mixing and our
latest forecast has nothing colder than 37f far inland. But we
do continue to monitor just in case it gets colder than
anticipated.

Previous discussion...

as of 325 pm: the sfc high pressure will continue across the
forecast area tonight. After midnight, an inverted trough will
deepen off the nc coast. The sfc pattern should continue to
support gusty NE winds along the coast, with steady NE winds
expected across the inland zones. The llvl flow should keep deep
dry air across the forecast area through the overnight hours.

Using a blend of mos, low temperatures are forecast to range
from the upper 30s inland to the mid to upper 40s along the
coast.

Short term 6 am Wednesday morning through Friday
Wednesday and Wednesday night: adjusted forecasts toward the drier
operational 12z GFS and euro scenarios which maintain a less
amplified wave off the southeast coast thus holding precipitation
outside the forecast area. However, Wednesday will still feature
mostly cloudy skies and below-normal MAX temperatures in the upper
50s north to mid upper 60s south, followed by low temps mainly in
the 40s and perhaps locally in the upper 30s well inland.

Thursday and Friday: an amplifying upper trough will push into the
eastern CONUS Thursday. Downslope flow should offset any significant
effects from the associated comma feature wrap around moisture, so
forecasts maintain rain-free conditions and high temps around 70f,
followed by Thursday night lows ranging from the lower 40s inland to
around 50f on the beaches. After the upper trough advances offshore,
building high pressure and downslope flow should push Friday temps
into the lower mid 70s.

Long term Friday night through Tuesday
Strong continental high pressure will prevail across the region
through the weekend. Models then hint at a coastal trough forming
Monday while a system approaches from the west. But there is a lot
of uncertainty over the timing, strength, and the track of this
system.

Aviation 22z Tuesday through Sunday
The terminals are forecast to remainVFR through the 18z taf
period. The exceptions will be for possible brief reductions due
to smoke from prescribed burns near ksav this evening. Tonight
into Wednesday morning, the sfc pattern will feature an inverted
sfc trough over eastern nc with high pressure ridge over the
pee dee and coastal plain regions of sc. This pattern should
support a steady nne wind tonight through mid-day wed. Forecast
soundings support cloud bases lowering to 070-150 kft on wed.

Extended aviation:VFR.

Marine
Small craft advisories will remain across the marine zones outside
of charleston harbor, as the pressure gradient will continue to
support gusty NE winds through the night. Winds should frequently
gusts into the mid 20 kts across the nearshore waters and near
30 kts across the outer ga waters. Wave heights are forecast to
range between 7-10 ft across amz374 and mostly 4-7 ft across the
nearshore waters.

Extended marine: high pressure will remain inland and to our north
Wednesday while a coastal trough develops. The interaction between
these two features will cause gusty northeast winds and wind-driven
seas to continue through Wednesday afternoon. Conditions will
improve Wednesday night as the trough moves away and the winds
become offshore. The small craft advisories will expire as seas
subside in each zone, finally dropping off from the ga waters beyond
20 nm early Thu evening. The, between low pressure NE of the region
and high pressure building from the west, elevated offshore winds
will prevail into late week. As high pressure shifts east, winds
will turn toward the NE this weekend. Late week into early next
week, winds seas should remain below SCA levels.

Fire weather
While red flag conditions are not expected, remain ALERT for minimum
rh values as low as 25-30 percent and elevated offshore winds which
could lower fuel moisture, especially Thursday and Friday.

Tides coastal flooding
Coastal flood advisories have been posted across the sc ga coast
until 9 pm this evening. Astronomical factors and moderate to strong
northeast winds Wednesday will result in elevated tides through
Wednesday and perhaps Thursday. Minor flooding could occur
around the times of the evening high tides, and minor to
moderate flooding could occur with the morning high tides,
especially Wednesday.

Chs watches warnings advisories
Ga... Coastal flood advisory until 9 pm edt this evening for gaz117-
119-139-141.

Sc... Coastal flood advisory until 9 pm edt this evening for
scz048>051.

Marine... Small craft advisory until 6 pm edt Wednesday for amz352-354.

Small craft advisory until 6 am edt Thursday for amz350.

Small craft advisory until 9 pm edt Thursday for amz374.

Near term...

short term... Spr
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 mi43 min ENE 12 G 16 58°F 61°F1024.6 hPa
SAXG1 - Sapelo Island Reserve, GA 30 mi97 min NE 11 56°F 1024 hPa (-1.0)40°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 34 mi47 min NE 21 G 25 57°F 62°F7 ft1022.9 hPa (+0.0)42°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 mi41 minNE 510.00 miMostly Cloudy58°F28°F32%1024 hPa
Savannah-Hilton Head International Airport, GA21 mi44 minNNE 87.00 miOvercast58°F30°F36%1024.5 hPa
Wright Army Airfield (Fort Stewart)/Midcoast Regional Airport, GA22 mi41 minNE 510.00 miOvercast59°F31°F36%1024 hPa

Wind History from SVN (wind in knots)
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Last 24hrS5CalmCalmCalmN5N9NE9NE10NE11NE9NE9NE9NE7NE9NE10
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NE7NE12NE7NE8NE5
1 day agoNE3CalmCalmCalmCalmW3CalmCalmW3CalmCalmW4W3NW3CalmN7NW8N7W6W7SW9NW10SE4SE5
2 days agoN4N3N6N4N6N4N5NE4NE4N4N5N5N3NE3NE3NE5N8N9NE8NE5N3NE3E6NE4

Tide / Current Tables for Florida Passage, Ogeechee River, Georgia
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Florida Passage
Click for Map
Tue -- 02:07 AM EDT     -0.98 feet Low Tide
Tue -- 06:43 AM EDT     Moonset
Tue -- 07:29 AM EDT     Sunrise
Tue -- 07:59 AM EDT     8.61 feet High Tide
Tue -- 02:38 PM EDT     -0.82 feet Low Tide
Tue -- 06:13 PM EDT     Moonrise
Tue -- 07:35 PM EDT     Sunset
Tue -- 08:29 PM EDT     8.31 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.5-0.2-1-0.41.546.388.68.16.852.80.8-0.6-0.70.52.6578.28.27.35.6

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
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Tue -- 02:16 AM EDT     0.00 knots Slack
Tue -- 05:00 AM EDT     2.54 knots Max Flood
Tue -- 06:42 AM EDT     Moonset
Tue -- 07:28 AM EDT     Sunrise
Tue -- 08:43 AM EDT     -0.00 knots Slack
Tue -- 12:06 PM EDT     -2.48 knots Max Ebb
Tue -- 02:52 PM EDT     0.01 knots Slack
Tue -- 05:28 PM EDT     2.22 knots Max Flood
Tue -- 06:12 PM EDT     Moonrise
Tue -- 07:34 PM EDT     Sunset
Tue -- 09:07 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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-2.2-1.7-0.41.12.22.52.31.80.9-0.4-1.6-2.2-2.5-2.2-1.30.21.52.12.11.81.20.2-1.1-2

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 Charleston, SC (19,4,5,8)
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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.