Friday, August23, 2019 L-36.com


Marine Weather and Tides
Midway, GA

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:55AMSunset 8:03PM Friday August 23, 2019 2:25 AM EDT (06:25 UTC) Moonrise 11:55PMMoonset 1:03PM Illumination 48% Phase: Third Quarter Moon; Moon at 22 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- 1246 Am Edt Fri Aug 23 2019
Tonight..S winds 10 to 15 kt. Seas 2 ft.
Fri..SW winds 5 to 10 kt, becoming se in the afternoon. Seas 2 to 3 ft.
Fri night..S winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms after midnight.
Sat..S winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms.
Sat night..E winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Sun..E winds 5 to 10 kt. Seas 2 ft. Showers likely. A slight chance of tstms in the morning, then tstms likely in the afternoon.
Sun night..E winds 5 to 10 kt. Seas 2 ft. Showers likely. Tstms likely, mainly in the evening.
Mon..E winds 5 to 10 kt. Seas 2 ft. Showers likely with a slight chance of tstms.
Mon night..SE winds 5 to 10 kt. Seas 2 ft. A chance of showers with a slight chance of tstms.
Tue..E winds 5 to 10 kt. Seas 2 ft. A chance of showers with a slight chance of tstms.
Tue night..S winds 5 to 10 kt. Seas 2 ft. A chance of showers with a slight chance of tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 1246 Am Edt Fri Aug 23 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure and an inland trough will prevail through Friday. A cold front will advance into the area Saturday then will stall over or just south of the region Sunday. Low pressure could develop along the stationary front and track northeast and offshore through the first half of next week.


7 Day Forecast for Marine Location Near Midway, GA
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location: 31.73, -81.21     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 230506
afdchs
area forecast discussion
national weather service charleston sc
106 am edt Fri aug 23 2019

Synopsis
Atlantic high pressure and an inland trough will prevail
through Friday. A cold front will advance into the area
Saturday then will stall over or just south of the region
Sunday. Low pressure could develop along the stationary front
and track northeast and offshore through the first half of next
week.

Near term until 6 am this morning
Midnight update: forecast on track with little to no changes
needed for the overnight.

Deep layered ridging will again exist across the area leading to
a generally quiet, but warm and humid night. There could be a
few showers approaching the charleston and colleton county
coasts from the atlantic late, but the synoptic flow is roughly
parallel or slightly offshore in direction, which suggests that
it's a better chance they remain over the atlantic. Lows tonight
will again be a persistence forecast. This supports lower and
middle 70s far inland, upper 70s to near 80f over the coastal
corridor. We'll be close to the record high min of 81f last set
in 2016 in downtown charleston for august 23.

Short term 6 am this morning through Sunday
Friday: expect conditions similar to the past couple of days with
high temperatures in the lower to middle 90s, heat index values in
the 100-105f range and isolated scattered thunderstorms especially
during the afternoon evening hours. Best coverage of convection
should focus inland along the sea breeze other mesoscale boundaries.

The potential for severe weather excessive rainfall should remain
limited to brief isolated locations where thunderstorm updrafts
surge due to boundary interactions cell mergers.

Friday night: a cold front will approach the region from the north.

As a result, upstream thunderstorms could push into the region,
especially into northern counties. Thus, evening inland slight
chance chance pops to account for ongoing diminishing diurnal
convection should transition to slight chance chance pops south of
the cold front overnight.

Saturday and Sunday: the cold front will push into the region
Saturday and should stall over southern counties or just south east
of the area Sunday. This scenario should support increased coverage
of showers thunderstorms. Saturday, highest likely pops reside north
of interstate 16 from late morning through evening, and chance pops
persist through the night. Sunday, likely pops encompass most of the
forecast area, with highest pops shifted closer to the stalling
front over southern western counties. Meanwhile, high temperatures
Saturday will range from the middle to upper 80s far north to the
middle 90s far interior south. Then, more widespread high temps in
the middle to upper 80s are expected Sunday.

Enhanced coverage of showers thunderstorms will translate to a
potential for locally excessive rainfall this weekend. Also, cannot
rule out a couple of severe thunderstorms with damaging wind gusts
south of the advancing cold front Saturday afternoon evening, then
the threat for severe weather should remain very low Sunday.

Long term Sunday night through Thursday
Low confidence this period. There is a bit better agreement amongst
the latest gfs ECMWF that any weak low pressure system should remain
well offshore as it tracks to the northeast and away from the
forecast area Monday. However, the lingering front and upper level
energy will remain along with deep moisture so it looks to remain
more unsettled than normal through at least Wednesday. At this time
it appears as though heavy rain is the main concern with localized
flooding possible, especially near the coast around the times of
high tide.

Aviation 06z Friday through Tuesday
Vfr will dominate through 00z Saturday. The next chance of
convection at the terminals will occur between about 18z and 23z
Friday, but the better odds of shra tsra looks to occur inland
from both kchs and ksav. Thus we have no mention this far in
advance.

Extended aviation outlook: periodic flight restrictions expected in
showers thunderstorms at kchs ksav through early next week.

Marine
Overnight: atlantic high pressure will continue, leading to s
and SW winds as high as 12-17 kt, before they veer a little more
westerly late with land breeze influences and speeds drop
several knots. Seas will average 2 or 3 ft.

Friday through Monday: after another typical day dominated by
the sea breeze and accompanied by seas of 2-3 feet Friday, a
cold front will push into the waters Saturday then will stall
over or just south east of the waters by late this weekend. As a
result, winds will shift toward the east southeast Saturday
then will turn to the northeast Sunday. Odds favor winds
remaining below 20 knots and seas remaining 2-3 feet this
weekend. However, expect greater coverage of
showers thunderstorms and an increased potential for locally
hazardous thunderstorm conditions.

Early next week, forecast uncertainty increases. Low pressure could
develop along or close to the stationary front and track northeast
late this weekend or early next week. Any low pressure is expected
to remain offshore, but the gradient between the offshore low and
high pressure centered north of the waters could tighten
sufficiently to produce small craft advisory winds seas across at
least parts of the coastal waters early next week.

Waterspouts: most recent forecast sounding data is showing a
waterspout risk solidly in the "moderate" category between 7 am
and 12 pm Friday. This risk would be along a convergent line
that forms not far off the south carolina coast during that
time. We will carefully monitor for this potential.

Rip currents: increasing east northeast winds could contribute to an
enhanced risk of rip currents on area beaches late this weekend into
early next week, especially if offshore low pressure develops and
intensifies.

Tides coastal flooding
Astronomical tides will be running close to minor coastal flood
advisory levels next week and onshore winds could lead to even
higher tides, mainly during the evening high tide cycles starting
Sunday. In addition, there is the potential for some heavy rain
around the times of high tide which could exacerbate any flooding
issues.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term...

short term...

long term...

aviation...

marine...

tides coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAXG1 - Sapelo Island Reserve, GA 22 mi86 min S 5.1 81°F 1018 hPa (+1.0)77°F
FPKG1 - 8670870 - Fort Pulaski, GA 27 mi56 min S 4.1 G 8 83°F 85°F1017.9 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 29 mi36 min SSW 7.8 G 7.8 83°F 83°F2 ft1017.1 hPa (-0.6)79°F

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wright Army Airfield (Fort Stewart)/Midcoast Regional Airport, GA22 mi3.5 hrsN 010.00 miFair78°F73°F85%1017.8 hPa

Link to 5 minute data for KSVN

Wind History from SVN (wind in knots)
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Last 24hrW3CalmCalmSW3W3CalmSW4SW7SW7SW6SE4SE8SE10SE11NE11
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1 day agoCalmCalmCalmCalmCalmCalmSW5W5SW6SW6CalmS8SE8SE11S10S5S4S6S5S6S4S6S3S3
2 days agoCalmCalmCalmCalmCalmW3SW4CalmCalmSE4--S7SE6SE9SE7SE10S8SE6SE6S4S6S5S4Calm

Tide / Current Tables for North Newport River (Daymark 119), Georgia
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Florida Passage, Bear River, Georgia
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Florida Passage
Click for Map
Fri -- 12:15 AM EDT     Moonrise
Fri -- 02:32 AM EDT     6.85 feet High Tide
Fri -- 06:54 AM EDT     Sunrise
Fri -- 08:48 AM EDT     0.78 feet Low Tide
Fri -- 10:58 AM EDT     Last Quarter
Fri -- 02:02 PM EDT     Moonset
Fri -- 03:03 PM EDT     7.69 feet High Tide
Fri -- 07:59 PM EDT     Sunset
Fri -- 09:25 PM EDT     1.44 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.16.16.86.86.14.93.421.10.81.42.94.66.27.37.77.36.34.83.32.21.51.62.4

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (2,6,7,8)
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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.