Friday, July19, 2019 L-36.com


Marine Weather and Tides
Bluffton, SC

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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 6:28AMSunset 8:30PM Friday July 19, 2019 6:27 AM EDT (10:27 UTC) Moonrise 9:34PMMoonset 7:50AM Illumination 94% Phase: Waning Gibbous; Moon at 17 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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AMZ352 Waters From Edisto Beach Sc To Savannah Ga Out 20 Nm- 323 Am Edt Fri Jul 19 2019
Today..SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms this afternoon.
Tonight..SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms in the evening.
Sat..SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms in the morning.
Sat night..SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft. A slight chance of showers and tstms in the evening, then a chance of showers and tstms after midnight.
Sun..SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms.
Sun night..SW winds 15 kt with gusts to 20 kt. Seas 3 ft. A slight chance of showers and tstms.
Mon..SW winds 10 to 15 kt. Seas 3 ft. A slight chance of showers and tstms.
Mon night..SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms.
Tue..SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Tue night..SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 323 Am Edt Fri Jul 19 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. The area will remain situated between an inland trough and atlantic high pressure. A cold front is expected to stall over or close to the region by the middle of next week, bringing higher rain chances and somewhat cooler temperatures.


7 Day Forecast for Marine Location Near Bluffton, SC
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location: 32.24, -80.85     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 190801
afdchs
area forecast discussion
national weather service charleston sc
401 am edt Fri jul 19 2019

Synopsis
The area will remain situated between an inland trough and
atlantic high pressure. A cold front is expected to stall over
or close to the region by the middle of next week, bringing
higher rain chances and somewhat cooler temperatures.

Near term through tonight
Today: a weak flow will prevail aloft with a short wave trough
generally atop the local area, stuck between one anticyclone
over the mid ms valley and another across the southwest atlantic.

The surface and low level synoptic pattern is essentially the
same as it has been the past couple of days, with a lee side
trough and the oceanic ridge aligned east-west along 30 degrees
north latitude.

Moisture, instability and lift are favorable for more showers
and t-storms this occur afternoon, mainly initiated by the sea
breeze and proximity to the inland trough, aided by some weak
dpva aloft. The morning cap of 2-4c will take some time to
break, especially with convective temps in the lower and middle
90s. That would allow for the start of convection around 1-2 pm,
with coverage to peak at least in the scattered range during
the late afternoon when the stronger updrafts are shown by the
href. The highest pop of 50% will be near and west of i-95, but
there certainly could be higher coverage as boundary
interactionsoccur. Compared to yesterday, dcape today is less
(only around 800-1000 j kg) and we don't have much dry air in
the vertical. Thus the potential for severe winds might be a
little lower than it was Thursday. Still, where boundary
collisions occur, a few pulse severe storms can occur after 3 or
4 pm. Since there isn't much steering flow and pwat is near 2
inches, some of the storms will produce locally heavy rains
leading to localized flooding.

Temps are starting the day a little "cooler" than recent
mornings, and with an earlier start to showers and t-storms than
yesterday, we shouldn't be quite as hot, with MAX temps
generally in the lower and middle 90s. Associated heat indices
will stay short of any requirement of a heat advisory. Our
hourly temps will show the impacts of the convection and greater
cover of clouds late in the day, with values much lower than
the typical diurnal curve wherever we have 50% pop.

Tonight: convection will gradually diminish in strength and
coverage during the mid and late evening, probably entirely
shutting off by 11 pm. The rest of the night will then be
rainfree, as any late night convection that forms over the ocean
will remain offshore where the better instability and
convergence will be found. Lows will be near or slightly above
climo, as cloud cover decreases during the post midnight hours.

Short term Saturday through Monday
Saturday and Sunday: broad upper ridging will accompany the familiar
summer pattern of surface ridging along 30n through the southwest
atlantic and an inland piedmont surface trough from northeast ga to
the carolinas. Isolated to scattered mainly diurnal convection is
anticipated both days with models keying in some drier mid upper
level air, keeping pops in the 30 to 40 percent range from beaches
to inland on Saturday with even less coverage expected on Sunday.

Hot temps will persist with highs at least in the mid 90s and peak
heat indices in the 105 to 110 degree ranges.

Monday: upper ridging begins an erosion trend and high temps should
be a degree or two below Sunday's but still in the lower to mid 90s.

Scattered afternoon and evening showers and tstms mainly late day
and more prominent well inland closer to the surface trough.

Long term Monday night through Thursday
A substantial pattern change for the southeast states with the
summer ridge giving way to broad mid upper level troughing. A
slow moving cold front is forecast to drift from the mountains on
Tuesday, over eastern ga and the coastal carolinas during mid week.

Confidence continues to slowly increase for numerous showers and
tstms across the forecast area during the middle of next week. The
increase in clouds and precip will result in lower temps that
average near or slightly below climo after Tuesday.

Aviation 08z Friday through Tuesday
Vfr conditions will prevail into at least early afternoon.

Thereafter we expect widely scattered to scattered shra tsra at
or near the terminals, with the highest probabilities of flight
restrictions to occur roughly between 19z and 24z. For now we
have just vcts and CB clouds, but subsequent TAF issuances will
likely require more definitive impacts.

Extended aviation outlook: brief flight restrictions and
gusty shifting winds could occur within near thunderstorms,
especially during the afternoon evening hours. The chance for
thunderstorms associated flight restrictions could be greatest
starting Tuesday as a cold front approaches the region.

Marine
Today and tonight: the local waters will remain between an
inland ridge to the west-northwest and the typical bermuda-
azores high to the southeast. What isn't typical is that there
is a fairly tight gradient between these two features, and when
sea breeze circulations and nocturnal low level jet impacts are
thrown into the mix, sw'erly winds will be as high as 15 to 20
kt at times. The resulting seas will average between 2 and 4
feet. For the time being it looks like the coverage of t-storms
will be isolated through the period.

This weekend: a similar synoptic pattern will persist with a
trough of low pressure inland and offshore high pressure.

Southwest to south directions will persist with speeds enhanced
near the coast during the afternoon evening hours and across
coastal waters during the evening overnight. Through this
weekend, winds should remain in the 15 to 20 knot range during
surging periods with seas in the 2 to 4 feet, highest well
offshore.

Early next week, not much change with slightly lower diurnal wind
speeds and seas 2-3 ft. By midweek, a slow moving cold front is
expected to near the waters with light winds and slight seas. The
main change will be a significant uptick in coverage of showers and
tstms by Wednesday.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term...

short term...

long term...

aviation...

marine...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 14 mi58 min WSW 1.9 G 2.9 79°F 86°F1017.3 hPa
41033 24 mi80 min W 9.7 G 12 84°F 87°F1016.6 hPa
ACXS1 - ACE Basin Reserve, SC 30 mi103 min Calm 78°F 1016 hPa75°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 58 mi38 min SW 9.7 G 12 83°F 84°F2 ft1016.7 hPa (-0.4)80°F

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hilton Head Island, Hilton Head Airport, SC8 mi2.5 hrsN 010.00 miFair77°F73°F89%1016.6 hPa
Beaufort County Airport, SC17 mi33 minN 010.00 miFair79°F73°F84%1016.9 hPa
Savannah-Hilton Head International Airport, GA20 mi35 minSSW 510.00 miMostly Cloudy77°F73°F88%1017.1 hPa
Hunter U. S. Army Airfield, GA22 mi92 minN 010.00 miMostly Cloudy76°F72°F89%1016.2 hPa

Wind History from HXD (wind in knots)
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Last 24hr----S5S5SW8SW8SW5S5S5S5S14S8S14
G17
S14S14S15S10W4CalmSW4CalmCalmCalmCalm
1 day agoCalm--CalmCalmCalmCalmN6NW6NW3E3SE3S4S11S9S13S11S1110
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2 days ago----CalmCalmN5NE5NE5NE6NE5E3E5SE6
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--SE5SE5SE5S5S3--------SW3Calm

Tide / Current Tables for Bluffton, May River, South Carolina
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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 Savannah River Entrance, Georgia Current
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Savannah River Entrance
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Fri -- 03:14 AM EDT     -2.03 knots Max Ebb
Fri -- 05:47 AM EDT     0.01 knots Slack
Fri -- 06:30 AM EDT     Sunrise
Fri -- 08:09 AM EDT     1.81 knots Max Flood
Fri -- 08:50 AM EDT     Moonset
Fri -- 11:47 AM EDT     -0.00 knots Slack
Fri -- 03:09 PM EDT     -1.56 knots Max Ebb
Fri -- 05:49 PM EDT     0.00 knots Slack
Fri -- 08:22 PM EDT     1.83 knots Max Flood
Fri -- 08:28 PM EDT     Sunset
Fri -- 10:32 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-1.3-1.8-2-1.9-10.31.41.81.61.20.7-0.2-1-1.5-1.6-1.5-0.90.21.21.81.71.40.9

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 (6,6,7,8)
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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.