Thursday, June20, 2019 L-36.com


Marine Weather and Tides
Garden City, GA

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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 6:17AMSunset 8:34PM Thursday June 20, 2019 8:03 PM EDT (00:03 UTC) Moonrise 10:22PMMoonset 8:09AM Illumination 88% Phase: Waning Gibbous; Moon at 18 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- 344 Pm Edt Thu Jun 20 2019
.severe Thunderstorm watch 408 in effect until 10 pm edt this evening...
Tonight..W winds 15 to 20 kt. Seas 3 to 4 ft. Showers and tstms likely, mainly this evening. Some tstms may produce damaging winds and large hail this evening.
Fri..W winds 15 to 20 kt, becoming sw 10 kt in the afternoon. Seas 2 to 3 ft.
Fri night..SW winds 10 kt. Seas 1 foot.
Sat..SW winds 5 to 10 kt. Seas 1 foot. A chance of showers and tstms in the afternoon.
Sat night..SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Sun..W winds 5 to 10 kt, becoming sw in the afternoon. Seas 1 foot. A slight chance of showers and tstms in the morning, then a chance of showers and tstms in the afternoon.
Sun night..SW winds 10 kt. Seas 2 ft. A chance of showers and tstms.
Mon..SW winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms.
Mon night..SW winds 10 kt. Seas 2 ft. A slight chance of showers and tstms.
Tue..SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Tue night..SW winds 10 kt. Seas 2 ft. A chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 344 Pm Edt Thu Jun 20 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A trough of low pressure will persist over the southeast through at least the middle of next week.


7 Day Forecast for Marine Location Near Garden City, GA
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location: 32.07, -81.11     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 202302
afdchs
area forecast discussion
national weather service charleston sc
702 pm edt Thu jun 20 2019

Synopsis
A trough of low pressure will persist over the southeast
through at least the middle of next week.

Near term until 6 am Friday morning
Not much change with the latest update. Main concern through
the evening is the threat for severe thunderstorms as a squall
line pushes toward the coast in an environment favorable for
damaging wind gusts due to downdraft CAPE over 1000 j kg. The
line has already pushed through screven, jenkins, and allendale
counties so the severe risk there looks to have ended and we'll
likely remove those areas from the severe thunderstorm watch
soon. Large hail and tornadoes appear to be a very low risk at
this point. It will be breezy near the coast until storms arrive
with gusts near 30 mph at times. Most of the rain should end by
around midnight with lows by daybreak in the lower to mid 70s
inland and upper 70s near the coast.

Short term 6 am Friday morning through Sunday
A shortwave ridge will settle over the area on Friday while
weak surface high pressure expands southeast. Dry, warm weather
will result, along with slightly lower dewpoints. Highs will top
out in the middle 90s.

The upper ridge axis will remain just to the west Saturday into
Sunday, keeping a warm airmass in place. However, a series of
shortwaves will drop southeast through the area during the
period. Fairly strong instability is expected to develop
Saturday and Sunday, which, combined with the shortwave energy,
should allow scattered to numerous showers and thunderstorms to
affect the area especially during the afternoon evening. Given
the potential for more organized convection due to the upper
shortwave energy, some thunderstorms could be severe with
damaging winds and large hail.

High temps in the low to mid 90s with dewpoints in the low to
mid 70s may result in an hour or two of 105f heat indices in a
few spots both days.

Long term Sunday night through Thursday
Weak troughing at the surface and aloft will persist through at
least the middle of next week. Guidance continues to depict above-
normal temperatures. Interestingly, despite the trough, medium range
guidance suggests that coverage of diurnal convection could become
sparse next week, resulting in below-normal daily pops.

Aviation 00z Friday through Tuesday
Expect the main impact this period to be from showers tstms
at both kchs and ksav toward evening, mainly 00-01z. Wind gusts
greater than 50 kt will be possible.

Extended aviation outlook: mainlyVFR.

Marine
Tonight: elevated winds seas are expected ahead of a squall
line of storms which should push into the waters this evening
with potentially even greater winds over 50 kt. Seas will range
from 3-5 ft with some 6 ft seas off the charleston county coast
and over the outer ga waters.

Friday through Tuesday: atlantic high pressure will prevail
over the marine area, maintaining a southwest to south flow
through the period. Winds seas expected to remain below small
craft advisory criteria.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Small craft advisory until 11 pm edt this evening for amz330.

Small craft advisory until 2 am edt Friday for amz350-352.

Small craft advisory until 6 am edt Friday for amz374.

Near term... Rjb
short term... Jrl
long term... Spr
aviation... Jrl rjb
marine... Jrl rjb


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 11 mi52 min SW 8 G 13 90°F 82°F1009.8 hPa
41033 40 mi56 min SW 21 G 27 85°F 83°F1009 hPa
SAXG1 - Sapelo Island Reserve, GA 46 mi64 min SW 18 89°F 1010 hPa (-2.0)77°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 48 mi74 min SSW 16 G 19 84°F 83°F4 ft1010.4 hPa (-1.5)79°F
ACXS1 - ACE Basin Reserve, SC 48 mi79 min S 1 90°F 1009 hPa77°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, GA3 mi2.1 hrsSW 1110.00 miA Few Clouds92°F73°F55%1009 hPa
Savannah-Hilton Head International Airport, GA7 mi71 minW 1210.00 miMostly Cloudy93°F73°F52%1009.4 hPa
Hilton Head Island, Hilton Head Airport, SC24 mi74 minS 10 G 1610.00 mi88°F78°F75%1009.5 hPa

Wind History from SVN (wind in knots)
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Last 24hrSW7SW7S7SW5SW9SW8SW7--SW9SW10SW10SW9W10W10W14W12W11W10
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1 day agoS6S10SW7SW6SW5SW4W7W4W4SW4SW5SW5SW5SW7W8SW8SW8SW10SW6
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2 days ago--S8S6SE4SE3SE3CalmS3CalmCalmCalmCalmCalmE7E3CalmS3N3CalmSE5SE5SE10SE7
G15
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Tide / Current Tables for Savannah (Bull Street), Georgia
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Savannah (Bull Street)
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Thu -- 05:52 AM EDT     0.09 feet Low Tide
Thu -- 06:18 AM EDT     Sunrise
Thu -- 09:09 AM EDT     Moonset
Thu -- 11:19 AM EDT     7.30 feet High Tide
Thu -- 05:48 PM EDT     0.55 feet Low Tide
Thu -- 08:33 PM EDT     Sunset
Thu -- 11:22 PM EDT     Moonrise
Thu -- 11:48 PM EDT     8.11 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.27.45.842.10.60.112.956.67.37.16.45.13.420.90.61.43.25.36.97.9

Tide / Current Tables for Savannah River Entrance, Georgia Current (2) (expired 1999-12-31)
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Savannah River Entrance
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Thu -- 03:13 AM EDT     -2.63 knots Max Ebb
Thu -- 06:17 AM EDT     Sunrise
Thu -- 06:47 AM EDT     0.00 knots Slack
Thu -- 08:53 AM EDT     1.27 knots Max Flood
Thu -- 09:08 AM EDT     Moonset
Thu -- 11:52 AM EDT     -0.00 knots Slack
Thu -- 03:28 PM EDT     -2.21 knots Max Ebb
Thu -- 06:44 PM EDT     0.00 knots Slack
Thu -- 08:32 PM EDT     Sunset
Thu -- 09:06 PM EDT     1.56 knots Max Flood
Thu -- 11:21 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.3-1.3-2.2-2.6-2.5-1.8-0.90.211.310.5-0.1-0.8-1.6-2.1-2.1-1.6-0.70.31.21.61.30.8

Weather Map and Satellite Images
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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.
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Wind Forecast for Charleston, SC (20,4,5,8)
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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.