Sunday, May19, 2019 L-36.com


Marine Weather and Tides
Whitemarsh Island, 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 6:22AMSunset 8:18PM Sunday May 19, 2019 7:15 AM EDT (11:15 UTC) Moonrise 8:16PMMoonset 6:07AM 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- 659 Am Edt Sun May 19 2019
Today..SE winds 5 to 10 kt. Seas 2 ft.
Tonight..S winds 10 to 15 kt. Seas 2 to 3 ft.
Mon..S winds 10 kt. Seas 2 to 3 ft.
Mon night..S winds 10 to 15 kt. Seas 2 to 3 ft.
Tue..S winds 5 to 10 kt. Seas 2 ft.
Tue night..S winds 5 to 10 kt. Seas 2 ft.
Wed..SE winds 5 to 10 kt. Seas 2 ft.
Wed night..SE winds 5 to 10 kt. Seas 2 ft.
Thu..SE winds 5 to 10 kt. Seas 2 ft.
Thu night..S winds 10 kt. Seas 2 ft.
AMZ300 659 Am Edt Sun May 19 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will be the dominant weather feature into next week.


7 Day Forecast for Marine Location Near Whitemarsh Island, GA
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location: 32.08, -81.03     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 191100
afdchs
area forecast discussion
national weather service charleston sc
700 am edt Sun may 19 2019

Synopsis
High pressure will be the dominant weather feature into next
week.

Near term through tonight
Today: ridging aloft is forecast to narrow a bit between mid
level short wave energy shifting from the plains toward the
great lakes and a weak low just north of the bahamas. The
surface ridge axis has slowly lifted a bit north of 30n and this
should result in more of a southeast synoptic flow later today.

The sea breeze should be even a bit more progressive on it's
inland push. Temps will likely be a couple degrees less than on
Sunday over the coastal corridor. We maintained a forecast with
silent pops over inland zones at mid to late afternoon. Dry air
aloft looks substantial, especially in the 850-500mb layers
where condensation pressure deficits are higher than on
Saturday. While a few spotty showers may pop along the sea
breeze (mainly west of i-95) dry and warm weather will continue
to persist otherwise.

Tonight: the narrow upper ridge will prevail across our entire
forecast area while a weak mid level short wave make it's way
to north ga late. Skies should remain most clear although some
lower stratocumulus could come off the water along the coast
late. Low temps similar to past mornings, not much change to the
forecast.

Short term Monday through Wednesday
Monday and Tuesday: the mid upper lvl ridge will temporarily weaken
with the approach of a h5 shortwave sfc cold front Monday evening
and night. Guidance suggests the front will be in a weakening state,
likely stalling before reaching the area, then shifting back north
on Tuesday. However, a few showers thunderstorms remain possible
over parts of southeast south carolina Monday afternoon evening,
then again Tuesday afternoon evening as h5 shortwave energy moves
across the area during peak diurnal heating. High temps should peak
in the upper 80s to lower 90s away from the coast Monday, then warm
into the lower to middle 90s away from the coast Tuesday. Lows
should range in the upper 60s to around 70 degrees.

Wednesday: sfc high pressure will eventually become centered along
the mid-atlantic and southeast coasts while a mid upper lvl ridge of
high pressure builds aloft. Given the setup, warm and dry conditions
will likely prevail mid week. In general, highs should warm into the
low mid 90s well inland while a more direct onshore wind limits
highs to the mid upper 80s east of the i-95 corridor.

Long term Wednesday night through Saturday
Dry weather should prevail mid to late week as sfc high pressure
extending from the western atlantic becomes centered over the
southeast under a building ridge of high pressure aloft. A warming
trend is anticipated through the week as the ridge aloft becomes
quite strong and centered over the southeast united states. Highs
should generally range in the low mid 90s away from the coast
Wednesday and Thursday with overnight lows in the upper 60s lower
70s. Temps should be even warmer during the weekend as the mid upper
lvl ridge makes a slight shift south, setting up a west-northwest
downslope flow across the region. This includes warmer conditions
along the beaches given the potential for a pinned seabreeze. In
general, afternoon highs should peak in the mid upper 90s away from
the coast and mid upper 80s along near the beaches. The combination
of heat and mixed out moisture could support heat index values
around 100 degrees away from the coast Friday afternoon and Saturday
afternoon. Overnight lows should also be mild, generally in the
low mid 70s each night.

Aviation 12z Sunday through Thursday
Vfr at kchs ksav through 12z Monday.

Extended aviation outlook:VFR conditions are expected at both chs
and sav terminals through the middle of the week.

Marine
A southerly flow will persist through tonight, with near shore
backing to more southeast during the afternoon and evening
hours along ga coast waters. Prior to daybreak Monday morning,
speeds will mainly be 15 kt or less and seas 2-3 ft with 3-4 ft
seas over outer ga waters later tonight.

Monday through Friday: high pressure will remain the dominant
weather feature across the coastal waters through late week,
supporting winds seas that remain below small craft advisory
levels. In general, south southwest winds will prevail through
Tuesday with wind speeds less than 15 kts. By Wednesday, winds
should become more south southeast, but remain at or below 10-15
kt as sfc high pressure stretches across the western atlantic.

Seas will range between 1-3 ft into Tuesday, then build no
higher than 1-2 ft Wednesday and Thursday.

Tides coastal flooding
Shallow coastal flooding is possible with the high tide this
evening along parts of the south carolina coast. We continue
mention this chance in the hazardous weather outlook.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term...

short term... Dpb
long term... Dpb
aviation...

marine...

tides coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 7 mi46 min SSE 1.9 G 2.9 73°F 76°F1018.4 hPa
41033 36 mi68 min SW 5.8 G 9.7 75°F 76°F1017.9 hPa
ACXS1 - ACE Basin Reserve, SC 45 mi91 min Calm 69°F 1018 hPa69°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 48 mi86 min S 5.8 G 7.8 76°F 76°F2 ft1017.4 hPa (+0.6)71°F
SAXG1 - Sapelo Island Reserve, GA 48 mi76 min Calm 68°F 1017 hPa (+0.0)66°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, GA7 mi20 minN 010.00 miFair67°F64°F92%1017.5 hPa
Savannah-Hilton Head International Airport, GA10 mi23 minN 010.00 miA Few Clouds67°F64°F93%1018.2 hPa
Hilton Head Island, Hilton Head Airport, SC20 mi26 minS 510.00 miFair72°F68°F88%1018.3 hPa

Wind History from SVN (wind in knots)
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Last 24hrSW5--CalmCalm--SE3SW6--SE8SE9SE11S9S8S7S8S6S7S6S6S3S3CalmCalmCalm
1 day agoSW7SW11S6W5SW6W9W5S5SE7SE12SE11S13S10S9--S6S4--S4S4----S3Calm
2 days agoCalmSW7SW9SW8SW4CalmCalm--S5S11S11
G17
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Tide / Current Tables for Fort Jackson, Savannah River, Georgia
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Fort Jackson
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Sun -- 04:06 AM EDT     -0.69 feet Low Tide
Sun -- 06:24 AM EDT     Sunrise
Sun -- 07:06 AM EDT     Moonset
Sun -- 09:34 AM EDT     7.77 feet High Tide
Sun -- 04:12 PM EDT     -0.50 feet Low Tide
Sun -- 08:17 PM EDT     Sunset
Sun -- 09:15 PM EDT     Moonrise
Sun -- 10:10 PM EDT     8.79 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.34.32.20.2-0.7-01.94.46.57.67.775.53.820.4-0.5-01.84.36.68.28.88.5

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
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Sun -- 01:44 AM EDT     -2.61 knots Max Ebb
Sun -- 04:22 AM EDT     0.01 knots Slack
Sun -- 06:23 AM EDT     Sunrise
Sun -- 06:51 AM EDT     2.10 knots Max Flood
Sun -- 07:05 AM EDT     Moonset
Sun -- 10:24 AM EDT     -0.00 knots Slack
Sun -- 01:49 PM EDT     -2.10 knots Max Ebb
Sun -- 04:22 PM EDT     0.00 knots Slack
Sun -- 07:06 PM EDT     2.35 knots Max Flood
Sun -- 08:16 PM EDT     Sunset
Sun -- 09:14 PM EDT     Moonrise
Sun -- 10:58 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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-1.9-2.4-2.6-1.9-0.60.91.92.11.81.30.5-0.7-1.5-2-2.1-1.7-0.50.922.42.21.81.1-0

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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Other links: Northern Pacific     Contential US     Full GOES-East
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.