Saturday, August17, 2019 L-36.com


Marine Weather and Tides
Talahi Island, 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 6:48AMSunset 8:08PM Saturday August 17, 2019 2:06 PM EDT (18:06 UTC) Moonrise 8:38PMMoonset 7:33AM Illumination 95% 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- 1204 Pm Edt Sat Aug 17 2019
.small craft advisory in effect until 9 pm edt this evening...
This afternoon..SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 5 ft. Showers and tstms.
Tonight..SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. Showers and tstms likely, mainly in the evening.
Sun..SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Sun night..SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Mon..SW winds 5 to 10 kt, becoming S in the afternoon. Seas 2 ft. A chance of showers and tstms.
Mon night..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Tue..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Tue night..S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Wed..S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Wed night..S winds 5 to 10 kt. Seas 3 ft. A chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 1204 Pm Edt Sat Aug 17 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A weak low pressure system will track northeast along the georgia and south carolina coast today. A stationary front will linger nearby through Sunday. Atlantic high pressure and an inland trough will then prevail through much of the week.


7 Day Forecast for Marine Location Near Talahi Island, GA
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location: 32.12, -80.99     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 171642 cca
afdchs
area forecast discussion... Corrected
national weather service charleston sc
1242 pm edt Sat aug 17 2019

Synopsis
A weak low pressure system will track northeast along the
georgia and south carolina coast today. A stationary front will
linger nearby through Sunday. Atlantic high pressure and an
inland trough will then prevail through much of the week.

Near term until 6 pm this evening
After exhibiting a rather impressive presentation earlier on
radar, the surface low looks to have moved crossed saint helena
sound and into far southwest charleston county per current
satellite and radar data. Convection is slowly diminishing as
some slightly drier air works in from the west on the backside
of the low, but pwats remain quite elevated.

Expect convection to re-fire across the interior over the next
few hours as instability builds and moisture convergence
remains strong along a weak surface trough and several cyclonic
convergence bands left in the wake of the low. Goes-e is showing
some significant insolation from reidsville to allendale and
points west so have nudged high temperatures up slightly in this
region with a few upper 90s possible by late afternoon where
convection does not occur. Heat indices could also reach 104-107
in this area, but is expected to remain below the 110 criteria for
a heat advisory. Closer to the coast considerable cloud cover and
convection should keep highs in the lower-mid 80s.

Short term 6 pm this evening through Tuesday
Tonight: the weak low pressure is forecast to lift north of the
forecast area. As the low departs, drier air should arrive from
the west, shifting the deep convection gradually east. However,
given weak flow across the area, I will keep schc to chc pops
through the overnight hours. Low temperatures are forecast to
range from the low 70s inland to the mid to upper 70s near the
beaches.

Sunday through Tuesday: moderate confidence this period. A
stalled front inland will eventually dissipate late in the
period while weak upper troughing lingers across the area. We
maintained above normal rain chances, especially Saturday. With
pwats around 2.0 inches most of the time and forcing from some
upper level energy and mesoscale boundaries like the sea breeze,
we think rain chances will generally be higher than normal,
mainly during the afternoon evening. Given the deep moisture and
light low-mid level winds there will be at least a small risk
of localized heavy rain flooding but not expecting anything much
more significant than the norm. Also can't completely rule out
isolated severe storms each day but conditions aren't that
favorable for much severe weather. Temperatures should be near
to above normal.

Long term Tuesday night through Friday
Moderate confidence this period. High pressure will linger to the
east with low pressure inland. We generally expect a fairly typical
summertime pattern with mainly afternoon evening scattered showers
and thunderstorms, although the some showers and storms could
persist overnight depending on the placement strength of the upper
level low. An approaching cold front late in the week could lead to
better rain chances but confidence is low in any significant impacts
at this point. Temperatures should remain near or above normal.

Aviation 18z Saturday through Thursday
Kchs: immediate impacts from showers tstms has ended. Expect
scattered activity to redevelop by mid-late afternoon, which
could impact the terminal. Will handle this with a MVFR tempo
from 21-00z.VFR is expected for the remainder of the period.

Ksav: convection is already starting to re-fire near the
terminal which will linger through at least mid-afternoon.

Initial thoughts are to carry a tempo for MVFR conditions in
tsra through 21z, but this may need to be adjusted at the last
minute pending radar trends at issuance time.VFR is expected
for the remainder of the period.

Extended aviation outlook: periodic restrictions from mainly
afternoon evening showers and thunderstorms expected at
kchs ksav through mid week.

Marine
Expanded the small craft advisory into the beaufort county
waters per latest trends. Think gusts to 25 kt will diminish
across the georgia nearshore waters soon, so an advisory was
not issued for that zone.

The pressure gradient across the marine zones will tighten today
as weak low pressure track NE over the coastal plain of ga and
sc. As a result, SW winds will increase during the daylight
hours, with gusts around 25 kts across the charleston co.

Nearshore waters and the outer ga waters. Wave heights are
forecast to build to 3-5 ft, with 6 ft expected 50 nm and
beyond. A small craft advisory is in effect until 9 pm for
amz350 and amz374. Thunderstorms will remain common across the
marine zones today into late tonight, greatest coverage across
the nearshore sc waters. Wind and wave conditions will improve
slightly tonight as the weak low lifts north of the region.

Sunday through Thursday: atlantic high pressure and an inland
trough will result in mainly south southwest winds through the
period. No significant marine impacts are expected other than some
stronger storms from time to time.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Small craft advisory until 9 pm edt this evening for amz350-
352.

Small craft advisory until 11 pm edt this evening for amz374.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 7 mi55 min SSW 9.9 G 16 78°F 85°F1016.7 hPa
41033 33 mi59 min WSW 21 G 29 80°F 85°F1015.3 hPa
ACXS1 - ACE Basin Reserve, SC 42 mi82 min SW 1 80°F 1015 hPa79°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 50 mi77 min SW 18 G 19 79°F 84°F5 ft1016.7 hPa (+1.1)76°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, GA11 mi71 minS 710.00 miLight Rain78°F74°F91%1016.2 hPa
Savannah-Hilton Head International Airport, GA11 mi74 minS 1110.00 miOvercast81°F79°F94%1016.1 hPa
Hilton Head Island, Hilton Head Airport, SC17 mi77 minSW 910.00 miMostly Cloudy79°F77°F94%1016.3 hPa

Link to 5 minute data for KSAV

Wind History from SAV (wind in knots)
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Last 24hrS9SE10SE10S12S9S9S7S7S9S6S5S7SW4SW5SW4SW3SW3SW3SW6W9W7SW5S11S13
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2 days ago3S12SW11N6E4E8S5SW8W4CalmCalmN4CalmS7S5SW6CalmW5SW3W3W53W4SW4

Tide / Current Tables for Turnbridge Landing, Salt Water Creek, New River, South Carolina
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Turnbridge Landing
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Sat -- 05:07 AM EDT     0.41 feet Low Tide
Sat -- 06:49 AM EDT     Sunrise
Sat -- 08:33 AM EDT     Moonset
Sat -- 11:37 AM EDT     7.24 feet High Tide
Sat -- 05:10 PM EDT     0.66 feet Low Tide
Sat -- 08:06 PM EDT     Sunset
Sat -- 09:38 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.86.75.13.11.30.40.81.93.55.16.47.17.26.34.83.11.50.7123.55.16.57.4

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
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Sat -- 02:39 AM EDT     -1.95 knots Max Ebb
Sat -- 05:12 AM EDT     0.00 knots Slack
Sat -- 06:49 AM EDT     Sunrise
Sat -- 07:38 AM EDT     1.93 knots Max Flood
Sat -- 08:32 AM EDT     Moonset
Sat -- 11:15 AM EDT     -0.00 knots Slack
Sat -- 02:30 PM EDT     -1.64 knots Max Ebb
Sat -- 05:23 PM EDT     0.00 knots Slack
Sat -- 07:55 PM EDT     1.83 knots Max Flood
Sat -- 08:05 PM EDT     Sunset
Sat -- 09:37 PM EDT     Moonrise
Sat -- 11:40 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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-0.9-1.6-1.9-1.9-1.4-0.311.81.91.510.2-0.7-1.4-1.6-1.6-1.3-0.40.71.61.81.61.10.6

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 (14,3,4,5)
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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.