Tuesday, May23, 2017 L-36.com

Marine Weather and Tides
George, SC

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:08AMSunset 8:17PM Tuesday May 23, 2017 4:47 AM EDT (08:47 UTC) Moonrise 3:45AMMoonset 4:54PM Illumination 6% Phase: Waning Crescent; Moon at 27 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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AMZ256 Coastal Waters From Murrells Inlet To South Santee River Sc Out 20 Nm- 322 Am Edt Tue May 23 2017
.small craft advisory in effect from 2 pm edt this afternoon through late tonight...
Today..SW winds 10 to 15 kt with gusts up to 20 kt... Increasing to 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft...building to 4 to 6 ft this afternoon. Showers and tstms.
Tonight..W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft...subsiding to 3 to 5 ft after midnight. Showers and tstms.
Wed..SW winds 15 to 20 kt...increasing to 20 to 25 kt in the afternoon. Seas 3 to 5 ft...building to 4 to 6 ft in the afternoon. Showers and tstms.
Wed night..SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Showers and tstms.
Thu..SW winds 20 to 25 kt...diminishing to 15 to 20 kt in the afternoon. Seas 4 to 6 ft...subsiding to 3 to 5 ft in the afternoon. A chance of showers and tstms.
Thu night..W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Fri..W winds 10 to 15 kt. Seas 2 to 4 ft.
Sat..W winds 10 kt...becoming s. Seas 2 to 3 ft... Building to 2 to 4 ft. Winds and seas higher in and near tstms.
AMZ200 322 Am Edt Tue May 23 2017
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. SEveral waves of low pressure will move along a front stalled across the inland carolinas through much of the week.

7 Day Forecast for Marine Location Near George, SC
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location: 33.37, -79.27     debug

Area Discussion for - Wilmington, NC
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Fxus62 kilm 230651
area forecast discussion
national weather service wilmington nc
251 am edt Tue may 23 2017

Waves of low pressure will develop along stalled cold front
producing a good chance of showers and thunderstorms through
mid week. A cold front trailing from a deep low pressure system
over the ohio valley on Thursday will push through, bringing
the final round of storms to the area. High pressure will build
in on Friday maintaining quieter weather for much of the

Near term /through tonight/
As of 3 am Tuesday... Moisture laden broad southwest flow will
continue to impact the area through the near term period.

Guidance has been somewhat consistent in showing another wave of
showers and thunderstorms across the coast this morning and
another more potent feature later this afternoon and evening.

With some areas, albeit somewhat isolated showing 3-6 inches of
storm total QPF already, it is prudent to issue a flash flood
watch beginning this morning and lasting through 2 am tonight.

Based on the events of Monday we could easily see another 2-4
inches of rain with isolated higher amounts. Fortunately we
haven't seen a lot of rain the past couple of weeks so this will
mitigate the situation to a certain degree. Severe threat
remains in place but with very warm and obviously moist profiles
it will take some doing for precipitation loading to manifest
itself into severe gusts. SPC has most of the area in a marginal
risk. Highs in the lower 80s with overnight lows in the middle
to upper 60s.

Short term /Wednesday through Thursday night/
As of 3 am Tuesday... Unsettled weather continues into the short
term as a very slow moving frontal system tracks across the
eastern carolinas. Model disparities makes precip timing an
issue for Wednesday so have opted for categorical pops,
indicating widespread convection, through that 24 hour period.

Although confidence is high that all locations will see
measurable precip, if not a substantial amount for most places,
confidence is low as to actual timing of the event. Thursday is
a little more clear cut in that the front will be moving
offshore early in the period, so bulk of remaining precip will
be during the daytime, likely early, with a dry overnight.

Long term /Friday through Monday/
As of 3 pm Monday... Deep frontal moisture to be offshore by the
start of the period. However the main trough axis and strongest
shortwave will be crossing the area and this should manage to
squeeze a few light and short-lived showers. Continued dry
advection and the lifting of the trough Thursday night should
keep us dry despite one last final and moderately strong
vorticity center streaking by. Zonal flow will keep the weekend
dry and fairly seasonable with only gradually increasing surface

Aviation /06z Tuesday through Saturday/
As of 06z Tuesday... Challenging conditions for the aviation
community the next 24-36 hours and maybe beyond. For the near
future, expect MVFR conditions area wide with some intervals of
ifr mingled in as areas of showers and thunderstorms move
through occasionally. During the next six to eight hours inland
sites have the highest chances of ifr and have addressed with
tempo groups through about 15 utc. A little more iffy at the
coast as another round of showers and thunderstorms move across
which oddly enough keeps the boundary layer a little more active
somewhat precluding fog and persistent lower ceilings. The best
chance of widespread ifr conditions is late tonight in the wake
of another round of convection when a weak surface pattern is
left behind to work with all the low level moisture.

Extended outlook... Reduced flight categories will be possible
in periodic showers and thunderstorms through Thursday. The
strongest convective activity should occur Wednesday.

Near term /through tonight/...

as of 3 am Tuesday... .Somewhat distorted wind fields across the
waters this morning due to earlier and current convection. A
good southwest flow should reemerge in just a few hours however.

Winds speeds increase to 15-20 knots later today and increase
even further tonight leading to some marginal small craft seas
of 5-7 feet. Will go ahead and raise an advisory for the
afternoon and overnight hours.

Short term /Wednesday through Thursday night/...

as of 3 am Tuesday... The overall trend during the short term
will be one of gradually increasing SW winds and building seas
in advance of a slowly moving cold front. The front will be over
or near the waters on Thursday morning, at which point we will
likely see some loosening of the gradient and a subsequent
decrease in winds and seas during the afternoon. Until then,
though, it is likely that small craft advisory conditions will
be breached on Wednesday or Wednesday night. Expect frequent
period of shower and thunderstorm activity Wednesday and
Wednesday night, with improving conditions on Thursday.

Long term /Friday through Saturday/...

as of 3 pm Monday... Small craft advisory will be in effect on
Thursday just ahead of a cold front that will pinch the
gradient. Within the agitated wind field of the pinched gradient
a strong upper disturbance will traverse the area possibly to
enhance wind gusts. In the wake of this boundary there will be
west winds to round out the period of gradually diminishing
speed. Wave heights will similarly abate somewhat slowly.

Ilm watches/warnings/advisories
Sc... Flash flood watch from 8 am edt this morning through late
tonight for scz017-023-024-032-033-039-053>056.

Beach hazards statement from 7 am edt this morning through this
evening for scz054-056.

Nc... Flash flood watch from 8 am edt this morning through late
tonight for ncz087-096-099-105>110.

Beach hazards statement from 7 am edt this morning through this
evening for ncz106-108.

Marine... Small craft advisory from 2 pm this afternoon to 6 am edt
Wednesday for amz250-252-254-256.

Synopsis... Rek
near term... Shk
short term... Rek
long term... mbb
aviation... Shk
marine... Rek/mbb/shk

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NIWS1 - North Inlet-Winyah Bay Reserve, SC 5 mi63 min SSW 2.9 71°F 1012 hPa70°F
MROS1 - 8661070 - Springmaid Pier, SC 27 mi48 min 1011.3 hPa (-2.2)
41029 - Capers Nearshore (CAP 2) 43 mi100 min W 12 G 16 75°F 76°F1012.1 hPa
FBIS1 - Folly Island, SC 58 mi48 min SSW 8 G 8.9 73°F 1011.4 hPa (-3.2)72°F

Wind History for Springmaid Pier, SC
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown County Airport , SC5 mi53 minN 07.00 miLight Rain68°F68°F100%1011.8 hPa

Wind History from GGE (wind in knots)
Last 24hrS6S4SW3SW5S7SW9W9S5S6S8S10S8S11
1 day agoCalmCalmCalmCalmCalmS4S7SE5E13
2 days agoCalmCalmCalmSW3SW4SW6W4W5SW4S8S8

Tide / Current Tables for Georgetown, Sampit River, South Carolina
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Tue -- 02:27 AM EDT     -0.08 feet Low Tide
Tue -- 04:44 AM EDT     Moonrise
Tue -- 06:11 AM EDT     Sunrise
Tue -- 07:41 AM EDT     3.89 feet High Tide
Tue -- 02:41 PM EDT     -0.57 feet Low Tide
Tue -- 05:53 PM EDT     Moonset
Tue -- 08:10 PM EDT     4.58 feet High Tide
Tue -- 08:16 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Hagley Landing, Waccamaw River, South Carolina
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Hagley Landing
Click for Map
Tue -- 03:11 AM EDT     -0.08 feet Low Tide
Tue -- 04:44 AM EDT     Moonrise
Tue -- 06:11 AM EDT     Sunrise
Tue -- 08:14 AM EDT     3.67 feet High Tide
Tue -- 03:25 PM EDT     -0.57 feet Low Tide
Tue -- 05:53 PM EDT     Moonset
Tue -- 08:15 PM EDT     Sunset
Tue -- 08:43 PM EDT     4.32 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Southeast    EDIT

Wind Forecast for Wilmington, NC (4,6,7,8)
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Ground Weather Radar Station Wilmington, NC
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weather_mapweather_map weather_map

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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.