Monday, December11, 2017 L-36.com


Marine Weather and Tides
Awendaw, SC

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.

Sunrise 7:11AMSunset 5:15PM Monday December 11, 2017 12:31 AM EST (05:31 UTC) Moonrise 12:59AMMoonset 1:30PM Illumination 47% Phase: Third Quarter Moon; Moon at 22 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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AMZ330 Charleston Harbor- 945 Pm Est Sun Dec 10 2017
Tonight..W winds 5 to 10 kt.
Mon..W winds 5 to 10 kt.
Mon night..SW winds 10 kt.
Tue..W winds 10 to 15 kt.
Tue night..NW winds 10 to 15 kt.
Wed..NW winds 5 to 10 kt.
Wed night..W winds 5 kt.
Thu..SW winds 5 to 10 kt.
Thu night..SW winds 10 kt.
Fri..W winds 10 kt. A slight chance of showers.
Fri night..NW winds 5 to 10 kt. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 56 degrees.
AMZ300 945 Pm Est Sun Dec 10 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will linger over the region through early Tuesday. A dry cold front will sweep across the region Tuesday afternoon, followed by a cool and dry air mass into late week. A weak cold front will then push through the area on Friday.

7 Day Forecast for Marine Location Near Awendaw, SC
   Hourly   EDIT   Help
location: 32.94, -79.68     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 110249
afdchs
area forecast discussion
national weather service charleston sc
949 pm est Sun dec 10 2017

Synopsis
High pressure will linger over the region through early
Tuesday. A dry cold front will sweep across the region Tuesday
afternoon, followed by a cool and dry air mass into late week.

A weak cold front will then push through the area on Friday.

Near term until 6 am Monday morning
Hourly temps can be difficult to pin down due to very minor
"puffs" of wind will cause temps to rise several degrees,
whereas when winds go calm temps will hold steady or continue
their slow decline. Overall the forecast is on track. Keep in
mind that the NWS charleston frost freeze program ended for the
season on november 30th, and will restart again on march 1,
2018.

Clear skies and cold weather will again prevail, with yet
another night of sub-freezing temps to develop across much of
the region near and inland from us-17. However, since the
geostrophic winds are as high as 15-20 kt, ideal radiational
cooling will not occur. Even so, expect lows a good 8-10f below
normal.

Short term 6 am Monday morning through Wednesday
Monday, h85 winds will remain NW and downsloping across the
foothills of the carolinas around daybreak. However, winds are
forecast to back from the SW during the daylight hours. A shallow
sfc lee trough is expected to persist through the daylight hours
Monday. The combination of the lee trough to the west and high
pressure to the south should support SW winds over the cwa. The
return flow is expected to result in waa, with 1000mb-850mb
thickness increasing by 10m from 12z-0z. High temperatures in the
mid to upper 50s should be common, remaining around 5 degrees below
normal.

Tuesday, short range models indicate that a dry cold front will push
over the southern appalachians during the early morning hours. The
cold front is expected to slide over the forecast area during the
afternoon hours, resulting in winds to shift from SW to NW and
become gusty. High temperatures in the upper 50s to near 60 should
be reached during the early afternoon, then gradually cool. Forecast
soundings only hint at thin cirrus level moisture associated with
the front. Tuesday night, h85 CAA lowers temps over kchs from 0c at
0z to -8c at 12z. Low temperatures should easily fall below freezing
inland to near freezing along the coast.

Wednesday, sfc NW are forecast to continue through the morning
hours, then shifting from the SW with speeds 5 kts or less. Nam12
indicates that h85 temps will recover steadily during the day,
especially across SE ga. Using a blend of mos, high temperatures are
forecast to range from the low 50s within the altamaha river valley
to the upper 40s north.

Long term Wednesday night through Sunday
Dry high pressure will prevail over the southeast into late week
with gradually modifying temps under sunny skies well in advance of
a trough of low pressure digging over the central united states and
midwest. In general, highs should range in the mid upper 50s
Thursday, then upper 50s lower 60s Friday. A cold front could bring
a few showers to the area Friday afternoon evening before dry high
pressure prevails for the remainder of the weekend. Trends indicate
near normal temps late weekend into early next week ahead of another
cold front approaching the southeast.

Aviation 03z Monday through Friday
Vfr at kchs ksav through 00z Tuesday.

Extended aviation outlook:VFR conditions are forecast to continue
across the terminals through late this week.

Marine
Tonight: high pressure centered in southern texas will extend
east across the local waters. There is decent mixing that occurs
to keep westerly winds as high as 12-18 kt in the atlantic and
around 10 kt in charleston harbor. Seas will be held to no more
than 2-4 ft within the offshore fetch.

The region is forecast to remain between high pressure to the south
and east and a lee trough over the western carolinas on Monday. This
pattern will support steady SW winds. Wave heights are forecast to
range from 1-2 feet within 20 nm to 2-3 feet closer to 60 nm.

A dry cold front is expected to sweep across the marine zones late
Tuesday afternoon into the evening. Winds in the wake of the front
should increase from the nw, gusts are forecast to reach 25-30 kts
Tuesday night. Seas will increase to 4-6 feet across the outer ga
waters Tuesday night into Wednesday. Small craft advisories will
likely be needed outside of the chs harbor.

Sfc high pressure should return to the region Wednesday and Thursday,
providing conditions below small craft advisory criteria.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term...

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

marine...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41029 - Capers Nearshore (CAP 2) 10 mi83 min W 16 G 21 46°F 1023.7 hPa
CHTS1 17 mi43 min WSW 4.1 G 7 42°F 56°F1024.3 hPa
FBIS1 - Folly Island, SC 21 mi31 min WSW 4.1 G 6 42°F 1024.8 hPa (+0.0)35°F
NIWS1 - North Inlet-Winyah Bay Reserve, SC 38 mi106 min W 4.1 38°F 1024 hPa32°F
41004 - EDISTO - 41 NM Southeast of Charleston, SC 43 mi41 min W 14 G 21 74°F3 ft1023.5 hPa
ACXS1 - ACE Basin Reserve, SC 49 mi106 min Calm 37°F 1024 hPa35°F

Wind History for Charleston, SC
(wind in knots)    EDIT      (on/off)   Help
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Last
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N9
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G14

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mount Pleasant Regional-Faison Field, SC6 mi56 minN 010.00 miFair36°F33°F93%1024.4 hPa
Charleston, Charleston Air Force Base, SC19 mi95 minWSW 410.00 miFair37°F32°F82%1024.2 hPa
Charleston Executive Airport, SC24 mi56 minN 010.00 miFair37°F32°F81%1024.7 hPa

Wind History from LRO (wind in knots)
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Last 24hrW6W6NW6NW7W4W4CalmCalmNW5NW6NW3W4CalmW5SW6S7S4CalmCalmCalmCalmS4CalmSW3
1 day agoN5CalmN5NW6NW7NW11
G16
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NW7NW6NW7W6W8
G14
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2 days agoN4N4CalmN6N6NW7N6N5NE6NE8N7N7N7N7N6
G16
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N6N8NE3N8N6
G14
N7NW10N6

Tide / Current Tables for Moores Landing, ICWW, Sewee Bay, South Carolina
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Moores Landing
Click for Map
Mon -- 12:58 AM EST     Moonrise
Mon -- 02:39 AM EST     5.08 feet High Tide
Mon -- 07:11 AM EST     Sunrise
Mon -- 08:34 AM EST     0.50 feet Low Tide
Mon -- 01:30 PM EST     Moonset
Mon -- 02:54 PM EST     5.13 feet High Tide
Mon -- 05:12 PM EST     Sunset
Mon -- 09:06 PM EST     0.28 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.34.34.954.53.62.41.30.60.61.12.13.24.24.95.14.83.92.81.70.70.30.51.3

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Mon -- 12:59 AM EST     Moonrise
Mon -- 02:51 AM EST     -0.00 knots Slack
Mon -- 05:59 AM EST     -2.12 knots Max Ebb
Mon -- 07:11 AM EST     Sunrise
Mon -- 09:03 AM EST     0.00 knots Slack
Mon -- 11:09 AM EST     1.32 knots Max Flood
Mon -- 01:31 PM EST     Moonset
Mon -- 03:05 PM EST     -0.00 knots Slack
Mon -- 05:13 PM EST     Sunset
Mon -- 06:24 PM EST     -2.11 knots Max Ebb
Mon -- 09:35 PM EST     0.00 knots Slack
Mon -- 11:52 PM EST     1.29 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.31.20.7-0.1-1-1.8-2.1-1.8-1.1-0.10.91.31.21.10.80.1-0.8-1.5-2.1-2-1.5-0.60.41.1

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

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Charleston, SC (0,6,7,8)
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Ground Weather Radar Station Charleston, SC
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weather_mapweather_map weather_map

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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.