Monday, August26, 2019 L-36.com


Marine Weather and Tides
Sullivan's Island, SC

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7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
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Sunrise 6:49AMSunset 7:53PM Monday August 26, 2019 2:49 AM EDT (06:49 UTC) Moonrise 1:26AMMoonset 4:02PM Illumination 19% Phase: Waning Crescent; Moon at 25 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- 1232 Am Edt Mon Aug 26 2019
Rest of tonight..NE winds 10 to 15 kt.
Mon..NE winds 10 to 15 kt.
Mon night..NE winds 5 to 10 kt.
Tue..NE winds 5 kt, becoming se in the afternoon. A chance of showers and tstms in the afternoon.
Tue night..S winds 5 kt. A chance of showers and tstms.
Wed..S winds 5 kt. A chance of showers and tstms.
Wed night..S winds 5 kt, becoming W after midnight. A chance of showers and tstms.
Thu..NE winds 5 to 10 kt. A chance of showers and tstms.
Thu night..E winds 5 to 10 kt. A chance of showers and tstms.
Fri..NE winds 5 to 10 kt. A chance of showers and tstms.
Fri night..E winds 5 to 10 kt. A chance of showers and tstms. Mariners are reminded that winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 85 degrees.
AMZ300 1232 Am Edt Mon Aug 26 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail inland, while a stationary front lingers south and east of the area early this week. Meanwhile, low pressure is expected to pass well off the southeast coast. A cold front will impact the region later in the week.


7 Day Forecast for Marine Location Near Sullivan's Island, SC
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location: 32.77, -79.91     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 260514
afdchs
area forecast discussion
national weather service charleston sc
114 am edt Mon aug 26 2019

Synopsis
High pressure will prevail inland, while a stationary front
lingers south and east of the area early this week. Meanwhile,
low pressure is expected to pass well off the southeast coast.

A cold front will impact the region later in the week.

Near term until 6 am this morning
Benign weather conditions overnight, with a high pressure wedge
firmly in place, while a broad and elongated low is found
several hundred miles east of the local area in the atlantic.

Meanwhile, a stationary front will linger near the georgia and
florida borders. Sky conditions will range between partly cloudy
and mostly cloudy, a mix of cirriform clouds and stratocumulus.

A northeast synoptic flow within the wedge will allow for temps
to fall to the upper 60s and lower 70s, with even a few places
in the francis marion in the mid 60s.

Short term 6 am this morning through Wednesday
Monday: a cooler wedge-type pattern will persist across southeast
south carolina and much of southeast georgia behind a stalled front
positioned south of the area. Precip chances will be quite low
across southeast south carolina within a prevailing northeast sfc
wind. Further south, sfc winds could be more directly onshore,
helping moisture linger north of the front along near the altamaha
river. The effects of the wedge will also not be as strong south,
allowing temps to warm into the mid to perhaps upper 80s. Marginal
instability and weak isentropic lift suggest few to scattered
showers during the morning, then perhaps a few thunderstorms during
mid late afternoon near the altamaha river. Any convection should
wane dissipate during early overnight hours. Low temps should remain
cooler, dipping into the upper 60s north and away from the coast in
southeast south carolina to low mid 70s south and closer to the
coast in southeast georgia.

Tuesday: a quasi-stationary front should remain just south of the
region, but a wedge-like pattern should weaken across the southeast
united states in advance of a mid upper lvl trough of low pressure
and associated sfc cold front approaching the region from the west.

A southwest sfc flow ahead of the front will advect deeper moisture
to the region while mid upper lvl forcing arrives late. Given the
anticipated pattern, scattered to numerous showers and or
thunderstorms are possible later in the day, highest chances west of
i-95. Temps should warm a few degrees more than the previous day
with highs generally ranging in the mid upper 80s. Some locations
could experience temps in the lower 90s well inland in southeast
georgia.

Wednesday: a larger mid upper lvl trough of low pressure will shift
across the midwest and toward the mid-atlantic states, helping push
a sfc cold front into the area. The pattern should support the
wettest conditions of the week as the front encounters deep moisture
characterized by pwats 2.25-2.50 inches and modest instability. At
this time, chances of severe weather remain fairly low, but can not
be ruled out during near fropa. Regardless, scattered to numerous
showers and thunderstorms are possible across much of the area. High
temps should warm into the upper 80s to around 90 degrees.

Long term Wednesday night through Sunday
A cold front is expected to pass offshore Wednesday night or
Thursday which will then linger in the vicinity through late week as
high pressure builds in from the west. Models vary in regards to
timing of frontal passage, with the euro the quicker solution. This
makes for a lower confidence rainfall forecast as rain chances will
hinge on frontal position. Overall, went with consensus pops of
around 40% during the daytime hours. Temperatures will be
seasonable.

Aviation 06z Monday through Friday
Vfr with prevail with the 06z forecast for ksav and kchs,
although there could be a period of MVFR ceilings a couple of
hours either side of daybreak as moisture gets trapped beneath
the inversion.

Extended aviation outlook: brief flight restrictions are then
possible with showers thunderstorms on Tuesday, then again on
Wednesday with showers thunderstorms along a passing cold front.

Marine
Overnight: a strong wedge of high pressure will persist inland
and to our north, while a stationary front is generally to our
south, and finally a low is to our east. The interaction between
all of these features has led to an tight surface pressure
gradient, which is causing elevated winds. We are continuing the
small craft advisory for amz350 due to wind gusts around 25 kt.

Elsewhere, gusts should be around 20 kt. Additionally, seas
have responded to these winds by building. Seas up to 6 ft are
forecasted for amz374, so we also have a small craft advisory
here.

Monday through Friday: high pressure will prevail inland while
tropical low pressure tracks north northeast, well east of coastal
waters offshore. The pattern will initially favor a tightened
pressure gradient over coastal waters Monday with north northeast
winds topping out around 15-20 kts and seas building up to 4-6 ft,
highest across offshore georgia waters. For this reason, a small
craft advisory will continue across offshore georgia waters early
Monday before the tropical low departs north northeast of the
region. Winds will weaken considerably by Tuesday, becoming onshore
and remaining 10 kts or less. By Wednesday, winds should become
more offshore ahead of a cold front approaching the from the west.

The front should shift over coastal waters Thursday, then linger in
the vicinity through late week. At this time, winds and seas are
expected to remain below small craft advisory criteria mid to late
week.

Rip currents: increasing east northeast winds could contribute to an
enhanced risk of rip currents on area beaches early week, especially
if tropical low pressure intensifies while tracking well offshore.

Tides coastal flooding
Elevated tide levels are expected this week with the approach of the
lunar perigee and new moon this Friday. Coastal flooding will be
possible during the evening high tide cycles, starting as early as
Monday, but more likely during the latter half of the week. In
addition, there is the potential for some heavy rain around the
times of high tide which could exacerbate any flooding issues.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Small craft advisory until noon edt today for amz374.

Small craft advisory until 6 am edt early this morning for
amz350.

Near term...

short term...

long term...

aviation...

marine...

tides coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHTS1 1 mi50 min NNW 6 G 8.9 71°F 84°F1016.7 hPa (-1.3)
FBIS1 - Folly Island, SC 6 mi50 min N 13 G 14 71°F 1017 hPa (-1.0)63°F
41029 - Capers Nearshore (CAP 2) 15 mi42 min NE 16 G 19 73°F 84°F1016.3 hPa
ACXS1 - ACE Basin Reserve, SC 32 mi65 min N 1.9 69°F 1017 hPa64°F
41033 43 mi42 min ENE 16 G 19 75°F 85°F1016.4 hPa
41004 - EDISTO - 41 NM Southeast of Charleston, SC 47 mi30 min NNE 18 G 21 78°F 83°F1015 hPa72°F

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC7 mi3.9 hrsN 7 G 1510.00 miPartly Cloudy72°F66°F83%1017.9 hPa
Mount Pleasant Regional-Faison Field, SC11 mi3.9 hrsVar 510.00 miMostly Cloudy70°F66°F88%1017.6 hPa
Charleston, Charleston Air Force Base, SC12 mi3.9 hrsNNE 910.00 miPartly Cloudy70°F63°F79%1018 hPa

Link to 5 minute data for KJZI

Wind History from JZI (wind in knots)
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1 day agoCalmCalmCalmN6N5N5N4N6N5N4CalmNE3E5E6E5
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2 days agoCalmCalmCalmCalmCalmCalmW6W5W5SE8S8SE8S10S8SE7S7SE5CalmCalmCalmCalmCalmCalmNW5

Tide / Current Tables for Charleston, South Carolina
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Charleston
Click for Map
Mon -- 02:25 AM EDT     Moonrise
Mon -- 04:35 AM EDT     4.82 feet High Tide
Mon -- 06:50 AM EDT     Sunrise
Mon -- 10:56 AM EDT     0.42 feet Low Tide
Mon -- 05:01 PM EDT     Moonset
Mon -- 05:17 PM EDT     6.12 feet High Tide
Mon -- 07:52 PM EDT     Sunset
Mon -- 11:48 PM EDT     0.83 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.62.53.54.34.74.84.33.52.41.40.70.40.81.93.44.75.66.165.34.22.91.81.1

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Mon -- 01:33 AM EDT     1.26 knots Max Flood
Mon -- 02:25 AM EDT     Moonrise
Mon -- 04:46 AM EDT     -0.00 knots Slack
Mon -- 06:50 AM EDT     Sunrise
Mon -- 08:24 AM EDT     -1.96 knots Max Ebb
Mon -- 11:21 AM EDT     0.00 knots Slack
Mon -- 02:00 PM EDT     1.78 knots Max Flood
Mon -- 05:01 PM EDT     Moonset
Mon -- 05:48 PM EDT     -0.00 knots Slack
Mon -- 07:51 PM EDT     Sunset
Mon -- 09:14 PM EDT     -2.40 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.51.11.20.80.4-0.1-0.9-1.5-1.9-1.9-1.3-0.30.61.41.81.51.10.6-0.2-1.1-2-2.4-2.2-1.4

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 (2,6,7,8)
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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.