Monday, March25, 2019 L-36.com


Marine Weather and Tides
Hollywood, SC

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 7:15AMSunset 7:35PM Monday March 25, 2019 1:33 AM EDT (05:33 UTC) Moonrise 11:44PMMoonset 9:36AM Illumination 82% Phase: Waning Gibbous; Moon at 19 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- 931 Pm Edt Sun Mar 24 2019
Tonight..S winds 5 kt.
Mon..SW winds 5 to 10 kt, increasing to 15 kt with gusts to 20 kt in the afternoon. A slight chance of showers in the afternoon.
Mon night..SW winds 10 to 15 kt with gusts to 20 kt, becoming nw 5 to 10 kt after midnight. A slight chance of tstms. A chance of showers in the evening, then showers likely after midnight.
Tue..N winds 10 to 15 kt, becoming ne 15 to 20 kt in the afternoon. Waves 1 to 2 ft. A chance of showers.
Tue night..NE winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. A chance of showers, mainly in the evening.
Wed..NE winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft.
Wed night..NE winds 15 to 20 kt. Waves 1 to 2 ft.
Thu..NE winds 10 to 15 kt.
Thu night..NE winds 10 to 15 kt.
Fri..NE winds 10 kt.
Fri night..SE winds 5 to 10 kt. Mariners are reminded that winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 61 degrees.
AMZ300 931 Pm Edt Sun Mar 24 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will persist through early Monday. Low pressure will cross the region Monday night followed by a strong cold front Tuesday. High pressure will build in from the north during mid week and then persist from late week into Saturday.


7 Day Forecast for Marine Location Near Hollywood, SC
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location: 32.73, -80.07     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 250133
afdchs
area forecast discussion
national weather service charleston sc
933 pm edt Sun mar 24 2019

Synopsis
High pressure will persist through early Monday. Low pressure
will cross the region Monday night followed by a strong cold
front Tuesday. High pressure will build in from the north
during mid week and then persist from late week into Saturday.

Near term until 6 am Monday morning
Forecast looks good and matches current trends well. No changes
are needed at this time.

The region will remain along the western flanks of subtropical
high pressure tonight. Low-level moisture will slowly increase
from the south, but should remain shallow enough to support
only shallow ground fog. No meaningful impacts are anticipated.

A band of high clouds will move from west-east this evening,
clearing the middle south carolina coast after midnight.

Stratocumulus will develop across northeast florida and far
southeast georgia after 3 am, and approach portions of mcintosh
and long counties by daybreak. It will be a considerably warmer
night with lows ranging from the lower 50s inland to the upper
50s near 60 along the beaches.

Short term 6 am Monday morning through Wednesday
Monday: high pressure offshore will continue to pump a SW to s
return flow into the forecast area. This should result in even
milder temps with surface dewpoints mostly in the lower to mid 50s.

Most of the clouds early will be high level clouds with moisture
advection at 850 mb likely to result in scattered cumulus fields
into early-mid afternoon. Temps are expected to warm to the mid and
upper 70s with a few spots reaching 80 degrees inland. A few spotty
showers may develop in the afternoon along the sc resultant sea
breeze but the GFS was an outlier with it's amount of convective qpf
across the chs tri-county. Late in the day, an approaching upper
wave will dig into the southeast states with showers and isolated
tstms developing upstream. This activity is expected to reach our
inland areas closer to sunset.

Monday night and Tuesday: increasing deeper level moisture and
upper forcing is expected to result in scattered numerous showers
and perhaps a few tstms into our region Monday night. Isolated to
scattered showers may persist on Tuesday, especially ga zones.

Our highest pops in the 60 percent range are along north of
i-16. Overall instability is not impressive and surface dew
points in the 50s suggest our potential for strong thunder is
low, especially since much of convection will occur after dusk.

Qpf amounts will also tend to be lower-end less than 1 4 inch.

Low pressure off the carolina coast early Tuesday will move away,
allowing a strong backdoor cold front to drop into the area from the
north. Cooler northeast flow will increase from N to S across the
region Tuesday with temps struggling to get into the 60s if clouds
tend to hang in all day which easily could happen. Shower chances
appear a bit higher across southern ga where a secondary short wave
will swing through late Tuesday and Tuesday night.

Wednesday: another coastal low will develop offshore of the florida
coast and it appears wet weather will reside off our coast and down
over florida with this synoptic setup. Our region will see a strong
wedge of high pressure extending across ga and the carolinas.

Skies should become partly sunny by the afternoon with highs
only in the lower 60s north to mid 60s inland south ga. Gusty
northeast winds should persist along the beaches and barrier
islands most all day.

Long term Wednesday night through Sunday
Dry high pressure will gradually move offshore, bringing a
return to the warm temperatures. Next weekend looks particularly
warm with highs reaching 80f or higher in many spots. The next
front could approach late in the weekend.

Aviation 02z Monday through Friday
Vfr. Shallow ground fog could impact both kchs and ksav prior to
daybreak, but no meaningful impacts are expected. There is a
chance vsbys could vary greatly at the ksav ASOS if a fog bank
settles near the sensor during non-observer augmented hours.

Extended aviation outlook: flight restrictions possible Monday
night through Tuesday night.

Marine
Tonight: E SE winds to start will turn toward the S SW at 5-15
kt later on as high pressure retreats offshore and low pressure
approaches from the west. Seas of 2-3 feet are expected.

Monday, s-sw flow could become gusty in the chs harbor during
the afternoon with gusts to 20 kt. The main marine concern with
a strong backdoor cold front moving south through the waters
with significant northeast surging and building seas in it's
wake. A secondary low moving to the south Tuesday night through
Wednesday will enhance the gradient even further. Gale
watches warnings may be required for some of our waters given
the potential for enhanced gradients and periods of 40-50 kt low
level geostrophic flow. We expect scas and or possible gale
watches to go up sometime on Monday as this event unfolds.

Rip currents: there will be enhanced risk for rip currents
beginning Tuesday as elevated northeast winds and swell impact
the beaches.

Tides coastal flooding
Between strong high pressure building from the north and low
pressure developing off the coast, strong northeast winds will
create elevated tide levels along the coast Tuesday through
Thursday. While astronomical factors do not favor tidal
flooding, probabilistic guidance depicts a low chance for minor
salt water flooding, especially Wednesday. We will continue to
assess this scenario during the next several days.

Equipment
The kclx radar remains out of service. Repairs are expected to
be completed Monday.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHTS1 9 mi39 min 63°F 61°F1022.4 hPa
FBIS1 - Folly Island, SC 10 mi33 min S 8 G 8.9 62°F 1022.7 hPa (-0.8)58°F
41029 - Capers Nearshore (CAP 2) 24 mi85 min SSW 7.8 G 9.7 63°F 60°F1022.8 hPa
ACXS1 - ACE Basin Reserve, SC 24 mi108 min Calm 60°F 1023 hPa57°F
41033 36 mi85 min SSE 5.8 G 9.7 63°F 61°F1022.1 hPa
41004 - EDISTO - 41 NM Southeast of Charleston, SC 54 mi33 min SSW 14 G 16 70°F 71°F1023 hPa (-0.4)

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC4 mi38 minS 410.00 miPartly Cloudy59°F55°F88%1022.3 hPa
Charleston, Charleston Air Force Base, SC13 mi37 minS 410.00 miPartly Cloudy56°F51°F84%1022.1 hPa
Mount Pleasant Regional-Faison Field, SC19 mi38 minS 410.00 miFair57°F55°F94%1022.3 hPa

Wind History from JZI (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmE7E5SE8SE75E7SE6SE7SE5SE4S4CalmS5CalmCalmS4
1 day agoW5W7N4NW4CalmNE4NE8NE11NE9N114
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2 days agoCalmCalmCalmCalmW6NW6NW6W10NW8W8W8SW11W11
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Tide / Current Tables for Church Creek bridge, Wadmalaw River, South Carolina
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Church Creek bridge
Click for Map
Mon -- 02:03 AM EDT     7.80 feet High Tide
Mon -- 07:11 AM EDT     -0.08 feet Low Tide
Mon -- 07:17 AM EDT     Sunrise
Mon -- 10:36 AM EDT     Moonset
Mon -- 02:20 PM EDT     6.60 feet High Tide
Mon -- 07:21 PM EDT     0.05 feet Low Tide
Mon -- 07:35 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.57.47.87.25.43.11-00.21.22.645.26.16.66.353.11.20.10.21.12.43.9

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Mon -- 12:33 AM EDT     -0.00 knots Slack
Mon -- 03:43 AM EDT     -2.70 knots Max Ebb
Mon -- 06:47 AM EDT     0.00 knots Slack
Mon -- 07:16 AM EDT     Sunrise
Mon -- 08:59 AM EDT     1.67 knots Max Flood
Mon -- 10:35 AM EDT     Moonset
Mon -- 12:39 PM EDT     -0.00 knots Slack
Mon -- 03:54 PM EDT     -2.07 knots Max Ebb
Mon -- 06:59 PM EDT     0.00 knots Slack
Mon -- 07:34 PM EDT     Sunset
Mon -- 09:26 PM EDT     1.55 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.6-0.5-1.7-2.5-2.7-2-10.31.31.71.41.10.5-0.3-1.2-1.8-2.1-1.7-0.900.91.51.51.3

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Southeast    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 (1,6,7,8)
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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.