Tuesday, May21, 2019 L-36.com


Marine Weather and Tides
Port Royal, 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 6:20AMSunset 8:19PM Tuesday May 21, 2019 2:29 PM EDT (18:29 UTC) Moonrise 10:09PMMoonset 7:37AM Illumination 92% 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- 102 Pm Edt Tue May 21 2019
This afternoon..S winds 5 to 10 kt. Seas 2 ft.
Tonight..S winds 5 to 10 kt. Seas 2 ft.
Wed..SE winds 5 to 10 kt. Seas 2 ft.
Wed night..SE winds 10 to 15 kt. Seas 2 to 3 ft.
Thu..SE winds 5 to 10 kt. Seas 2 to 3 ft.
Thu night..S winds 5 to 10 kt. Seas 2 ft.
Fri..SW winds 5 to 10 kt. Seas 2 ft.
Fri night..SW winds 10 kt. Seas 2 ft.
Sat..SW winds 5 to 10 kt. Seas 2 ft.
Sat night..S winds 5 to 10 kt. Seas 2 ft.
AMZ300 102 Pm Edt Tue May 21 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will build over the region this week and will linger into early next week.


7 Day Forecast for Marine Location Near Port Royal, SC
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location: 32.33, -80.47     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 211711
afdchs
area forecast discussion
national weather service charleston sc
111 pm edt Tue may 21 2019

Synopsis
High pressure will build over the region this week and will
linger into early next week.

Near term through tonight
No changes with this update. Cams still hint at some isolated
convection along the sea breeze this afternoon, mainly in the
charleston tri- county area. But it will be hard to get much
given all the dry air in place. Hence, no changes to the pops
for this afternoon. Otherwise, the thinking below remains the
same.

Today: strong upper ridging is forecast to build over the
entire forecast area. Building NVA in the mid levels suggest
sinking air with 500 mb temps also very warm (-6c to -7c). We
think this environment will generally suppress diurnal
convection this afternoon. We have a brief slight chance pop in
the charleston tri-county area this afternoon, otherwise silent
pops along the sea breeze down into ga. The sinking air aloft
and light west flow in the boundary layer into early afternoon
should result in a bit warmer temps today. Highs in the
lower mid 90s should be common away from the beaches and
barrier islands.

Tonight: the center of 500 mb high pressure is forecast to settle
over the forecast area overnight. At the surface a weak backdoor
front is expected to drift through north carolina and perhaps
reach the sc pee dee area late. We expected a few clouds at times
but dry weather. Latest SREF output hints at some inland fog and
stratus but we opted to allow for another look at it later today
before placing any patchy fog in our forecast across inland areas.

Short term Wednesday through Friday
A weak backdoor front will attempt to push into the area on
Wednesday before sfc high pressure prevails along the mid-atlantic
to southeast coasts under a large mid upper lvl ridge of high
pressure centered over the southeast united states. Although a few
showers can not be ruled out within an onshore flow Wednesday
afternoon, warm and dry conditions will likely prevail through the
week as high pressure dominates the overall weather pattern. Given
the setup, highs should warm into the lower 90s inland on Wednesday
and Thursday while a more direct onshore sfc wind limits temps to
the mid upper 80s east of the i-95 corridor. Temps should remain in
the lower 80s along the immediate coast. By Friday, a light
downslope flow will develop across the region, helping push temps
into the middle 90s away from the coast under the persistent ridge
aloft. Overnight lows should also be mild, ranging in the upper
60s lower 70s each night.

Long term Friday night through Tuesday
Hot and dry conditions should prevail this weekend into early next
week as deep layered high pressure remains across the region. A
slight southerly shift of the mid upper lvl ridge of high pressure
will set up a northwest downslope flow across the region, producing
some of the warmest temps across the area so far this year. This
includes warmer conditions along the beaches given the potential for
a pinned seabreeze each day. In general, high temps should peak in
the mid upper 90s away from the coast and in the upper 80s to
potentially 90 degrees at the beaches. However, temps around 100
degrees are expected anywhere west of the i-95 corridor, especially
Sunday and Monday afternoons. The combination of hot temps and sfc
dewpts mixing out to the low mid 60s away from the coast suggests
heat index values upwards to the 100-103 range, mainly west of the i-
95 corridor. However, the duration and peak of the event do not
appear to warrant heat advisories at this time. Although dewpt temps
should remain higher near the coast, temps do not appear to be warm
enough for heat index values above the upper 90s. Low temps will
remain mild each night, generally in the low mid 70s.

Aviation 17z Tuesday through Saturday
18z tafs:VFR.

Extended aviation outlook:VFR conditions are expected at both chs
and sav terminals through late week.

Marine
The pressure pattern through tonight remains on the weak side.

Gradients will continue to be driven by the sea breeze again
this afternoon. A weak backdoor front will sag south over the
carolinas late tonight, probably not reaching the charleston
waters during this time frame. Winds will remain less than 15
kt through tonight with seas 2 to 3 ft.

Wednesday through Sunday: a weak backdoor front will attempt to push
into the area from the north Wednesday, helping produce easterly
winds at or below 10-15 kts. Winds should remain at or below 10-15
kts while turning more south southeast Thursday, then
south southwest this weekend as high pressure remains the dominant
weather feature across the area. Seas could build up to 2-4 ft
Wednesday, but should then gradually subside to 1-3 ft through the
weekend.

Climate
Record high temps for may 27th
station record high year(s)
------- ----------- -------
kchs 98 1989
kcxm 95 1962, 1926
ksav 98 1989, 1962

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term...

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

marine...

climate...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41033 5 mi141 min SW 9.7 G 12 78°F 78°F1014.9 hPa
ACXS1 - ACE Basin Reserve, SC 16 mi104 min S 1 87°F 1015 hPa71°F
FPKG1 - 8670870 - Fort Pulaski, GA 31 mi47 min SSW 5.1 G 8 84°F 78°F1014.9 hPa
FBIS1 - Folly Island, SC 39 mi89 min SSW 11 G 14 80°F 1015.2 hPa (-0.4)76°F
CHTS1 43 mi41 min S 9.9 G 12 83°F 79°F1014.2 hPa

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beaufort County Airport, SC10 mi34 minSSW 47.00 miFair88°F69°F55%1014.2 hPa
Hilton Head Island, Hilton Head Airport, SC14 mi39 minS 810.00 miA Few Clouds86°F75°F70%1014.6 hPa

Wind History from ARW (wind in knots)
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S7S7S10S8S7S6S6SW3SW3SW4S4SW3CalmSW3SW3SW5W7CalmS6SW6S6S5
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2 days agoS6SE7S7S9S9S8
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Tide / Current Tables for Fripp Inlet Bridge, South Carolina
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Fripp Inlet Bridge
Click for Map
Tue -- 04:34 AM EDT     -0.22 feet Low Tide
Tue -- 06:20 AM EDT     Sunrise
Tue -- 08:37 AM EDT     Moonset
Tue -- 10:31 AM EDT     5.99 feet High Tide
Tue -- 04:32 PM EDT     0.08 feet Low Tide
Tue -- 08:16 PM EDT     Sunset
Tue -- 10:58 PM EDT     6.81 feet High Tide
Tue -- 11:08 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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64.62.91.1-0-0.10.72.23.85.25.95.95.242.61.20.20.212.54.15.66.56.8

Tide / Current Tables for Village Creek Cemetery, Morgan River, South Carolina
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Village Creek Cemetery
Click for Map
Tue -- 05:05 AM EDT     -0.22 feet Low Tide
Tue -- 06:20 AM EDT     Sunrise
Tue -- 08:37 AM EDT     Moonset
Tue -- 11:12 AM EDT     6.33 feet High Tide
Tue -- 05:03 PM EDT     0.08 feet Low Tide
Tue -- 08:17 PM EDT     Sunset
Tue -- 11:09 PM EDT     Moonrise
Tue -- 11:39 PM EDT     7.19 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.15.94.22.20.5-0.20.21.43.14.65.86.36.15.13.72.10.70.10.51.73.456.37

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.