Friday, February22, 2019 L-36.com


Marine Weather and Tides
Wilmington Island, GA

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 6:57AMSunset 6:17PM Friday February 22, 2019 11:45 AM EST (16:45 UTC) Moonrise 9:54PMMoonset 9:14AM Illumination 89% Phase: Waning Gibbous; Moon at 18 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
    EDIT      (on/off)   Help
AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 1013 Am Est Fri Feb 22 2019
.dense fog advisory in effect until 4 pm est this afternoon...
Rest of today..S winds 5 kt, increasing to 10 kt late. Seas 2 to 3 ft. Areas of dense fog. Vsby 1/4 nm or less.
Tonight..E winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers.
Sat..E winds 10 kt. Seas 3 ft. A slight chance of showers.
Sat night..SE winds 10 kt, becoming S after midnight. Seas 3 to 4 ft. A chance of showers.
Sun..SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. A slight chance of showers in the morning, then showers likely in the afternoon.
Sun night..NW winds 10 to 15 kt. Seas 3 ft.
Mon..NE winds 10 to 15 kt. Seas 3 ft.
Mon night..E winds 10 to 15 kt. Seas 3 ft.
Tue..E winds 10 kt. Seas 3 to 4 ft.
Tue night..E winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers.
AMZ300 1013 Am Est Fri Feb 22 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A backdoor cold front will slide south across the area through this evening, then shift back north as a warm front late Saturday and and Saturday night. A cold front will then move through Sunday followed by high pressure into mid week. Low pressure will then likely affect the area late next week.


7 Day Forecast for Marine Location Near Wilmington Island, GA
   Hourly   EDIT   Help
location: 32, -81     debug


Area Discussion for - Charleston, SC
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 kchs 221558
afdchs
area forecast discussion
national weather service charleston sc
1058 am est Fri feb 22 2019

Synopsis
A backdoor cold front will slide south across the area through
this evening, then shift back north as a warm front late
Saturday and and Saturday night. A cold front will then move
through Sunday followed by high pressure into mid week. Low
pressure will then likely affect the area late next week.

Near term through tonight
Today: aloft, a large ridge of high pressure centered over the
western atlantic will extend over the southeast united states for
much of the day in advance of a trough of low pressure advancing
over the central united states. At the sfc, a back-door cold front
will advance south into the area late morning and afternoon, likely
shifting south of the region by this evening. Given the setup, the
main issues for today will be lingering fog at the coast and how
warm temps are able to reach before the backdoor front shifts
through the area.

Recent obs and webcams indicate fog that had developed overnight has
quickly dissipated late this morning with the only some lingering
patchy to areas of fog along the immediate coast. Fog will likely
continue to dissipate over the next hour or two over land, but
should persist for a few hours longer offshore. Satellite imagery
and sfc obs indicate the backdoor front is currently pushing through
the tri-county with a well defined wind shift and broken to overcast
stratus in its wake. Ahead of the front, temps are expected to warm
quickly with 1000-850mb thickness levels and soundings suggesting
temps that reach the lower 70s across southeast south carolina and
upper 70s lower 80s across southeast georgia. However, expect high
temps to be short-lived across southeast south carolina as the front
pushes through the region. Further south, temps will stay warm
through mid afternoon, but will also show a quicker cooling trend
mid to late afternoon as the front progresses towards the altamaha
river. In regards to precip today, a few showers are possible with
isentropic lift over the southward advancing front, but coverage
should be limited to northern areas and remain light.

Tonight: high pressure will continue to wedge south over the area
with some low clouds likely limiting overall cooling potential
despite a northerly sfc wind. However, a notable temp gradient is
expected across the area with coolest temps north to warmest temps
south. In general, lows will range in the low-mid 50s across
southeast south carolina and upper 50s lower 60s across southeast
georgia.

Short term Saturday through Monday
Moderate to high confidence this period. Weak high pressure wedging
is likely to give way to a warm front later Saturday and Saturday
night before a cold front moves through Sunday. Cooler high pressure
will then move in for Sunday night and Monday.

Some showers are expected Saturday and Saturday night with the warm
frontal passage but not much rain is likely. A better chance of rain
is then expected Sunday with some higher amounts, although mainly
less than a quarter of an inch. Can't completely rule out a few
storms but chances appear too low to mention at this time given the
generally weak instability. Lastly, fog could develop Saturday night
and or push inland from the atlantic into Sunday.

Temperatures will likely stay above normal through the period, with
the warmest temperatures on Sunday when record highs high mins are
possible depending on the timing of the cold front.

Long term Monday night through Thursday
Moderate to high confidence through Tuesday with low confidence
thereafter. Dry high pressure will likely persist through at least
Tuesday before a coastal trough and or upper disturbance possibly
bring a chance of rain back to the forecast through mid week and
eventually a low pressure system later in the week. So chances are
pretty good that at least a portion of the mid-late week period will
be unsettled but timing and rain amounts are quite uncertain.

Temperatures should be near to above normal through at least
Wednesday before possibly dropping below normal.

Aviation 16z Friday through Tuesday
At chs, MVFR to ifr CIGS are likely late morning and afternoon
as a backdoor cold front shifts by the terminal with low clouds
in it's wake. It's possible MVFR ifr could linger through much
of the day and overnight as high pressure wedges over the
region. At sav,VFR conditions will persist through much of the
afternoon evening, but MVFR or possibly lower CIGS should return
as the front arrives during the evening. Overnight, ifr cigs
will likely prevail into 12z Saturday.

Extended aviation outlook: restrictions likely Saturday into Sunday
afternoon at kchs ksav. Strong winds also possible Sunday. More
restrictions possible toward the middle of next week.

Marine
Today: sfc observations, web cams and satellite imagery indicate
areas to widespread sea fog across the shelf waters. Sea fog
will continue for the next couple hours across south carolina
marine zones until a back door front slides south across the
waters late this morning and afternoon. Based on the timing of
the front, a dense fog advisory is in effect for the south
carolina nearshore waters until 1 pm and for nearshore georgia
until 4 pm. In the wake of the front, winds will shift and
strengthen from the ne. Seas should be no higher than 2-3 ft
within 20 nm and 3-4 ft beyond 20 nm.

Tonight: high pressure will strengthen following the passage of the
cold front, resulting in a 2 mb pressure gradient. NE winds are
forecast to strengthen to 15 to 20 kt across amz350 with seas
building to 4 to 5 ft this evening. At this time, conditions are
expected to remain below small craft advisory levels. The case for
fog tonight is low given NE flow and dewpoints falling into the
50s.

Saturday through Wednesday: a warm front will move north through the
area later Saturday and Saturday night with a cold front to move
through later Sunday. Conditions could reach marginal advisory
levels near the gulf stream Sunday and then again late in the
period. Otherwise, some dense sea fog could develop Saturday in the
ga waters and then across the sc waters Saturday night into Sunday
until the cold front passes.

Tides coastal flooding
It's not out of the question that we could reach coastal flood
advisory levels at charleston harbor with the high tide this
evening. The 5.9 ft mllw astronomical tide would only require a
1.1 ft anomaly which is quite possible based on the latest
forecast for 15-20 kt NE winds along the charleston county
coast.

Climate
Record highs for february 24...

kchs: 81 2017 and previous
kcxm: 81 1930
ksav: 86 2012
record high mins for february 24...

kchs: 60 1992 and previous
kcxm: 63 2018
ksav: 64 1980

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Dense fog advisory until 1 pm est this afternoon for amz350-
352.

Dense fog advisory until 4 pm est this afternoon for amz354.

Near term... Dpb
short term... Rjb
long term... Rjb
aviation... Dpb rjb
marine... Dpb rjb
tides coastal flooding...

climate...



Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Wind History for Fort Pulaski, GA
(wind in knots)    EDIT      (on/off)   Help
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
-12
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
Last
24hr
E4
E3
E6
SE4
SE5
SE5
SE7
G11
S3
G7
SW2
SE5
SE5
G8
SW1
SE2
S3
--
SE1
S3
S4
G7
S2
S3
SW4
SW4
SW3
1 day
ago
N6
N7
G10
N4
E3
NE1
--
N5
E5
E4
E5
NE6
E7
E6
E5
NE3
NE3
N1
SE3
E4
E3
NE3
NE1
W2
SE1
2 days
ago
NE16
G21
NE16
G21
NE16
G20
NE13
NE16
G20
NE19
G24
NE21
G26
NE21
G29
NE14
G17
NE16
NE14
G18
NE14
G20
NE17
G23
NE20
G27
NE15
G21
NE17
G24
NE22
G28
NE22
G29
NE15
G21
NE17
G23
NE8
G11
NE7
NE11
G14
NE5

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hunter U. S. Army Airfield, GA8 mi49 minWSW 310.00 miFair79°F77°F96%1021.6 hPa
Savannah-Hilton Head International Airport, GA14 mi52 minW 510.00 miA Few Clouds79°F64°F60%1021.9 hPa
Hilton Head Island, Hilton Head Airport, SC22 mi55 minWSW 410.00 miFair77°F66°F69%1022.3 hPa

Wind History from SVN (wind in knots)
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
Last 24hrW6CalmSW6E6SE4SE7SE6SE3SE6CalmCalmE3CalmCalmCalmCalmCalmCalm--CalmCalmSW3SW4SW3
1 day agoN4NE3N3NE3CalmNE3CalmCalmN3N4E4E5CalmCalmN3CalmE3CalmCalmCalmCalmCalmCalm3
2 days agoNE12
G16
NE9NE10
G19
NE9
G16
NE9
G15
NE7
G16
N8NE6N9
G15
N8
G17
NE7NE10
G16
NE7NE8NE8NE11
G15
NE8NE6NE7NE7NE6N4--NW4

Tide / Current Tables for Savannah Sheraton Resort Hotel, Wilmington River, Georgia
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Savannah Sheraton Resort Hotel
Click for Map
Fri -- 04:13 AM EST     -1.83 feet Low Tide
Fri -- 06:59 AM EST     Sunrise
Fri -- 09:13 AM EST     Moonset
Fri -- 10:22 AM EST     9.08 feet High Tide
Fri -- 04:34 PM EST     -1.48 feet Low Tide
Fri -- 06:16 PM EST     Sunset
Fri -- 09:53 PM EST     Moonrise
Fri -- 10:55 PM EST     8.77 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
6.94.61.9-0.5-1.8-1.30.63.36898.87.65.52.90.4-1.2-1.302.34.86.98.38.8

Tide / Current Tables for Savannah River Entrance, Georgia Current (2) (expired 1999-12-31)
   EDIT      (on/off)   Help   One Week of Data
Savannah River Entrance
Click for Map
Fri -- 02:13 AM EST     -3.19 knots Max Ebb
Fri -- 05:32 AM EST     0.01 knots Slack
Fri -- 06:58 AM EST     Sunrise
Fri -- 08:02 AM EST     2.25 knots Max Flood
Fri -- 09:13 AM EST     Moonset
Fri -- 11:11 AM EST     -0.00 knots Slack
Fri -- 02:39 PM EST     -3.24 knots Max Ebb
Fri -- 06:01 PM EST     0.01 knots Slack
Fri -- 06:15 PM EST     Sunset
Fri -- 08:29 PM EST     2.17 knots Max Flood
Fri -- 09:53 PM EST     Moonrise
Fri -- 11:39 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
-1.5-2.6-3.2-3-2.1-0.80.71.82.21.91.20.2-1-2.2-3.1-3.2-2.6-1.5-01.32.12.11.50.7

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (11,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Charleston, SC
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.