Tuesday, March28, 2017 L-36.com


Marine Weather and Tides
Darien, GA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:17AMSunset 7:44PM Tuesday March 28, 2017 5:28 PM EDT (21:28 UTC) Moonrise 6:50AMMoonset 7:32PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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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AMZ450 Coastal Waters From Altamaha Sound To Fernandina Beach Fl Out 20 Nm- Coastal Waters From Fernandina Beach To St. Augustine Fl Out 20 Nm- Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 220 Pm Edt Tue Mar 28 2017
Tonight..South winds 10 to 15 knots becoming west southwest after midnight. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Inland waters a light chop.
Wednesday..West northwest winds 5 to 10 knots becoming north northwest in the morning, then becoming east southeast in the afternoon. Seas 2 to 4 feet. Dominant period 10 seconds. Inland waters a light chop.
Wednesday night..East southeast winds 5 to 10 knots. Seas 2 to 4 feet. Dominant period 10 seconds. Inland waters smooth.
Thursday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 9 seconds. Inland waters a light chop. A chance of showers in the morning. A slight chance of showers and Thunderstorms in the afternoon.
Thursday night..South southeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters choppy. A slight chance of showers.
Friday..South winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters choppy. A chance of showers and a slight chance of Thunderstorms.
Friday night..West southwest winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a moderate chop. A slight chance of showers and Thunderstorms.
Saturday..West northwest winds 5 to 10 knots becoming east southeast in the afternoon. Seas 2 to 3 feet. Inland waters smooth.
Saturday night..South winds around 5 knots. Seas 2 to 3 feet. Inland waters smooth.
Sunday..East southeast winds 5 to 10 knots. Seas 2 to 3 feet. Inland waters smooth.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 220 Pm Edt Tue Mar 28 2017
Synopsis.. High pressure extending from the southeastern gulf of mexico to the southeastern seaboard will shift southward and will weaken through midweek. A weak cold front will move southward and stall near the georgia waters by late Wednesday. The front will lift back north as a warm front on Thursday ahead of an approaching cold front that will cross our waters on Friday night and early Saturday. Weak high pressure will build over our region this weekend in the wake of this front.

7 Day Forecast for Marine Location Near Darien, GA
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location: 31.32, -81.36     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 281757
afdchs
area forecast discussion
national weather service charleston sc
157 pm edt Tue mar 28 2017

Synopsis
A weak cold front will stall over or near the area on Wednesday
before moving back north Thursday night into Friday as a warm
front. Another cold front will move through Friday night into
Saturday followed by drier high pressure Sunday. Unsettled
weather could return as soon as next Monday.

Near term /through tonight/
A toasty day is in store given low-level warm air advection, a
developing downslope flow aloft, and boundary layer compression
ahead of a weak back door cold front. Mostly sunny skies this
morning have allowed temps to quickly rise into the mid to upper
70s. The tail end of a weak upper vort will move through this
afternoon, bringing a bit more cloud cover and perhaps an
isolated shower or tstm, mainly inland where a lee trough
develops. Despite approaching low and mid level cloudiness, we
expect some of this to dissolve during the afternoon as the
subsidence increases with the downslope flow. Areas closer to
the coast should reach the highest temps. We nudged highs up 1-2
degrees based on current trends and rap13 thickness progs, which
gives 86-88f in most spots. This could tie or break the record
high at kchs today.

Tonight, debris clouds should dissipate across the CWA during
the evening hours. The cold front is forecast to slowly drop in
from the north. The approach and passage of the front will likely
keep winds steady from the west. Using a blend of guidance, min
temperatures are forecast to range from the upper 50s inland to
the low 60s across SE ga.

Short term /Wednesday through Friday/
Atlantic high pressure will give way to a cold front Wednesday which
should make it into southeast ga as high pressure builds from the
north. Drier air and minimal synoptic forcing will yield dry
conditions Wednesday, although cannot rule out a few showers and/or
storms near the altamaha river which will be closer to the stalled
front. It should remain rain-free until later Thursday when deeper
moisture returns and isentropic ascent increases across the area
north of the stalled front which will be starting to move back north
as a warm front. Thus, showers and possibly a few thunderstorms
(mainly across ga) are expected. Rain chances will increase further
Thursday night into Friday as the warm front lifts north through the
area and moisture/forcing increase. Although wind fields will be
strengthening, instability appears minimal Friday and thus the
threat for severe weather is low at this time. Either way it should
be a breezy day with gusts up to around 25 mph.

Temperatures should push into the lower to mid 80s most inland
locales Wednesday, with some upper 80s possible given the offshore
flow and frontal compression. On Thursday, high pressure building
from the north will keep it a bit cooler, especially across sc where
it should stay below 80 degrees except close to the savannah river.

Once again wouldn't be surprised if upper 80s occurred Thursday
toward inland portions of the altamaha river closer to the stalled
front. Temperatures Friday will be moderated by the clouds/rain,
likely only reaching close to 80 inland. Prevailing onshore winds
will keep coastal locations much cooler during the daytime through
the period.

Long term /Friday night through Monday/
A cold front will push through Friday night into Saturday followed
by drier high pressure Sunday. Unsettled weather could return early
next week as a storm system moves across the deep south, although
there remains significant uncertainty regarding the timing of best
rain chances. Highest confidence in rain will be the first part of
Friday night when showers, and possibly some thunderstorms, are
expected. Temperatures should remain above normal through the
period.

Aviation /18z Tuesday through Sunday/
Vfr.

Extended aviation outlook: restrictions possible Wed night/thu
morning due to low clouds and/or fog, then likely due to
showers/thunderstorms/low clouds, mainly Thu night into early
fri night.

Marine
The region will remain between a cold front across the carolina
piedmont and high pressure off the fl coast. This pattern
should result in a 2-3 mb pressure gradient across the forecast
area. South winds should gradually strengthen across the marine
zones, becoming gusty this afternoon. The highest wind gusts are
forecast to occur across amz350 in the low 20 kts. Swells
should remain between 3-4 feet today, portions of amz350 and
all of 374 will see 5 feet. Tonight, winds will shift from the
west and weaken as a backdoor cold front slides over the
lowcountry. Wave heights may decrease around 1 foot with the
weaker offshore winds.

Wednesday through Sunday: a weak cold front will move into the area
Wednesday and Wednesday night as high pressure builds to the north.

The front will return back north through the area as a warm front
Thursday night/Friday. A cold front will then move through Friday
night/early Saturday. At some point prior to the cold frontal
passage Saturday sea fog could develop across the cooler near shore
waters and lead to low visibilities.

Expect a high chance for advisories Thursday night across the outer
waters, expanding northward into the sc waters through Friday night
as strengthening winds build seas to 6-8 feet, highest beyond
20 nm.

Rip currents: high risk for rip currents along the sc coast and
moderate for ga today. Gusty winds and long period 3 foot swells
will likely produce rip currents. The combination of higher than
normal tides, onshore winds and swells in the surf zone will
support an enhanced risk for rip currents through mid week,
possibly lasting into Friday.

Tides/coastal flooding
High tides could reach advisory levels, mainly late wed/thu, due
to strengthening onshore winds and swells impacting the coast.

This could cause shallow to moderate saltwater inundation in
vulnerable coastal areas, possibly even reaching major levels
Thursday night. Thus, coastal flood advisories are expected with
a potential for watches/warnings as well.

Climate
Records for today
record
station high
------- ----------
kchs 85 2007
ksav 89 1907
kcxm 91 1907

Chs watches/warnings/advisories
Ga... None.

Sc... High risk for rip currents until 8 pm edt this evening for
scz048>051.

Marine... None.

Near term... Jrl
short term... Rjb
long term... Rjb
aviation... Jrl/rjb
marine... Ned/rjb
tides/coastal flooding...

climate...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAXG1 - Sapelo Island Reserve, GA 8 mi89 min S 6 83°F 1014 hPa (-3.0)63°F
41112 - Offshore Fernandina Beach, FL (132) 42 mi29 min 68°F4 ft
FRDF1 - 8720030 - Fernandina Beach, FL 45 mi41 min SE 7 G 12 77°F 71°F1015.1 hPa

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brunswick / Glynco, GA7 mi34 minWSW 810.00 miPartly Cloudy84°F60°F45%1014.2 hPa
Brunswick, Malcolm McKinnon Airport, GA12 mi36 minS 1110.00 miA Few Clouds74°F63°F69%1014.3 hPa

Wind History from BQK (wind in knots)
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Last 24hrS7SE9SE5SE4SE6S5SE5S5SW5SW6SW4S7SW4SW5SW8SW7SW7W8W10
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1 day agoE9SE5SE6SE4SE6SE4SE4CalmCalmCalmCalmCalmCalmCalmCalmSW3SW7SW8SW6SE8SE9
G15
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2 days agoSE9SE7E6E5SE3E3SE4SE5SE5CalmCalmCalmCalmCalmCalmSE6S6S7E7S12
G15
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SE13E11E9
G14

Tide / Current Tables for Jones Creek entrance, Hampton River, Georgia
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Jones Creek entrance
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Tue -- 03:17 AM EDT     -0.96 feet Low Tide
Tue -- 07:18 AM EDT     Sunrise
Tue -- 07:49 AM EDT     Moonrise
Tue -- 10:08 AM EDT     8.31 feet High Tide
Tue -- 03:39 PM EDT     -1.10 feet Low Tide
Tue -- 07:42 PM EDT     Sunset
Tue -- 08:31 PM EDT     Moonset
Tue -- 10:24 PM EDT     8.85 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.32.80.5-0.9-0.70.62.54.66.57.88.37.86.23.81.3-0.7-1-01.94.26.488.88.6

Tide / Current Tables for Old Tower, Sapelo Island, Georgia
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Old Tower
Click for Map
Tue -- 03:19 AM EDT     -0.90 feet Low Tide
Tue -- 07:18 AM EDT     Sunrise
Tue -- 07:49 AM EDT     Moonrise
Tue -- 09:18 AM EDT     7.80 feet High Tide
Tue -- 03:42 PM EDT     -1.09 feet Low Tide
Tue -- 07:42 PM EDT     Sunset
Tue -- 08:31 PM EDT     Moonset
Tue -- 09:33 PM EDT     8.30 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
420.2-0.8-0.60.93.15.377.87.66.54.92.80.8-0.7-10.12.44.978.18.27.3

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 (17,4,5,8)
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Ground Weather Radar Station Jacksonville, FL
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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.