Sunday, January19, 2020
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Marine Weather and Tides
Darien, GA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:22AMSunset 5:50PM Sunday January 19, 2020 2:03 AM EST (07:03 UTC) Moonrise 2:29AMMoonset 1:34PM Illumination 34% Phase: Waning Crescent; Moon at 24 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- 906 Pm Est Sat Jan 18 2020
.small craft exercise caution...
Rest of tonight..South southwest winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 8 seconds. Inland waters a moderate chop. A chance of showers toward early morning.
Sunday..Southwest winds 10 to 15 knots becoming west in the afternoon. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Inland waters a moderate chop. Showers likely.
Sunday night..North northwest winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 6 seconds. Inland waters choppy.
Monday..North winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 5 seconds. Inland waters choppy.
Monday night..North winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 5 seconds. Inland waters choppy.
Tuesday..North winds 20 to 25 knots with occasional gusts to around 35 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 6 seconds. Inland waters choppy. A slight chance of showers.
Tuesday night and Wednesday..North northeast winds 20 to 25 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. A chance of showers.
Wednesday night..Northeast winds 20 to 25 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. A chance of showers.
Thursday..East northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. A chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 906 Pm Est Sat Jan 18 2020
Synopsis.. A cold front will approach the region late tonight and will move southeast across the area on Sunday, with strong high pressure building from the northwest Sunday night. Strong high pressure will remain to the northwest through Tuesday, then to the north through Friday. Elevated winds and seas and are expected to persist into Wednesday, with strongest winds of 20 to 30 knots Tuesday through Wednesday.
Gulf stream.. The approximate location of the west wall of the gulf stream as of jan 16, 2020 at 1200 utc... 62 nautical miles east of flagler beach. 68 nautical miles east of saint augustine beach. 75 nautical miles east of jacksonville beach. 91 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


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 190601 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 101 AM EST Sun Jan 19 2020

SYNOPSIS. A cold front is expected to move through late tonight into Sunday morning. In the wake of the front, a cold and dry air mass will build over the region early next week and will remain until Thursday. A low pressure system will bring warmer temperatures and showers beginning Friday.

NEAR TERM /THROUGH TODAY/. Midnight update: Forecast on track, only minor tweaks to sky cover and POPs.

Extensive mid and high level cloud cover has overspread the forecast area in advance of a cold front that will move into local counties prior by daybreak. Warm advection in advance of the front and the blanketing affects of the clouds will hold temps fairly steady or even allow them to climb a couple of degrees overnight. Through 6 am the bulk of the region will experience temps in the lower or middle 60s, far above normal, as a 35-45 kt low level jet spreads overhead between 06Z and 12Z. This will yield increasing southwesterly winds that reach as high as 20-30 mph at times overnight.

Forcing aloft with strung out vorticity and the right entrance region of the upper jet, plus modest isentropic ascent will allow for scattered to numerous showers to spread in ahead of the cold front. The highest PoP of 50-60% will cover the west- northwest tier prior to 4 am, with the higher PoP spreading closer to the coast closer to daybreak.

SHORT TERM /TONIGHT THROUGH WEDNESDAY/. Sunday: As the cold front progresses through the area during the morning hours, showers are expected to continually decrease until the afternoon, when cool and dry high pressure moves into the area. This will help decrease POPs quickly, with a mostly dry afternoon/evening. Temperatures are expected to be in the low to mid 60s. Throughout the night, temps will trend much cooler with lows in the high 30s, low 40s.

Monday and Tuesday: As high pressure continues to prevail, temperatures will be much lower than we have seen in recent days. While mid 40s to low 50s are expected, temps could actually stay lower. Into the night, temps will drop into the low 30s along the coast while inland will see upper 20s. Tuesday will start off quite cold and warm up to similar temps as Monday, just a little chiller.

It is interesting that a clipper-like system is expected to quickly ripple over the region on Tuesday, slowly closing off at H5. As the system passes over the CWA, H85 temperatures cool to -6 to -9C. Using a blend of MOS, highs on Tuesday are expected to remain 10-13 degrees below normal. The core of the mid and high level moisture is expected to pass to the south, however, cloud cover is expected to increase through the daylight hours on Tuesday. By late Tuesday, the mid-level disturbance will pass over the cold front over the western Atlantic, resulting in cyclogenesis east of the Gulf Stream. As a result, a few showers are forecast to develop across the outer GA waters, temperatures in the upper 40s to low 50s should support all liquid.

LONG TERM /WEDNESDAY NIGHT THROUGH SATURDAY/. A large area of sfc high pressure will dominate much of the East Conus with its center shifting across the Midwest midweek, then into the Northeast by Friday. Aloft, a large trough of low pressure will begin to shift offshore midweek, setting up a period of mid-lvl ridging through late week. The pattern will favor cold temps Tuesday night with lows in the mid/upper 20s away from the coast, before conditions gradually warm as winds become more directly onshore through late week. Temps will likely warm into the low/mid 50s Wednesday, then mid 50s well inland to upper 50s/lower 60s on Thursday. On Friday, onshore winds should prevail as high pressure shifts off the East Coast. A developing coastal trough could also bring some showers onshore. In general, temps should approach the mid/upper 60s. Chances of precip should increase during the weekend as low pressure over the Gulf of Mexico merges with a cold front approaching from the west on Saturday. Scattered to potentially numerous showers are possible during peak forcing/moisture across the area Saturday afternoon.

AVIATION /06Z SUNDAY THROUGH THURSDAY/. VFR conditions at both terminals much of tonight and Sunday. However, scattered SHRA will move through the area with a cold front late tonight and Sunday morning, and this could result in several hours of MVFR conditions.

We'll be close to LLWS mid morning, but surface winds currently look to be too strong to prevent us from adding to the latest TAF set. Gusty surface winds will then persist behind the cold front through about sunset.

Extended Aviation Outlook: VFR conditions are expected at both terminals Monday through the middle of next week.

MARINE. Overnight: Increasing low level winds that reach as high as 35-40 kt in advance of the next cold front will be tempered somewhat by warm advection. However, given geostrophic wind fields that are as great as 30 or 35 kt, we have Small Craft Advisories in effect for the South Carolina Atlantic waters and the outermost Georgia waters. SW winds will reach as high as 20-25 kt and gusty across these marine zones, with seas as large as 5 or 6 ft within 20 nm and up to 7 ft further out. Conditions will be close to advisory thresholds in Charleston Harbor for several hours late tonight and Sunday morning.

Sunday: A cold front will sweep across the waters on Sunday. Winds are forecast to veer from SW during the morning from the WNW by the afternoon. Conditions are expected to become gusty, with frequent gusts to around 25 kts across AMZ350 and 374. Seas across these zones are forecast to range between 4 to 7 ft. Small Craft Advisories will remain until 6 PM Sunday.

On Monday, large high pressure centered over the Mid West will build SE across region. The pressure gradient across the marine zones should support gusts in the low 20s early Monday morning, decreasing to 20kts or less during the daylight hours.

Tuesday through Wednesday night: Low pressure will organize and deepen offshore as a mid-level disturbance arrives from the NW. The marine zones will remain between the developing low to the east and high pressure centered to the NW. This pattern will likely yield Small Craft Advisory conditions outside the CHS Harbor Tuesday through Wednesday night with gusty NE winds and building seas. On Thursday, seas above 6 ft may linger across AMZ374 through much of the day. High pressure will build over the area on Thursday, with gradually lowering wind gusts and seas.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . Small Craft Advisory from 4 AM to 10 AM EST this morning for AMZ352. Small Craft Advisory until 6 PM EST this evening for AMZ350- 374.

NEAR TERM . SHORT TERM . LONG TERM . AVIATION . MARINE .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 27 mi74 min SSW 16 G 19 63°F 60°F5 ft1019.5 hPa (-1.9)61°F
41112 - Offshore Fernandina Beach, FL (132) 42 mi34 min 62°F4 ft
FRDF1 - 8720030 - Fernandina Beach, FL 45 mi46 min S 4.1 G 8.9

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brunswick / Glynco, GA7 mi69 minSSW 1410.00 miLight Rain65°F58°F80%1020 hPa
Brunswick, Malcolm McKinnon Airport, GA12 mi71 minSSW 1010.00 miA Few Clouds67°F55°F68%1020.1 hPa

Link to 5 minute data for KBQK

Wind History from BQK (wind in knots)
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Last 24hrNE13NE9NE7NE6N6N4N5N6NE5NE6E4SE8S11S10SE10SE8SE5S7S9S10S12S12S13S11
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2 days agoW5W5W6SW5W5W5W6W7W11W10NW9
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Tide / Current Tables for Wolf Island, south end, Georgia
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Wolf Island
Click for Map
Sun -- 02:29 AM EST     Moonrise
Sun -- 03:37 AM EST     6.79 feet High Tide
Sun -- 07:23 AM EST     Sunrise
Sun -- 10:27 AM EST     0.17 feet Low Tide
Sun -- 01:33 PM EST     Moonset
Sun -- 03:50 PM EST     6.11 feet High Tide
Sun -- 05:48 PM EST     Sunset
Sun -- 10:38 PM EST     -0.29 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.24.15.76.66.76.25.23.82.410.30.31.434.65.86.15.64.73.420.7-0.1-0.2

Tide / Current Tables for Old Tower, Sapelo Island, Georgia
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Old Tower
Click for Map
Sun -- 02:29 AM EST     Moonrise
Sun -- 03:24 AM EST     7.00 feet High Tide
Sun -- 07:23 AM EST     Sunrise
Sun -- 09:55 AM EST     0.16 feet Low Tide
Sun -- 01:33 PM EST     Moonset
Sun -- 03:37 PM EST     6.30 feet High Tide
Sun -- 05:47 PM EST     Sunset
Sun -- 10:06 PM EST     -0.26 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.14.86.26.96.96.14.93.31.80.60.20.723.75.26.16.25.64.431.50.3-0.30.1

Weather Map
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wmap_A
GEOS 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 (2,6,7,8)
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Ground Weather Radar Station Jacksonville, FL
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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 numerous 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.