Sunday, September19, 2021
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Marine Weather and Tides
Brunswick, GA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:11AMSunset 7:27PM Sunday September 19, 2021 12:07 PM EDT (16:07 UTC) Moonrise 6:08PMMoonset 4:42AM Illumination 96% Phase: Waxing Gibbous; Moon at 13 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- 934 Am Edt Sun Sep 19 2021
Rest of today..East winds 5 to 10 knots increasing to 10 to 15 knots in the late morning and afternoon. Seas 2 to 3 feet with a dominant period 7 seconds. A moderate chop on the intracoastal waters. Slight chance of Thunderstorms in the morning. Chance of showers. Chance of Thunderstorms in the afternoon.
Tonight..East winds 10 to 15 knots becoming southeast 5 to 10 knots after midnight. Seas 3 to 4 feet with a dominant period 9 seconds. A light chop on the intracoastal waters. Chance of Thunderstorms in the evening. Chance of showers. Slight chance of Thunderstorms after midnight.
Monday..Southeast winds 5 to 10 knots. Seas 2 to 3 feet with a dominant period 8 seconds. A light chop on the intracoastal waters. Showers likely in the morning. Thunderstorms likely. Showers in the afternoon.
Monday night..Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Mostly smooth on the intracoastal waters. Showers likely in the evening. Slight chance of Thunderstorms. Chance of showers after midnight.
Tuesday..Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A light chop on the intracoastal waters. Showers likely in the morning. Slight chance of Thunderstorms. Showers in the afternoon.
Tuesday night..South winds 5 to 10 knots becoming southwest after midnight. Seas 2 to 3 feet. Chance of showers and slight chance of Thunderstorms.
Wednesday..South winds 5 to 10 knots. Seas 2 to 3 feet. Showers likely and chance of Thunderstorms.
Wednesday night..Southwest winds 5 to 10 knots becoming northwest after midnight. Seas 2 to 3 feet. Chance of showers and Thunderstorms.
Thursday..North winds 10 to 15 knots. Seas 3 to 4 feet. Slight chance of showers and Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 934 Am Edt Sun Sep 19 2021
Synopsis.. A trough of low pressure will develop along the northeast florida and southeast georgia coasts today and persist through Wednesday. Abundant tropical moisture and the trough will continue to enhance daily shower and Thunderstorm chances across area waters the next few days. A cold front will then enter the southeastern states towards midweek, passing through our waters late Wednesday night, followed by increased north winds on Thursday.
Gulf stream.. The approximate location of the west wall of the gulf stream as of sep 18, 2021 at 1200 utc... 47 nautical miles east of flagler beach. 60 nautical miles east southeast of saint augustine beach. 76 nautical miles east of jacksonville beach. 94 nautical miles east of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Brunswick, GA
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location: 31.14, -81.52     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 191325 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 925 AM EDT Sun Sep 19 2021

. LOCALIZED HEAVY RAIN AND FLOODING POSSIBLE TODAY MAINLY OVER PORTIONS OF NORTHEAST FL .

UPDATE. Forecast remains on track, no major updates made at this time. Showers have been moving onshore in SE GA and north of St. Augustine in NE FL. The Lightning threat this morning is low but a few cells have produced a few lightning strikes near the coast and over the coastal waters. Showers will continue to move inland throughout the morning, then numerous showers and thunderstorms will be possible area-wide this afternoon and evening. The 12Z Jacksonville upper air sounding measured PWAT values well above average, which will result in another day of heavy rainfall and potential flooding. The heaviest rainfall is expected to be generally between I-95 and I-75 in Northeast Florida. Locations along the I-75 corridor will be especially susceptible to flooding due to rain falling on saturated soils from heavy rainfall received in this area over the past few days. Runoff could also exacerbate ongoing river flooding along the Santa Fe River. Expected precipitation and cloud cover will keep high temperatures in the middle 80s today.


PREV DISCUSSION [742 AM EDT].

NEAR TERM [Through Tonight].

Current guidance suite continues to show weak west-east low level troughing from the eastern Gulf coast, through north central FL and then into the our southern marine waters off of Flagler and St Johns county. This weak boundary will remain quasi-stationary today and then begin to lift slowly northward later tonight. Moisture remains high over most zones with widespread PWATs of 2+ inches through tonight, and a weak east-northeast low level flow persists as high pressure ridge remains from GA northeastward to New England. This setup will favor initial convection again along the coastal areas through the morning hours, with convection oriented in cells or northwest-southeast bands due to uniform east- southeast flow through about 12 kft. With a mid level trough from the central FL panhandle southeast into northeast FL, slow storm motion and positive vorticity advection will again support numerous to widespread showers and storms to mainly inland northeast FL. Areas of heavy rainfall and localized flooding may develop again and have included heavy rainfall wording in the grids. Abundant clouds and precip area will keep highs a bit lower than the past couple of days with highs mainly in the mid 80s.

Tonight . deep layered moisture and leftover boundaries will support scattered to numerous showers and storms this evening, eventually weakening overnight with loss of heating. Focus after 1-2 AM will be more toward the coastal areas again, especially from St Augustine to Brunswick but with more inland progress over inland southeast GA. Patchy late night fog will be possible and lows around 71-75 deg are expected.

SHORT TERM [Monday Through Tuesday].

A developing coastal trough may produce bands of heavy rainfall especially along the se Ga coast where onshore flow and convergence will increase as strong high pressure builds over the ne U.S. Heavy rainfall may also occur over inland ne Fl during the afternoon/evening hours as onshore winds push the east coast seabreeze well inland. Deep moisture and weak steering winds will continue the chance for localized flooding.

LONG TERM [Wednesday Through Saturday].

An approaching upper trough and cold front to the nw will produce a sw-w flow over the area on Wednesday maintaining the very moist and unstable airmass over the area. Showers and thunderstorms will be likely with the continued threat of heavy rainfall and localized flooding due to PWATs near 2 inches and a slow storm motion. The cold front will push se across se Ga Wednesday night and ne Fl early Thursday morning bringing drier air and lower rain chances. Surface high pressure will build to the north of the area which will result in a northeast flow into the weekend. Coastal convergence and low level moisture behind the front will produce a chance for mainly coastal showers near the ne Fl coast Thu- Sat . with dry conditions expected across se Ga. Cooler and less humid conditions behind the front will result in low temperatures falling into the low/mid 60s well inland.

AVIATION. [Through 12Z Monday]

Showers are moving onshore near SSI/CRG/JAX/SGJ that could bring lower visibility and ceilings as they pass. Lightning has been observed this morning in showers near SSI and JAX, included VCTS early. Ceilings will lift to VFR at most sites today, with MVFR and IFR conditions possible in showers and thunderstorms this afternoon and evening. Rain should taper off at all sites around 06Z Monday or shortly after, and patchy fog and low stratus will be possible late in the TAF period at inland locations. Left out fog and lower ceilings for now, but will likely be added to the 18Z TAFs.

MARINE.

Variable to light east winds early today will increase to near 10-15 kt by the aftn hours. Seas are a bit lower than NWPS so slight adjustments were made to the 1st period. Otherwise, winds tonight will transition to east-southeast tonight and then southeast on Monday as coastal troughing, oriented more north to south, develops, and more or less persists into Wednesday. The abundant moisture, and convergence flow in the low levels will support daily showers and storms over the area waters. A cold front moves in late Wed night, with a northerly flow anticipated by Thursday as the front slides just south of the area waters.

Rip Currents: Moderate risk of rip currents will continue today through Monday due to onshore flow and easterly swells. Some longer period swell is noted around 13 seconds today.

HYDROLOGY.

Minor flooding continues along lower portions of the Santa Fe River near the Three Rivers Estates gauge. Runoff from numerous to widespread convection will likely result in river rises across portions of northeast FL. It is possible additional river flood warnings may be needed, especially along the Santa Fe River where heavy rains fell late Saturday.

Locally heavy rainfall and localized flooding will be possible over the next few days with WPC showing marginal risk of excessive rainfall. Estimated rainfall amounts into Monday are around 1-2 inches, with locally higher totals possible. Heaviest amounts in the today- Monday time period look to be over northeast FL and possibly coastal southeast GA.

PRELIMINARY POINT TEMPS/POPS.

AMG 85 72 83 71 85 / 60 50 80 40 80 SSI 85 75 84 75 85 / 60 70 80 70 90 JAX 86 74 85 74 87 / 70 50 80 50 90 SGJ 85 74 85 74 86 / 60 50 80 50 90 GNV 85 71 85 71 87 / 80 50 80 30 90 OCF 86 73 87 73 88 / 80 40 80 30 80

JAX WATCHES/WARNINGS/ADVISORIES. FL . None. GA . None. AM . None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAXG1 - Sapelo Island Reserve, GA 23 mi67 min ENE 8 81°F 1018 hPa (+0.0)81°F
FRDF1 - 8720030 - Fernandina Beach, FL 32 mi49 min Calm G 1 78°F 83°F1018.6 hPa
41112 - Offshore Fernandina Beach, FL (132) 32 mi37 min 82°F2 ft
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 39 mi77 min ESE 9.7 G 12 79°F 83°F2 ft1017.7 hPa (+1.1)

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brunswick, Malcolm McKinnon Airport, GA7 mi74 minE 310.00 miPartly Cloudy80°F76°F87%1018.6 hPa
Brunswick / Glynco, GA9 mi72 minN 310.00 miLight Rain75°F74°F96%1018.6 hPa

Link to 5 minute data for KSSI

Wind History from SSI (wind in knots)
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Last 24hrE7E9E10--------------E5CalmCalmCalmE3E5NE9NE6NE11N6N4NE3E3SE12
G17
1 day agoSE6SE7E8E7E8E6E5E4E3CalmCalmE3E4E3CalmN3CalmCalmN3NE4CalmE7E7E9
2 days agoE3SE14
G20
E4SE8E7E5E6N6NW7NW4SW6CalmCalmCalmCalmN3CalmCalmCalmE3E3E5E6E5

Tide / Current Tables for Brunswick, East River, Georgia
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Brunswick
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Sun -- 02:26 AM EDT     0.23 feet Low Tide
Sun -- 05:42 AM EDT     Moonset
Sun -- 07:12 AM EDT     Sunrise
Sun -- 08:28 AM EDT     7.89 feet High Tide
Sun -- 02:40 PM EDT     0.22 feet Low Tide
Sun -- 07:08 PM EDT     Moonrise
Sun -- 07:26 PM EDT     Sunset
Sun -- 09:01 PM EDT     8.55 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.51.50.40.41.53.45.36.97.87.86.95.53.61.80.50.31.22.84.96.88.18.68.16.9

Tide / Current Tables for St. Johns River Entrance, Florida Current (3)
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St. Johns River Entrance
Click for Map
Sun -- 01:18 AM EDT     -2.01 knots Max Ebb
Sun -- 04:43 AM EDT     0.00 knots Slack
Sun -- 05:42 AM EDT     Moonset
Sun -- 07:12 AM EDT     Sunrise
Sun -- 07:17 AM EDT     2.40 knots Max Flood
Sun -- 10:17 AM EDT     -0.00 knots Slack
Sun -- 01:28 PM EDT     -2.08 knots Max Ebb
Sun -- 04:59 PM EDT     0.00 knots Slack
Sun -- 07:07 PM EDT     Moonrise
Sun -- 07:26 PM EDT     Sunset
Sun -- 07:41 PM EDT     2.67 knots Max Flood
Sun -- 10:49 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.7-2-1.9-1.6-0.90.41.82.42.31.60.4-0.9-1.7-2-2-1.7-1.201.52.52.62.21.1-0.2

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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