Monday, December9, 2019
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Marine Weather and Tides
St. Simons, GA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:11AMSunset 5:25PM Monday December 9, 2019 8:32 AM EST (13:32 UTC) Moonrise 3:51PMMoonset 4:31AM Illumination 94% Phase: Waxing Gibbous; Moon at 12 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- 748 Am Est Mon Dec 9 2019
Rest of today..South winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Inland waters a light chop. Morning fog along the coast.
Tonight..South southwest winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Inland waters a light chop.
Tuesday..South winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 8 seconds. Inland waters a light chop.
Tuesday night..South southwest winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Wednesday..West winds 5 to 10 knots becoming north northeast 15 to 20 knots in the afternoon. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 9 seconds. Inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Wednesday night..North northeast winds 25 to 30 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Showers likely and a slight chance of Thunderstorms.
Thursday..Northeast winds 25 to 30 knots. Seas 7 to 10 feet with occasional seas up to 13 feet. Showers and a slight chance of Thunderstorms.
Thursday night..East northeast winds 20 to 25 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. Showers and a slight chance of Thunderstorms.
Friday..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Showers likely and a slight chance of Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 748 Am Est Mon Dec 9 2019
Synopsis.. Surface high pressure will build across south florida today and Tuesday. A cold front will push south of the waters late Wednesday. Elevated rain chances will continue through Friday as an area of low pressure tracks east across the gulf of mexico.
Gulf stream.. The approximate location of the west wall of the gulf stream as of dec 07, 2019 at 1200 utc... 49 nautical miles east of flagler beach. 58 nautical miles east of saint augustine beach. 64 nautical miles east of jacksonville beach. 85 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near St. Simons, GA
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location: 31.13, -81.39     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 091303 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 803 AM EST Mon Dec 9 2019

UPDATE.

Dense fog will be slow to lift/dissipate in the 9-10 am time frame as south flow slowly increases today and still expect partly sunny and mild conditions by the afternoon hours with highs around 80 degrees, likely just below record high levels. Weak boundary expected to push into inland SE GA and the Suwannee River Valley of North FL from the west this afternoon with a weakening line of showers, but still not expecting much in the way of measurable rainfall, but this influx of moisture over inland zones will be the focus for the development of fog/low stratus tonight which will drift slowly towards the coastal zones of NE FL/SE GA towards morning with more dense fog possible towards sunrise. Mild overnight lows near 60 expected tonight.

Record Max Temps for December 9th . JAX 84/2013 . GNV 87/1951 . AMG 82/1943 . SSI 83/1978 . CRG 84/2013

Record Max Temps for December 10th . JAX 82/1961 . GNV 84/1972 . AMG 82/1972 . SSI 81/1997 . CRG 83/2012

MARINE.

South flow expected today in the 10-15 knot range with elevated seas remaining in the 3-5 ft range nearshore and 4-6 ft range offshore and have continued the SCEC for seas for now. Some patchy fog near the coast this morning that will dissipate late this morning.

PREV DISCUSSION [547 AM EST].

NEAR TERM [Through Tonight].

Scattered showers over the offshore coastal waters are expected to dissipate over the next few hours as they move north. Low stratus and fog was across much of northeast Florida and portions of southeast Georgia this morning. Patchy dense fog was already developing, and areas of dense fog will likely develop before daybreak. This will continue to be monitored and a Dense Fog Advisory could be required for portions of the area. The fog and low stratus will lift and scatter out by noon. A warm front was lifting northward across the area early this morning, and will be near the Altamaha River by daybreak. Surface high pressure was located east of the Northeast conus, with the surface ridge axis south of the area. Light southerly flow will prevail today, and with a warm front pushing northward through the region, temperatures will be well above normal today. Temperatures this morning will be in the 50s and lower 60s. Highs will be get near records, with highs climbing into the upper 70s to lower 80s this afternoon. Dry conditions are forecast to prevail today, with isolated showers remaining generally west of the area.

Fog and low stratus are forecast to develop tonight. However, the fog and low stratus is forecast to move in from the Gulf in the south southwest flow. This may keep the fog and stratus mainly along and to the west of Highway 301. Overnight lows will be mild in the mid 50s to low 60s.

SHORT TERM [Tuesday Through Wednesday].

Potential for fog development will continue into Tuesday morning, with inland areas most likely to have reduced visibilities. Chances for rain will increase by Wednesday as a trough ahead of the cold front moves in towards Georgia. Near record max temps on Tuesday with high temperatures peaking into the lower 80s throughout the forecast area. Temperatures on Wednesday will be noticeably lower with highs in the 60s over inland southeast Georgia and in the 70s for northeast Florida. Above average low temps are expected through the middle of the week, with temperatures ranging between the upper 50s and lower 60s Tuesday night down into the 40s over southeast Georgia and in the 50s for northeast Florida on Wednesday night.

LONG TERM [Thursday Through Monday].

Chances for showers and storms for the end of the week, with strong winds developing out of the north-northeast on Thursday and then returning to normal on Friday. A front moving in from out of the west will mark the end of the increased convection and lead to cooler and drier conditions on Sunday. High temperatures during this period are expected to range in the 50s & 60s before the weekend and then in the 60s and 70s during the weekend. Overnight low temperatures are expected to be in the 40s and 50s during this span.

AVIATION. [Through 12Z Tuesday]

Dense fog and low stratus will continue at the TAF sites through 13-14Z before scattering out. Southerly winds around 10 knots will prevail today, with light winds again tonight. Fog and low stratus is forecast to develop once again overnight, with IFR/LIFR vis and/or cigs at inland TAF sites.

PRELIMINARY POINT TEMPS/POPS.

AMG 79 61 81 56 66 / 0 0 10 30 50 SSI 72 61 74 60 69 / 0 0 10 20 40 JAX 80 58 82 61 73 / 0 0 10 20 50 SGJ 79 60 80 61 74 / 0 0 10 30 50 GNV 80 57 83 62 75 / 0 0 10 30 40 OCF 81 57 84 61 79 / 0 0 10 30 30

JAX WATCHES/WARNINGS/ADVISORIES. FL . Dense Fog Advisory until 9 AM EST this morning for Baker- Bradford-Central Marion-Clay-Coastal Duval-Coastal Nassau- Eastern Alachua-Eastern Marion-Gilchrist-Hamilton-Inland Duval-Inland Flagler-Inland Nassau-Inland St. Johns- Northern Columbia-Putnam-Southern Columbia-Suwannee-Union- Western Alachua-Western Marion.

GA . Dense Fog Advisory until 9 AM EST this morning for Appling-Bacon- Brantley-Clinch-Coastal Camden-Echols-Inland Camden-Inland Glynn-Northeastern Charlton-Northern Ware-Pierce-Southern Ware-Wayne-Western Charlton.

AM . None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41112 - Offshore Fernandina Beach, FL (132) 30 mi32 min 63°F3 ft
FRDF1 - 8720030 - Fernandina Beach, FL 32 mi50 min ESE 1 G 1 61°F 61°F1020.9 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 33 mi42 min SSE 3.9 G 3.9 65°F 62°F4 ft1020 hPa (-0.0)64°F

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brunswick, Malcolm McKinnon Airport, GA1 mi39 minSSE 44.00 miFog/Mist60°F57°F93%1020.3 hPa
Brunswick / Glynco, GA10 mi37 minN 00.50 miFog55°F55°F100%1020.3 hPa

Link to 5 minute data for KBQK

Wind History from BQK (wind in knots)
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Last 24hrNE12NE13NE12N10NE13NE11NE11NE9NE8NE6NE9NE8NE8NE5E5NE7NE5NE7NE6E4NE3E3CalmCalm
1 day agoNE6NE10E12NE13NE10E15NE12NE9N5NE7NE6NE7NE5NE7NE8NE7NE9NE9NE9NE9NE9
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2 days agoCalmCalmCalmSW9SW10W9NW4CalmW4CalmCalmCalmE4CalmCalmN4CalmSW3CalmW3CalmE3CalmCalm

Tide / Current Tables for St. Simons Lighthouse, St. Simons Island, Georgia
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Mackay River (Daymark #239), Georgia
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Mackay River (Daymark #239)
Click for Map
Mon -- 12:25 AM EST     0.39 feet Low Tide
Mon -- 04:32 AM EST     Moonset
Mon -- 06:36 AM EST     7.45 feet High Tide
Mon -- 07:12 AM EST     Sunrise
Mon -- 01:00 PM EST     0.81 feet Low Tide
Mon -- 03:50 PM EST     Moonrise
Mon -- 05:23 PM EST     Sunset
Mon -- 07:01 PM EST     6.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.61.63.24.96.47.37.46.75.542.51.30.81.32.43.95.36.36.86.45.33.82.2

Weather Map
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wmap_A
GEOS Local Image of Southeast    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 Jacksonville, FL (8,2,3,4)
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Ground Weather Radar Station Jacksonville, FL
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