Monday, December9, 2019
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Marine Weather and Tides
St. Marys, 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 7:10AMSunset 5:26PM Monday December 9, 2019 9:34 PM EST (02:34 UTC) Moonrise 3:52PMMoonset 4:32AM Illumination 97% 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- 843 Pm Est Mon Dec 9 2019
Rest of tonight..South southwest winds 10 to 15 knots. Seas 2 to 4 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 2 to 4 feet. Dominant period 8 seconds. Inland waters a light chop. A chance of showers.
Wednesday..West northwest winds 10 to 15 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 20 to 25 knots with gusts to around 35 knots. Seas 5 to 7 feet with occasional seas up to 9 feet building to 6 to 9 feet with occasional seas up to 11 feet after midnight. Dominant period 6 seconds. Inland waters rough. Showers likely.
Thursday..Northeast winds 20 to 25 knots with gusts to around 35 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. Dominant period 8 seconds. Inland waters rough. Showers and a slight chance of Thunderstorms.
Thursday night..East northeast winds 15 to 20 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Showers likely and a slight chance of Thunderstorms.
Friday..East southeast 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.
Friday night..South 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.
Saturday..Southwest winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. A chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 843 Pm Est Mon Dec 9 2019
Synopsis.. Surface high pressure will build across south florida through Tuesday. A cold front will push south of the waters late Wednesday. Elevated rain chances will continue Wednesday through Friday as an area of low pressure tracks east across the gulf of mexico. Another front will move south across the local waters Saturday.
Gulf stream.. The approximate location of the west wall of the gulf stream as of dec 10, 2019 at 1200 utc... 45 nautical miles east of flagler beach. 52 nautical miles east of saint augustine beach. 64 nautical miles east of jacksonville beach. 87 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near St. Marys, GA
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location: 30.72, -81.55     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 100222 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 922 PM EST Mon Dec 9 2019

NEAR TERM [Through Tonight].

Warmer tonight with more inland fog, especially west of the Highway 301 corridor.

A weak surface trough extended across our far western zones and provided enough low level convergence combined with an axis of moisture and weak instability nosing inland from the Gulf to trigger a few spotty showers and sprinkles still occasionally impacting our zones roughly west of Waycross to Live Oak. Cloud cover associated with this trough axis is expected to linger and begin to settle toward the surface overnight, transitioning into a low stratus/advection fog event as it creeps inland across our Suwannee River Valley zones northward across inland SE GA.

Farther south, a surface ridge axis was lifting northward across north-central Florida where dry conditions prevailed under passing high cirrus. As temperatures cool and surface winds weaken under the ridge axis, conditions are favorable for both radiational fog and perhaps some advection from the Gulf to bring low visibilities across our NE FL zones, generally west of Highway 301 corridor but potentially as far east as the St. Johns River basin late tonight and into Tue morning.

Low temperatures will trend warmer, above climo, under warm WSW flow. Lows will range from the low 60s to upper 50s across SE GA and the Suwannee River Valley zones near the trough axis and where more persistent cloud cover is expected. Inland NE FL under the ridge axis will trend in the mid/upper 50s to near 60 toward the Atlantic coast

MARINE.

SSE winds will transition more SSW tonight as surface ridge axis builds across north-central FL. Winds will range between 10-15 kts with combined seas generally 4 ft or less. Fog potential near inland estuaries toward sunrise.

PREV DISCUSSION [655 PM EST].

SHORT TERM [Tuesday night through Thursday Night]. A cold front will slowly move se into se Ga Tuesday night reaching ne Fl Wednesday morning as an upper trough moves into the se. Showers will develop along and behind frontal boundary with isolated thunderstorms possible over ne Fl Wednesday afternoon. The front will be south of the area Wednesday night through Thursday night as strong high pressure builds in from the north. A tight pressure gradient will produce gusty ne winds especially at the coast. The chance for rain will continue with higher chances along the east coast due to a strong ne flow. Temperatures will be close to December averages.

LONG TERM [Friday Through Monday]. A stronger upper trough will approach from the lower Ms River Valley on Friday producing surface cyclogenesis over the north central Gulf. This will bring increasing rain chances with thunderstorms Friday and Friday night with the low moving ne across the Fl panhandle and south Ga. This system will lift ne of the area on Saturday with drier air advecting in through Monday. Temperatures will be at or above normal through the period.

AVIATION. [Through 00Z Wednesday]

Prevailing VFR conditions early this evening under high cirrus, but will start to see lower clouds begin to edge inland from the WSW. High confidence of IFR to VLIFR restrictions tonight with low stratus and advective fog moving inland from the Gulf Coast region impacting GNV after 03Z and extending eastward toward VQQ/JAX through 09Z under light SSW winds. Low stratus is expected to advect toward coastal terminals through sunrise with restrictions of MVFR to IFR advertised at this time. Low clouds and fog will erode near the Atlantic coast first between 12-14Z Tue morning with slower erosion over inland areas between 12-15z. Prevailing VFR expected by 16Z with low cumulus in the afternoon under warm and breezy at times southerly flow. Expect a stronger west coast sea breeze in the afternoon with a weaker east coast sea breeze likely lingering just along the coast which may back winds more SSE at SSI and SGJ but may not make much inland progress toward CRG.

PRELIMINARY POINT TEMPS/POPS.

AMG 62 82 58 62 46 / 20 10 40 40 50 SSI 61 77 62 65 51 / 0 10 40 40 40 JAX 58 82 62 69 53 / 0 10 30 40 40 SGJ 59 80 64 72 58 / 0 10 30 40 50 GNV 58 82 65 72 56 / 0 10 30 50 30 OCF 57 84 64 76 57 / 0 10 20 40 30

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
FRDF1 - 8720030 - Fernandina Beach, FL 5 mi53 min SSE 1.9 G 2.9 70°F 62°F1020.1 hPa
41112 - Offshore Fernandina Beach, FL (132) 14 mi35 min 63°F3 ft
NFDF1 22 mi53 min WSW 1.9 G 2.9 67°F 1020.9 hPa
BLIF1 23 mi47 min SSE 1.9 G 1.9 67°F 1020.7 hPa67°F
DMSF1 23 mi47 min 64°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 23 mi53 min S 2.9 G 2.9 67°F 65°F1019.8 hPa
LTJF1 24 mi47 min 67°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 59 mi45 min S 12 G 12 65°F 63°F3 ft1018.7 hPa (+1.6)64°F

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fernandina Beach Municipal Airport, FL9 mi60 minSW 310.00 miFair63°F0°F%1019.3 hPa
Jacksonville International Airport, FL17 mi99 minN 010.00 miMostly Cloudy65°F59°F81%1018.9 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL24 mi43 minN 010.00 miMostly Cloudy65°F62°F90%1019.4 hPa

Link to 5 minute data for KJAX

Wind History from JAX (wind in knots)
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Last 24hrNE6NE4E6NE3CalmCalmCalmCalmCalmCalmCalmCalmS5S9S9S10S7S10SW8S6S6CalmCalmSE3
1 day agoCalmN4N4N4N6N5N6NE8NE10NE10NE10NE10NE13NE13NE13
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2 days agoCalmCalmCalmCalmCalmCalmCalmNE3W3CalmNE3CalmNE6NE7NE8NE8N9NE11NE12NE7NE8N6N3N5

Tide / Current Tables for St. Marys, St. Marys River, Florida
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St. Marys
Click for Map
Mon -- 12:39 AM EST     0.39 feet Low Tide
Mon -- 04:32 AM EST     Moonset
Mon -- 07:06 AM EST     6.36 feet High Tide
Mon -- 07:11 AM EST     Sunrise
Mon -- 01:18 PM EST     0.70 feet Low Tide
Mon -- 03:52 PM EST     Moonrise
Mon -- 05:24 PM EST     Sunset
Mon -- 07:24 PM EST     5.74 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.41.12.33.7566.46.15.23.82.51.30.70.91.72.84.15.15.75.64.93.62.2

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Mon -- 01:58 AM EST     0.00 knots Slack
Mon -- 04:31 AM EST     Moonset
Mon -- 04:42 AM EST     2.17 knots Max Flood
Mon -- 07:10 AM EST     Sunrise
Mon -- 08:06 AM EST     -0.00 knots Slack
Mon -- 10:46 AM EST     -1.96 knots Max Ebb
Mon -- 02:50 PM EST     0.00 knots Slack
Mon -- 03:51 PM EST     Moonrise
Mon -- 05:10 PM EST     1.52 knots Max Flood
Mon -- 05:24 PM EST     Sunset
Mon -- 08:15 PM EST     -0.00 knots Slack
Mon -- 10:54 PM EST     -1.94 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.5-0.901.222.11.81.20.1-1.1-1.8-1.9-1.8-1.5-0.80.21.11.51.410.3-0.8-1.7-1.9

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (21,6,7,8)
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Ground Weather Radar Station Jacksonville, FL
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