Saturday, December7, 2019
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Marine Weather and Tides
St. Marks, FL

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 7:19AMSunset 5:37PM Saturday December 7, 2019 9:49 AM EST (14:49 UTC) Moonrise 2:57PMMoonset 2:52AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 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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GMZ730 Apalachee Bay Or Coastal Waters From Keaton Beach To Ochlockonee River Fl Out To 20 Nm- Coastal Waters From Suwannee River To Keaton Beach Fl Out 20 Nm- 302 Am Est Sat Dec 7 2019
Today..East winds 10 knots. Seas 1 foot or less. Dominant period 2 seconds. Protected waters a light chop. Chance of rain showers.
Tonight..East winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 2 seconds. Protected waters a light chop.
Sunday..East winds 10 knots. Seas 1 to 2 feet. Dominant period 3 seconds. Protected waters a light chop.
Sunday night..Southeast winds 10 knots. Seas 1 to 2 feet. Dominant period 3 seconds. Protected waters a light chop.
Monday..South winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 3 seconds. Protected waters a light chop. Slight chance of showers.
Monday night..South winds 10 knots. Seas 1 to 2 feet. Protected waters a light chop.
Tuesday..South winds 10 knots. Seas 1 to 2 feet. Protected waters a light chop. Slight chance of showers.
Tuesday night..Southwest winds 5 to 10 knots becoming north 10 knots early in the morning. Seas 1 to 2 feet. Protected waters mostly smooth. Chance of showers.
Wednesday..North winds 15 knots. Seas 1 to 2 feet. Protected waters a moderate chop. Chance of showers.
GMZ700 Synopsis For The Suwannee River To Okaloosa-walton County Line Out To 60 Nm 302 Am Est Sat Dec 7 2019
Synopsis.. A weak area of low pressure over the northeast gulf will keep winds and seas somewhat elevated through Sunday. Winds are expected to veer to southwesterly ahead of a cold front early next week. Winds and seas will likely increase again to advisory levels by the middle of the week.


7 Day Forecast for Marine Location Near St. Marks, FL
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location: 30.08, -84     debug


Area Discussion for -
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FXUS62 KTAE 071024 AFDTAE

Area Forecast Discussion National Weather Service Tallahassee FL 524 AM EST Sat Dec 7 2019

AVIATION.

[Through 12z Sunday] Patchy low clouds will affect the region through this morning with occasional MVFR ceilings. Ceilings are expected to rise to VFR during the afternoon. Scattered showers are expected to be near ECP and TLH in association with a weak area of low pressure over the northeast Gulf. A round of MVFR to IFR ceilings is possible late tonight around VLD and TLH.

PREV DISCUSSION [256 AM EST].

NEAR TERM [Through Today].

A weak area of low pressure just offshore of the Florida panhandle will contribute to mostly cloudy skies across the area today with scattered showers across the southern half of the area. The heaviest rainfall and greater instability is expected to remain just offshore, where a few thunderstorms could occur. High temperatures are expected to be mostly in the 60s.

SHORT TERM [Tonight Through Monday].

Low pressure will weaken and lift northward through the short term. The flow will become southerly to southwesterly from the surface through around 700 mb with moisture advecting northward from the Gulf. Weak upper level vort maxima traversing the area will aid in keeping a chance of mainly light showers across portions of the area through Monday. Temperatures will be on a warming trend with southerly flow.

LONG TERM [Monday Night Through Saturday].

Models are in reasonable agreement on another cold front moving through the area in the Tuesday through Wednesday time frame with a round of showers. Instability and dynamics do not look overly impressive with this system, so thunderstorms were kept out of the forecast. The forecast becomes more uncertain towards the end of the week with some models showing a rather strong system affecting the southeast states with the potential for a Gulf coast low. However, there is not yet strong agreement on the track and strength of this potential system. Should the low track west of the area, we may have a low CAPE/high shear severe weather threat by the end of the week. However, the low could also track over the area or to the south, which would keep us on the cooler side of the system with just widespread rain.

MARINE.

A weak area of low pressure over the northeast Gulf will keep winds and seas somewhat elevated through Sunday. Winds are expected to veer to southwesterly ahead of a cold front early next week. Winds and seas will likely increase again to advisory levels by the middle of the week.

FIRE WEATHER.

Red flag conditions are not expected for the next several days.

HYDROLOGY.

Rainfall amounts over the next several days are expected to be mainly on the light side. By the end of the week, the possibility exists for a round of heavier rainfall, but flooding is not currently expected.

SPOTTER INFORMATION STATEMENT.

Spotter activation is not requested. However, spotters are always encouraged to safely report significant weather conditions when they occur by calling the office or tweeting us @NWSTallahassee.

PRELIMINARY POINT TEMPS/POPS.

Tallahassee 65 52 71 58 76 / 40 10 10 20 30 Panama City 68 57 70 62 75 / 40 10 40 40 40 Dothan 64 51 66 57 75 / 20 10 20 40 30 Albany 65 50 66 56 75 / 10 0 10 20 30 Valdosta 68 51 70 56 77 / 20 10 10 10 10 Cross City 69 54 74 58 78 / 30 10 10 0 0 Apalachicola 68 58 69 63 74 / 60 20 20 30 40

TAE WATCHES/WARNINGS/ADVISORIES. FL . None. GA . None. AL . None. GM . None.

NEAR TERM . DVD SHORT TERM . DVD LONG TERM . DVD AVIATION . DVD MARINE . DVD FIRE WEATHER . DVD HYDROLOGY . DVD


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SHPF1 - SHP - Shell Point, FL 15 mi115 min NNE 4.1 G 7 57°F 1021.1 hPa
KTNF1 - Keaton Beach, FL 28 mi49 min ENE 8 G 9.9 55°F 1022.3 hPa (+1.5)50°F
APXF1 - Apalachicola Reserve, FL 51 mi64 min NNE 7 1022 hPa

Wind History for Apalachicola, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Perry-Foley, Perry-Foley Airport, FL23 mi74 minE 510.00 miOvercast58°F47°F68%1022.3 hPa

Link to 5 minute data for K40J

Wind History from 40J (wind in knots)
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Last 24hrSE4SW6SW4W9W6SW4W3SW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3CalmCalmE3SE5Calm
1 day agoNE6NE4NE3CalmN3N4N3SW6CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoNW8NW6N5NW6NW9W11W9SW5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN5

Tide / Current Tables for Aucilla River entrance, Florida
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Aucilla River entrance
Click for Map
Sat -- 02:52 AM EST     Moonset
Sat -- 05:08 AM EST     0.53 feet Low Tide
Sat -- 07:18 AM EST     Sunrise
Sat -- 11:26 AM EST     2.43 feet High Tide
Sat -- 02:57 PM EST     Moonrise
Sat -- 04:55 PM EST     1.04 feet Low Tide
Sat -- 05:35 PM EST     Sunset
Sat -- 11:00 PM EST     2.74 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.31.91.510.70.50.60.91.31.82.22.42.42.21.81.41.111.21.51.92.32.62.7

Tide / Current Tables for St. Marks River Entrance, Florida
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St. Marks River Entrance
Click for Map
Sat -- 02:52 AM EST     Moonset
Sat -- 05:03 AM EST     0.58 feet Low Tide
Sat -- 07:19 AM EST     Sunrise
Sat -- 11:23 AM EST     2.62 feet High Tide
Sat -- 02:57 PM EST     Moonrise
Sat -- 04:50 PM EST     1.13 feet Low Tide
Sat -- 05:36 PM EST     Sunset
Sat -- 10:57 PM EST     2.95 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.52.11.51.10.70.60.711.522.42.62.62.31.91.51.21.11.31.62.12.52.82.9

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 (9,2,3,4)
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Ground Weather Radar Station Tallahassee, FL
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Gulf Stream Current


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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.