Saturday, June23, 2018 L-36.com


Marine Weather and Tides
St. Marks, FL

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 6:34AMSunset 8:44PM Saturday June 23, 2018 5:24 PM EDT (21:24 UTC) Moonrise 3:45PMMoonset 2:33AM Illumination 80% Phase: Waxing Gibbous; Moon at 10 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 Mexico Beach To Okaloosa Walton County Line Fl Out 20 Nm- Coastal Waters From Mexico Beach To Apalachicola Fl Out 20 Nm- Coastal Waters From Ochlockonee River To Apalachicola Fl Out To 20 Nm- Coastal Waters From Suwannee River To Keaton Beach Fl Out 20 Nm- Waters From Mexico Beach To Okaloosa Walton County Line Fl From 20 To 60 Nm- Waters From Apalachicola To Mexico Beach Fl From 20 To 60 Nm- Waters From Suwannee River To Apalachicola Fl From 20 To 60 Nm- 246 Pm Edt Sat Jun 23 2018
Tonight..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Protected waters a light to moderate chop.
Sunday through Sunday night..West winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Protected waters smooth. Slight chance of showers and Thunderstorms.
Monday..North winds 5 to 10 knots becoming south 5 to 10 knots in the afternoon. Seas 1 foot. Dominant period 4 seconds. Protected waters mostly smooth. Slight chance of showers and Thunderstorms.
Monday night..Southwest winds 5 to 10 knots in the evening becoming light and variable winds. Seas 1 foot. Dominant period 4 seconds. Protected waters smooth. Slight chance of showers and Thunderstorms through the night.
Tuesday..Light and variable winds becoming southwest 5 to 10 knots in the afternoon. Seas 1 foot. Protected waters smooth. Chance of showers and Thunderstorms.
Tuesday night through Wednesday..West winds 5 to 10 knots. Seas 1 foot. Protected waters smooth. Chance of showers and Thunderstorms.
Wednesday night..West winds 10 knots. Seas 1 foot. Protected waters a light chop. Chance of showers and Thunderstorms.
Thursday..West winds 10 knots. Seas 1 foot. Protected waters a light chop. Chance of showers and Thunderstorms.
GMZ700 Synopsis For The Suwannee River To Okaloosa-walton County Line Out To 60 Nm 246 Pm Edt Sat Jun 23 2018
Synopsis..Light to moderate southwesterly winds will continue through Sunday. Winds will be light and variable on Monday and Tuesday. Seas will be low...mostly 1 to 2 feet.

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 231855
afdtae
area forecast discussion
national weather service tallahassee fl
255 pm edt Sat jun 23 2018

Near term [through tonight]
Slightly drier air is in place today with pw values around 1.6-1.7"
and this has helped to limit some of the convection across the cwa
this afternoon. With a weak shortwave north of the CWA though and
storms expected to develop over arkansas tn valley area and move
east southeast some of these storms could move across the
northeastern portions of the CWA early tonight as they are
weakening. There isn't great agreement in the hi-res models on this,
but enough evidence to include the mention of low-end pops into the
tonight period across the north. The remainder of any isolated
showers and thunderstorms that develop as typical summertime
convection will quickly diminish with the loss of daytime heating.

Expect lows in the mid to upper 70s tonight. Forecast low for
tonight at tlh is one degree below the record high minimum
temperature for Sunday morning (76 degrees set in 1930).

Short term [Sunday through Monday night]
In the upper levels nearly zonal flow will be present tomorrow. By
tomorrow night a ridge will build into the southeast. At the surface
a weak pressure gradient will be over the southeast. On Monday a
weak low or remnants of a surface boundary may help increase shower
and thunderstorm coverage. On Sunday pops will be 20 to 40 percent
in the florida counties and south central georgia. Pops will be
lower elsewhere. On Monday pops will be 30 to 40 percent in the
afternoon evening. Highs will be in the 90s. Lows will be in the mid
to upper 70s.

Long term [Tuesday through Saturday]
In the upper levels a ridge will be over the southeast. At the
surface a weak pressure gradient will be in place and possibly a
weak low towards the end of the week. Pops will be higher with
daytime pops of 40 to 60 percent. Nighttime pops will be 30 to 50
percent. Lows will be in the mid 70s.

Aviation [through 18z Sunday]
Isolated tsra is possible around the TAF sites this afternoon but
besides the mention of vcsh at ecp based on radar trends, overall
chances are too low to mention in the tafs. There is some hint at
MVFR CIGS Sunday morning across dhn, aby and vld, but will hold off
on adding for now given lower probability.

Marine
Light to moderate southwesterly winds will continue through Sunday.

Winds will be light and variable on Monday and Tuesday. Seas will be
low, mostly 1 to 2 feet.

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

Hydrology
A wet pattern will return next week. Local rivers are steady or
falling at this time. QPF over the next seven days is 1 to 2 inches.

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 75 95 76 96 76 10 30 10 30 30
panama city 79 90 78 92 78 10 20 0 30 20
dothan 75 93 75 94 76 10 10 10 30 20
albany 76 96 76 96 77 20 10 10 30 30
valdosta 74 95 75 95 76 20 20 20 40 40
cross city 76 92 75 93 76 10 40 20 30 30
apalachicola 78 90 78 91 78 10 20 10 20 20

Tae watches warnings advisories
Fl... High rip current risk through late tonight for coastal bay-
coastal gulf-south walton.

Ga... None.

Al... None.

Gm... None.

Near term... Fieux
short term... Mcd
long term... Mcd
aviation... Fieux
marine... Mcd
fire weather... Dvd
hydrology... Mcd


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SHPF1 - SHP - Shell Point, FL 15 mi91 min SSW 15 G 18 88°F 1013.5 hPa
KTNF1 - Keaton Beach, FL 28 mi85 min WSW 14 G 15 85°F 1015.2 hPa (-1.7)76°F
APXF1 - Apalachicola Reserve, FL 51 mi100 min WSW 9.9 92°F 75°F

Wind History for Apalachicola, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Perry-Foley, Perry-Foley Airport, FL23 mi50 minWSW 810.00 miMostly Cloudy93°F75°F58%1014.6 hPa

Wind History from 40J (wind in knots)
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Last 24hrSW12
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SW10SW9SW7SW6W4SW4SW4SW3W3SW3W3CalmCalmW7W8
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1 day agoW8SW7SW10W9W4SW4W5W3W3SW3CalmN4W3CalmCalmW4W8W10W7W7W10
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NW4SW9SW10
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2 days agoSW8SW8W6SW4NE10
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CalmCalmCalmCalmCalmCalmCalmCalmNW3CalmNW5NW5W7NW8W4NW5SW7SW11SW8
G13

Tide / Current Tables for Aucilla River entrance, Florida
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Aucilla River entrance
Click for Map
Sat -- 03:33 AM EDT     Moonset
Sat -- 05:03 AM EDT     1.52 feet Low Tide
Sat -- 06:35 AM EDT     Sunrise
Sat -- 11:36 AM EDT     3.19 feet High Tide
Sat -- 04:45 PM EDT     Moonrise
Sat -- 06:37 PM EDT     0.42 feet Low Tide
Sat -- 08:40 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.52.42.11.81.61.51.61.82.22.62.93.13.232.51.91.30.80.50.40.71.11.72.1

Tide / Current Tables for St. Marks River Entrance, Florida
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St. Marks River Entrance
Click for Map
Sat -- 03:33 AM EDT     Moonset
Sat -- 04:58 AM EDT     1.66 feet Low Tide
Sat -- 06:36 AM EDT     Sunrise
Sat -- 11:33 AM EDT     3.43 feet High Tide
Sat -- 04:45 PM EDT     Moonrise
Sat -- 06:32 PM EDT     0.46 feet Low Tide
Sat -- 08:41 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.62.52.321.71.71.722.42.83.23.43.43.22.721.40.80.50.50.81.21.82.3

Weather Map and Satellite Images
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wmap_A
GOES 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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (17,4,5,8)
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Ground Weather Radar Station Tallahassee, FL
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weather_mapweather_map weather_map

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.