Sunday, August20, 2017 L-36.com


Marine Weather and Tides
St. Marks, FL

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:06AMSunset 8:14PM Sunday August 20, 2017 11:28 AM EDT (15:28 UTC) Moonrise 4:47AMMoonset 6:33PM Illumination 3% Phase: Waning Crescent; Moon at 28 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 Apalachicola To Destin Fl Out 20 Nm- Coastal Waters From Ochlockonee River To Apalachicola Fl Out To 20 Nm- Coastal Waters From Suwannee River To Keaton Beach Out 20 Nm- Waters From Apalachicola To Destin Fl From 20 To 60 Nm- Waters From Suwannee River To Apalachicola Fl From 20 To 60 Nm- 951 Am Edt Sun Aug 20 2017
Rest of today..East winds 5 to 10 knots becoming southeast 5 to 10 knots in the afternoon. Seas 1 foot. Dominant period 3 seconds. Protected waters mostly smooth. Slight chance of showers and Thunderstorms.
Tonight..East winds 5 to 10 knots. Seas 1 foot. Dominant period 3 seconds. Protected waters mostly smooth. Slight chance of showers and Thunderstorms in the evening, then chance of showers and Thunderstorms after midnight.
Monday..Southeast winds 10 knots. Seas 1 to 2 feet. Dominant period 3 seconds. Protected waters a light chop. Chance of showers and Thunderstorms in the morning, then slight chance of showers and Thunderstorms in the afternoon.
Monday night..East winds 10 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Protected waters a light chop. Slight chance of showers and Thunderstorms in the evening, then chance of showers and Thunderstorms after midnight.
Tuesday..South winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Protected waters a light chop. Chance of showers and Thunderstorms in the morning, then slight chance of showers and Thunderstorms in the afternoon.
Tuesday night..South winds 5 to 10 knots early in the evening becoming light and variable winds, then becoming north 5 to 10 knots after midnight. Seas 1 to 2 feet. Protected waters smooth. Slight chance of showers and Thunderstorms.
Wednesday..Northeast winds 5 to 10 knots becoming east 5 to 10 knots late in the morning, then becoming southeast around 5 knots early in the afternoon becoming west 5 to 10 knots late in the afternoon. Seas 1 to 2 feet. Protected waters smooth. Chance of showers and Thunderstorms.
Wednesday night..Northwest winds 5 to 10 knots. Seas 1 foot. Protected waters smooth. Chance of showers and Thunderstorms.
Thursday..North winds 5 to 10 knots becoming southeast in the late morning and early afternoon, then becoming south 5 to 10 knots late in the afternoon. Seas 1 foot or less. Protected waters smooth. Chance of showers and Thunderstorms.
GMZ700 Synopsis For The Suwannee River To Destin Out To 60 Nm 951 Am Edt Sun Aug 20 2017
Synopsis..Generally light winds will continue through the period resulting in low seas. Isolated showers and storms are possible each day, especially in the overnight hours.

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 201355
afdtae
area forecast discussion
national weather service tallahassee fl
955 am edt Sun aug 20 2017

Near term [through today]
While low-level flow has become more easterly today, the
atmosphere remains rather dry, with pwat below 1.8 inches. In
addition, upper low spinning over the northeastern gulf will help
to supress convection a bit today as well. Therefore, expect dry
conditions for much of the forecast area. Exception may be the
eastern big bend, where easterly flow and approach of tropical
wave by late in the day may push some showers and thunderstorms
into the region. Temperatures will remain hot, with highs in the
mid 90s.

Prev discussion [652 am edt]
Short term [tonight through Tuesday]
Tutt low will continue to move westward towards the upper texas
coast by late Tuesday. East to west mid level ridging will build
across the southeast us into the mid south. Deep east to southeast
flow will advect tropical moisture into the southeast and
overspreading the region this period. Column moisture and pwats
will increase leading to near normal (40-50%) chances for
rainfall for mid august especially in the afternoon and early
evening hours. High temperatures will be more towards the low 90s
with anticipated cloud cover and rainfall Monday Tuesday.

Long term [Tuesday night through Sunday]
Ridging shifts towards the gulf coast in response to a deepening
and digging east us trough. This trough will support a front that
will make a run at the southeast towards the end of the work week
and into next weekend. Increasing rain chances is expected with
favorable moisture levels and mid upper level support. 50-60%
chance for rainfall is expected each afternoon Thursday through
Sunday. Highs will be in the upper 80s to lower 90s.

Aviation [through 12z Monday]
Ifr conditions currently being observed at vld at this hour.

Expect vsby and CIGS to improve within a few hours after sunrise.

Otherwise,VFR conditions expected through the period at all taf
sites. Light southeasterly winds will prevail today, with a chance
of iso to sct tsra developing around vld this afternoon.

Marine
Generally light winds will continue through the period resulting
in low seas. Isolated showers and storms are possible each day,
especially in the overnight hours.

Fire weather
Outside of marginally low dispersions across the big bend of florida
this afternoon, hazardous fire weather conditions are not expected
through the next week.

Hydrology
Only isolated showers and thunderstorms are expected through
Sunday. Rain chances will increase to near normal levels on Monday
through Wednesday, when some localized flooding in urban areas
would be possible with the strongest storms. However, coverage
will not be sufficient to result in any river flooding.

Preliminary point temps pops
Tallahassee 95 75 92 75 92 20 20 50 20 30
panama city 93 78 90 77 89 20 20 40 20 30
dothan 96 75 93 74 90 10 10 50 20 30
albany 96 75 93 74 92 10 10 40 20 30
valdosta 95 74 91 73 92 50 30 40 20 30
cross city 95 74 91 74 92 40 30 40 20 10
apalachicola 91 77 90 77 89 10 30 30 30 30

Tae watches warnings advisories
Fl... High rip current risk through this evening for coastal gulf.

Ga... None.

Al... None.

Gm... None.

Near term... Camp
short term... Scholl
long term... Scholl
aviation... Pullin
marine... Scholl
fire weather... Pullin
hydrology... Godsey


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SHPF1 - SHP - Shell Point, FL 15 mi94 min NE 1.9 G 5.1 85°F 1017 hPa
KTNF1 - Keaton Beach, FL 28 mi28 min Calm G 1 87°F 1017.8 hPa (+1.3)
APXF1 - Apalachicola Reserve, FL 51 mi103 min NNE 5.1 85°F 79°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 mi53 minN 010.00 miFair88°F76°F68%1017.9 hPa

Wind History from 40J (wind in knots)
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Last 24hrNE7NE6CalmCalmN4CalmN3W3W4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoNE4N5N5SW12S7E5S4S6S6S4S3CalmCalmCalmCalmCalmCalmCalmSE4SE3CalmCalmW19
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2 days agoNW3W4N4NW6NW6CalmSW10SW7CalmS4CalmCalmCalmCalmCalmCalmCalmW4CalmCalmCalmN4N6N7

Tide / Current Tables for Aucilla River entrance, Florida
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Aucilla River entrance
Click for Map
Sun -- 02:20 AM EDT     3.29 feet High Tide
Sun -- 05:47 AM EDT     Moonrise
Sun -- 07:06 AM EDT     Sunrise
Sun -- 07:38 AM EDT     1.35 feet Low Tide
Sun -- 01:42 PM EDT     3.91 feet High Tide
Sun -- 07:32 PM EDT     Moonset
Sun -- 08:11 PM EDT     Sunset
Sun -- 08:44 PM EDT     -0.24 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.22.93.33.22.82.31.81.41.41.62.22.83.43.83.93.632.11.20.4-0.1-0.20.10.8

Tide / Current Tables for St. Marks River Entrance, Florida
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St. Marks River Entrance
Click for Map
Sun -- 02:18 AM EDT     3.54 feet High Tide
Sun -- 05:48 AM EDT     Moonrise
Sun -- 07:07 AM EDT     Sunrise
Sun -- 07:33 AM EDT     1.47 feet Low Tide
Sun -- 01:39 PM EDT     4.21 feet High Tide
Sun -- 07:33 PM EDT     Moonset
Sun -- 08:12 PM EDT     Sunset
Sun -- 08:39 PM EDT     -0.26 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.53.23.53.432.41.91.51.51.82.43.13.74.14.23.83.12.21.20.4-0.2-0.20.20.9

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for (11,2,3,4)
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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.