Thursday, May25, 2017 L-36.com


Marine Weather and Tides
St. Marks, FL

Version 3.4
What's New / NOTES
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 6:35AMSunset 8:32PM Thursday May 25, 2017 2:23 PM EDT (18:23 UTC) Moonrise 5:40AMMoonset 7:28PM Illumination 0% Phase: New Moon; Moon at 0 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- 1029 Am Edt Thu May 25 2017
.small craft should exercise caution...
Rest of today..West winds 15 to 20 knots. Seas 4 to 6 feet. Dominant period 5 seconds. Protected waters choppy.
Tonight..West winds 10 knots. Seas 2 to 4 feet. Dominant period 5 seconds. Protected waters a light chop.
Friday..Southwest winds 10 knots. Seas 2 to 3 feet. Dominant period 5 seconds. Protected waters a light chop.
Friday night..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Protected waters a light chop.
Saturday..Southwest winds 10 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Protected waters a light chop.
Saturday night..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Protected waters a light chop.
Sunday and Sunday night..Southwest winds 10 to 15 knots. Seas 1 to 2 feet. Protected waters a light chop.
Monday..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Protected waters a light chop. Slight chance of showers and Thunderstorms.
GMZ700 Synopsis For The Suwannee River To Destin Out To 60 Nm 1029 Am Edt Thu May 25 2017
Synopsis..Small craft operators are encouraged to exercise caution through the remainder of the today as westerly winds gradually fall to below 15 knots by this evening. Winds and seas should remain light through the rest of the period.

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 251713
afdtae
area forecast discussion
national weather service tallahassee fl
113 pm edt Thu may 25 2017

Aviation [through 18z Friday]
Vfr conditions prevailing through the period. Gusty NW winds will
diminish this evening becoming light overnight. Winds tomorrow
will generally be westerly under 10 kts.

Prev discussion [852 am edt]
Near term [through today]
A deep upper level trough will gradually move eastward across our
area today with westerly northwesterly flow in its wake bringing
progressively drier air into our region. Dry conditions are
anticipated throughout the day. Westerly winds will increase to
around 10-15 mph during the afternoon with a few gusts around 20
mph possible. Cool air advection in the wake of the cold front
will lead to very pleasant temperatures for late may in our area,
with morning lows in the upper 50s to lower 60s and highs ranging
from the upper 70s to lower 80s.

Short term [tonight through Saturday]
Deep layer ridging will build in across the area, bringing a quiet
start to the weekend. Overnight temperatures will be cooler than
average tonight and about average tomorrow night, with lows in the
50s tonight and in the 60s tomorrow night. Highs will warm back up
to the mid to upper 80s Friday, upper 80s to low 90s Saturday, with
low 80s along the immediate coast both days.

Long term [Saturday night through Thursday]
Upper level troughing will move into the great lakes early next
week, developing a frontal system which will stall and then dissipate
to our north by mid-week. This system will bring a return for 20-40%
chances for showers and thunderstorms to the area starting Monday,
with the highest chances over our northwestern zones. Highs will be
mostly in the upper 80s to low 90s and lows will be around 70.

Marine
A small craft advisory will remain in effect through the late
morning. Small craft operators are encouraged to continue to
exercise caution through the remainder of the today as westerly
winds gradually fall to below 15 knots by this evening. Winds and
seas should remain light through the rest of the period.

Fire weather
High dispersion values are possible this afternoon along with
decreasing rh values as drier air moves into our area. However, rh
should still remain above critical thresholds with minimum values
around 30-40 percent today. Therefore, no red flag conditions are
anticipated.

Hydrology
Most of the area has picked up about 2-4" of rain over the last
week. As much of the area has been parched, particularly south-
central ga and the fl big bend, this rainfall has been welcome
relief. No river flooding is occuring or forecast to occur. The
highest rise is along the kinchafoonee creek near dawson, which is
currently in action stage and will rise to around 6.5 ft this
morning before falling.

Preliminary point temps pops
Tallahassee 55 88 66 91 70 0 0 0 0 10
panama city 65 81 74 83 76 0 0 0 0 10
dothan 56 88 64 90 72 0 0 0 0 10
albany 55 87 65 91 71 0 0 0 0 10
valdosta 55 87 64 92 70 0 0 0 0 0
cross city 58 85 68 88 70 0 0 0 0 0
apalachicola 65 83 73 85 75 0 0 0 0 10

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

Ga... None.

Al... None.

Gm... None.

Near term... Barry
short term... Lahr
long term... Moore
aviation... Humphreys
marine... Lahr
fire weather... Moore
hydrology... Lahr


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SHPF1 - SHP - Shell Point, FL 15 mi149 min WNW 14 G 21 73°F 1010.8 hPa
KTNF1 - Keaton Beach, FL 28 mi83 min WNW 12 G 16 72°F 1011.4 hPa (+0.3)

Wind History for Apalachicola, FL
(wind in knots)    EDIT      (on/off)   Help
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SW14
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SW16
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G28
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S9
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Perry-Foley, Perry-Foley Airport, FL23 mi48 minW 9 G 1810.00 miFair78°F51°F40%1011.5 hPa

Wind History from 40J (wind in knots)
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Last 24hrSW10SW12
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W9W8W5W5CalmNW5W5W5CalmNW7NW9W12
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1 day agoS18
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SW11SW7W4SW6SW9
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SW7SW7SW5S5SW4W4SW8
G20
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SW8
2 days agoSW11SW11SW14SW11SW10
G15
SW8S5S4SW5CalmCalmS3SE3S3CalmS3SW4S4S5S5SW10
G16
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G18
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G16

Tide / Current Tables for Aucilla River entrance, Florida
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Aucilla River entrance
Click for Map
Thu -- 03:02 AM EDT     3.44 feet High Tide
Thu -- 06:37 AM EDT     Sunrise
Thu -- 06:39 AM EDT     Moonrise
Thu -- 08:23 AM EDT     1.10 feet Low Tide
Thu -- 02:15 PM EDT     3.91 feet High Tide
Thu -- 03:46 PM EDT     New Moon
Thu -- 08:27 PM EDT     Moonset
Thu -- 08:28 PM EDT     Sunset
Thu -- 09:21 PM EDT     -0.79 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.62.53.23.43.22.721.51.11.21.62.233.63.93.83.32.41.40.4-0.4-0.8-0.7-0.2

Tide / Current Tables for St. Marks River Entrance, Florida
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St. Marks River Entrance
Click for Map
Thu -- 02:59 AM EDT     3.70 feet High Tide
Thu -- 06:37 AM EDT     Sunrise
Thu -- 06:40 AM EDT     Moonrise
Thu -- 08:18 AM EDT     1.20 feet Low Tide
Thu -- 02:12 PM EDT     4.20 feet High Tide
Thu -- 03:46 PM EDT     New Moon
Thu -- 08:27 PM EDT     Moonset
Thu -- 08:29 PM EDT     Sunset
Thu -- 09:16 PM EDT     -0.86 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.82.83.53.73.52.92.21.51.21.31.82.53.33.94.24.13.52.51.40.4-0.5-0.8-0.7-0.1

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 (14,3,4,5)
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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.