Thursday, June20, 2019 L-36.com


Marine Weather and Tides
St. Marks, FL

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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 6:33AMSunset 8:43PM Thursday June 20, 2019 7:07 PM EDT (23:07 UTC) Moonrise 10:30PMMoonset 8:26AM Illumination 88% Phase: Waning Gibbous; Moon at 18 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- 314 Pm Edt Thu Jun 20 2019 /214 Pm Cdt Thu Jun 20 2019/
.small craft advisory in effect until 10 pm edt /9 pm cdt/ this evening...
Tonight..Southwest winds around 20 knots becoming 15 to 20 knots late. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 5 seconds. Protected waters choppy. Slight chance of showers and Thunderstorms.
Friday..Southwest winds 15 knots. Seas 2 to 4 feet. Dominant period 5 seconds. Protected waters a moderate chop. Slight chance of showers and Thunderstorms in the morning.
Friday night..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Protected waters a light chop.
Saturday through Monday..Southwest winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Protected waters a light to moderate chop.
Monday night and Tuesday..West winds 10 knots. Seas 1 to 2 feet. Protected waters a light chop.
GMZ700 Synopsis For The Suwannee River To Okaloosa-walton County Line Out To 60 Nm 314 Pm Edt Thu Jun 20 2019
Synopsis..Borderline advisory conditions are forecast through this evening, with a decreasing trend expected through the weekend. Showers and storms will become less and less likely through the weekend as well.


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 201912
afdtae
area forecast discussion
national weather service tallahassee fl
312 pm edt Thu jun 20 2019

Near term [through tonight]
Current model guidance suggests storm coverage should decrease in
coverage across SE alabama and SW georgia by 3z. The current
environment is favorable for some storms to produce strong wind
gusts and small hail. Model guidance is hinting at mid to low level
dry air behind the approaching shortwave trough aiding in producing
a broad region of greater than 1500 j kg of dcape, which will
enhance any strong downbursts produced by these storms later in the
evening. Ecams are suggesting that the storms will generally remain
multicellular and sag south towards the florida line before
dissipating as forcing decreases into the evening hours. Flooding
concerns remain low as storm motion will likely be progressive
through the region. If the line of storms does maintain itself into
florida, the potential for flooding will be higher as storm motion
in this region will be more favorable for training storms.

Short term [Friday through Saturday night]
Deep layer ridging will build back in to end the week and will
prevail through the weekend. This will result in more seasonable
rain chances, possibly even lower than normal as a pocket of dry
air rotates out of the gulf this weekend. While there won't be as
much rain, southwesterly flow will pair with highs in the middle
90s to yield heat indices over 105 for the next couple of
afternoons.

Long term [Sunday through Thursday]
While pops will still be near or just below normal Sunday and
Monday, the greatest chances will be east of a line from albany
through perry as weak lee troughing may tap into an upper level
wave and result in convection drifting into this region late
afternoon evening. That same upper level wave will then linger
over the southeast through the remainder of the week resulting in
higher than normal rain chances.

Aviation
[through 18z Friday]
a developing line of thunderstorms across central alabama and
georgia associated with an approaching shortwave trough will be
sagging south across our northern area late this afternoon and
into the evening. So far model guidance has this only impacting
dhn, aby, and vld sites as it progresses south and eastward. Gusty
winds and small hail will be possible with these storms. Cams are
also suggesting that MVFR level CIGS will develop across these
same three sites in the early morning hours around 0900-1200 utc.

Marine
Borderline advisory conditions are forecast through this evening,
with a decreasing trend expected through the weekend. Showers and
storms will become less and less likely through the weekend as
well.

Fire weather
Hazardous fire weather conditions are not forecast over the next
few days, though a drying trend is expected.

Hydrology
Rainfall amounts over the next few days will be typical for the
summertime and don't trigger any flooding concerns. Around mid-
week next week rain chances will increase again with the potential
for a couple of inches of widespread average rain amounts.

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 93 75 94 75 30 30 10 20 20
panama city 79 88 80 89 78 30 20 0 10 10
dothan 74 93 76 93 75 40 20 10 20 20
albany 76 93 76 93 76 50 10 10 30 30
valdosta 74 93 75 94 76 30 30 10 20 20
cross city 76 90 77 91 75 20 20 10 10 20
apalachicola 78 89 79 90 78 20 20 0 10 10

Tae watches warnings advisories
Fl... High rip current risk until 2 am edt 1 am cdt Friday for
coastal bay-coastal franklin-coastal gulf-south walton.

Ga... None.

Al... None.

Gm... Small craft advisory until 10 pm edt 9 pm cdt this evening for
apalachee bay or coastal waters from keaton beach to
ochlockonee river fl out to 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-
coastal waters from mexico beach to apalachicola fl out 20
nm-coastal waters from mexico beach to okaloosa walton
county line fl out 20 nm-waters from suwannee river to
apalachicola fl from 20 to 60 nm-waters from apalachicola
to mexico beach fl from 20 to 60 nm-waters from mexico
beach to okaloosa walton county line fl from 20 to 60 nm.

Near term... Bunker
short term... Harrigan
long term... Harrigan
aviation... Bunker
marine... Harrigan
fire weather... Harrigan
hydrology... Harrigan


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SHPF1 - SHP - Shell Point, FL 15 mi133 min SW 19 G 23 86°F 80°F1012.8 hPa
KTNF1 - Keaton Beach, FL 28 mi67 min SW 19 G 22 84°F 1014.7 hPa (-0.3)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 mi72 minSW 15 G 2010.00 miMostly Cloudy87°F79°F78%1014.2 hPa

Wind History from 40J (wind in knots)
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1 day agoSW4CalmSW3CalmS4S4CalmS3S3SW3SW4SW4SW4SW4SW8SW12
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2 days agoSE5SE3E3SE4CalmSE3E4E3CalmCalmE3E3E3SE3SE4SE4SE5NE8CalmW6SW13SW9W11SW7

Tide / Current Tables for Aucilla River entrance, Florida
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Aucilla River entrance
Click for Map
Thu -- 05:20 AM EDT     2.97 feet High Tide
Thu -- 06:34 AM EDT     Sunrise
Thu -- 09:26 AM EDT     Moonset
Thu -- 10:22 AM EDT     1.49 feet Low Tide
Thu -- 04:14 PM EDT     3.54 feet High Tide
Thu -- 08:40 PM EDT     Sunset
Thu -- 11:30 PM EDT     Moonrise
Thu -- 11:35 PM EDT     -0.06 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.10.51.222.732.92.62.11.71.51.51.82.32.93.33.53.53.12.51.710.4-0

Tide / Current Tables for St. Marks River Entrance, Florida
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St. Marks River Entrance
Click for Map
Thu -- 05:17 AM EDT     3.20 feet High Tide
Thu -- 06:35 AM EDT     Sunrise
Thu -- 09:26 AM EDT     Moonset
Thu -- 10:17 AM EDT     1.62 feet Low Tide
Thu -- 04:11 PM EDT     3.81 feet High Tide
Thu -- 08:40 PM EDT     Sunset
Thu -- 11:30 PM EDT     -0.07 feet Low Tide
Thu -- 11:31 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-00.61.42.22.93.23.12.82.31.91.61.722.63.13.63.83.73.32.61.810.3-0

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (19,4,5,8)
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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.