Thursday, April26, 2018 L-36.com


Marine Weather and Tides
Port St. Joe, FL

Version 3.4
What's New / NOTES
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.
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.

Sunrise 6:01AMSunset 7:18PM Thursday April 26, 2018 6:13 AM CDT (11:13 UTC) Moonrise 4:10PMMoonset 4:10AM Illumination 85% 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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GMZ750 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- 339 Am Edt Thu Apr 26 2018
.small craft operators should exercise caution...
Today..Southwest winds 15 to 20 knots. Seas 2 to 3 feet. Dominant period 3 seconds. Protected waters becoming choppy. Slight chance of showers and isolated Thunderstorms in the afternoon.
Tonight..West winds around 15 knots becoming northwest 10 to 15 knots late. Seas 2 to 4 feet. Dominant period 5 seconds. Protected waters a moderate chop. Slight chance of showers after midnight.
Friday and Friday night..Northwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Protected waters a light chop.
Saturday..North winds 5 to 10 knots becoming onshore around 10 knots in the afternoon. Seas 1 to 2 feet. Dominant period 4 seconds. Protected waters a light chop.
Saturday night..North winds 10 to 15 knots. Seas 1 to 2 feet. Protected waters a light chop.
Sunday..North winds 10 knots becoming northwest 5 to 10 knots late in the afternoon. Seas 1 to 2 feet. Protected waters a light chop.
Sunday night..Northwest winds 10 knots becoming northeast 15 knots in the late evening. Seas 2 to 3 feet. Protected waters a light chop.
Monday..East winds 10 to 15 knots. Seas 2 to 3 feet. Protected waters a moderate chop.
GMZ700 Synopsis For The Suwannee River To Okaloosa-walton County Line Out To 60 Nm 339 Am Edt Thu Apr 26 2018
Synopsis..Winds are expected to increase to cautionary levels today as an area of low pressure passes through the southeast. They're forecast to subside below headline levels by tonight, and remain relatively low through the weekend. Early next week, nocturnal easterly wind surges to cautionary or advisory levels are expected.

7 Day Forecast for Marine Location Near Port St. Joe city, FL
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location: 29.82, -85.31     debug


Area Discussion for -
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Fxus62 ktae 261044
afdtae
area forecast discussion
national weather service tallahassee fl
644 am edt Thu apr 26 2018

Aviation [through 12z Friday]
Patchy fog is resulting in MVFR visibility at vld, but this
should dissipate shortly after sunrise.VFR conditions will
prevail through the remainder of the morning. West-southwesterly
winds will increase to 10-15 kts with gusts to 20 kts possible at
ecp, dhn and aby in the afternoon and early evening. During this
time, showers and isolated storms will develop across our nw
areas with brief visibility reductions possible at dhn and aby.

Vfr conditions will prevail with winds below 10 kts after sunset.

Prev discussion [328 am edt]
Near term [through today]
A potent upper-level shortwave will become negatively tilted and
move eastward just to our northwest today, with a low pressure
center under this feature moving across northern al into NW ga
during the afternoon and early evening. During this time, a cold
front will move into northwestern portions of our area, with deep
layer moisture increasing to 1-1.5" across our area ahead of the
front. The strongest mid-upper level forcing will be present across
our northern northwestern areas during this time, with strong pv
advection over our northern tier of counties. Instability will not
be too impressive in these areas but could increase to 500-1000 j kg
during the afternoon and early evening. 0-6 km bulk shear around 50
kts is possible for our northern locations, as well as mid-level
lapse rates from 7-8 c km across our area.

Spc has added a marginal risk of severe weather across our far
northern counties in SW georgia, and considering the aforementioned
parameters and forcing it appears that isolated large hail and
possibly damaging winds are the main threats. Low-level shear and
helicity values do not appear supportive of a tornado threat in our
area at this time. Chances of showers and isolated thunderstorms
will decrease farther south and east across our area due to
progressively weaker forcing. High temperatures will range from the
mid 70s across our far western and coastal locations to lower 80s
across the inland fl big bend and much of southwest ga.

Short term [tonight through Saturday]
The potent shortwave discussed above will lift through the mid-
atlantic overnight, with a weaker northern stream shortwave
dropping into the lower mississippi valley. Showers will be coming
to an end across south-central georgia during the early evening
hours, but should be on the increase in the far eastern gulf as a
weak southern stream wave passes over the cold front exiting the
region. As the northern stream wave from the mississippi valley
moves across the region on Friday, no rain is expected, just some
low-level cloudiness. The eastern CONUS trough will begin to lift
out of the southeast on Saturday, with clear skies and no rain
expected.

As far as temperatures are concerned, it's expected to be quite
pleasant, with highs ranging from the low to mid 70s on Friday,
and the upper 70s to near 80 degrees on Saturday. Mid to upper 50s
are expected tonight, with low 50s forecast on Friday night.

Long term [Saturday night through Thursday]
The eastern CONUS trough will be removed from the southeast by
early next week, with deep layer ridging taking over for the
duration of the extended range forecast period. As low-level flow
initially veers southerly on Tuesday, expect an increase in
cloudiness as weak isentropic ascent commences over the coastal
front. At this time it appears as though any showers associated
with this will remain west of the tri-state region. Expect highs
in the 80s and lows in the 50s each day night.

Marine
Winds are expected to increase to cautionary levels today as an
area of low pressure passes through the southeast. They're
forecast to subside below headline levels by tonight, and remain
relatively low through the weekend. Early next week, nocturnal
easterly wind surges to cautionary or advisory levels are
expected.

Fire weather
High dispersion values are likely across northern florida this
afternoon and early evening. However, rh values will not reach
critical thresholds as minimum values will generally range from 40
to 60 percent. As a result, fire weather concerns are not
anticipated.

Hydrology
Average rainfall amounts across southeast alabama and south
georgia are expected to remain below 0.25" today. Elsewhere,
little to no rain is expected. After today, rain is not in the
forecast through next week. Thus, flooding is not a concern.

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 82 58 76 53 80 20 0 0 0 0
panama city 75 60 71 58 75 20 0 0 0 0
dothan 77 54 73 53 77 80 0 0 0 0
albany 80 55 73 52 77 70 20 0 0 0
valdosta 82 59 78 53 78 30 10 0 0 0
cross city 80 63 79 52 79 0 20 0 0 0
apalachicola 76 61 72 59 75 20 10 0 0 0

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... Lahr
short term... Harrigan
long term... Harrigan
aviation... Lahr
marine... Harrigan
fire weather... Lahr
hydrology... Harrigan


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
APCF1 - 8728690 - Apalachicola, FL 19 mi44 min Calm G 1 63°F 71°F1012.3 hPa
APXF1 - Apalachicola Reserve, FL 23 mi89 min N 1.9 58°F 57°F
PACF1 - 8729108 - Panama City, FL 30 mi44 min SSE 1.9 G 1.9 62°F 73°F1012.5 hPa
SGOF1 - Tyndall AFB Tower C (N4), FL 37 mi74 min E 4.1 G 4.1 67°F 1012.5 hPa (-0.4)59°F
PCBF1 41 mi44 min ESE 4.1 G 5.1 65°F 70°F1012.3 hPa

Wind History for Apalachicola, FL
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Apalachicola, Apalachicola, FL16 mi81 minN 010.00 miFair56°F55°F100%1011.8 hPa
Tyndall Air Force Base, FL23 mi78 minN 010.00 miFair57°F55°F97%1012.1 hPa

Wind History from AAF (wind in knots)
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Last 24hrN4NW8N10N10NW9
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W13NW11NW9NW5NW4NW4NW3CalmCalmCalmCalmCalmCalmCalm
1 day agoNW4NW5NW10NW11NW11NW8
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NW14W11W13W10W5W5W4W5N7N7N5NW4NW3NW3NW3
2 days agoS10S8SW10S12W12W14
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SW16W15W12W9W6W5W4W6W4W6W4NW3N4CalmCalm

Tide / Current Tables for Port Saint Joe, St. Joseph Bay, Florida
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Port Saint Joe
Click for Map
Thu -- 04:10 AM CDT     Moonset
Thu -- 04:28 AM CDT     0.36 feet Low Tide
Thu -- 06:03 AM CDT     Sunrise
Thu -- 01:03 PM CDT     0.64 feet High Tide
Thu -- 02:22 PM CDT     0.64 feet Low Tide
Thu -- 04:10 PM CDT     Moonrise
Thu -- 07:15 PM CDT     Sunset
Thu -- 09:28 PM CDT     0.77 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.60.50.40.40.40.40.40.50.50.60.60.60.60.60.60.70.70.70.70.70.80.80.7

Tide / Current Tables for Wetappo Creek, East Bay, St. Andrew Bay, Florida
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Wetappo Creek
Click for Map
Thu -- 04:10 AM CDT     Moonset
Thu -- 06:03 AM CDT     Sunrise
Thu -- 06:57 AM CDT     0.33 feet Low Tide
Thu -- 01:29 PM CDT     0.77 feet High Tide
Thu -- 04:10 PM CDT     Moonrise
Thu -- 06:19 PM CDT     0.68 feet Low Tide
Thu -- 07:15 PM CDT     Sunset
Thu -- 11:29 PM CDT     0.88 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.90.80.60.50.40.40.30.40.40.50.60.70.80.80.70.70.70.70.70.70.80.80.9

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Southeast    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 (7,2,3,4)
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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.