Friday, July10, 2020
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Marine Weather and Tides
Port St. Joe, FL

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:47AMSunset 7:48PM Friday July 10, 2020 1:01 AM CDT (06:01 UTC) Moonrise 11:43PMMoonset 10:51AM Illumination 77% Phase: Waning Gibbous; Moon at 19 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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GMZ752 Expires:202007100800;;598744 Fzus52 Ktae 100126 Cwftae Coastal Waters Forecast For Florida Big Bend And Eastern Panhandle National Weather Service Tallahassee Fl 926 Pm Edt Thu Jul 9 2020 Gulf Coastal Waters From The Mouth Of The Suwannee River To Okaloosa-walton County Line Out To 60 Nm. Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves...along With The Occasional Height Of The Average Highest 1/10 Of The Waves. Gmz730-750-752-755-765-770-772-775-100800- 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- 926 Pm Edt Thu Jul 9 2020 /826 Pm Cdt Thu Jul 9 2020/
Rest of tonight..West winds 15 knots. Seas 2 to 4 feet. Dominant period 5 seconds. Protected waters a moderate chop. Slight chance of showers and Thunderstorms.
Friday..West winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 5 seconds. Protected waters a moderate chop. Slight chance of showers and Thunderstorms in the morning. Chance of showers and Thunderstorms in the afternoon.
Friday night..West winds 15 knots. Seas 2 to 4 feet. Dominant period 6 seconds. Protected waters a moderate chop. Slight chance of showers in the evening. Slight chance of Thunderstorms through the night. Chance of showers after midnight.
Saturday..West winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 5 seconds. Protected waters a light chop. Slight chance of showers in the morning. Slight chance of Thunderstorms through the day. Chance of showers in the afternoon.
Saturday night through Sunday..West winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 5 seconds. Protected waters a light chop. Slight chance of showers and Thunderstorms through the night.
Sunday night through Monday..West winds 15 knots. Seas 2 to 3 feet. Protected waters a moderate chop. Slight chance of showers and Thunderstorms.
Monday night..West winds 10 to 15 knots. Seas 2 to 4 feet. Protected waters a light chop. Slight chance of showers and
GMZ700 Synopsis For The Suwannee River To Okaloosa-walton County Line Out To 60 Nm 926 Pm Edt Thu Jul 9 2020
Synopsis.. Borderline cautionary marine conditions are expected over the next several with west winds generally at 10-15 knots and 2-4 ft seas. Winds and seas can be greater near showers and Thunderstorms.


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


Area Discussion for -
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FXUS62 KTAE 100514 AFDTAE

Area Forecast Discussion National Weather Service Tallahassee FL 114 AM EDT Fri Jul 10 2020

AVIATION. [Through 06Z Saturday]

VFR conditions are expected to prevail through mid day tomorrow prior to widespread shower and thunderstorm activity expected to effect terminals starting at 18 UTC. Thunderstorms and showers may briefly provide MVFR conditions while impacting terminals. Given the diurnal nature of the thunderstorms, activity should diminish by the evening, and VFR conditions should prevail for the remainder of the period.

PREV DISCUSSION [919 PM EDT].

NEAR TERM [Through Friday].

Although some convection is still expected this afternoon into the evening hours with seasonably high moisture and northwest flow, coverage is expected to remain isolated to scattered with not much in the way of upper level support. Scattered convection is expected to develop offshore later tonight with the land breeze. Otherwise, overnight lows are expected to be in the low to mid 70s.

On Friday, a similar environment is expected to be in place compared to today. Fairly high precipitable water with northwest flow is expected to yield scattered convection across the area. High temperatures will generally range from the low to mid 90s. Dewpoints are expected to remain high in the mid 70s with fairly deep moisture. This will cause heat index values to get close to the heat advisory criteria of 108 degrees across portions of the panhandle and big bend on Friday afternoon, and future shifts will need to monitor for a possible heat advisory if the forecast trends any warmer.

SHORT TERM [Friday Night Through Saturday Night].

The eastern US remains under the influence of broad upper-level troughing with surface high pressure persisting over the Gulf of Mexico through the short-term period. A surface low (Invest 98L) will continue moving north along the mid-Atlantic coastline before phasing with a mid/upper low from the west. The baroclinic nature of these features should bring a frontal boundary down to the southern states and ripples of energy to provide some forcing for ascent. In addition, drier air appears to filter into our area from the northwest Sat with forecast PWAT values of around 1 inch. As a result, shower and thunderstorm coverage is not expected to be as high compared to the previous days. However, the tradeoff is an increase in DCAPE to around 1000 J/kg, such that any storms that do develop, have the potential to produce strong wind gusts. Best precipitation chances (up to ~60%) are in the FL Big Bend and I-75 corridor Sat afternoon when instability is greatest.

Max temperatures are expected to be the hottest of the period, with highs ranging from 94-97 degrees (100-106 heat indices) and lows in the mid/upper 70s. Although not explicitly in the forecast, the ECAM did show max temperatures of around 100 degrees for Sat, which is something that bares watching over the next couple days.

LONG TERM [Sunday Through Thursday].

Looking ahead to next week, the phasing systems lift to the northeast, while the aforementioned high pressure shifts to the western Gulf. Another mid/upper low is then forecast to drop down into The Great Lakes area and trigger surface cyclogenesis near the OH/TN valley early Sun. This system will drag a frontal boundary to its south and bring a secondary plume of drier air behind the front. The described synoptic pattern will keep our area under a northwesterly flow regime.

One potential scenario worth mentioning is the GFS apparently formating a mesoscale convective system (MCS) on the tail end of the front Sun evening over central AL that pushes into our AL counties, FL Panhandle, and marine areas through Mon morning. Regardless, upper-level troughing prevails into Tues, which should keep the weather unsettled for us. By mid-week, the trough lifts out and gets replaced by a deep-layer ridge from the west. Therefore a return to a more typical summertime pattern is anticipated, with diurnally driven, sea-breeze convection driving our weather. Chance-to-likely PoPs are forecast each afternoon (slight chance of thunder).

Despite a continued wet pattern, high temperatures are forecast to be in the low/mid 90s (94-97 on Sun) and lows in the low/mid 70s (except along the immediate coast). The combination of the high heat and humidity will cause low-end heat concerns; especially Sun where WPC shows at least a 40% chance of heat indices exceeding 110 from Tallahassee to the Panhandle.

MARINE.

Borderline cautionary marine conditions are expected over the next several with west winds generally at 10-15 knots and 2-4 ft seas. Winds and seas can be greater near showers and thunderstorms.

FIRE WEATHER.

Warmer and slightly drier conditions expected the next few days across the forecast area. While red flag conditions will not be met, dispersions will be high.

HYDROLOGY.

A wet pattern remains in place through the forecast period, though precipitation coverage may be more limited at times compared to the previous few days. This is reflected in the 7-day QPF amounts of about 1 inch or less from WPC. Locally higher isolated amounts are always possible where strong and/or slow-moving storms develop. There are no flood concerns, but ponding of water in low-lying and poor-drainage areas can occur.

As for rivers, the Ochlockonee (Thomasville and Concord) and Aucilla - Lamont are forecast to drop below action stage over the next 1-3 days, while Ochlockonee - Havana rises to action stage Fri morning. All other rivers and creeks are in good shape.

SPOTTER INFORMATION STATEMENT.

Spotter activation is not requested. However, spotters are always encouraged to safely report significant weather conditions when they occur (while following all local, state, and CDC guidelines) by calling the office or tweeting us @NWSTallahassee.

PRELIMINARY POINT TEMPS/POPS.

Tallahassee 76 97 74 97 75 / 20 50 20 50 20 Panama City 78 94 78 93 78 / 20 50 20 40 20 Dothan 75 95 74 95 73 / 10 50 20 30 10 Albany 77 96 74 96 74 / 20 50 20 40 10 Valdosta 74 94 74 94 74 / 20 50 20 60 20 Cross City 75 94 75 94 75 / 20 60 30 60 30 Apalachicola 78 92 78 91 78 / 20 40 30 30 20

TAE WATCHES/WARNINGS/ADVISORIES. FL . None. GA . None. AL . None. GM . None.

NEAR TERM . DVD SHORT TERM . IG LONG TERM . IG AVIATION . Bunker MARINE . IG FIRE WEATHER . Dobbs HYDROLOGY . IG


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
APCF1 - 8728690 - Apalachicola, FL 19 mi44 min WNW 2.9 G 5.1 81°F 85°F1014.5 hPa
APXF1 - Apalachicola Reserve, FL 23 mi77 min W 6 1016 hPa
PACF1 - 8729108 - Panama City, FL 30 mi44 min W 12 G 15 81°F
SGOF1 - Tyndall AFB Tower C (N4), FL 37 mi122 min W 12 G 13 81°F 1014.8 hPa (+1.1)79°F
PCBF1 41 mi44 min WNW 11 G 12 80°F 78°F1014.4 hPa

Wind History for Apalachicola, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Apalachicola, Apalachicola, FL16 mi69 minW 510.00 miFair81°F78°F91%1014.3 hPa
Tyndall Air Force Base, FL23 mi66 minW 610.00 miFair82°F78°F89%1014.5 hPa

Link to 5 minute data for KAAF

Wind History from AAF (wind in knots)
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Last 24hrCalmW3NW3NW3NW3NW4NW6N9NW6N8N7NW8W11W11W11
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1 day agoCalmNW3N3CalmCalmCalmNW8NW10NW12NW15NW13W12W11W11
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Tide / Current Tables for Port Saint Joe, St. Joseph Bay, Florida
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Port Saint Joe
Click for Map
Fri -- 12:10 AM CDT     0.24 feet Low Tide
Fri -- 05:48 AM CDT     Sunrise
Fri -- 10:51 AM CDT     Moonset
Fri -- 02:22 PM CDT     1.29 feet High Tide
Fri -- 07:44 PM CDT     Sunset
Fri -- 11:42 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.20.30.30.40.50.60.70.80.911.11.21.31.31.31.21.110.90.70.60.50.4

Tide / Current Tables for Wetappo Creek, East Bay, St. Andrew Bay, Florida
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Wetappo Creek
Click for Map
Fri -- 02:40 AM CDT     0.24 feet Low Tide
Fri -- 05:48 AM CDT     Sunrise
Fri -- 10:51 AM CDT     Moonset
Fri -- 03:47 PM CDT     1.29 feet High Tide
Fri -- 07:45 PM CDT     Sunset
Fri -- 11:42 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.30.20.20.30.30.40.50.60.70.80.911.11.21.31.31.31.21.110.90.70.6

Weather Map
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wmap_A
GEOS 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 (2,6,7,8)
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Ground Weather Radar Station Tallahassee, FL
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Gulf Stream Current


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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 numerous 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.