Saturday, July11, 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 5:48AMSunset 7:48PM Saturday July 11, 2020 3:42 PM CDT (20:42 UTC) Moonrise 12:00AMMoonset 11:44AM Illumination 61% Phase: Waning Gibbous; Moon at 21 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 Expires:202007120730;;688086 Fzus52 Ktae 111823 Cwftae Coastal Waters Forecast For Florida Big Bend And Eastern Panhandle National Weather Service Tallahassee Fl 223 Pm Edt Sat Jul 11 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. Gmz730-750-752-755-765-770-772-775-120730- 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- 223 Pm Edt Sat Jul 11 2020 /123 Pm Cdt Sat Jul 11 2020/
Tonight..Northwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 3 seconds. Protected waters a moderate chop.
Sunday..Northwest winds 10 knots becoming southwest 10 to 15 knots in the afternoon. Seas 1 to 2 feet. Dominant period 3 seconds. Protected waters a light chop.
Sunday night..West winds 15 knots. Seas 2 feet. Dominant period 2 seconds. Protected waters a moderate chop.
Monday..West winds 15 knots. Seas 2 to 3 feet. Dominant period 2 seconds. Protected waters a moderate chop. Slight chance of showers and Thunderstorms.
Monday night..West winds 15 knots. Seas 2 to 3 feet. Dominant period 1 second. Protected waters a moderate chop. Slight chance of showers and Thunderstorms.
Tuesday..West winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 1 second. Protected waters a light chop. Slight chance of showers and Thunderstorms.
Tuesday night..West winds 10 knots. Seas 2 to 3 feet. Dominant period 1 second. Protected waters a light chop. Slight chance of showers and Thunderstorms after midnight.
Wednesday..Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 3 seconds. Protected waters mostly smooth. Slight chance of showers and Thunderstorms.
Wednesday night..West winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 2 seconds. Protected waters mostly smooth.
Thursday..North winds 5 to 10 knots becoming southwest 5 to 10 knots in the afternoon. Seas 1 foot. Dominant period 3 seconds. Protected waters mostly smooth. Slight chance of showers and Thunderstorms in the morning. Chance of showers and Thunderstorms in the afternoon.
GMZ700 Synopsis For The Suwannee River To Okaloosa-walton County Line Out To 60 Nm 223 Pm Edt Sat Jul 11 2020
Synopsis.. Elevated westerly winds up to 15 knots will lead to seas up to 3 feet through Wednesday. Westerly winds are expected to decrease to between 5 and 10 knots by Tuesday night with a corresponding decrease in seas to between 1 and 2 feet on Thursday. The chance of showers and Thunderstorms returns on Monday, which could lead to locally higher winds and seas.


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 111951 AFDTAE

Area Forecast Discussion National Weather Service Tallahassee FL 350 PM EDT Sat Jul 11 2020

NEAR TERM [Tonight and Sunday].

The 12z KTAE sounding shows dramatically drier mid level air compared to yesterday with a precipitable water value down to 1.37 inches with northerly flow. With this much dry air, convection is expected to remain suppressed this afternoon across most of the area with the possible exception of the far southeast big bend around Dixie county. Overnight lows will generally be in the low to mid 70s.

For Sunday, northwest flow will continue with another hot day expected with afternoon highs in the mid to upper 90s. Slightly lower dewpoints are expected to keep most areas below the 108 threshold for a heat advisory. An upper level shortwave will get closer to the area by late Sunday, so we'll need to watch for potential thunderstorm development to our northwest, but currently it looks like that activity will stay northwest of us during the day on Sunday.

SHORT TERM [Sunday Night through Monday Night].

There are a couple windows for strong thunderstorms during this period centered on Sunday Night and again on Monday afternoon. There are two general scenarios depicted by the models Sunday Night regarding a southeastward propagating MCS - 1) It reaches the area or additional development occurs along the cold pool and 2) it weakens or moves just to our southwest. Most of the CAMS favor the second scenario and this seems reasonable given limited instability and increasing CIN. But this will have to be watched, especially if the timing speeds up, and it arrives earlier in the evening. SPC has outlined the area just to our northwest in a marginal risk for severe thunderstorms. Model soundings indicate deep layer Bulk Shear increasing to around 30 knots and inverted-v/caret profiles, so the main concern would be gusty winds northwest of the Apalachicola and Flint Rivers.

On Monday afternoon, a westerly 850 hPa flow will allow for a more robust sea-breeze, while additional mid-level shortwave energy traverses the area. These features will serve to focus afternoon and evening thunderstorms. Mixed Layer CAPE is modeled over 2k J/kg, with Downdraft CAPE to 1k J/kg, along with steep low to mid-level lapse rates. The setup would be favorable for isolated damaging wind gusts and marginally severe hail.

High temperatures in the mid-90s with dew points in the low to mid-70s will make for heat indices in excess of 100 degrees.

LONG TERM [Tuesday Through Saturday].

Brief shortwave ridging and Precipitable Water values falling about a half inch is expected to lead to less precip coverage on Tuesday, with PoPs generally around 40 pct, which is slightly below climatology. Highest chances in the I-10 corridor with the sea-breeze convection. Thereafter, the 850 hPa flow becomes easterly thru the weekend, with both the gulf and east coast sea-breezes forcing convection. PoPs return to climatology in this time frame, generally 40 to 60 pct.

Heat indices will be 100-105 degrees most days. It's possible we reach advisory criteria, especially where convection is suppressed.

AVIATION. [Through 18Z Sunday]

VFR conditions are expected to prevail through the period.

MARINE.

Elevated westerly winds up to 15 knots will lead to seas up to 3 feet through Wednesday. Westerly winds are expected to decrease to between 5 and 10 knots by Tuesday Night with a corresponding decrease in seas to between 1 and 2 feet on Thursday. The chance of showers and thunderstorms returns on Monday, which could lead to locally higher winds and seas.

FIRE WEATHER.

Red flag conditions are not expected for the next several days. Fairly low relative humidity is expected on Sunday afternoon, but winds will be light.

HYDROLOGY.

Average precipitation amounts over the next week are forecast around one half inch across much of the region, which is below average for mid-July. Stronger subtropical ridging with drier air aloft will limit rainfall, which will be largely driven by the sea-breeze circulation. Portions of the Aucilla, Ochlocknee, and Sopchoppy Rivers remain in action stage, and are expected to remain below flood stage.

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 72 99 74 95 75 / 0 10 10 60 30 Panama City 75 94 78 91 78 / 0 10 20 40 20 Dothan 70 97 74 94 74 / 0 10 40 60 20 Albany 71 97 75 94 75 / 0 10 30 60 20 Valdosta 72 96 73 94 74 / 0 0 10 40 20 Cross City 74 96 74 93 75 / 0 0 10 20 20 Apalachicola 75 93 78 90 78 / 0 0 10 30 20

TAE WATCHES/WARNINGS/ADVISORIES. FL . Heat Advisory until 8 PM EDT /7 PM CDT/ this evening for Calhoun- Central Walton-Coastal Bay-Coastal Dixie-Coastal Franklin- Coastal Gulf-Coastal Jefferson-Coastal Taylor-Coastal Wakulla-Gadsden-Inland Bay-Inland Dixie-Inland Franklin- Inland Gulf-Inland Jefferson-Inland Taylor-Inland Wakulla- Lafayette-Leon-Liberty-Madison-South Walton-Washington.

High Rip Current Risk until 2 AM EDT /1 AM CDT/ Sunday for Coastal Gulf.

GA . None. AL . None. GM . None.

NEAR TERM . DVD SHORT TERM . LF LONG TERM . LF AVIATION . DVD MARINE . LF FIRE WEATHER . DVD HYDROLOGY . LF


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
APCF1 - 8728690 - Apalachicola, FL 19 mi54 min NW 6 G 11 93°F 86°F1011.9 hPa
APXF1 - Apalachicola Reserve, FL 23 mi57 min NW 9.9 1012 hPa
PACF1 - 8729108 - Panama City, FL 30 mi54 min SW 12 G 13 83°F
SGOF1 - Tyndall AFB Tower C (N4), FL 37 mi42 min W 16 G 18 82°F 1012.1 hPa (-1.4)80°F
PCBF1 41 mi54 min W 8.9 G 9.9 82°F 77°F1012.5 hPa

Wind History for Apalachicola, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Apalachicola, Apalachicola, FL16 mi49 minNW 1010.00 miFair97°F77°F53%1011.4 hPa
Tyndall Air Force Base, FL23 mi46 minW 1410.00 miFair90°F77°F66%1011.8 hPa

Link to 5 minute data for KAAF

Wind History from AAF (wind in knots)
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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
Sat -- 12:05 AM CDT     0.42 feet Low Tide
Sat -- 05:49 AM CDT     Sunrise
Sat -- 11:44 AM CDT     Moonset
Sat -- 02:35 PM CDT     1.05 feet High Tide
Sat -- 07:44 PM CDT     Sunset
Sat -- 11:30 PM CDT     0.58 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.40.50.50.60.60.70.80.80.90.911111.1110.90.80.70.70.60.6

Tide / Current Tables for Wetappo Creek, East Bay, St. Andrew Bay, Florida
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Wetappo Creek
Click for Map
Sat -- 02:36 AM CDT     0.42 feet Low Tide
Sat -- 05:48 AM CDT     Sunrise
Sat -- 11:44 AM CDT     Moonset
Sat -- 04:00 PM CDT     1.05 feet High Tide
Sat -- 07:45 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Weather Map
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wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (16,3,4,5)
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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.