Thursday, April25, 2019 L-36.com


Marine Weather and Tides
Upper Grand Lagoon, FL

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:03AMSunset 7:17PM Thursday April 25, 2019 6:42 PM CDT (23:42 UTC) Moonrise 12:35AMMoonset 11:07AM 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 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- 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- 456 Pm Edt Thu Apr 25 2019 /356 Pm Cdt Thu Apr 25 2019/
.small craft should exercise caution...
Tonight..Southwest winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 5 seconds. Protected waters choppy. Showers and Thunderstorms.
Friday..Northwest winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 6 seconds. Protected waters choppy. Chance of showers and Thunderstorms in the morning.
Friday night..North winds 15 knots. Seas 2 to 4 feet. Dominant period 5 seconds. Protected waters a moderate chop.
Saturday..East winds 10 to 15 knots becoming southeast 5 to 10 knots in the afternoon. Seas 2 to 3 feet. Dominant period 5 seconds. Protected waters a light to moderate chop.
Saturday night..South winds 5 to 10 knots early in the evening becoming light and variable winds. Seas 1 to 2 feet. Dominant period 5 seconds. Protected waters smooth.
Sunday..Light and variable winds becoming east 5 to 10 knots in the late morning and afternoon. Seas 1 foot. Protected waters smooth.
Sunday night..Light and variable winds becoming east around 5 knots early in the morning. Seas 1 foot. Protected waters smooth.
Monday..Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Protected waters a light chop.
Monday night..East winds 10 knots. Seas 1 to 2 feet. Protected waters a light chop.
Tuesday..Southeast winds 10 knots. Seas 2 to 3 feet. Protected waters a light chop.
GMZ700 Synopsis For The Suwannee River To Okaloosa-walton County Line Out To 60 Nm 456 Pm Edt Thu Apr 25 2019
Synopsis.. Winds will increase to exercise caution levels overnight as a front crosses the coastal waters. Winds could locally be much higher in and near the showers and Thunderstorms. Conditions will improve into Saturday, with light winds and low seas expected through early next week.


7 Day Forecast for Marine Location Near Upper Grand Lagoon, FL
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location: 30.17, -85.76     debug


Area Discussion for -
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Fxus62 ktae 251847
afdtae
area forecast discussion
national weather service tallahassee fl
247 pm edt Thu apr 25 2019

Near term [through Friday]
A squall line west of the area will continue to move eastward
through the evening and overnight hours ahead of a cold front. While
instability is not overly high ahead of the line (sbcape generally
under 1000 j kg), the deep layer shear is fairly strong for this
time of year over 50 knots. In addition, while low level shear
magnitudes are not particularly high, there is decent curvature in
the wind profile in the low levels on the 12z NAM soundings. Thus,
there is still a marginal to slight risk of severe storms this
evening and overnight across portions of the tri-state area with the
greatest threat across the florida panhandle. Damaging straight line
wind is the primary threat, but a brief tornado or two cannot be
ruled out along the line either. The line will quickly exit the area
Friday morning with clearing skies and drier air behind it.

Short term [Friday night through Saturday night]
Upper trough responsible for pushing the cold front through the
region will lift out quickly to the northeast late Friday. Largely
zonal flow will take its place through Saturday with dry
conditions expected. Airmass behind the front is not a whole lot
cooler than in front, so temperatures will remain mild on
Saturday. Expect to start the day in the lower to mid 50s before
rising to the lower to mid 80s in the afternoon.

Long term [Sunday through Thursday]
Upper ridge is forecast to build over the southeastern states by
early next week. This will keep the weather dry and warm. May see
some 90 degree high temperatures creep into the area by Monday and
Tuesday.

Aviation
[through 18z Friday]
conditions will gradually deteriorate this evening as a squall
line approaches and moves through the area. Tsra with gusty winds
are expected as the line moves through, followed by gradually
clearing skies behind the line during the morning hours on Friday.

Marine
Winds will increase to exercise caution levels overnight as a
front crosses the coastal waters. Winds could locally be much
higher in and near the showers and thunderstorms. Conditions will
improve into Saturday, with light winds and low seas expected
through early next week.

Fire weather
Rain is expected tonight. Much drier air will move into the region
by Saturday. Relative humidity values will be in the 40 percent
range tomorrow and in the 20-35 percent range on Saturday. Red flag
conditions are not expected since winds will be light Saturday. High
dispersions over 75 are expected tomorrow.

Hydrology
The apalachicola river near blountstown continues to slowly fall.

Elsewhere, rivers and streams are generally steady or falling.

Rainfall amounts tonight into Friday will range from less than
half an inch in the north to around 1.5 inches along the coast.

These amounts may cause some temporary rises in the smaller
basins, but significant rises are not expected.

Spotter information statement
Spotter activation is requested. Spotters should safely report
significant weather conditions and or damage by calling the office or
tweeting us @nwstallahassee.

Preliminary point temps pops
Tallahassee 64 82 53 84 51 90 10 0 0 0
panama city 65 79 57 76 58 100 0 0 0 0
dothan 63 78 52 80 53 90 0 0 0 0
albany 65 80 54 81 54 80 10 0 0 0
valdosta 64 82 53 83 53 90 30 0 0 0
cross city 65 82 54 83 55 90 50 0 0 0
apalachicola 66 80 57 76 57 90 10 0 0 0

Tae watches warnings advisories
Fl... None.

Ga... None.

Al... None.

Gm... None.

Near term... Dvd
short term... Camp
long term... Camp
aviation... Dvd
marine... Camp
fire weather... Barry
hydrology... Camp


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PACF1 - 8729108 - Panama City, FL 5 mi48 min SE 13 G 16 72°F
PCBF1 7 mi48 min SE 14 G 17 71°F 72°F1011.4 hPa
APCF1 - 8728690 - Apalachicola, FL 52 mi48 min S 11 G 13 72°F 72°F1011.9 hPa

Wind History for Panama City, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Tyndall Air Force Base, FL11 mi1.8 hrsSSE 17 G 2210.00 miMostly Cloudy74°F67°F80%1011.1 hPa
Panama City - Northwest Florida Beaches International Airport, FL13 mi49 minno data10.00 miPartly Cloudy73°F66°F81%1012.4 hPa

Wind History from PAM (wind in knots)
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Last 24hrS3CalmCalmCalmE4SE5E3CalmCalmCalmE4E3E4E6SE13SE14S13S16SE20
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1 day agoW6W5W5W3CalmCalmCalmE3CalmCalmCalmE3SE4CalmCalmCalmCalmS7S8S8S7S4S6--
2 days agoW6W6W5W4NW3CalmNW4N3N4N4CalmNE3CalmN4NE5E3E3SW5S6S8SW10SW11W13W8

Tide / Current Tables for Channel entrance, St. Andrew Bay, Florida
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Channel entrance
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Thu -- 12:16 AM CDT     -0.17 feet Low Tide
Thu -- 12:34 AM CDT     Moonrise
Thu -- 06:05 AM CDT     Sunrise
Thu -- 11:07 AM CDT     Moonset
Thu -- 02:10 PM CDT     1.33 feet High Tide
Thu -- 07:16 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.2-0.1-00.10.20.30.50.70.811.11.21.31.31.31.21.10.90.70.50.30.10

Tide / Current Tables for Panama City Beach, Florida
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Panama City Beach
Click for Map
Thu -- 12:35 AM CDT     Moonrise
Thu -- 06:06 AM CDT     Sunrise
Thu -- 11:07 AM CDT     Moonset
Thu -- 12:33 PM CDT     1.39 feet High Tide
Thu -- 07:17 PM CDT     Sunset
Thu -- 11:47 PM CDT     -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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-0.1-0.1-00.10.30.40.60.70.91.11.21.31.41.41.31.21.10.90.70.50.30.20-0

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (19,4,5,8)
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Ground Weather Radar Station Northwest Florida
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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.